APBIL 1047
Stnndard presaure i u r b (mb)
Burlace ________ 1,OOO ______.____
950 _______.___.
800 ____________ 850 ____________ 800 ____________ 750 .__.___.____
700.. _____.____
650 ...--. ______ Mx) ____________ 650 ____________ 500 __________._
450 ___________.
400 __________._
300 ___..______.
250 .____.__..__
200 _____.______
175 _______.____
150 ____________ 125 ____________ 100 ____________
350 ___.________
MONTHLY WEATHER REVIEW
Albany, N. Y. Albuquerque, N. Mex. Apalachicola, Fla. Atlanta. 08. Auburn, Calif. Big Spring Tar. Bismarck. N. Dnk. (1,008.6 mb.) (834.0 mb.) (1,018.0 mb.) (988.9 mb.) (957.9 mb.) (~4 .4 mb.) (065.2 mb.)
$, ag
a
R -------
_---_--___-_c___-__-_----
30 86 4.8 73 30 1,620 14.2 24 30 6 19.8 89 30 300 16.3 76 30 6001 15.0 57 30 774 16.9 49 30 505 5.1 71 30 155 4.4 70 30 5i! I:)
-A_ 30 159 19.9 82 30 160 (9 ____ 30 134 (9 ____ 30 94 (*I :::: 30 1% (*
30 576 3.1 69 30 ) ____ 30 602 18.9 67 30 602 16.7 66 30 576 15.6 54 30 540 (* 30 549 (3 ::I: 30 1,000 1.4 69 30 974 (* 30 1,065 16.8 60 30 1,059 14.1 66 30 1,023 1 2 8 60 30 1.001 16.9 60 30 989 3.6 64 30 1,4G6 -0.3 66 30 1,459 (*I 1::: 30 1,550 14.2 6x5 30 1,539 11.2 66 30 1,505 0.6 67 30 1.952-1.3 60 30 1,970 12.5 25 30 2,060 11.7 47 30 2,043 9.0 54 30 2 .W 5.5 51 30 1.896 12.0 43 30 1,936-1.5 62 30 2,469-3.6 63 30 2,510 8 4 28 30 2,599 8 8 42 30 2,579 6.5 46 30 2.533 1.6 50 30 2,536 8.8 37 30 2,460-4.0 57 30 3,007-5.t) 61 30 3,071 3.7 33 30 3,165 5.7 40 30 3,130 3.8 42 30 3,080-1.7 49 30 3,100 6.0 34 30 2,990-7.0 69 30 3591 -8.r 60 30 3669 -1.3 40 30 3770 2.5 39 30 3740 0.4 38 30 3666 -5.8 48 30 3699 0.8 S6 30 3569-10.6 Bo 30 4:202-11.6 58 30 d 2 e e -6 .7 47 30 4:409-1.3 37 30 4:375-3.5 36 30 4:286--10.1 48 30 4:338-3.7 34 30 4176-14.2 69 30 4,86G-15.5 63 29 4,970-12.0 52 30 5,096-6.1 38 30 5,057-7.9 37 30 4,953-14.6 47 30 5,018--86 33 30 4836-18.2 60 30 5.576 -3 .1 56 29 5,691 -17.5 56 30 5.636 -10.7 34 30 5,791 -129 44 30 5,665 -19.9 47 29 5,749 -13.8 ____ 30 5,538 -22.7 ____ 30 63.53-25.3 ____ 29 6,474-23.2 ___. 30 6.64.5-16.0 41 30 6,590-182 43 30 6,444-25.5 ____ 28 6,647-19.6 ____ 30 430s--28.1 ____ 29 7:2M) -31.1 ____ 29 7,324 -29.3 ____ 30 7.515 -22.0 ___. 30 7,456 -24.1 ____ 30 7.282 -31.7 ____ 27 7,406 -26.2 ____ 30 7,138 -34.1 ____
27 9: 190 -45.4 ____ 29 9,318 -42.8 ___. 29 9,562 -37.8 ____ 30 9,488 -39.7 ____ 30 9,250 -47.0 .___ 25 9,425 -40.2 .___ 24 9.W -48.2 ____ 25 10,390-53.0 ____ 27 10,524-50.1 ___. 28 10.785-48.0 ____ 29 10,710-49.2 ____ 29 10435-54.6 ____ 23 10,659-47.6 ____ 17 10,252-514 ____ 23 11.799 -59.0 ___. 15 11,842 -55.4 ____ 26 12,221 -58.4 ___. 27 12,134 -59.6 ___. 27 11:842 -59.6 ____ 18 12.124 -55.7 ____ 9 11,688 -66.0 ____ 20 12640-59.7 .... 7 12,818-58.1 ____ 26 13,052-62.4..-. a0 12975-62.2 ____ 21 12680-60.8 ___. 13 12,861-57.6 ____ 6 12,548-64.2 ____ 15 13,587 -59.5 ____ ___. _____.. _____. ____ 25 13,988 -65.5 ___. 14 13,922 -63.5 ____ 14 13.632 -59.6 ____ ____ _______ ______ ____ ____ _______ ______ ____ 9 14,764 -58.8 ____ ____ .___.__ _____. ____ 15 15,108 -68.2 ___. 7 15,018 -65.8 ____ 8 14,741 -68.8 ____ ____ _______ ______ ____ ____ _______ ______ ____ 7 16,412 -70.9 _._. .___ _______ ______ ____ ____ _______ ______ ____ ____ ______. ______ ____ ____ _______ ______ ____
9.2 48 30 1,486 14.4 50 30 1,451
28 8136-37.7 ____ 20 8,284-35.9 .__. 28 8,481-29.3 ___. 30 8,416-31.4 ____ 30 a z i i -3 a e ____ 27 a358-320 ____ 27 ao59-4o.s ____
____ _______ ______ ____ ___. ______. _____. ____
59
B o b , Idaho Brownsvtlle. Tex. Buffdo. N. Y. (915.9 mb.) (1,011.7 mb.) (881.4 mb.)
METEOROLOGICAL AND CLIMATOLOGICAL DATA FOR APRIL 1947
AEROLOGICAL OBSERVATIONS
Caribou, Malne Cbnrleston, 8 .0 . ciudnd victo*o Colnmbk, Mo. Mexico
1
(060.7 mb.) (971.3 mb.) (983.6 mb.) (1,017.0 mb.)
SUriaee ________
950 ____________ 800 ____________ 850 ____________ 800 ____________ 750 ____________ 700 ____________ 650 ____________ 600 ____________ 550 ____________ WO ____________ 450 ____________ 4W ____________
1.000 ___________
350 ____________ a00 ____________ 260. ___________ a00 ____________ 175 ____________ 160 ____________ 125
30 868 10.6 56 30 6 22.1 85 30 221 4 9 74 30 191 -2.2 76 30 14 17.4 88 29 335 26.1 66 30 239 11.6 72
30 562 (*) ____ 30 5 1 19.5 83 30 572 4.3--& 30 550 4 .0 67 30 607 17.2 74 29 532 2 4 7 64 30 557 11.0 MI 30 1,014 11.4 49 30 1,017 18.9 64 30 1,008 2.5 70 30 973-5.1 68 30 1,088 1 4 7 70 29 1.002 21.4 68 30 1,006 0.0 07 30 1,488 7.8 KO 30 1,507 17.4 63 30 1,488 1.0 88 30 1,420-7.0 71 30 1,548 12.1 68 29 1,495 1 8 0 62 30 1,477 7.0 70 30 1985 3.9 53 30 2024 1 5 6 40 30 1 0 5 3 -0 .8 63 30 1.802-9.0 68 30 2,054 9.5 68 P 2,012 1 4 7 63 30 1,973 4.7 08 30 2:%-0.2 59 30 2:674 13:3 33 30 2:475-2.9 69 30 2,394-11.4 63 30 2,691 7.0 45 29 2,681 l2.S 68 30 2,aOr 2 4 W 30 3,054 -4.3 62 30 3,145 9 9 27 30 3011 -5 3 58 30 2916-13.7 I 30 3151 4 2 42 29 3,133 10.0 U 30 3,052 -0.6 52 30 3,633 -8.4 62 28 3.760 5 8 26 30 3597 -al 57 30 3486-16.0 63 30 i 7 5 2 0.7 41 29 3743 6.9 30 3,645 -3.8 I 30 4250-125 55 28 4405 0 6 33 30 izOa-116 59 29 4073-19.0 ____ 30 4 3 W -2 .9 36 29 4395 0.8 43 29 4-280-7.6 44 30 ieOa-16:7 49 27 5:OW -4:7 38 30 4674-15:7 Bo 29 4,7m-22.4 ___. 29 5,074 -7.1 ____ 28 6,084 -4 6 44 29 4,943-12.8 48
30 5,618-21.7 ____ 27 5,840 -9.3 37 SO 5,681-20.8 64 29 5.410-26.2 ____ 18 5.813-12.0 ____ 28 6.831 -9.2 41 29 6,682-17.3 47 30 6391-27.5 ____ 27 6,654-14.9 ____ 29 6,357--28.3 ____ 29 8,172-30.3 ____ 27 6,622-17.2 ____ 28 6,641-14.7 42 29 8,451-22.8 ____ 34 7:223-33.9 ____ 25 7,527-21.3 ____ 29 7,191-32.0 ____ 28 6,966-35.3 ____ 27 7,492-23.1 ____ 27 7,526-m.4 4l 29 7,298-S.6 ____
27 16354 -55.8 ____ 25 10,817 -46.3 ____ 28 10.353 -62.9 ____ 24 10,168 -60.0 ____ 2ll 10,756 -48.8 ____ 26 10,830 -46.8 ____ 28 10.607 -&I7 ____ 21 11.771-59.6 ____ 24 12,270-55.0 ____ 23 11,769--8.2 ____ 14 11,629-51.7 ____ 25 12,183-69.5 ____ 21 12,278-M.9 ____ 24 11,8ao-67.6 ____ 16 12,579 -57.7 ____ 17 13.120 -58.6 ____ 15 12, 594 -59.2 ____ 10 12,476 -50.6 ____ 21 13.010 -63.1 ____ 12 13,110 -W.6 ____ 1R 1!47aO -69.9.8 ____ 8 13,490 -53.4 ____ 11 14,056 -61.0 ____ 6 13,511 -63.8 ____ 6 13,492 -61.7 ____ 16 13,042 -64.3 ____ ____ _______ ______ ____ 7 la720 -67.9 ____ ................................................................................................ 9 15,046-65.3 _______________________________-______._______
30 127 (9 ____ 30 107 21.3 85 30 149 (9 30 139 (0 ) ____ 30 i m 17.9 83 m n (9 ____ 30 125 (*) ____
30 a i 4 4 -4 i .i ____ 26 4497-28.7 ____ 29 8110-38.9 ____ n 7807-40.9 ____ 27 s,rsi-ao.4 ____ P 8,w0--28.0 ____ a0 &HI-35.5 __._ 2~ ~1 8 1 -4 a .6 ____ a6 q.w--37.0 ____ a0 9:161--46.1____ 26 Ces0-46.4 ____ 1 e,mi--38.7 ____ 27 ~I ,K S U -~.Z ____ a0 9,187--42.0 ____
Dodge Clty, Kans. (922.7 mb.) El Paw, Ter. Ely, Nev. Fort Worth, Tex. Qlasmw. Mont. Grand Junction Colo. (878.4 Ab.) (807.9 mb.) (W.4 mb.) (939.0 mb.) (8K1.2 mb.j
30 30 30 30 30 30
30 30 30 30
30 30 29 28 27 26 19 19 18
125 ____________ 17 100 ____________ 9
30
~ ~~~~ ~~
30 a0 30 30 30 30 30 30 30 30 30 30 30 30 30 30 29
15 7
m
787 9.8 74 30 108 30 M6 I*] :::I 30 983 10.0 67 30 1 467 8.7 61 30 1:967 6.4 52 30 2,498 3.1 60 30 3,049 -0.2 47 30 3,642 -4.0 45 30 4 264 -8.5 41 30 41935 -13.2 42 30 5 652 -18.3 43 30 6:435 -2 4 .O ---. 30 7 278-30.1 ____ 30 6214 -37.1 ____ 30 9 -285 -44.6 ____ 30 16468 -52.1 ____ 30
12,729 -59.3 ____ 18 13,688 -58.5 ____ 11 . 14,833-59.6 ........................
~
5 14,766-54.5 ......................... 6 14,BSO-54.1 __________________________-__---__--_---_-_--- 16,227-60.8 __________________________________________________________________________j
____
~
..................................................
11,883 -5a4 ____ 29
t i l l I i I I I I I I I I I I I I I I I
1,195 75 30 30 30 30 30 30 30 30 29 28
28 28 28 27 27 27 25 21 18 10
18.4 19
(0 ) ____
1,908 117 557 1011 1:486 1,988 2,519 3,070 3,657 4,278 4,942 5,656
7,272
8200
10,421 11,849
13,632-66.0
648 6.8 62
885 6.1 67 1,461 3.0 Bo 1,MB 0.0 62
1483 -3.5 62 3,005 -7.8 64 3,560-11.0 84 4,189 -14.9 62 4,839-19.4 62 6,542 -24.4 ____ 6,305 -30.0 ____ 7,133 -35.8 ____ 8,047 -42.6 ____ 9.081 -49.7 ____
11 673 -57.d ____ l2:513 -66.8 ____ 13,488 -64.1 ____
10,251 -68.2 --_-
6.2 68
(*
(0
(*I 1::: 6.9 65 3.0 57 -1.4 63 -6.0 70 -10.6 69 -15.2 63 -19.Q 58 6,432-25.6--.. -31.9 ____ -39.4 ____ 9,237-47.6---- -54.8 ____ -58.3 __-_ 12,859-66.7-..-
-...
(3 ::::
211 108 551
1.008 1,491 1,889
2,540 3,100 3.700 4,335 6,017 6,745 6,541 7,393
9,403 10,629 12.058 12,871 13,843
1,474 11.0 S9
1,978 7.7 40 2,509 3.3 47 3,061 -1.4 68
3,646 -6.3 6S 4,286 -11.2 72 4 828 -16.2 69 .E:636 -21.8 ____ 6,417 -27.3 ____ 7.246 -33.5 ---- 8,169-40.4-..- 9.207 -47.7 ____ 10,402 -54.0 ____ 11,819 -68.2 ____ 12,659 -68.4 ____ 13,622-56.6.-.-
18.1 67 30
(0 ) ___- 30 16.8 86 30 . 14.7 65 30 12.9 61 30 10.6 56 30 7.8 48 30 4.1 45 30 0.1 41 30 -4.4 44 30 -9.1 41 30 -14.6 ____ 30 -20.4 ____ 30 -26.8 ____ 29 8,342-34.2 .... 29 -42.1 ____ 24 -60.2 ____ 19 -59.3 ____ 11 -62.3 ____ 9 -61.7 ____ 7
1,128 7.7 b!2
M1 (* ____
117
1,008 (* 1,471 6.0 Yi 1,861 x 1 w 2483 -2.0 @I 3,026 -6.3 66 3,604-10.6 68 4,211 4 885 -14.7 -18.9 66 68
6,331 -29.9 ____ 7, 155 -36.1 ____ &os8 -43.1 ____ 9.088 -50.3 _--- 10,268 -56.4 ____ 11,672 -57.4 ____ 11,513 -64.5 ____ 13,605 -52.7 ____
I
----
a: 47 -24.1 __-_
1 486 1:997 2,537 3,101 3,699 4 332 6010 5,733 6,521 7,371 8 313
10,571 11,997 12,828
e: 368
17.2 21
13.0 23 9.0 24 4 .3 26 -0.5 27 -5.7 a0 -10.8 31 -16.4 ____ -22.3 ____ -28.6-..- -35.6 ____ -43.4 _--_ -51.5 ____ -58.4 ____ -68.3 ____ 13.810-6&9--.-
60 MONTHLY WEATHER REVIEW APRIL 1947
TABLE l.-Mean'dywmic h d h t (gcopotentiul) .in units of 0.98 dynamic mctera temperature i n degrees centigrade, and relative humidity i n
percent, for standard ptesnures, as obtained by radiosondes during April 1947- Continued
Havnna Cuba Honolulu, T. H. HuDtln&n, W. Va. Intematfonal Falls, Jollet, ni. (1,010.8)mb.) (1.016.6 mb.) (997.6mb.) Minn. (974.4 mb.) (994.6 mb.) Greensboro N. C. Hatteras, N. C. (887.5 m'b.) (1,020.2 mb.)
30 l73 14. 30 166 (*)
30 KIZ 13. 30 1,064 11. 30 1,631 9. 30 2,132 6. 30 2,665 4. 30 3,118 1. 30 6 ,n 3 -1. 30 4,344 -6.
30 5,020 -9. 30 6 751 -14 30 6:MQ-ab: 30 7,401 -26.
30 8,367 --.W. 28 9,419 -41. 27 10.628 -M.
26 13,066 --8.
10 12,881 -62. 16 13.821 -63.
l! 14,824 -a. I 16,305 -64.
-- ----- _---_---_--_
67 30 3 14.7 88 28 MI 24.4 86 l8 3 25.4 60 30 172 11.8 73 28 360 1.2 63 30 178 7.
____ 80 172 14.6 80 18 145 24.0 86 28 148 23.3 64 3C 162 (9 ____ 28 149 (9 ____ 30 131 (*) 61 30 808 11.6 72 18 697 21.0 81 !B M 19.4 72 30 16 11.8 66 28 665 0.9 SB 30 566 6. 62 30 1,060 11.7 69 28 1,081 18.7 66 28 1.066 15.6 7Q 30 1,033 9.6 66 29 696 -1.8 13 30 886 6. 62 30 1,637 9.9 68 28 16Kl 16.6 R8 28 1639 12.6 7Q 30 1608 7.0 67 28 1,449 -3.7 68 30 1,462 3. 69 30 2,039 7.7 47 28 2:OtiZ 11.9 74 28 i o 4 8 12.5 43 30 doa3 4.8 63 28 1,925 -6.8 56 30 1,952 61 30 2,674 6.3 39 29 2.W 8.7 Cja W 2.692 10.8 ____ 30 2.631 1.8 83 28 2,434 -7.9 56 30 2.472 -1: 4S 29 3,lB 2.6 ____ a9 3.1W 6.2 63 28 3,160 8.1 ____ 30 3 W -1 .0 M 28 2883-10.5 57 29 3018-4.
____ 23 6:Ch38-8.7 ___. 28 5:114-3.8 ____ 26 6,108-3.2 ___. 30 4:868-12.2 48 27 4,784-21.0 ____ 28 4:884-15.
____ 23 6,770-13.4 ____ 25 6,869-8.6..-- 24 6,860-8.1 ___. 30 5,688-16.9 48 27 6,479-25.8 ____ 28 6.697-19.
.--. 27 6569-18.7 ____ 21 6677-13.0 .... 23 6676-13.9 ____ 30 6,474-22.3 ____ 27 6241-30.7 ____ Z? 6.376-25.
.___ 25 8.391-31.8 ____ 19 8,633-28.0 ____ 17 8.626-27.8 ____ 2R 8,270-35.6 ____ 26 7.887-42.6 ____ 27 8.160-38.
.___ 25 9,462-39.9 ___. 18 9,lTZl-36.7 ____ 16 9,6?0-36.7 ____ 27 9.315-44.1 ____ 23 9,021-49.6 .... 27 9.196-46,
____ 21 10.682 -48.9 ____ 16 10,861 -46.6 ____ 16 10,863 -44.8 ___. 25 10,519 -63.0 ____ 22 10,194 -65.3 ____ 23 10.402 -52.
.___ 21 12,117 -68.4 ____ 15 12 808 -57.0 ___ 16 12,321 -54.2 ____ 20 11,927 -61.8 ___. 9 11,611 -M.8 ____ 21 11.818 -57.
.___ 16 12,962 -61.3 ____ 12 l3:ls2 -62.5 ____ 16 13,170 -68.6 ____ 16 12,780 -63.6 ___. ____ _______ _____. ____ 13 12.619 -6. .___ 6 13,864-69.7 ____ 6 14130-66.8 ____ 16 14,125-63.0 ____ 12 13.708-62.4 ......................... 6 13,699-65.
.___ ____ ____-_. ______ ____ ____ _______ ______ ____ 7 14,825 -61.8 ____ ____ _______ ______ ____ ____ _______ ____ .____.________________________________________ 6 16,665- 4.6 _____________________________________________________________
.___ 28 3,m -.4 ____ 28 a,m 3.0 36 27 3,773 4.8 ____ 30 3'673-4.2 47 28 3'534-13.5 57 28 3'605-7.
____ 4 3 ~9 -4 .2 ____ 28 4420 .3 ____ n 4.417 1.1 ____ 30 4'295-8.1 a m 4 :m -n .o ~9 a 4'219--11.
.--. 27 7:434--24.7 ____ 19 7:6~9-m.o--.. 20 7:549-20.7 ____ 28 7,328-28.6 ___. n 7:o(m-3e.3 ____ 2~ 7.219-30,
10 15,232 -66.2 ____
Lake Charles La. Lander, Wyo. (1,008.3 mb.) (971.2mb.) (1,015.1 mb.) (827.4mb.) (945.2 mb.)
30 30
30 30 30 30 30 90 30 30 30 30 28
aQ 28
28
28
19 12 7
m
6 19.6 86 134 19.4 81 582 17.4 74 1,035 16.7 66 1,519 13.6 E8
!&OB 11.4 60 2.570 8.6 46 3,132 6.7 35 3,73R 2.4 28
6,085 -7.1 34
, 5,798 -12.4 ____ 6.605 -18.1 ____ 7.466 -24. 2 ____ 8,425 -81.3 ____ 9 46'9 -30.3 ____
12,156 -68.6 ____
13,930-63.5---- 15,050 -66.7 ____ .
4377 -21 28
1o:m -C 9 ____
ia 097 -61.4 ____
a0 30 a0 30 30 30
30 30 30. 30 30 18 18 29
20
20
13 11
m m
1,696 4.9 63
117 (*) ____
l$ ::::
1,870 4.4 -7i 2495 .6 60 3,042 -3.6 66 3,624 -8.2 69 4,239 -12. 6 68 4,808-16.9 61 5, 612 -22. 1 ____ 6 .~2 -m e ____ 7,213 -34.1 ____ 8,133 -41.4 ____ 9.165 -48.9 ____ 10,841 -66.3 ____ 11.747 -58.3 ____ 12,682 -66.4 -_-_ 13,646 -64.7 ____
30 30 30 30 30 30 30 30 30 30 30 30 30 30 a0 30 28 a6 17 9
574 ai.3 22 81 (0 ) ___- 5% ('1 _-_- 996 19.0 22 1,482 14.7 28
1.m 10.1 ai 2.5% 5.4 37 3,081 .6 44 3,671 -41 39
4,287 -8.7 62 4,967-l3.4 61 6,684 -18.6 45 6,466 -24.3 ____ 7,310 -30.6 ____ 8,244 -37.9 ____ 9.188 -45.8 ____ 10,479 -63.5 ____ 11,888 -68.3 ____ 12,712 -67.2 .__. 13,658 -66.0 ____
28
28 18 28
28
29 29 28 28 28
27 27
a7
25
26
23 16 7
m
-___ _-__
79 16.7 70
573 130 16.9 16.0 66 64 1,028 13.8 6.5
1,606 11.4 63 2.011 9.7 61 2.661 7.0 47 3,109 3.8 44 3,715 1.0 40 4,350 -3.0 36 5,031 -7.9 ____ 5,765 -13.2 ___.
e, 666 -19.0 ___.
7,426 -m. 2 ____ 8,384 -31.6 ____ 9.458 -39.0 - - - - 10,883 -47.7 ____ 12,118 -57.1 ____ - 12,934 -69.3 ____ -
30 14 22.0 73 30 95 21.3 67 30 645 22.2 30 30 1,009 21.3 ____ 30 1,601 18.6 ____ 30 2,018 16.7 ____ 30 2,565 12.2---. 30 3,136 8.6 ____ 30 3,746 4.3 ____ 30 4,389 .O ..__
28 5,ORo -6.0 ____ 28 5.822 -10.2 ____ 28 6.631 -15.6 ____ 28 7.605 -21.7 ____ 26 8.474 -28.4 ____ a6 9,657 -37.5 ____ 18 10,819 -48.0 ____ - - - - - - - - - - - - - - - - - - - - --- ____ _-. _---_. _--_
30 30 30 30 30 30 30 30 30 30 30 18 28
28
28
28 28
n 18
8
---
401 16.0 MI 151 (*) ____ 693 14.5 61 1.041 10.8 55 1.514 6.9 61 2.008 3.0 65 2,532 -.7 65 3.076 -4.0 62
3.660 -7.5 62
4.274 -11.6 52 4,936-15.9 54 5,650 -20.7 59 6,423 -26.0 ___.
7,263 -32 I ____ 8,191 -39.3 -__- 9,234 -47.0 ____
1 1 ,w -60.9 ____ 12,646 -60.0 ____ 13,651 -66.7 ____
i0.4m -54.8 ____
--__-_--__-_-
~
-_--
28 n 2 8 .4 67 28 29 1,036 664 25.8 22.4 MI 60 29 1,531 18.7 66 28 2.049 14.9 69 28 2.697 11.4 66 29 3,166 8.5 52 28 3,783 5.5 40 28 4,427 1.9 32 28 6,1?5 -2.1 ____
28 6,696 -12 6 ____ 28 7,577 -19.1 __-- 28 8.555 -28.8 ____ 28 9,648 -35.4 ____ 28 10,891 -46.1 ____ n 12,347 -65.9 -___ 14 13.183 -61.6 ____ 6 14,116 -68.6 ____
29 107 28.! w
m 6.874 -7.0 ____
- - - - - - - - - - - - - - - - - - - -
,I I I l l I I l l I I l l I I l l 4 1
Nantucket, Maaa. Nashville, Tenn. New Orleans La. North Platte Nebr. Oakland, Calif. Ogden Utah (1,017.9 mb.) I (885.8mb.) (1,016.6 md.) I (916.2mb.) I (1,016.9 mb.) I (863.3'mb.) I M ~I , ma. (1.018.1 mb.)
ao 30 30 30 30 30 80 30 30 30 30 18 28
28
27
26 26
16 10
ae
m
-
4 11.0 80
161 a 6 80 610 110.8 79
1.664 15.7 66 2,077 13. 1 M)
2610 10.0 61 3,187 7.0 48 3.788 1.8 ra 4,439 .o---- 5,132 -3.9 ____ 6.878 -8.2 .___ 6;695 -13.7 ____ 7,673 -19.9 ____ 8, M7 -27.3 ____ 9,639 -36.6 ____ 14&2 -45.3 ____
13,162 -59.7 ____ 11,130 -64.4 ____ 15,2Ul -07.6 ____ .
1,0711 18.3 73
12a3e -u.o ____
30 30 30 30 30 a0 a0 30 30 30 30. 30 28
28
n 28 26
17 9.
m
.---
14 6.1 80 169 6.4 80 681 6.7 63
1.020 4.3 66 1,484 1 9 47 1,974 1.5 47 2493 - 40 3:MO -3:; 60
3,626 -6.2 16
4,241 -9.6 46 1914-13.6 46 6.630-18.3 60 6,414 -23.8 :--- 7,269 -29.4 __-_ 8,197 -36.1 1... 8.257 -43.4 ____ 10,486 -61.9 ____ 11.913 -1 .6 ____ 12 733 -69.6 ____ 13,655 -66.5 ____
180 16.3 68 144 (*) ____ E85 14.6 63 1,034 12.0 64 1.511 9.5 63 2,012 7.6 63
1,647 4.0 60 3.101 2.0 40 3,603 -1.4 39 4,329 -6.3 40 6.007 -9. e ____ 6,736--14.5..--
6,633 4 4 .1 ____ 7,388 -26.3 __-_ 8,340 -33.3 ____ 9,404 -41.0 ____ 10.624 -60.1 ____ 12,053 -69.9 ____ 12.884 -61.0 ____ 13,813 -60.7 ____ - 14,952 --Bo.2 __-_ -
30 30 30 30 30 30 30 30 30 29
29 28 27 a6 23 21 10 15 9
___ __- .
2 20.4 86
144 19.8 83
689 17.7 E2
1,047 16.6 67 1.632 14.2 52
2.042 11.9 48
2.684 9.2 46 3.149 6.0 45 3,756 2.7 38 4.3w -1.0 33
6.084 -5.6 34 6,826 -10.6 38 6,&% -16.3 ____ 7,498 -22.8 ____ 8,466 -30.3 ____ 9,535-38.0.-.- 10,761 -47.5-...
12,230 -56.6 :--- 13,081 -69.6 ____ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
&19 74 118
6'96 7.9 64 1.465 6.8 63
1.959 3.3 63
1,489 .3 61 3.029 -3.3 66
3.616 -7.4 66 4,230 -11.6 64
4.86'9-16.1 50
6, B(n -21.1 _-__ 6.3aa -28.7 -_-- 7,212 -33.0 -_-_ 8,144 -39.9 ____ 8,179 -47.7 ____ 10.364 -64.8 ____ 11,767 -57.a ____ 1% 606 -66.7 ____ 13.W -66.9 ____ 1% 735 -66.3 ____ .
$9
m 1.1 1:::
30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 a8 23
16 12
6
6 14.9 71
14.0 13.0 70 62
1,032 12.0 47 1,509 9.5 42 2,009 8.8 S6 2.642 3.3 38 3,091 -.1 36
3.883 -3.9 32 4.3M -7.9---- 4,978 -12.4 ____ 6,699 -17.4 ____ 6,486 -22.8 ____ 7,336 -29.0 ____ 8.276 -36.1 ____ 9.328 -43.8 __-- 10,646-61.1 ____ 11.962 -66.6 ____ 1% 788 -56.5 __-_ 13,730 -66.8 ____
147 683 30 30 30 30 30 30 30 30 30 30 30 30 30 29
29
28 28 19 14 11
---
1,355 9.0 66 117 (*) ____
1,481 9.0 60 1.883 6.6 61
2,609 1.2 66
3,068 -3.0 61 3.643 -7.4 66 4,259-11.9 68
4,918 -16.6 67
6.629 -21.4 ____ 6.405 -27.1 ___.
8,163 -40.6 ____ 9,189 -48.6 ____ 10.367 -56.9 ____ 11.762 -67.2 ____ 12 613 -67.0 ____ 13,676 -65.6 ____
7.239 -33.4 ____
Oklahoma City Okla. Omaha, Nebr. (867.0 mb.j I
(978.8 mb.) Phoenlx Aris. Pittsburgh, Pa. Portland, Maine Rapid City, 6. Dak. St. Paul Minn. W1.0 Ab.) (9729 mb.) (1,016.3 mb.) (901.9 mb.) (887.7bb.)
BUrfaCe ________ 1.ooO ___________ 950 ____________ WO ____________ 850 ____________ 800 ____________ 750 ____________ 700 ____________ 650 ____________ 800 ____________ 660 ____________ Mx). ___________ 460. __.________
3Bl____________
300 ____________ w). ___________ 200 ____________ 176 ____________ 150 ____________ 126
400 .__.________
San Antonio, Tex. Ban Jhan, P. R. Santa Maria, Calif. h u l t 6te. Marie Mich. Spokane, Wash. Gwan Island, W. I. Tacubaya, Mexico.1 (984.8 mb.) (1,016.6 mb.) (1,008.7 mb.) (989.7 mb.j (946.0 mb.) (1,013.6 mb.) (_______ mb.)
--__--____----- -------__--
27 801 14.2 74 30 308 9.1 73 30 330 22.7 27 30 382 9.6 63 30 20 3.4 76 30 DBo 6. 27 106 (*) ___- 30 128 (*) ____ 30 80 (1 ___- 30 161 (9 ____ 30 151 3.9 69 30 123 (*) 27 640 14.2 70 30 666 7.4 71 30 633 23.4 22 30 686 8.9 63 30 670 2 9 62 30 552 (*)
27 995 11.0 69 30 998 6 2 74 30 887 19 6 23 30 1025 7 2 66 30 l o o 3 7 67 30 997 (*) 27 1,473 10.4 68 30 1464 3:s 74 30 1485 153 26 30 11484 -514 61 30 11460 --13 69 30 1463 4. 17 1976 8.7 67 30 1054 1.5 71 30 I:D% 1 0 8 30 30 1:QeS 3.3 66 30 1942 -310 53 30 119% 1. 27 $611 6.8 49 80 $479 -.9 66 30 2,632 6.2 34 30 2,515 .7 57 30 $458 -4.8 61 30 i 4 7 2 -2. 27 8,WD 2.6 42 30 3,021 -3.6 67 30 3,088 1.4 35 29 3,060-2.4 68 30 2,882-7.2 50 30 3,016-5. % 3,666 -1.6 36 29 3 607 -6.9 60 30 3 683 -2 7 34 29 3 852 -h 4 67 30 3 673 -10 2 65 30 3 697 -8 26 4,306 -6.6 32 28 4:225 -10.8 48 29 4309 -7.1 34 ZQ 4:270 -0.0 65 30 4180 -133 67 30 4211 -1 2 26 4,954 -10.0 ____ 28 4 8W -15.1 49 29 4986 -11.8 35 2% 4 944 -13.1 56 30 4841 --16:7 54 30 4871 -16: 26 6,710-16.0 ____ 28 5602-20.2 61 29 6706-17.0 ____ 29 6659-17.7 55 30 5548-21.2 ___. 30 5560-21. 24 6,498-20.9 ____ 28 6381-26.9 ____ 29 fl:406-22.7 .___ 29 6444-23.0 ____ 30 6326-26.6 ____ 30 6364-27.
23 6298-34.0 ____ 26 8145-39.1 ____ 29 8283-36.8 ____ B 6,229-36.4 ___. 30 8087-39.4 _._. 30 8.111-40. 14 9371-40.8 ____ 26 d185-46.3.--. 28 d342-43.7 ____ 28 9.281-43.7 ____ 30 9:125-46.8 _.__ 29 9139-47. 11 16 590 -48.6 ____ 25 10: 333 -53.
8 12.044-65.4 ____ 23 11,799--56.6 -... 20 11,867-69.4 ____ 26 11,g(w-59.3 ____ 24 11,753-58.0 ___. 10 11,770-57. 5 12,841 -58.9 _.__ 21 12,640 -56.6 ____ 12 12,796 -59.3 ____ 22 12,748 -60.4 ___. 19 12,616 -58.3 .___ ___. _____._ _____ ____ _______ ______ _.__ 13 13,618 -56.7 ____ 6 13,764 -68.7 .___ 19 13,713 -69.6 ____ 12 13,627 -66.6 _.__ ____ _______ _____ ................................. 6 14,7W-65.4---- ________________.____ 11 14,652-60.2 ____ 8 14,663-M.3 _________ --: __...__.
a4 7358-27.2____ 28 7217-32.3..-. ae 7342-z.8 .___ 29 7,m2--28.1 __.. 30 7:150-32.4 ..-. 30 7:187--33.
25 16 379 -62 7 ____ 26 16 663 -52.2 ____ 28 10.483 -52 2 ____ 29 10,314 -53.8 ___.
1 Data not yet rscsfvad. *Temperature and relative humidity data for thia level am not amUabL or are avdabl$ only for m t s h dam. Bee nota entitled Change in Bummarlratlon of Radiosonde Data, p. 6. in the January 1846 iasue of the M o m r WZATEEB REVISW.
--All o ~r v a t i o n s schednled oaoo and exept at ciudM Victoria Mfmtlan. and Merlda, where they am taken ne$ &, b. 6. T.
(In a few casea temperature or humidity data may be mfslin for om or more atan&d preasure sur-
,MW of some oh nervation#.) &lath6 humidty dam are not publlrbsd fa stPndard
pre- surfaces having a c o r n onding mean temperature below -%lo C. All relative humidity obsarvatrons are obtabed by electric hymometer and have been adjusted to compensate for the values occurrin~ below the operating r m m of the bumid- ity element. For explanation of the adjustment see article entitled Curve Method for Me- of Relative Humidity.P. 2% MONTHLY WPATHIB RBvmwa,
None of the m e w included in them tables are baaed on lesa than 16 observationa at the Number of obaervatim refers to thoae of dynamic height on1 &- a 5 o b m v a t i m at a standard p m ~ level.
71
._-- 85 69 73 74 69
63 58 52
.___
____ ____ ____ ____ ___.
.__.
30 226 6.8 73 30 123 (0 ) ____ 30 643 4.1 70
30 980 1.7 74
30 1,439 -.3 67
30 1,923 -2.0 61 30 2,440 -4.1 60 30 2976 -6.8 69 30 3.567 -10.2 63
30 4,164 -13.8 6l 30 4,820 -18.1 68 30 6,525 -22.9 ____ 30 6,296-28.1 ____ 30 7,125 -34.3 ____ 30 8,046 -41.3 ____ 30 9.075 -48.7 ____ 25 10,257 -64.6 ____ 18 11,664 -65.9 ____ 11 12 525 -E 4 6 ____ 7 13:608-529 ____
62 MONTHLY WEATHER REVIEW lLwIL 1947
- d
s
8 - a Etation
3
--
1,488 6 Akron, Ohio _________ 2,500 5 Louisville. Ky _______ 1,700 5 Birmlnghsm. Ala ____ 1,188 6 Muskegon. Mich _____ 1.634 6 Sprlngtleld, Ill _._____
2,500 5 Memphfs, T m ______ 1.881 4 BW8, Oreg __________ 2,083 5 Cheyenne Wyo ______ 2,178 5 Bandberg,Calif ______
TABLE 2.-Free-air resultant winds b a d on pilot balloon obscrvationa made near 6 p . m., E. 8. T. (dg00 G. C. T.) during April 1947. Direc- lions given i n degrees from nwth (N=960, E=90, S=18Oo, W=670). Velocities i n meters per second
I
- R d R d 1 u
a
3 a 1 7!
2 2 a Etation v
? 3 7 a Station v
---- ----
38.7 8w. 2,501 5 Akron, Ohio _______ ___ 75.8 nw. 10,738 3 Akron, Ohio. 63.2 88w. 2610 5 Louisville, Ky. ______ 72.0 wnw. 12 830 2 Hattmas N. C. 33.4 sw. 3 871 16 Charleston 8. C ..___ 70.0 waw. 13:972 17 Miami, h a . 52.6 nw. 4905 14 Bismarck, k. Dag--- 83.0 wsw. 9.621 5 SaultSta.hIarie,Mlch. 47.4 8. 3,959 5 Columbia. Mo _.._.__ 74.0 ssw. 10,179 11 Columbia, Mo. 63.8 8w. 3,683 5 hlemphis. Tenn _____ 81.8 sw. 11 369 12 LittleRock Ark 48.2 nw. 5,000 4 TatooshIa Wash--- 72.0 W. 10:043 29 Tatoosh Is.,W&. 60.8 mw. 5,000 0 Oakland %aUf .______ 75.0 wsw. 0,214 3 Grand Junction Colo. 62.0 mw. 2,727 0 Sandber;, Calif ______ 86.0 wow. 10,425 3 LasVegas, Nev:
Nev. QrandJunc- Greensboro, Havre Jackson- Joliet, Las Vegas, Little hledford, Mlami, Mobile, Nashville, New York,
1
(l,glOm.)
1
tion, COlO.
1
N. C.
1
M o d
1
ville Fla. I Ill. 1
Nev. iRock,Ark.
1
Oreg.
I
Fla. 1 Ala. 1
Tenn.
1
N. Y. (1,475 m.) (271 m.) (767 m.) (16m.) (178 m.) (575 m.) (88 m.) (416 m.) (12 m.) (66 m.) (194 m.) (15 m.)
187 1.8 27 280 1.7 187 2.1 27 280 2.0 208 3.5 25 249 2.8 212 4.2 n 238 4.4 216 6.6 17 243 6.5
263 11.3 13 255 9.4 272 14.7 11 270 9.2 277 17.1 ___ ___. ..__
260 a9 14 2fi5 8.4
- - - - - - -. - - - - - . . - - -.
____ __-. ... .--. __--
239 1.2 27 336 5.2 237 2 2 ... _-_. .___ 239 3.5 27 336 5.2 244 4.0 27 335 5.3 7.52 4.3 24 319 6.0
270 4.8 19 293 7.5 275 6.0 10 304 7.9 274 8.3 ___ ..-. _...
276 11.7 --_ .._. _-_- 283 15.0 ___ .___ ____
265 ~i 20 280 6.0
-
28
28
26 24 22 10 18 16 13
10
--.
-
a06 1.3 25 286 1.8 218 2.3 25 291 1.7 211 4.6 20 253 3.0 228 6.3 16 275 5.0 245 8.4 16 278 7.1 255 12.3 15 285 7.2 252 13.8 -.. .._. .___
280 15.7 ... .._. .___
26319.0.-. ..-. ____ 272 18.3 .._ ..-. ____ - - - - - - - - - -. -. -. . . - -
-
!Xi 162 2.4 30 29 151 3.0 30 29 159 4.0 25 21 187 4.3 ?4 21 216 5.9 23
18 241 6.3 21 14 252 8.5 19 13 252 12.0 19 13 257 14.0 17 13 263 15.1 17
___ ____ ___. l a
257 3.1 23 318 3.6 274 2.0 23 317 4.0 289 1.3 22 297 3.7 318 2.0 18 234 5.1
323 3.2 18 291 8.0 318 3.3 16 293 11.4 333 3.6 15 289 13.1 312 5.8 12 286 18.2 312 d.7 ___ ____ ____ 317 10.1 ___ ____ .___
325 13.0 ___ ____ .__.
I I I I I
29 254 3.2 29 233 2.0 28 210 4.1 29 238 4.0.. ..._._._. 25 218 5.5 29 211 4.8 29 246 4.0 27 2% 6.3 26 238 4.5 28 245 5.2 24 241 7.8 23 262 4.9 24 261 5.8 22 256 10.8
19 280 6.2 17 277 5.8 21 270 14.7
15 2% 11.6 11 204 9.7 18 270 22.2 14 298 11.1 11 280 9.8 14 271 22.8
.-. ____ ____ 10 314 15.3 ___ ____ ____
19 280 5.9 21 abl 5.1 22 mn 13.4
15 mi 9. I 11 27s 8.0 19 277 i a s
TABLE 3.-Mazimicm free-air wind velocities (m. p . e.) for different sections of the United States based on pilol balloon observations during
8ection
April 1947
8urIBca to 2,600 meters (m. a 1.) 2.w1 to 5,000 meters (m. 8.1.)
II Above 5,000 metera (m. 8.1.)
--
I
--
47.6 wsw. 50.7 mw. 36.8 mw. 38.6 8w. 51.4 m w . 55.4 8W.
48.4 nw.
39.0 nnw. 3 a a UW.
I
1 Maine, Vermont. New Hampshire, Mnssachurettd, Rhode Island, Connecticut,
3 Delaware Maryland Virginia, West Vkgmia, aouthern Ohio, Kentucky, eastern
3 South Carollna Georgia Florida and Alabama
4 Michigan W&nsin dAinnesota North Dakoh and South Dakota.
8 Indiana, hlhoh, Iowb, NebrasLq KSMM, and Mi~wuri.
1 Mlssfssippi, Arkam8s, Loutalana, Oklahoma, Tam (except El Paso), and weatern
7 Montana Idaho Waahin ton and
8 W y m & Co1o;ado Ut& n&thernq%a, and northern California.
I Southern CalUornla: southem Nevada, Arizona, New Mexico, and extreme nest
New York. New Jersey Pennsylvania, and pqrthern Ohio. T0llUWSW.
Tennessee. &d North Ckrolins.
Term.