Aikyam-Lab/Synoptic-Bench huggingface dataset:
925MB THERMAL TROF EXODUS INTO LWR GRTLKS WITH 6-8C MODERATION F6-18 ALONG WITH AT LEAST PARTIAL INSOLATION SHOULD YIELD DECENT DIURNAL RISE. OVERNIGHT UPSTREAM CANADIAN/NRN ROCKIES RIDGE/COL TO SLIDE SEWD INTO WRN GRTLKS. NORTHERN GREAT LAKES TROUGH WILL BE EXITING THE AREA AT THE START OF THE PERIOD. IN THE FORM OF FLURRIES OR EVEN A TOUCH OF FREEZING DRIZZLE WITH LACK OF ICE PRODUCTION.
HIGH PRESSURE WILL REMAIN DOMINANT THROUGH THE REST OF TODAY AND TONIGHT. WHICH SHOULD KEEP HIGH TEMPERATURES A FEW DEGREES COOLER THAN AVERAGE. COLD FRONT WILL CROSS THE AREA TONIGHT. IT WILL BE DIFFICULT FOR THE FRONT TO PRODUCE MUCH PRECIP AS UPPER LEVEL SUPPORT IS WEAK AND THE MOISTURE IS IN THE LOWER LEVELS. WILL CONTINUE WITH THE THINKING OF KEEPING HIGHEST POPS ACROSS THE NORTH AND RIDGES.
249 PM CST THU JAN 15 2015 MID STATE IN BETWEEN THE GULF SYSTEM TO OUR SOUTH AND UPPER TROUGH THAT HAS MOVED IN FROM THE WEST PRODUCING A BAND OF LIGHT SNOW ACROSS WESTERN AND SOUTH CENTRAL KENTUCKY DURING THE MORNING HOURS. TEMPS ARE SLOWLY RISING AND AT 20Z ARE ABOVE FREEZING MOST AREAS WITH NASHVILLE APPROACHING 40 DEGREES.
A FEW FLURRIES OR SNOW SHOWERS MAY ACCOMPANY THE COLD FRONT PASSAGE DROPPING SOUTHWARD OVER THE STATE TODAY. THE HIGH PRESSURE SYSTEM QUICKLY SLIDES EASTWARD IN THE NORTHWEST FLOW ALOFT WITH WINDS TURNING LIGHT FROM THE EAST BY FRIDAY FRIDAY MORNING TO END THE LAKE SUPERIOR SNOW OVER VILAS COUNTY. BUT POSSIBLY SOME CLEARING COULD OCCUR OVER NORTHEAST WISCONSIN IN THE WAKE OF THE COLD FRONT AND SUBSIDENCE REGION OF THE UPPER JET.
330 PM CST THU JAN 15 2015 SFC ANALYSIS SHOWS HIGH PRESSURE NOW BUILDING ACROSS THE MID-SOUTH AND WRN GULF COAST REGIONS AS LOW PRESSURE CONTINUES PUSHING EWD ACROSS THE CNTL GULF WATERS. EXPECTING ONE COLD NIGHT TONIGHT WITH MINS AT OR NEAR FREEZING OVER THE ENTIRE NRN 1/2 OF THE AREA. FRIDAY WILL FEEL DOWNRIGHT BALMY AFTER THE PAST SEVERAL DAYS OF TEMPS STRUGGLING TO THE LOWER 40S.
130 PM PST THU JAN 15 2015 HIGH PRESSURE AND OFFSHORE FLOW WILL BRING FAIR SKIES AND ABOVE NORMAL TEMPERATURES THROUGH THE WEEKEND.
WARMING TREND WILL CONTINUE FOR FRI AS THE SURFACE FLOW SHIFTS MORE TO THE WEST AND EVENTUALLY TO THE SOUTHWEST AS LEE SIDE TROUGHING DEVELOPS OVER THE PLAINS. NORTHWEST MID/UPPER FLOW IS PROGGED TO CONTINUE WHICH WILL RESULT IN ANOTHER COLD FRONT MOVING ACROSS THE AREA ON TUE-WED WITH A RETURN TO MORE SEASONABLE TEMPERATURES BY THE END OF THE FORECAST PERIOD. IN RESPONSE TO LEE TROUGH DEVELOPMENT.
400 PM EST THU JAN 15 2015 A COLD FRONT WILL CROSS THE AREA ON FRIDAY.
433 PM EST THU JAN 15 2015 WEAK LOW PRESSURE WILL PASS SOUTH OF THE AREA AND OFF THE CAROLINA COAST TONIGHT. A COLD FRONT WILL THEN MOVE THROUGH THE MID- ATLANTIC FRIDAY.
IF PCPN/CLOUD COVER EXITS EARLIER COULD SEE SOME MIDDLE 30S POSSIBLE ACROSS SE GA AND SUWANNEE RIVER VALLEY BY SUNRISE BUT STILL NOT EXPECTING ANY SUB-FREEZING TEMPS TO FOLLOW THIS RAIN EVENT BY MORNING. HIGH PRESSURE WILL BUILD IN FROM OUR WEST WITH COOL DRY AIR ADVECTION MAKING FOR A SEASONABLY COOL BUT BRIGHT AND SUNNY DAY. HIGH PRESSURE RIDGE WILL MOVE ACROSS THE REGION FRIDAY NIGHT.
1235 PM EST THU JAN 15 2015 HIGH PRESSURE WILL CONTINUE OVER THE AREA TODAY.
326 PM EST THU JAN 15 2015 WEAK LOW PRESSURE WILL PASS SOUTH OF THE AREA AND OFF THE CAROLINA COAST TONIGHT. A COLD FRONT WILL THEN MOVE THROUGH THE MID- ATLANTIC FRIDAY.
A SHORT WAVE TROUGH WAS MOVE SOUTHEAST THROUGH WISCONSIN. ANOTHER SHORT WAVE TROUGH MOVE SOUTHEAST ACROSS SOUTHERN ONTARIO.
850MB THERMAL RIDGE ACROSS THE PLAINS WILL PASS INTO THE STATE BY MIDDAY. WEAK TROF AXIS IS EXPECTED TO MOVE ACROSS CENTRAL IOWA THIS MORNING WITH SURFACE WINDS SHIFTING FROM SOUTHWEST TO WEST BY AFTERNOON. THE RESPONSE WILL BE LESS BUT READINGS WILL STILL BE ABOVE NORMAL GIVEN THE SUNSHINE AND PROXIMITY OF THE THERMAL RIDGE. NORTHWESTERLY FLOW ALOFT WITH RIDGE ACROSS ROCKIES WILL GRADUALLY BREAK DOWN. BECOMING MORE ZONAL AS LOW PRESSURE SYSTEM DROPS SOUTH ACROSS SOUTHERN CANADA. GFS HAS BEGUN TO BRING SLIGHTLY COOLER 850MB TEMPS INTO WESTERN IOWA FRIDAY. WITH SLIGHTLY COOLER TEMPERATURES IN THE NORTH.
/ISSUED 258 AM CST THU JAN 15 2015/ SATELLITE LOOP SHOWS THE UPPER LEVEL TROUGH AXIS IS IN THE PROCESS OF MOVING THROUGH THE REGION WITH CLEARING SKIES OCCURRING ACROSS NORTHWEST TEXAS. THE SUNSHINE TODAY WILL BE WELCOME NEWS FOR MANY AND WILL SEND TEMPERATURES WARMING INTO THE LOW TO MID 50S. GIVEN THE HIGH AMOUNTS OF NEAR SURFACE MOISTURE. THE UPPER LEVEL PATTERN FOR THE NEXT SEVERAL DAYS WILL FEATURE A FLAT WEST/NORTHWEST FLOW WITH A COUPLE OF MINOR TROUGHS MOVING THROUGH THE REGION THAT WILL BRING WEAK COLD FRONTS. THIS PATTERN WILL ENSURE WESTERLY DOWNSLOPE FLOW IN THE LOW TO MID LEVELS WHICH MEANS MOSTLY CLEAR SKIES WILL PREVAIL WITH WARM DAYTIME HIGHS IN THE 60S AND COOL OVERNIGHT LOWS IN THE 30S AND LOW 40S.
WIND SPEEDS WILL INCREASE TO 12-15 KTS MID MORNING FRIDAY IN RESPONSE TO A DEEPENING SURFACE LEE SIDE TROUGH. /ISSUED 311 AM CST THU JAN 15 2015/ IR SATELLITE LOOP SHOWS LOW STRATUS DEPARTING EARLY THIS MORNING BEHIND AN EASTWARD MOVING UPPER LEVEL TROUGH. UPPER LEVEL RIDGING WILL BUILD EASTWARD TODAY RESULTING IN SIGNIFICANT HEIGHT RISES AND ABOVE NORMAL TEMPERATURES IN THE MID 50S AREA WIDE. DOWNSLOPING AND MIXING INTO INCREASINGLY WARMER MID LEVELS WILL RESULT IN TEMPERATURES REACHING WELL ABOVE NORMAL BY FRIDAY AFTERNOON.
HIGH PRESSURE ALOFT WILL REMAIN ACROSS THE REGION TODAY. WATER VAPOR LOOP SHOWS RIDGING BUILDING INTO THE INTERRIOR WEST. QUIET WEATHER DAY WITH HIGH PRESSURE DOMINATING SURFACE AND ALOFT. MID LEVEL RIDGING REMAINS CENTERED ACROSS THE REGION EARLY THIS MORNING MAINTAINING VALLEY INVERSIONS ACROSS NORTHERN AND CENTRAL UT.
136 PM CST THU JAN 15 2015 A MID/UPPER RIDGE COVERED MUCH OF THE CENTRAL GREAT BASIN AND SOUTHWEST STATES THIS AFTERNOON EXTENDING EASTWARD ACROSS THE ROCKIES AND INTO THE PLAINS WHERE NORTHWEST MID/UPPER FLOW PREVAILED. A POTENT STORM SYSTEM IS PROGGED TO IMPACT THE PACNW BREAKING DOWN THE RIDGE ACROSS THE NORTHERN INTERMOUNTAIN REGION WHILE THE LOW AND MID LEVEL THERMAL RIDGE IS PROGGED TO EXPAND EASTWARD ACROSS THE SOUTHERN AND CENTRAL PLAINS STATES. THE TROUGH OVER THE PACNW TODAY IS PROGGED TO TRANSLATE EASTWARD ACROSS THE NORTHERN ROCKIES AND INTO THE NORTHERN PLAINS ON SAT WHILE A PAC FRONT MOVES SOUTH ACROSS THE CENTRAL PLAINS STATES. BREEZY/WINDY CONDITIONS ARE EXPECTED TO RESULT IN AN ELEVATED GRASSLAND FIRE DANGER ACROSS MUCH OF THE AREA WHILE HIGHS ARE STILL EXPECTED TO CLIMB INTO THE LOW 50S.
WARMER AND DRIER AIR OVER COLORADO TODAY. BUT WEST WINDS WILL BRING WARMER AIR OVER THE SNOWPACK AND WE SHOULD SEE A FAIR AMOUNT OF MELTING TODAY WITH HIGHS GETTING INTO THE 40S IN THE COLDER AREAS AND 50S IN THE AREAS WEST OF THE SNOWPACK.
/ISSUED 314 AM CST THU JAN 15 2015/ THE UPPER TROUGH THAT BROUGHT THE LIGHT WINTRY PRECIP TO NE OK AND NW AR YESTERDAY IS SWEEPING ACROSS AS I TYPE. STILL SOME LIGHT ECHOES ON RADAR OVER SE OK INTO W CENTRAL AR IN ADVANCE OF THE TROUGH AXIS.
For Friday, we'll begin to get a push of southwest flow as high pressure builds into the region.
WITH TEMPERATURES HOVERING NEAR FREEZING AND A FEW LOCATIONS JUMPING UP ABOVE FREEZING AT THE SURFACE. MULTIPLE REPORTS OF SLEET FALLING ACROSS NORTHWESTERN ALABAMA AND SOME ICING ON BRIDGES PROMPTED THE ISSUANCE OF A WINTER WEATHER ADVISORY THAT RUNS THROUGH 6 PM THIS EVENING. TEMPERATURES SHOULD HOLD AT TO SLIGHTLY ABOVE FREEZING DURING THIS TIME FRAME AND WE EXPECT A CONTINUED MIXTURE OF RAIN/SLEET. THESE CONDITIONS WILL ALLOW FOR ICING ON BRIDGES AND OVERPASSES. THIS EVENING TEMPERATURES ARE EXPECTED TO DROP BACK DOWN BELOW FREEZING AND WE MAY SEE SOME ICY CONDITIONS ON ROADWAYS OVERNIGHT. WARMER TEMPERATURES OBSERVED IN NE MS SHOULD MOVE INTO THE AREA AND EXPECT ANY REMAINING PRECIP TO TRANSITION BACK TO A MORE RAIN/SLEET MIXTURE OVER THE NEXT FEW HOURS.
FLURRIES AND POSSIBLE FREEZING DRIZZLE TONIGHT INTO FRIDAY ACROSS THE NORTH CENTRAL INTO THE JAMES RIVER VALLEY.
THERE WILL BE SOME LIGHT FOG OR FREEZING FOG IS POSSIBLE AT ALL OF THE TERMINALS THROUGH ABOUT 14 UTC. /ISSUED 336 AM CST THU JAN 15 2015/ SATELLITE IMAGERY EARLY THURSDAY MORNING SHOWS THE LOW CLOUD DECK ACROSS WEST TEXAS SHIFTING TO THE SOUTHEAST WITH CLEARING SKIES WORKING IN FROM THE NORTHWEST. WITH THE CLEARING SKIES AND RISING HEIGHTS BEHIND THE SOUTHWARD SINKING UPPER-TROUGH. THIS DESPITE A VERY WEAK COLD FRONT WORKING SOUTH THROUGH THE FA TODAY.
At the surface, a warm front extends northeast from a low in the central Gulf and lays out east to west abeam the Nature Coast of Florida.
244 PM CST THU JAN 15 2015 AN UPPER TROUGH CONTINUES TO CLEAR THE AREA THIS AFTERNOON. LIGHT NORTHWEST WINDS AND TEMPERATURES IN THE LOWER 50S WERE PREVAILING WITH NORTHWEST WINDS UNDER 10 MPH. THE SOUTH WINDS WILL RESULT IN SLIGHTLY WARMER TEMPERATURES FRIDAY NIGHT.
301 PM EST THU JAN 15 2015 A COLD FRONT WILL CROSS THE AREA ON FRIDAY.
NEARLY FULL SUN IS EXPECTED THIS AFTERNOON WITH HIGHS IN THE 40S WHICH FOLLOWS THE WARMER GUIDANCE INDICATED IN THE RUC. A THERMAL RIDGE STRENGTHENS TONIGHT AS A WARM FRONT SETS UP ACROSS SOUTH DAKOTA. BUT THEN TRANSITION TO NORTHWESTERLY DURING THE EARLY WEEKEND AS A UPPER RIDGE BUILDS INTO THE INTERMOUNTAIN WEST AND A TROUGH ADVECTS EAST ACROSS THE PLAINS. SUCH THAT MUCH OF THIS WARMER AIR ALOFT WILL GO LARGELY UNNOTICED.
ALSO ADJUSTED THE TEMPERATURE GRIDS SLIGHTLY COOLER UNDER THE STRATUS ACROSS ALL OF WESTERN INTO CENTRAL OKLAHOMA, AS WELL AS WESTERN NORTH TEXAS.
HIGH PRESSURE OVER THE EASTERN HALF OF KANSAS EARLY THIS MORNING IS PROGGED TO TRANSLATE EASTWARD ACROSS THE MIDDLE MISSISSIPPI VALLEY TODAY ALLOWING SOUTHERLY WINDS TO RETURN. TEMPERATURES WILL BEGIN TO MODERATE WITH HIGHS TODAY RANGING FROM NEAR 40 ACROSS CENTRAL KANSAS TO THE LOW 30S OVER EASTERN KANSAS. MORE SEASONABLE TEMPERATURES ARE ANTICIPATED TONIGHT WITH LIGHT SOUTHWEST WINDS AND LOWS IN THE LOWER 20S.
WEAK HIGH PRESSURE OVER THE REGION WILL ALLOW FOR MAINLY PARTLY TO MOSTLY SUNNY SKIES.
ANOTHER AREA OF LOW PRESSURE WILL MOVE SOUTH OF THE CWA ACROSS THE PLAINS ON TUE NIGHT/WED.
LOOK FOR CLOUDS TO BE DECREASING TONIGHT AS HIGH PRESSURE SETTLES IN ACROSS THE REGION. DRY WEATHER WILL BE IN PLACE TUESDAY WITH HIGH TEMPS WARMING INTO THE LOWER 50S FOR MOST LOCATIONS. MAINLY IN THE LOW TO MID 30S. OUR WEATHER PATTERN LOOKS TO BE ONE OF A MEAN WESTERN CONUS RIDGE WITH A EASTERN TROUGH. THE MORE POTENT NORTHERN STREAM WILL DROP SE AND HELP CARVE OUT A MORE PRONOUNCED LONGWAVE TROUGH ACROSS THE EASTERN CONUS FOR THU-FRI. LOOK FOR WED TO BE WARMER WITH HIGHS 55-60.
A quick shot of downslope flow on Tuesday will bring highs into the 40s and maybe even lower 50s where ground is bare, but snow cover will keep temperatures several degrees cooler further north with highs only in the 30s.
TEMPERATURES FELL BELOW FREEZING THROUGHOUT THE ENTIRE CWA. AN UPPER LOW CURRENTLY OVER SOUTHERN BAJA WILL MOVE TOWARD SOUTH TEXAS ON TUESDAY.
A STRONG AREA OF HIGH PRESSURE WILL REMAIN ALONG THE CALIFORNIA COAST. EXPECTING HIGH TEMPERATURES TODAY TO RISE WELL ABOVE NORMAL THANKS TO A HIGH PRESSURE RIDGE NOSING IN FROM THE EASTERN PACIFIC.
WITH SHARP WARM UPS AND COOL DOWNS IN ASSOCIATION WITH UPPER WAVES AND THEIR COLD FRONTS IN THE NW FLOW OVER THE PLAINS. THE HIGH SLIDES EAST TONIGHT. FOLLOWED BY A MUCH WARMER DAY ON TUESDAY WITH FAVORABLE WARM LOW LVL SURFACE PATTERN IN PLACE.
A STRONG UPPER LOW CENTERED ACROSS NORTHERN MEXICO REMAINS CUT OFF FROM THE MAIN FLOW. THIS LOW WILL CONTINUE TO MOVE EAST/NORTHEAST TONIGHT AND AS IT DOES SO WILL BE WEAKENING. THE HIGHER AMOUNTS WILL BE ACROSS THE SOUTHERN COUNTIES.
LITTLE ACCUMULATION IN THE LOWER VALLEYS. INCLUDING POTENTIALLY LARGE AMOUNTS OF HEAVY MOUNTAIN SNOW AND WINDY CONDITIONS IN THE SNAKE RIVER PLAIN AND THE RIDGES.
DRY WEATHER IS EXPECTED THROUGH THE COMING WEEKEND AS A RIDGE OF HIGH PRESSURE ALOFT SLOWLY MIGRATES EASTWARD OVER THE DESERT SOUTHWEST.
339 PM CST MON FEB 2 2015 (Tonight and Tuesday) High clouds are spreading north across the southern portion of the forecast area this afternoon, in advance of an upper low that is currently located near the southern tip of the Baja peninsula. Most of the precipitation associated with the upper low will affect areas to our south and east on Tuesday. Southern counties will be mostly cloudy and cooler, with highs in the lower 50s.
325 PM CST MON FEB 2 2015 WE ARE IN FOR A COLD NIGHT WITH HIGH PRESSURE EXPECTED TO SETTLE IN QUICKLY ACROSS THE REGION ON THE HEELS OF COLD ADVECTION.
WITH A DRY NRLY LOW-LEVEL FLOW PROGGED TO CONTINUE WITH HIGH PRESSURE BUILDING OVER THE REGION. WINDS ARE DIMINISHING AS HIGH PRESSURE BUILDS IN.
1122 AM CST MON FEB 2 2015 DEEP FRESH SNOW COVER COMBINED WITH LIGHT WINDS WITH THE HIGH MOVING THROUGH THE AREA IS CAUSING TEMPERATURES TO RISE VERY SLOWLY. ANALYSIS AT 2 AM SHOWS CLEAR SKIES WITH DIMINISHING NW WINDS AS HIGH PRESSURE MOVES IN FROM THE NW.
COASTAL TROUGH BEGINNING TO TAKE SHAPE OFFSHORE IN THE WAKE OF THE COLD FRONT LAST NIGHT. WHILE THE LARGE H5 TROUGH BEGIN TO RACE ACROSS NORTHERN MEXICO. THE H5 TROUGH IS POURING MOISTURE INTO THE REGION FROM THE SOUTHWEST. SOME DIVERGENCE NOTED ALOFT AHEAD OF THE TROUGH WILL BUILD SOME MORE SHOWERY TYPE PRECIPITATION OVERNIGHT. WITH TROUGH WILL BE JUST PASSING THE REGION.
241 PM EST MON FEB 2 2015 HIGH PRESSURE WILL SLIDE INTO THE MID-ATLANTIC STATES.
WARM FRONT/WARMER AIR HAS PUSHED ACROSS MOST OF THE AREA. AND A WARMER START. WILL ALLOW FOR MUCH WARMER LOWS THAN LAST NIGHT. SO THERE WILL BE PLENTY OF SUN WITH A WARMER START TO THE DAY AND GOOD DOWNSLOPE WINDS/MIXING EXPECTED. LATE TUESDAY NIGHT A COLD FRONT WILL MOVE THROUGH NEBRASKA AND INTO THE TRI-STATE AREA. BUT THAT MAY BE TOO WARM IF THE COLD FRONT MOVES FASTER.
Winds will be turning toward the southwest this evening as the ridge passes by, and this should result in early evening low temperatures which will be nearly steady or creep upward as the night progresses. The second wave will have an associated low pressure area that will move into the Grt Lks region, and drag a cold front through the area, bringing higher chances of snow for Wed through Wed night. Chances are higher with this system given that there should be sufficient moisture for this system and the models forecast a secondary low pressure riding northeast along the front Wed afternoon through Wed evening, giving better dynamics to the region. Cold high pressure will dive into the region behind this front and bring very cold temps to the area for Wed night through Thur night.
WEAK UPPER TROUGH PASSES TO THE SOUTHWEST OF THE FORECAST AREA TUESDAY AFTERNOON AND EVENING. A S/W TROF AND JET STREAK WILL BRING SOME LIGHT SNOW TO MAINLY C/EC WI ON TUESDAY NIGHT.
ISSUED BY NATIONAL WEATHER SERVICE WAKEFIELD VA 424 PM EST MON FEB 2 2015 A COLD FRONT WILL PUSH FARTHER OFFSHORE TONIGHT INTO TUESDAY AS HIGH PRESSURE BUILDS IN FROM THE WEST.
355 PM CST MON FEB 2 2015 STRONG CANADIAN SFC RIDGING REMAINS ANCHORED OVER THE SRN PLAINS AND MID MS VALLEY REGION THIS AFTERNOON. VERY DRY AIR AT THE SFC AND DECOUPLING WINDS SHOULD ALLOW FOR TEMPS TO FALL QUICKLY TO/BELOW FREEZING OVER MUCH OF THE REGION BY MID-EVENING. ALTHOUGH THE INCREASING ELEVATED MOISTURE WELL AHEAD OF THE SRN BAJA CLOSED LOW MAY HELP SLOW THE TEMP FALL OVER THE SRN ZONES. ABOUT 5-10 DEGREES WARMER THAN THIS AFTERNOON.
TEMPERATURES THIS AFTERNOON REACHING THE LOWER AND MIDDLE TEENS. GRADIENT WILL EASE WITH TIME AS SURFACE RIDGING BUILDS INTO THE OHIO VALLEY. STRENGTH OF THE EXISTING AIR MASS WILL STILL SUPPORT LOWS MAKING A RUN TOWARD THE LOWER SINGLE DIGITS. MAIN LOW HEIGHT ANOMALY AND UPPER LEVEL TROUGH AXIS IS FORECATED TO BECOME FAIRLY STATIC OVER EASTERN NORTH AMERICA. MAIN COLD FRONT BOUNDARY SHOULD REMAIN JUST NORTH OF THE CWA AND SAGINAW BAY.
1028 MB HIGH PRESSURE SYSTEM IS MOVING OVER THE MIDSOUTH AND WINDS ARE GRADUALLY DIMINISHING FROM WEST TO EAST. TO THE LOWER TO MID 30S ELSW. CLOUDS WILL CONTINUE TO ERODE THIS EVENING AS HIGH PRESSURE PUSHES DIRECTLY OVERHEAD. HIGH PRESSURE WILL SHIFT EAST TUESDAY AND TUESDAY NIGHT AND WINDS WILL SHIFT AROUND TO THE SOUTHWEST.
205 PM EST MON FEB 2 2015 HIGH PRESSURE CROSSES LATE TONIGHT AND TUESDAY.
/ISSUED 153 AM CST MON FEB 2 2015/ THE SYNOPTIC SETUP EARLY THIS MORNING CONSISTED OF UA TROUGHINESS ACROSS THE MID-WEST AND ERN CONUS. UA RIDGING ACROSS THE WRN CONUS THUS PROMOTING DRY NW FLOW ALOFT FOR THE SOUTHERN PLAINS. WHILST SFC LEE TROUGHING BECOMES ESTABLISHED AND THUS PROMOTE SFC WINDS TO VEER TO THE S-SW BY THIS AFTN. A GENERALLY MILD WEEK AHEAD AS THE FCST AREA WILL SIT UNDER WNW TO NW FLOW ALOFT SITUATED BETWEEN A WRN CONUS RIDGE AND ERN CONUS TROUGH.
MODELS IN GOOD AGREEMENT WITH LOW PRESSURE MOVING NORTHEAST INTO THE REGION FROM THE NORTHERN GULF OF MEXICO AND SPREADING RAIN ACROSS THE AREA FROM THE SOUTH.
NORTHERLY WINDS WILL BECOME SOUTH/SOUTHWEST OVERNIGHT AS HIGH PRESSURE MOVES AWAY FROM THE AREA.
1121 AM CST MON FEB 2 2015 FOR 18Z TAFS /ISSUED 1010 AM CST MON FEB 2 2015/ TEMPERATURES DROPPED TO NEAR FREEZING SHORTLY AFTER 12Z AND WITH ENOUGH MOISTURE LINGERING AROUND WE WERE ABLE TO SEE A FEW LIGHT SNOW SHOWERS. STUMPF MVFR CONDITIONS CONTINUE AT BOTH TERMINALS BUT SHOULD IMPROVE TO VFR CONDITIONS LATER THIS AFTERNOON AS HIGH PRESSURE BUILDS INTO THE AREA AND CLOUDS BEGIN TO DISSIPATE.
910 AM PST MON FEB 2 2015 HIGH PRESSURE ALOFT WILL KEEP A WARM AND DRY AIR MASS IN PLACE THROUGH MIDWEEK.
WITH CONTINUED BELOW NORMAL READINGS RANGING FROM THE LOW TEENS /LADYSMITH WI/ TO AROUND 20 DEGREES /MADISON MN/. THE INCREASE IN CLOUDS AND BRIEF BRUSH WITH SOUTHERLY FLOW WILL YIELD WARMER AND MORE TYPICAL NIGHTTIME LOWS FOR EARLY FEBRUARY. GFS IS THE OUTLIER IN TERMS OF WARMER AIR AT LOW LEVELS WHICH CREATES THE POSSIBILITY OF SLEET/SNOW/RAIN. AND FREEZING RAIN DEPENDING UPON SFC TEMPS. IF ANY PRECIPITATION DOES FALL IT WILL BE VERY LIGHT UNTIL COOLER AIR BEGINS TO FILTER ACROSS MN LATE FRI/SAT MORNING. HAVE DECIDED TO HOLD OFF ON FREEZING PRECIPITATION CHC/S.
ISSUED BY NATIONAL WEATHER SERVICE WAKEFIELD VA 422 PM EST MON FEB 2 2015 A COLD FRONT WILL PUSH FARTHER OFFSHORE TONIGHT INTO TUESDAY AS HIGH PRESSURE BUILDS IN FROM THE WEST.
1022 AM CST Mon Feb 2 2015 Cloud cover continues to dissolve across eastern Illinois as high pressure ridging builds east across the Mississippi River. A short lull in the weather pattern tonight as high pressure briefly moves through. Southerly winds, a switch to WAA brings the highs up for Tuesday into the 30s.
VFR CONDITIONS EXPECTED WITH SOME GUSTY NORTHWEST FLOW OVER THE HIGHEST TERRAIN AND THE EAST CENTRAL PLAINS INCLUDING KCQC. DRY WEATHER IS EXPECTED THROUGH THE COMING WEEKEND AS A RIDGE OF HIGH PRESSURE ALOFT SLOWLY MIGRATES EASTWARD OVER THE DESERT SOUTHWEST.
1252 PM EST MON FEB 2 2015 LOW PRESSURE OVER NORTHEAST OHIO SYSTEM WILL MOVE TO THE EAST COAST TODAY. ARCTIC HIGH PRESSURE WILL BUILD SOUTHEAST ACROSS THE FORECAST AREA MONDAY.
1257 PM EST MON FEB 2 2015 LIGHT SNOW ASSOCIATED WITH DEPARTING LOW PRESSURE WILL AFFECT THE REGION TODAY. A MUCH COLDER AIRMASS WILL SETTLE ACROSS THE REGION TODAY IN THE WAKE OF THE LOW.
414 PM EST MON FEB 2 2015 DRY AND COLD WEATHER WILL MOVE IN TONIGHT UNDER HIGH PRESSURE.
1057 AM MST MON FEB 2 2015 THERE IS SOME LIGHT SNOW FALLING IN THE HIGH MOUNTAINS RIGHT NOW. A LEE TROUGH OF LOW PRESSURE ACROSS THE PLAINS WILL ENSURE PLENTY OF DOWNSLOPE WARMING.
/ISSUED 348 AM CST Mon Feb 2 2015/ The upper low that brought rain to the area recently has dropped down into Mexico, but most of the moisture has pushed off to the east so a drier weather pattern can be expected. The low will eject northeast into south Texas late Tuesday which could bring some isolated to widely scattered showers to the southern Big Bend region and lower Trans Pecos with generally light rainfall amounts.
WARNINGS AND ADVISORIES CANCELLED OUTSIDE OF THE RIDGES AS ONLY ANOTHER INCH OR SO BEING BLOWN AROUND THROUGH THE AFTERNOON. WINDS WILL CONTINUE TO BE GUSTY TO 35 MPH OUTSIDE OF THE RIDGES WHERE GUSTS OVER 40 MPH STILL POSSIBLE. BY TONIGHT COLD HIGH PRESSURE BUILDS IN WITH DIMINISHING WINDS. HIGH TEMPS TUES WILL BE WARMER THAN MONDAYS MARKS.
1133 AM CST Mon Feb 2 2015 Cloud cover continues to dissolve across eastern Illinois as high pressure ridging builds east across the Mississippi River. A short lull in the weather pattern tonight as high pressure briefly moves through. Southerly winds, a switch to WAA brings the highs up for Tuesday into the 30s.
AND AROUND ONE HALF INCH FOR THE HIGHEST ELEVATIONS OF FENTRESS COUNTY. RADAR SHOWS MORE SNOW SHOWERS UPSTREAM INTO KY WITH A MID LEVEL TROUGH SWINGING DOWN ACROSS THE AREA. AND UP TO 1 INCH FOR THE HIGHEST SPOTS. BUT THE WINDS WILL DROP OFF SIGNIFICANTLY THIS AFTERNOON AS THE TROUGH MOVES TO OUR EAST. NO PRECIP IS EXPECTED WITH THIS TROUGH.
Look for afternoon temperatures to only warm into the lower 30s. As high pressure sinks into the Arklatex, southerly winds will return to the Ozarks this evening. This will set the stage for a brief warm up Tuesday, with temperatures reaching the lower 50s.
AREAS OF LIFR CIG/VIS IN FOG IN THE LOWER VALLEYS UNTIL 18Z. SERIES OF MOIST UPPER LEVEL IMPULSES WILL SHIFT THROUGH THE LOW AMPLITUDE WNW FLOW ALOFT THROUGH TUESDAY. 9 MICRON IMAGERY INDICATE AREAS OF LOW AND MID CLOUDS OVER IDAHO /FOG AND STRATUS ACROSS THE LOWER T.
925 AM PST MON FEB 2 2015 HIGH PRESSURE ALOFT WILL BRING DRY WEATHER THIS WEEK. WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO THE FIRST WEEK OF FEBRUARY WILL START OUT WARM AND DRY WITH HIGH PRESSURE OVER THE SOUTHWEST.
A LOW AMPLITUDE RIDGE REMAINS ALONG THE WEST COAST THIS MORNING WITH MOISTURE STREAMING THROUGH THE RIDGE AND ACROSS THE NRN CWA. THE FIRST IN A SERIES OF WEAK WAVES TO COME OVER THE RIDGE PASSED LAST NIGHT WITH THE TRAILING PORTION KEEPING SOME LIGHT PRECIP GOING ALONG THE WASATCH FRONT FROM ABOUT THE SALT LAKE VALLEY NORTH. ANOTHER WAVE IS SCHEDULED FOR TUE NIGHT INTO WED WITH THE UPSTREAM RIDGE ADVANCING FAR ENOUGH EAST BY WED AFTN TO SHUNT PRECIP OFF TO THE EAST WITH RIDGING BRINGING DRYING AND WARMING FOR THU INTO FRI.
Upper low is s, in nrn MX, but some mid/high clouds have pushed nwd into the Trans Pecos. As upper low moves ewd nearer to the BB region there will be the possibility of -SHRA Tue in the BB region and Lower Trans Pecos. A cold front will charge across the plains Wed eve. Some differences Mon with ECMWF holding more surface ridging in place.
349 PM EST MON FEB 2 2015 LOW PRESSURE TRACKS EAST OF NEW ENGLAND TONIGHT.
A LIGHT FREEZE WILL BE POSSIBLE OVER MUCH OF THE AREA TONIGHT AS HIGH PRESSURE BUILDS IN FROM THE NORTH TEXAS AND WINDS DIMINISH.
/ISSUED 1058 AM CST MON FEB 2 2015/ CANADIAN SFC RIDGING HAS SETTLED S ACROSS THE SRN PLAINS THIS MORNING. WITH THE RIDGE EXPECTED TO SHIFT SE INTO THE REGION THIS AFTERNOON AND EVENING. BEFORE WE SHOULD NOTE IN INCREASE IN THE THICKENING CIRRUS SHIELD THIS AFTERNOON/EVENING OVER DEEP E TX/SRN SECTIONS OF NCNTRL LA WELL AHEAD OF THE SRN BAJA CLOSED LOW. AND STRONG SFC RIDGING JUST TO THE S. 16Z TEMPS HAVE FINALLY BEGUN TO APPROACH/EXCEED THE FREEZING MARK ALONG/N OF THE I-20 CORRIDOR.
THIS LED TO THE CONTINUING DEVELOPMENT OF A LEE TROUGH ACROSS THE HIGH PLAINS. THE POLAR HIGH PRESSURE ACROSS THE CENTRAL CONUS WAS SLOWLY SHIFTING EAST, BUT THE REMNANT COLD AIR WAS DIFFICULT TO DISLODGE ACROSS CENTRAL AND SOUTH CENTRAL KANSAS WHERE TEMPERATURES WERE STILL STUCK IN THE LOWER 30S AT P28 AND PTT. SOUTHWEST WINDS WILL PREVAIL TONIGHT AS A LEE TROUGH GRADIENT REMAINS IN PLACE, BUT THE NOCTURNAL WINDS WILL NOT EXCEED 10 KNOTS WITH A DECOUPLED ATMOSPHERE. ON TUESDAY, A FAIRLY CLASSIC WEST-NORTHWEST DOWNSLOPE FLOW PATTERN WILL CONTINUE, WITH THE LOWER TROPOSPHERE TEMPERATURES WARMING NICELY TO THE +10 TO +12C RANGE AT 850MB. THE GENERAL PATTERN OVER THE NEXT TWO WEEKS WILL FEATURE UPPER LEVEL RIDGING OVER THE WESTERN UNITED STATES AND TROUGHING OVER THE EAST.
WIND CHILLS WILL GET VERY LOW TONIGHT DESPITE HIGH PRESSURE MOVING IN.