Aikyam-Lab/Synoptic-Bench huggingface dataset:
648 AM CST SUN FEB 21 2016 LOW PRESSURE CENTERED JUST WEST OF ABERDEEN SD CONTINUES TO DROP SOUTHEAST THIS MORNING. SNOW SHOWERS ASSOCIATED WITH THE LOW WILL MOVE OUT OF THE SOUTHEAST FORECAST AREA IN THE NEXT FEW HOURS. COOLER TODAY COMPARED TO THE LAST COUPLE OF DAYS BUT STILL ABOVE AVERAGE FOR FEBRUARY. NORTH AND EAST OF THE MISSOURI RIVER TEMPERATURES WILL BE SLIGHTLY COOLER WITH READINGS IN THE UPPER 20S AND LOW 30S.
There will be a mix of sun and clouds today before becoming cloudy ahead of the next cold front. After the cold front passes on Monday winds are expected to become breezy into the afternoon.
800 AM PST SUN FEB 21 2016 A BUILDING RIDGE OF HIGH PRESSURE ALOFT WILL CONTINUE THE INLAND WARMING TREND TODAY.
933 AM EST SUN FEB 21 2016 THUNDERSTORM COVERAGE CONTINUES TO BE SLIGHTLY GREATER THAN ANTICIPATED THIS MORNING ALONG AND AHEAD OF A COLD FRONT STRETCHING FROM ROUGHLY ZANESVILLE OH TO CINCINNATI. ESPECIALLY GETTING INTO THE HIGHER TERRAIN AND EAST OF NATURAL BRIDGE. THE SHOWERS WERE ALONG A COLD FRONT WITH A WAVE OF LOW PRESSURE TRAVELING ALONG IT. THE LOW WILL PASS BY ALONG THE NORTHERN BORDER OF KY TODAY. WITH THE COLD FRONT DROPPING SOUTH AND EXITING THE STATE EARLY THIS EVENING. OUR LOW LEVEL FLOW WILL SHIFT TO COME OUT OF THE NORTHEAST BEHIND THE COLD FRONT. THE UPPER LEVEL PATTERN WILL SHIFT FROM A ZONAL FLOW TO AN AMPLIFIED PATTERN AS A DEEP TROUGH SETS UP OVER THE EASTERN CONUS.
An upper level trough will amplify across the Great Lakes and OH river valley. Weak low-level CAA will keep Highs a bit cooler on Sunday with mid 50s along the NE border to around 60 south of I-70. Overnight lows will drop into the lower to mid 30s. Next upper trough enters the Pac NW Monday, deepening over the Inter mountain west before encountering a stationary front across OK, developing a widespread area of precip. The accompanying cold front entering the CWA from the northwest does not present much moisture with perhaps just enough to generate light showers Monday evening over north central KS. Latest runs of the models are further south with the upper low, keeping any qpf out of the CWA.
AND A BIT WARMER WEST. WITH SUB FREEZING DAYTIME HIGHS ON SUNDAY WHILE GFS IS IN THE LOW TEENS.
A LOW PRESSURE SYSTEM WAS MOVING ALONG THIS BOUNDARY OVER KY. AS THE LOW CENTER CONTINUES MOVING EASTWARD THIS AFTERNOON.
COOLER TODAY. EXPECT TEMPS IN THE LOWER TO MID 50S OVER THE PLAINS. AND SOME VERY LOW POPS FOR THE HIGHEST ELEVATIONS. BUT COULD STILL SEE SOME RESIDUAL LOW-MID CLOUD DECKS HANGING AROUND INTO EARLY MON MORNING AS THE UPSTREAM TROUGH OVER THE PACNW CONTINUES TO ADVANCE INTO THE NRN AND CENTRAL ROCKIES. SHOULD SEE ENOUGH CLEARING TO ALLOW TEMPS TO FALL INTO THE MID 20S OVER THE PLAINS AND TEENS FOR THE HIGH VALLEYS.
ALTHOUGH I STILL EXPECT NORTH GEORGIA TO EVENTUALLY REALIZE THE HIGHEST POPS OF THE DAY AT LIKELY. TEMPERATURES REMAIN WARMER THAN NORMAL.
MAINLY ACROSS THE HIGHER TERRAIN. SCATTERED SHOWERS PERSIST OVER THE HIGHER TERRAIN AND NEAR THE INTERNATIONAL BORDER THIS MORNING. A COLD FRONT WILL APPROACH FROM THE NORTHWEST WITH NW FLOW FILTERING IN COOLER TEMPERATURES. LARGE AREA OF HIGH PRESSURE BUILDS INTO THE REGION ON MONDAY IN RESPONSE TO NORTHWEST FLOW ALOFT. MONDAY NIGHT SHOULD BE THE COLDEST NIGHT OF THE WEEK WITH CLEAR SKIES AND LIGHT WINDS DEVELOPING IN RESPONSE TO HIGH PRESSURE CENTERED OVER NORTHERN NEW ENGLAND.
CURRENT SHOWERS/ISOLATED THUNDERSTORMS DRAPED ACROSS THE FORECAST AREA ARE PREFRONTAL AS THE COLD FRONT IS STILL TO OUR NW IN THE BOOTHEEL OF MO. HOWEVER, WILL LEAVE VCSH IN BOTH TAFS THRU 22Z AS MOIST SW FLOW PERSISTS AHEAD OF APPROACHING COLD FRONT. COLD FRONT WILL ARRIVE THIS EVENING, WITH A BROKEN BAND OF SHRA/TSRA ANTICIPATED ALONG THE FRONT. MVFR STRATUS DECK WILL BE MAINTAINED BY A WAVE OF LOW PRESSURE APPROACHING FROM THE SW -- WITH ANOTHER ROUND OF RAIN EXPECTED LATER MONDAY AFTN.
WILL BE POSSIBLE EARLY THIS MORNING ALONG AND SOUTH OF THE SLOW MOVING COLD FRONT.
High pressure in the wake of the front should keep the region dry and slightly cooler from tonight through Monday night.
A LOW PRESSURE SYSTEM WAS MOVING ALONG THIS BOUNDARY OVER KY. AS THE LOW CENTER CONTINUES MOVING EASTWARD THIS AFTERNOON. WEAK COLD FRONT CONTINUES PUSHING SOUTH WITH LINE OF SCT -SHRA/ISO -TSRA APPROACHING BNA THEN CSV LATER THIS AFTERNOON.
EXPECT MOSTLY MVFR CEILINGS WITH PERIODS OF LIGHT RAIN THROUGH THE AFTERNOON WITH SOME MIX OF IFR CEILINGS IN RAIN AND WITH SPREAD OF LOWER CLOUD BASES WITH THE APPROACH AND PASSAGE OF A COLD FRONT ACROSS THE ARKLATEX. THEN LIGHT AND VARIABLE BEFORE SHIFTING TO THE WEST AND NORTHERLY WITH COLD FRONTAL APPROACH AND PASSAGE. AS THESE TEMPS CURRENTLY RUNNING A TAD COOLER THAN SURROUNDING AREAS.
DON'T SEE ANY OBSERVATIONS WITH SHOWERS AT THIS POINT BUT WILL KEEP IN AN EVER SO SLIGHT CHANCE OF A SHOWER OVER THE HIGH MOUNTAINS LATE IN THE DAY. A COOLER DAY IS ON TAP FOR TODAY DUE TO THE WEAK COLD FRONT THAT MOVED THROUGH THE AREA OVERNIGHT. THIS IS DUE TO AN EXTREMELY WEAK UPPER TROUGH THAT WILL MOVE ACROSS THE AREA THIS EVENING. EXPECT ONE OR TWO SNOW SHOWERS IN THE NORTHERN MOUNTAINS LATE THIS AFTERNOON AND EARLY EVENING DUE TO THIS TROUGH. UPPER LEVEL TROUGH WILL AMPLIFY OFF THE WEST COAST MONDAY.
High amplitude upper ridging along the West Coast as Pacific frontal system approaches. Ridge axis shifts east this morning as front begins pushing inland across far northern portions of California. Drier and warmer weather on tap this week as upper ridging reestablishes itself over California.
1015 AM EST SUN FEB 21 2016 LOW PRESSURE TRACKING NORTH OF MAINE WILL DRAW A COLD FRONT ACROSS THE REGION TODAY.
CURRENT SHOWERS/ISOLATED THUNDERSTORMS DRAPED ACROSS THE FORECAST AREA ARE PREFRONTAL AS THE COLD FRONT IS STILL TO OUR NW IN THE BOOTHEEL OF MO. AS A SUBTROPICAL SURGE FROM THE SW MERGES WITH THE POLAR JET OVER THE LOWER-48. AN UPPER LEVEL SYSTEM NEARING THE BRITISH COLUMBIA REGION AND OTHER IMPULSES RIDING IN THE NORTHERN STREAM WILL HELP INDUCE TROUGHING OVER THE WESTERN CONUS OVER THE NEXT FEW DAYS.
123 PM EST SUN FEB 21 2016 AN APPROACHING COLD FRONT TONIGHT WILL SLOWLY PUSH THROUGH THE FORECAST AREA MONDAY.
DEFINITELY A COOLER DAY IN THE WAKE OF THE COLD FRONTAL PASSAGE.
Other weak impulses in the zonal flow aloft will swing through the area, helping to push the front south and east as a cold front later today. Temps will be nearly flatlined during the day, then drop fairly sharply tonight as cooler air spills in from the north. Monday should be a dry and more seasonable day with high pressure over the Great Lakes ridging south into the Ohio Valley.
A COLD FRONT TO THE NORTH OF THE STATE WILL DROP SOUTH THROUGH THE STATE THROUGH THIS SUN NIGHT AND MON MORNING. THE COLD FRONT REMAINS NORTH OVER SRN SECTIONS OF MO SO FAR THIS MORNING.
SURFACE TEMPS HOVER AROUND FREEZING OR JUST ABOVE THROUGH 15Z BUT WET BULB TEMPS ARE BELOW 32 SO PTYPE SHOULD BE PRIMARILY SNOW. WITH THE SLIGHTLY HIGHER QPF NOW FORECAST SNOWFALL AMOUNTS WILL LIKELY GET TO AROUND A HALF INCH OR SO ALONG THE HIGHWAY 20 CORRIDOR WHICH APPEARS TO BE WHERE THE AXIS OF BEST PRECIP WILL OCCUR. NEAR 40 AROUND THE HIGHWAY 20 CORRIDOR WITH MID 40S FURTHER SOUTH. A STRONG UPPER LEVEL SYSTEM WILL MOVE INTO THE PACIFIC NORTHWEST TODAY AND BREAK DOWN THE WESTERN RIDGE BY EARLY MONDAY. DRIVEN BY THE LARGE HUDSON BAY UPPER HIGH. WILL CARVE OUT A BROAD TROUGH THROUGH THE CENTRAL AND SOUTHERN PLAINS.
835 AM MST SUN FEB 21 2016 ANOTHER UNSEASONABLY STRONG HIGH PRESSURE SYSTEM IS FORECAST TO BUILD OVER THE REGION THROUGH MONDAY.
BECAUSE OF THIS LOWERED MIX TEMPERATURES CENTRAL AND EAST A BIT. LOW PRESSURE CENTERED JUST WEST OF ABERDEEN SD CONTINUES TO DROP SOUTHEAST THIS MORNING. SNOW SHOWERS ASSOCIATED WITH THE LOW WILL MOVE OUT OF THE SOUTHEAST FORECAST AREA IN THE NEXT FEW HOURS. COOLER TODAY COMPARED TO THE LAST COUPLE OF DAYS BUT STILL ABOVE AVERAGE FOR FEBRUARY. NORTH AND EAST OF THE MISSOURI RIVER TEMPERATURES WILL BE SLIGHTLY COOLER WITH READINGS IN THE UPPER 20S AND LOW 30S.
DEEP SOUTH TEXAS WILL REMAIN ON THE NORTHERN PERIPHERY OF 500 MB HIGH PRESSURE TODAY RESULTING IN DRY CONDITIONS ACROSS THE CWA. FEW SHOWERS ARE POSSIBLE LATE TONIGHT FOR THE NORTHERN RANCHLANDS WITH THE FRONT IN THE AREA AND THE MID LEVEL TROUGH APPROACHING FROM THE WEST.
1223 PM EST SUN FEB 21 2016 LOW PRESSURE WILL SPREAD RAIN SOUTH OF THE I 70 CORRIDOR TODAY. COOLER AIR WILL FILTER OVER THE REGION AS THE SYSTEM EXITS. HIGH TEMPERATURES ALONG THE INTERSTATE 80 CORRIDOR WILL REMAIN ON THE LOW SIDE WITH CLOUD COVER EXPECTED ALL DAY.
549 AM EST SUN FEB 21 2016 LOW PRESSURE WILL SPREAD RAIN SOUTH OF THE I 70 CORRIDOR TODAY. COOLER AIR WILL FILTER OVER THE REGION AS THE SYSTEM EXITS. COOLER AIR WILL SLOWLY MOVE SOUTHWARD OVER THE REGION AS THAT SYSTEM EXITS THIS AFTN.
AS A SUBTROPICAL SURGE FROM THE SW MERGES WITH THE POLAR JET OVER THE LOWER-48. AN UPPER LEVEL SYSTEM NEARING THE BRITISH COLUMBIA REGION AND OTHER IMPULSES RIDING IN THE NORTHERN STREAM WILL HELP INDUCE TROUGHING OVER THE WESTERN CONUS OVER THE NEXT FEW DAYS.
THE WARMING TREND WILL CONTINUE THROUGH MONDAY AS OFFSHORE FLOW COMBINES WITH BUILDING HIGH PRESSURE ALOFT. AN APPROACHING LOW PRESSURE SYSTEM WILL ALLOW ONSHORE FLOW AND A COOLING TREND TO DEVELOP BY THE WEEKEND.
200 PM EST SUN FEB 21 2016 A COLD FRONT WILL PUSH SOUTH ACROSS THE AREA EARLY MONDAY MORNING.
527 AM CST SUN FEB 21 2016 A WEAK AREA OF LOW PRESSURE WILL TRACK E-SE ACROSS THE REGION THROUGH MIDDAY. HIGHS SHOULD EASILY REBOUND INTO THE UPPER 30S TO THE LOWER 50S.
813 AM EST SUN FEB 21 2016 LOW PRESSURE TRACKING NORTH OF MAINE WILL DRAW A COLD FRONT ACROSS THE REGION TODAY.
1228 PM CST SUN FEB 21 2016 UPDATED HOURLY TEMPERATURE TRENDS THIS MORNING AS THE CLOUD COVER HAS KEPT THE REGION COOLER THAN PREVIOUSLY EXPECTED. EXPECTING MORE SCATTERED ACTIVITY TO PUSH SOUTHWARD TOWARD KALI/KCRP BY MID TO LATE MORNING AHEAD OF A SLOW MOVING COLD FRONT. WATER VAPOR IMAGERY SHOWS THE MID TO UPPER LEVEL SHORT WAVE TROUGH FROM ARIZONA TO WEST OF BAJA CALIFORNIA. THIS SHORT WAVE TROUGH WILL MOVE TO THE EAST-SOUTHEAST THROUGH TONIGHT AND BE OVER THE COASTAL PLAINS BY 12Z MONDAY. THE SHORT WAVE TROUGH WILL BE EXITING TO THE EAST BY 18Z MONDAY WITH SUBSIDENCE LIKELY INHIBITING RAIN CHANCES DURING THE AFTERNOON.
607 AM EST SUN FEB 21 2016 THE AVIATION SECTION HAS BEEN UPDATED BELOW AN AREA OF LOW PRESSURE AND COLD FRONT OVER SOUTHERN INDIANA WILL MOVE ON TO THE EAST AS HIGH PRESSURE OVER SOUTH CENTRAL CANADA BUILDS EAST SOUTHEAST INTO THE GREAT LAKES BY MONDAY.
Otherwise, cold front has pushed into southern IN and should generally mark the back edge of the precip shield as it slides southeast. Other weak impulses in the zonal flow aloft will swing through the area, helping to push the front south and east as a cold front later today. Temps will be nearly flatlined during the day, then drop fairly sharply tonight as cooler air spills in from the north. Monday should be a dry and more seasonable day with high pressure over the Great Lakes ridging south into the Ohio Valley.
A BACKDOOR COLD FRONT WILL DROP SOUTH ACROSS THE REGION TODAY WHILE UPPER JETS PROVIDE FORCING TO INDUCE A SURFACE WAVE TO MOVE SLOWLY ALONG THE FRONT WITH LOW LEVEL CONVERGENCE AND WARM ADVECTION.
417 AM PST SUN FEB 21 2016 DRY WEATHER WILL CONTINUE FOR THE NEXT SEVERAL DAYS AS A RIDGE OF HIGH PRESSURE DOMINATES THE PATTERN.
947 AM CST SUN FEB 21 2016 Clouds associated with the cold front have now pushed south of our forecast area, with a fairly widespread area of sunshine occurring. Northerly winds between a departing cold front and approaching ridge of high pressure will help transport cooler air into the area. That being said, it will still be warmer than normal today, with highs ranging from the upper 40s to middle 50s.
High pressure east of the Florida Peninsula will weaken today with a weak frontal zone located across the Mid South and into the Carolinas.
A SHARPENING RIDGE OFF THE WEST COAST ALLOWS A DISTURBANCE TO DIVE IN FROM THE PACIFIC NW.
513 AM EST SUN FEB 21 2016 LOW PRESSURE TRACKING NORTH OF MAINE WILL DRAW A COLD FRONT ACROSS THE REGION TODAY.
1120 AM CST SUN FEB 21 2016 Cold front continues to advance south and may be the focus for an isolated shower or storm later today across far SE OK. cooler and drier air will work its way into the region behind the front. The front is advancing south and will clear out the low level moisture. SKIES RANGE FROM CLEAR TO IFR THIS MORNING ACROSS EASTERN OKLAHOMA AND WESTERN ARKANSAS AS A COLD FRONT MOVES THROUGH THE REGION. /ISSUED 321 AM CST SUN FEB 21 2016/ A cold front has entered northeast Oklahoma early this morning and will sweep south across the rest of the forecast area today. Temperatures will be quite a bit cooler behind the front today, but will still be several degrees above normal.
A WEAK AREA OF LOW PRESSURE WILL TRACK E-SE ACROSS THE REGION THROUGH MIDDAY. HIGHS SHOULD EASILY REBOUND INTO THE UPPER 30S TO THE LOWER 50S.
946 AM EST SUN FEB 21 2016 HIGH PRESSURE OFF THE SOUTHEAST COAST WILL BE SUPPRESSED FARTHER SOUTHWARD AHEAD OF AN APPROACHING COLD FRONT. THE COLD FRONT WILL SLOWLY PUSH THROUGH THE FORECAST AREA MONDAY.
DRY AND UNSEASONABLY WARM WEATHER CONDITIONS WILL PERSIST OVER THE REGION THROUGH MUCH OF THE UPCOMING WEEK AS HIGH PRESSURE BUILDS ALONG THE WEST COAST. TEMPERATURES ARE RUNNING SLIGHTLY COOLER THEN LAST NIGHT WITH MID TO UPPER 30S IN THE NORTH BAY AND LOW TO MID 40S ELSEWHERE.
258 AM PST SUN FEB 21 2016 HIGH PRESSURE WILL CONTINUE THE INLAND WARMING TREND TODAY.
DRY AND WARMER WEATHER WILL PREVAIL FOR THE REST OF THE WEEK WITH HIGH PRESSURE IN CONTROL. RUN-OF-THE-MILL COLD FRONT WILL MOVE ACROSS WRN WA TODAY. FOLLOWING COLD FRONTAL PASSAGE THIS AFTERNOON. A TRAILING UPPER TROUGH. A SHARP AND AMPLIFYING UPPER RIDGE WILL BUILD ALONG 130W ON MON AFTN. BUT RESISTANCE OF THE INCOMING RIDGE AXIS WILL BE FUTILE. UPPER RIDGE AXIS WILL PASS DIRECTLY OVERHEAD ON TUE.
1140 AM CST SUN FEB 21 2016 Clouds associated with the cold front have now pushed south of our forecast area, with a fairly widespread area of sunshine occurring. Northerly winds between a departing cold front and approaching ridge of high pressure will help transport cooler air into the area. That being said, it will still be warmer than normal today, with highs ranging from the upper 40s to middle 50s.
A WEAK UPPER LEVEL RIDGE WILL PASS QUICKLY OVER THE CWA TODAY AND ALLOW A WEAK TROUGH AND ACCOMPANYING COLD FRONT TO MOVE THROUGH TONIGHT. THIS TROUGH HAS LIMITED MOISTURE AND LATEST MODEL RUNS ARE ALL TRENDING DRIER. AS THIS TROUGH EXITS TO THE EAST EARLY MONDAY. A STRONG RIDGE DEVELOPING OFF THE COAST ACTS TO TURN OUR UPPER LEVEL FLOW TO NWRLY. TEMPS WILL BE A FEW DEGREES ABOVE NORMAL TODAY DUE TO THE RIDGING. AND WILL FALL TO NEAR NORMAL TOMORROW BEHIND THE COLD FRONT.
/ISSUED 1104 AM CST SUN FEB 21 2016/ A COLD FRONT CURRENTLY STRETCHES FROM PADUCAH KENTUCKY TO NEAR CORNING ARKANSAS. AROUND 10 DEGREES WARMER THAN THE AVERAGE HIGH TEMPERATURE FOR LATE FEBRUARY. BUT COOLER CONDITIONS. A COLD FRONT WILL MOVE ACROSS THE MIDSOUTH HELPING TO FOCUS LIFT. THE AIRMASS BEHIND THE FRONT WILL ONLY BE SLIGHTLY COOLER. WITH THE HIGHEST CHANCE OF LIGHT RAIN IN NORTH MISSISSIPPI.
1224 PM EST SUN FEB 21 2016 LOW PRESSURE TRACKING NORTH OF MAINE WILL DRAW A COLD FRONT ACROSS THE REGION TODAY.
A cold front was positioned directly over the Interstate 44 corridor at 3am this morning. For tonight, much cooler temperatures are expected with lows falling into the 30s. A cold Canadian long wave trough will park across the Hudson Bay, bringing in a series of frontal passages to the Ozarks.
DRY AND UNSEASONABLY WARM WEATHER CONDITIONS WILL PERSIST OVER THE REGION THROUGH MUCH OF THE UPCOMING WEEK AS HIGH PRESSURE BUILDS ALONG THE WEST COAST.
TODAY THROUGH MONDAY NIGHT CURRENT SURFACE ANALYSIS SHOWS LOW PRESSURE OVER SOUTH CENTRAL ND. WITH A COLD FRONT DRAPING BACK TO THE WEST ACROSS FAR SOUTHWEST SD INTO EASTERN MT. COOLER TEMPS CAN BE EXPECTED TODAY AS FRONT SINKS SOUTH INTO THE AREA AND STALLS OUT. THE FRONT SHOULD MOVE EAST TONIGHT AS A WARM FRONT.
THE COLD FRONT REMAINS NORTH OVER SRN SECTIONS OF MO SO FAR THIS MORNING.
SKIES RANGE FROM CLEAR TO IFR THIS MORNING ACROSS EASTERN OKLAHOMA AND WESTERN ARKANSAS AS A COLD FRONT MOVES THROUGH THE REGION. /ISSUED 321 AM CST SUN FEB 21 2016/ A cold front has entered northeast Oklahoma early this morning and will sweep south across the rest of the forecast area today. Temperatures will be quite a bit cooler behind the front today, but will still be several degrees above normal.
WATER VAPOR IMAGERY SHOWS THE MID TO UPPER LEVEL SHORT WAVE TROUGH FROM ARIZONA TO WEST OF BAJA CALIFORNIA. THIS SHORT WAVE TROUGH WILL MOVE TO THE EAST-SOUTHEAST THROUGH TONIGHT AND BE OVER THE COASTAL PLAINS BY 12Z MONDAY. THE SHORT WAVE TROUGH WILL BE EXITING TO THE EAST BY 18Z MONDAY WITH SUBSIDENCE LIKELY INHIBITING RAIN CHANCES DURING THE AFTERNOON.
308 AM MST SUN FEB 21 2016 A COOLER DAY IS ON TAP FOR TODAY DUE TO THE WEAK COLD FRONT THAT MOVED THROUGH THE AREA OVERNIGHT. THIS IS DUE TO AN EXTREMELY WEAK UPPER TROUGH THAT WILL MOVE ACROSS THE AREA THIS EVENING. EXPECT ONE OR TWO SNOW SHOWERS IN THE NORTHERN MOUNTAINS LATE THIS AFTERNOON AND EARLY EVENING DUE TO THIS TROUGH. UPPER LEVEL TROUGH WILL AMPLIFY OFF THE WEST COAST MONDAY.
946 AM EST SUN FEB 21 2016 WIDESPREAD SHOWERS DEVELOPING THIS MORNING AHEAD OF A COLD FRONT. CHATTANOOGA AIRPORT, TN 65 50 61 44 / 70 50 10 40 KNOXVILLE MCGHEE TYSON AIRPORT, TN 63 47 58 43 / 80 50 10 30 OAK RIDGE, TN 63 47 59 43 / 100 50 10 30 TRI CITIES AIRPORT, TN 61 44 56 39 / 100 50 10 40.
317 AM PST SUN FEB 21 2016 THE WARMING TREND WILL CONTINUE THROUGH MONDAY AS OFFSHORE FLOW COMBINES WITH BUILDING HIGH PRESSURE ALOFT. AN APPROACHING LOW PRESSURE SYSTEM WILL ALLOW ONSHORE FLOW AND A COOLING TREND TO DEVELOP BY THE WEEKEND.
251 AM PST SUN FEB 21 2016 HIGH PRESSURE WILL STRENGTHEN OVER THE SIERRA AND WESTERN NEVADA THIS WEEK, BRINGING DRY CONDITIONS THROUGH THE WORK WEEK.
HIGH PRESSURE FM SOUTH CENTRAL CANADA WILL BUILD INTO THE UPPER GREAT LAKES THROUGH THE PERIOD. HIGH PRESSURE BUILDING IN FM WEST WILL RESULT IN GRADUAL CLEARING OVER WEST AND CENTRAL COUNTIES AND THIS WILL ALLOW TEMPS TO FALL TO ZERO OR BLO AT TYPICAL INTERIOR COLD SPOTS OF WEST AND CENTRAL UPPER MI. FOLLOWED CLOSELY THE HIGH- RESOLUTION CANADIAN MODEL GUIDANCE TO CAPTURE THE COLDER TEMPS TONIGHT OVER THE WEST AND CENTRAL INTERIOR. SURFACE RIDGING WILL MOVE ACROSS THE UPPER LAKES ON MONDAY WITH A TRANQUIL SEASONABLE DAY EXPECTED.
THE SHOWERS WERE ALONG A COLD FRONT WITH A WAVE OF LOW PRESSURE TRAVELING ALONG IT. THE LOW WILL PASS BY ALONG THE NORTHERN BORDER OF KY TODAY. WITH THE COLD FRONT DROPPING SOUTH AND EXITING THE STATE EARLY THIS EVENING. OUR LOW LEVEL FLOW WILL SHIFT TO COME OUT OF THE NORTHEAST BEHIND THE COLD FRONT. THE UPPER LEVEL PATTERN WILL SHIFT FROM A ZONAL FLOW TO AN AMPLIFIED PATTERN AS A DEEP TROUGH SETS UP OVER THE EASTERN CONUS.
904 AM EST SUN FEB 21 2016 LOW PRESSURE WILL SPREAD RAIN SOUTH OF THE I 70 CORRIDOR TODAY. COOLER AIR WILL FILTER OVER THE REGION AS THE SYSTEM EXITS. COOLER AIR WILL SLOWLY MOVE SOUTHWARD OVER THE REGION AS THAT SYSTEM EXITS THIS AFTN.
AROUND 10 DEGREES WARMER THAN THE AVERAGE HIGH TEMPERATURE FOR LATE FEBRUARY. BUT COOLER CONTITIONS. A COLD FRONT WILL MOVE ACROSS THE MIDSOUTH HELPING TO FOCUS LIFT. THE AIRMASS BEHIND THE FRONT WILL ONLY BE SLIGHTLY COOLER. WITH THE HIGHEST CHANCE OF LIGHT RAIN IN NORTH MISSISSIPPI.
UPPER LEVEL TROUGH AND COLD FRONT MOVING QUICKLY INTO THE PACIFIC NORTHWEST THIS MORNING.
EARLY MORNING COASTAL TROUGH WILL BREAK DOWN DURING DAYTIME HEATING AND A LIGHT ONSHORE WIND WILL ENSUE. RIDGE AXIS OVER THE AREA TONIGHT WILL PROVIDE LIGHT WINDS AND THERE WILL BE LITTLE ONSHORE COMPONENT REMAINING SO DO NOT EXPECT MUCH STRATOCUMULUS.
A COLD FRONT CURRENTLY OVER NORTHWEST TENNESSEE WILL PUSH INTO NORTH ALABAMA LATER TONIGHT. RAIN WILL BECOME MORE WIDESPREAD AFTER 00Z AS A COLD FRONT APPROACHES THE AREA FROM THE NORTH. DUE NOT EXPECT MUCH IMPROVEMENT IN FLIGHT CATEGORY AFTER 12Z DUE TO PROXIMITY OF COLD FRONT. 58/ROSE RAIN CHANCES WILL INCREASE FROM NORTHWEST TO SOUTHEAST TODAY AS A COLD FRONT APPROACHES THE AREA.
AS A WEAK COLD FRONT AND UPPER LEVEL DISTURBANCE APPROACH. RETURNS ARE PRIMARILY DUE TO ISENTROPIC LIFT IN THE LOWER LEVELS OF THE ATMOSPHERE AND THUS.
1226 PM EST SUN FEB 21 2016 HIGH PRESSURE IS STILL HOLDING ON OVER THE REGION,. MOST OF THESE ARE LIKELY SPRINKLES, TO VERY LIGHT ACCUMULATIONS, AND SHOULD CONTINUE IN THIS MANNER THROUGH THE AFTERNOON AS HIGH PRESSURE BEGINS TO WEAKEN TODAY. /ISSUED 444 AM EST SUN FEB 21 2016/ HIGH PRESSURE REMAINS IN CONTROL THIS SUNDAY MORNING.
A COLD FRONT WILL REACH THE COAST EARLY ON MONDAY.
1104 AM CST SUN FEB 21 2016 A COLD FRONT CURRENTLY STRETCHES FROM PADUCAH KENTUCKY TO NEAR CORNING ARKANSAS. AROUND 10 DEGREES WARMER THAN THE AVERAGE HIGH TEMPERATURE FOR LATE FEBRUARY. BUT COOLER CONDITIONS. A COLD FRONT WILL MOVE ACROSS THE MIDSOUTH HELPING TO FOCUS LIFT. THE AIRMASS BEHIND THE FRONT WILL ONLY BE SLIGHTLY COOLER. WITH THE HIGHEST CHANCE OF LIGHT RAIN IN NORTH MISSISSIPPI.
Quiet and dry conditions are expected this morning as a weak short wave ridge axis transits the region. in the lower to mid 40s during the days and a bit below freezing at night.
A LOW PRESSURE SYSTEM WILL CLIP NORTHERN NEVADA SUNDAY NIGHT AND MONDAY BRINGING THE POSSIBILITY OF A FEW SHOWERS.
THE COLD FRONT WILL MOVE THROUGH THE TERMINALS LATE THIS EVENING INTO THE OVERNIGHT HOURS WITH WINDS SHIFTING TO THE NORTH.
619 AM EST SUN FEB 21 2016 HIGH PRESSURE OFF THE SOUTHEAST COAST WILL BE SUPPRESSED FARTHER SOUTHWARD AHEAD OF AN APPROACHING COLD FRONT. THE COLD FRONT WILL SLOWLY PUSH THROUGH THE FORECAST AREA MONDAY.
641 AM EST SUN FEB 21 2016 TEMPERATURES WILL BE COOLER TODAY.
334 AM CDT TUE APR 21 2015 QUIETER AND COOLER WEATHER IS ARRIVING INTO THE AREA. UPPER-LEVEL RIDGE WAS NOTED ACROSS CA. WITH TROUGH JUST OFF THE PACIFIC NORTHWEST COAST. WITH WARM AIR ADVECTION IN THE CENTRAL PLAINS AND RIDGING ACROSS THE WESTERN US. TEMPERATURES TONIGHT SHOULD FALL TO NEAR OR BELOW FREEZING IN MOST LOCATIONS TONIGHT. MOST IMPACTS OF THIS FREEZE WOULD BE TO A FEW EARLY- GROWTH PERENNIALS AND EARLY PLANTINGS IN HOME GARDENS COMPLETED DURING THE WARMER TEMPERATURES LAST WEEK. BUT WEDNESDAY NIGHT TEMPERATURES SHOULD STAY SLIGHTLY WARMER THAN TONIGHT AS MID-LEVEL WARM/MOIST AIR ADVECTION COMMENCES.
406 AM CDT TUE APR 21 2015 UPPER LOW WAS PARKED NEAR THE ARROWHEAD OF MN EARLY THIS AM WITH CWA RESIDING IN COOL NORTHWEST FLOW. CLOSED LOW WILL MEANDER SLOWLY EASTWARD THROUGH THE GREAT LAKES NEXT 24 HOURS WITH CWA REMAINING IN COOL NORTHWEST FLOW. COULD ALSO SEE A FEW PM SHOWERS NEAR/NORTH OF HWY 20 CORRIDOR WITH SPOKE OF ENERGY SHEARING ON BACKSIDE OF UPPER LOW.
130 AM EDT TUE APR 21 2015 STRONG LOW PRESSURE OVER THE NORTHERN GREAT LAKES WILL LIFT NORTHWARD INTO CANADA OVERNIGHT AND TO JAMES BAY ON TUESDAY. PERIOD WILL FEATURE A STEADY FEED OF COOLER/DRIER AIR UNDER A CLOSED LOW THAT WILL MEANDER INTO THE NORTHERN GREAT LAKES.
A weak upper low off the coast of southern California will move east into the southern part of that state late today and tonight. A weak disturbance out ahead of this low may approach the Big Bend region by early Wednesday morning. Temperatures will be warmer, with highs this afternoon expected to be in the upper 70s to lower 80s, and lows tonight in the lower to mid 60s. Weak upper level ridging will track east into the Southern Plains, but it will not be strong enough to suppress convection.
Some of the cloudiness is remnants from yesterday afternoon and evening's convection, while the clouds moving up from central California are associated with the deformation zone to the north of the weak closed mid/upper level low moving toward SoCal.
328 AM EDT TUE APR 21 2015 LOW PRESSURE WILL DRIVE AN OCCLUDED FRONT ACROSS THE REGION TODAY PRECEDED BY LOCALLY HEAVY RAIN AND SCATTERED THUNDERSTORMS.
351 AM CDT TUE APR 21 2015 SEVERAL NUANCES WITH THE FORECAST TODAY WITH LARGE UPPER LOW ROTATING ACROSS SOUTHERN ONTARIO. TEMPERATURES WILL BE PROBLEMATIC AS WELL WITH 850MB TEMPS GENERALLY WARMER THAN YESTERDAY.