Aikyam-Lab/Synoptic-Bench huggingface dataset:
314 AM PDT THU APR 2 2015 BREEZY WESTERLY WINDS WILL CONTINUE EARLY THIS MORNING IN THE MOUNTAINS AND DESERTS AS A TROUGH MOVES ACROSS THE REGION.
LATEST WATER VAPOR IMAGERY SHOWS A CLOSED UPPER LOW CIRCULATING JUST OFFSHORE OF BRITISH COLUMBIA.
A BROAD, FLAT UPPER LEVEL RIDGE WILL MOVE OUT OF THE ROCKIES INTO THE CENTRAL CONUS TODAY AND TONIGHT. AT THE SURFACE, HIGH PRESSURE WAS CENTERED OVER CENTRAL KANSAS EARLY THIS MORNING. THIS FEATURE WILL MOVE EAST OF THE REGION THIS MORNING WITH THE UPPER LEVEL RIDGE WHILE AT THE SAME TIME, LOW PRESSURE WILL DEEPEN IN THE LEE OF THE ROCKIES UNDER THE WESTERLY FLOW ALOFT. STRONG SPRING SUNSHINE AND A GOOD AMOUNT OF MIXING OF THE LOWER ATMOSPHERE SHOULD HELP BOOST DAYTIME HIGH TEMPERATURES TO AROUND OR ABOVE THE WARMER MAV MOS GUIDANCE. WILL CONTINUE TRENDING TOWARD THE WARMER MAV GUIDANCE FOR OVERNIGHT LOWS TONIGHT GIVEN THE THE AMOUNT OF WINDS AND TURBULENT MIXING IN THE BOUNDARY LAYER.
TODAY WILL BE THE LAST DAY OF DRIER WEATHER BEFORE AN UNSEASONABLY COLD UPPER LEVEL TROUGH BRINGS PRECIPITATION, LOWER SNOW LEVELS, AND ISOLATED THUNDERSTORMS TO THE REGION STARTING TONIGHT.
938 AM EDT SAT APR 4 2015 GUSTY WINDS WILL DIMINISH TODAY BETWEEN HIGH PRESSURE OVER THE MID MISSISSIPPI VALLEY. HIGH PRESSURE WILL ARRIVE OVERHEAD LATE TONIGHT AND SHIFT OFFSHORE SUNDAY. GOING TO SEE WINDS FALL OFF FAST THIS EVENING AS THE HIGH BRINGS LIGHT/CALM WINDS AS IT MOVES OVERHEAD. HIGH PRESSURE EXITS EAST SUNDAY. TEMPERATURES WILL RECOVER FROM A CHILLY START DURING THE AFTERNOON WITH READINGS GENERALLY IN THE MID 60S EAST OF THE RIDGE. AS THE UPPER FLOW TRANSITIONS TO FLAT RIDGING WE WILL GET INTO WARM AND MOIST SOUTHWESTERLY FLOW AND UNSETTLED WEATHER TO START THE WEEK.
JUST A FEW SC AROUND EARLY THIS MORNING WITH BASES ABOUT 4-5 THOUSAND FEET AND THESE SHOULD BE DISSIPATING BY AROUND 14-15Z AS DRIER AIR BUILDS IN BEHIND DEPARTED COLD FRONT.
A RIDGE WILL BE OVER THE ROCKIES TODAY AND SHIFT EAST INTO THE PLAINS SUNDAY.
/ISSUED 425 AM CDT SAT APR 4 2015/ SURFACE RIDGING CENTERED OVER NW OKLAHOMA CONTINUES TO FEED DRIER DEWPOINTS INTO THE REGION EARLY THIS MORNING ON LIGHT NE WINDS. THIS DRY AIR WILL BE SENT PACKING NORTH BY TONIGHT AS AN AGGRESSIVE PUSH OF RETURN FLOW ENSUES BEHIND THE HIGH.
A COLD FRONT LIES ACROSS THE WESTERNMOST THIRD OF OUR CWA ROUGHLY FROM MACON, GA TO PENSACOLA, FL. WITH ZONAL FLOW ALOFT AND AN UPPER LEVEL TROUGH FAR TO OUR NORTH, THERE IS LITTLE UPPER LEVEL SUPPORT FOR THESE STORMS, ALTHOUGH WITH DAYTIME HEATING, WE MAY SEE A FEW ISOLATED THUNDERSTORMS IN THE AFTERNOON. HIGHS TODAY WILL BE IN THE 70S, THOUGH WITH THE COLD FRONT PASSAGE, WESTERN ZONES MAY REACH THEIR PEAK PRETTY EARLY IN THE DAY.
A WEAKENED WESTERN ATLANTIC RIDGE AXIS EXTENDS ACROSS THE FLORIDA PENINSULA. THE RIDGE AXIS WILL FRACTURE INTO A NODE FAVORED ACROSS THE EASTERN GULF OF MEXICO. A RIDGE EXTENDING ACROSS CENTRAL FLORIDA AND THE ADJACENT ATLANTIC AND GULF WATERS WILL SPLIT AND WEAKEN THIS AFTERNOON. A SECOND HIGH PRESSURE SYSTEM WILL MIGRATE SWIFTLY EASTWARD INTO THE SOUTHEAST UNITED STATES TONIGHT.
739 AM EDT SAT APR 4 2015 THE COLD FRONT WHICH PRODUCED THE HEAVY RAINS OVER THE LAST 24 HOURS HAS NOW EXITED EAST OF THE STATE. A STRONG SURGE OF DRIER AND COOLER AIR IS MOVING INTO THE REGION UNDER NW FLOW. THIS CLEARING WILL CONTINUE TO MAKE ITS WAY EASTWARD AS WE HEAD INTO THE MORNING HOURS AND THE CENTER OF HIGH PRESSURE EDGES EASTWARD ACROSS THE STATE. EXPECT TEMPERATURES TO BE A BIT COOLER DURING THE DAY UNDER THIS NW FLOW. THE HIGH PRESSURE WILL BE POSITIONED OVER EASTERN KY. TEMPERATURES WILL DROP TO AROUND FREEZING IN MANY LOCATIONS. AS THE HIGH SHIFTS TO THE EAST. A LOW PRESSURE SYSTEM BREWING SEVERAL STATES TO THE WEST ON SUNDAY AFTERNOON WILL START ITS TREK EASTWARD TOWARDS THE MISSISSIPPI RIVER VALLEY.
WINDS SHOULD BECOME LIGHTER THROUGH THE DAY AS HIGH PRESSURE BUILDS IN FROM THE WEST.
602 AM CDT SAT APR 4 2015 HIGH PRESSURE WILL BUILD INTO THE REGION WITH WINDS SHIFTING FROM NORTHERLY TO SOUTHEASTERLY THROUGH THE TAF PERIOD.
1205 PM EDT SAT APR 4 2015 HIGH PRESSURE BUILDS ACROSS THE REGION FOR THE WEEKEND. EXPECTING DRY CONDITIONS NOW FOR THE REMAINDER OF THE DAY AS HIGH PRESSURE BUILDS IN. HIGH PRES MOVG OFF THE CST WL ALLOW FOR RETURN FLOW/A WARMER DAY.
MEANWHILE, THE LINGERING PRESSURE GRADIENT, THAT EXISTS BETWEEN THE OUTGOING COLD FRONT (CURRENTLY OVER SOUTHEAST GA/CENTRAL SC/N FL), AND THE HIGH PRESSURE SYSTEM HAS BROUGHT SUSTAINED N TO NE WINDS OF 10-15 MPH GUSTS UP TO 20 MPH. ONLY TREND TWEAKS WERE NECESSARY FOR THE TEMPERATURE AND DEWPOINT FORECAST WITH DAYTIME HIGHS EXPECTED TO BE IN THE LOW 60S AND DEWPOINTS LIKELY DROPPING FURTHER INTO THE 30S.
623 AM CDT Sat Apr 4 2015 The latest surface map has high pressure centered over southern Kansas and is expected to drift into southern Missouri by later this afternoon bringing quiet weather to the region. After a rather frosty start to the day with early morning lows as cold as the middle 20s in our northwest to the lower 30s southeast, we look for temps to recover nicely this afternoon with forecast soundings indicating lower 60s across the west with upper 50s far east.
A BROAD LOW PRESSURE TROUGH IS DEVELOPING OVER THE EASTERN PACIFIC FOR THE UPCOMING WEEK.
1216 PM EDT SAT APR 4 2015 LARGE AREA OF HIGH PRESSURE WILL MOVE ACROSS THE OHIO VALLEY TODAY THEN MOVE OFF THE SOUTHEAST COAST ON SUNDAY. THIS WILL ALLOW A BACKDOOR COLD FRONT TO MOVE OVER EASTERN LAKE ERIE SUNDAY.
MORNING LINE OF NORTHERN PRECIPITATION FOCUSING ON THE MID-LEVEL COLD FRONTAL BOUNDARY. ESPECIALLY IN THE VICINITY OF WHAT MAY BECOME THE INLAND MOVEMENT OF LATE SATURDAY INTO EARLY SUNDAY WARM FRONT. HIGHER CHANCES OF MORE WIDESPREAD LIGHT PRECIPITATION WILL OCCUR SUNDAY MORNING SOUTH OF THE WARM FRONT THAT WILL ADVANCE INLAND THROUGH THE FIRST HALF OF THE DAY. /ISSUED 456 AM CDT SAT APR 4 2015/ COLD FRONT HAS MOVED OFF THE COAST.
1000 AM CDT SAT APR 4 2015 COLD FRONT NOW WELL SOUTH OF THE COASTAL WATERS THIS MORNING. THIS IS EXPECTED TO BE BRIEF AND GRADUALLY DIMINISH DURING THE AFTERNOON HOURS AS THE PRESSURE GRADIENT RELAXES WITH THE APPROACHING CENTER OF HIGH PRESSURE. ALONG WITH INCREASING RAIN CHANCES AFTER MIDNIGHT AND ON INTO SUNDAY AS THE COLD FRONT LIFTS BACK NORTH THROUGH THE AREA. AS SFC TO MID LEVEL HIGH PRESSURE REMAINS ANCHORED TO THE EAST AND THE REGION REMAINING UNDERNEATH RELATIVELY FLAT WESTERLY FLOW ALOFT. 13 A COLD FRONT ACCOMPANIED BY SCATTERED SHOWERS WILL CONTINUE TO PUSH THROUGH THE COASTAL WATERS THIS MORNING. SHIFTING MORE EAST THEN SOUTHEAST AS HIGH PRESSURE MOVES OVER THE SOUTHEASTERN STATES.
AND KEPT THEM A LITTLE WARMER OVERNIGHT IN/NEAR THE FOOTHILLS. THIS WILL ALLOW FOR HIGHS TOO RISE INTO THE LOWER TO MID 60S ACROSS NERN CO. FLAT RIDGE ALOFT OVER COLORADO WITH A DRY W-SW FLOW ALOFT.
851 AM EDT SAT APR 4 2015 LARGE AREA OF HIGH PRESSURE WILL MOVE ACROSS THE OHIO VALLEY TODAY THEN MOVE OFF THE SOUTHEAST COAST ON SUNDAY. THIS WILL ALLOW A BACKDOOR COLD FRONT TO MOVE OVER EASTERN LAKE ERIE SUNDAY.
748 AM EDT SAT APR 4 2015 VFR CONDITIONS UNDER HIGH PRESSURE THROUGH THE TAF PERIOD. THE MID/UPPER LEVEL PATTERN THIS MORNING CONSISTED OF A RIDGE CENTERED OVER MEXICO STRETCHING EAST AND NORTHEAST ACROSS THE GULF AND FLORIDA. AN AREA OF LOW PRESSURE WAS STRENGTHENING ACROSS THE NORTHEAST. WITH A TRAILING COLD FRONT ACROSS THE SOUTHEAST STATES. HIGH PRESSURE OVER THE WESTERN ATLANTIC WAS WEAKENING AND SHIFTING EAST IN RESPONSE TO THE AREA OF LOW PRESSURE. THE RIDGE AXIS REMAINED ACROSS CENTRAL FLORIDA. THE COLD FRONT WILL PUSH INTO NORTHERN FLORIDA TODAY. AND WINDS WILL RELAX AS HIGH PRESSURE BREAKS DOWN AHEAD OF THE FRONT. THE PRESSURE GRADIENT WILL INCREASE AS HIGH PRESSURE BUILDS BACK OVER THE WESTERN ATLANTIC.
/ISSUED 446 AM CDT Sat Apr 4 2015/ Temperatures this morning are much cooler behind the front with broken mid to high clouds over the area. High winds continue through Guadalupe Pass so the High Wind Warning for that area is allowed to continue. Temperatures today are expected to be well below normal with many places experiencing highs in the lower 60s.
919 AM EDT SAT APR 4 2015 COOLER TODAY AND TONIGHT WITH HIGH PRESSURE BUILDING IN. COLD FRONT HAS PUSHED E OUT OF THE CWA AS OF 06Z. THINK THERE WILL BE A GOOD RIDGE VALLEY SPLIT AS THE HILLS HOLD ON TO SOME PUFF UNTIL VERY LATE. THINK OUTLYING AREAS GET BELOW FREEZING IN THE LOWLANDS. A HIGH PRESSURE SYSTEM WILL PROVIDE DRY WEATHER FOR EASTER. AS THE HIGH SLIDES EASTWARD. A SOUTHERLY WIND FLOW BRINGS MOISTURE AND WARMER AIR NORTHWARD FOR THE BEGINNING OF THE WORK WEEK. VFR CONDITIONS TONIGHT WITH RIDGE/VALLEY SPLIT ON THE SURFACE WINDS.
739 AM EDT SAT APR 4 2015 LARGE AREA OF HIGH PRESSURE WILL MOVE ACROSS THE OHIO VALLEY TODAY THEN MOVE OFF THE SOUTHEAST COAST ON SUNDAY. THIS WILL ALLOW A BACKDOOR COLD FRONT TO MOVE OVER EASTERN LAKE ERIE SUNDAY.
1007 AM EDT SAT APR 4 2015 HIGH PRESSURE BUILDS ACROSS THE REGION FOR THE WEEKEND. COLD FRONT OFFSHORE THIS MORNING WITH MID LVL TROUGH PIVOTING THROUGH THE NORTHEAST. MAINLY FOR THE HIGHER ELEVATIONS. TDA WL BE COOLER W/ HIGHS IN THE 50S. HIGH PRES MOVG OFF THE CST WL ALLOW FOR RETURN FLOW/A WARMER DAY.
A SHALLOW COLD FRONT WILL MOVE INTO NORTHERN UTAH ON SUNDAY.
THIS HIGH PRESSURE WILL ALSO FACILITATE COLDER TEMPERATURES TONIGHT AS WINDS GO CALM AND SKIES REMAIN CLEAR. FROST IN THE WEST AND TEMPERATURES AOB FREEZING IN THE EAST WILL BE PREVALENT TONIGHT SO DON'T FORGET TO PROTECT SENSITIVE VEGETATION BEFORE THE SUN SETS THIS EVENING.
ISOLATED TO SCATTERED LIGHT SHOWERS ARE FORECAST FOR THE LOWER ELEVATIONS WITH NUMEROUS SHOWERS IN THE MTNS FOR THE REMAINDER OF THE MORNING AND THIS AFTERNOON. A WEAK FRONT /WHICH IS NEARLY STATIONARY/ AHEAD OF A PARENT UPPER LOW OFF THE COAST WILL BE THE FOCUS FOR LIGHT SHOWERS TODAY. THE AIR MASS IS DRY IN THE LOWER LEVELS BUT WILL MOISTEN UP THROUGH THE AFTERNOON. A WARM FRONT WILL LIFT NORTHWARD THROUGH THE REGION WHICH WILL BE THE PRIMARY FOCUS FOR SHOWERS. CONTINUING GOOD AGREEMENT THAT UPPER LEVEL FLOW WILL AMPLIFY AND LEAD TO A BROAD COOL TROUGH AFFECTING THE AREA SUNDAY NIGHT THROUGH MID-WEEK.
COLD FRONT WELL OFF THE COAST WITH HIGH PRESSURE OVER THE MIDWEST. OVERALL DO NOT THINK THERE WILL BE MUCH PRECIP BUT COULD SEE SOME SHOWERS DEVELOP AS SHORT WAVE TROUGH APPROACHES FROM THE WEST THIS EVENING. MORNING LINE OF NORTHERN PRECIPITATION FOCUSING ON THE MID-LEVEL COLD FRONTAL BOUNDARY. ESPECIALLY IN THE VICINITY OF WHAT MAY BECOME THE INLAND MOVEMENT OF LATE SATURDAY INTO EARLY SUNDAY WARM FRONT. HIGHER CHANCES OF MORE WIDESPREAD LIGHT PRECIPITATION WILL OCCUR SUNDAY MORNING SOUTH OF THE WARM FRONT THAT WILL ADVANCE INLAND THROUGH THE FIRST HALF OF THE DAY. /ISSUED 456 AM CDT SAT APR 4 2015/ COLD FRONT HAS MOVED OFF THE COAST.
14Z SURFACE ANALYSIS PLACES YESTERDAY/S COLD FRONT IN THE NORTHERN GULF OF MEXICO AS A 1031 MB RIDGE OF HIGH PRESSURE IS CENTERED OVER OKLAHOMA THIS MORNING. HIGH PRESSURE BUILDING INTO THE REGION THIS MORNING AND SKIES HAVE CLEARED OUT FOR THE MOST PART. A COOL BUT PLEASANT DAY ON TAP WITH A NORTH BREEZE AND HIGHS IN THE LOWER TO MID 60S. HIGH PRESSURE WILL PREVAIL OVERNIGHT WITH CLEAR SKIES AND LIGHT WINDS.
535 AM MDT SAT APR 4 2015 A RIDGE WILL BE OVER THE ROCKIES TODAY AND SHIFT EAST INTO THE PLAINS SUNDAY.
935 AM EDT SAT APR 4 2015 THE COLD FRONT IS CONTINUING TO MOVE ACROSS CENTRAL GEORGIA WITH JUST A FEW OF OUR SOUTHEAST COUNTIES LEFT TO MOVE THROUGH. HOWEVER THERE COULD BE A FEW READINGS OF FREEZING TEMPERATURES IN THE NORTHEAST MOUNTAINS.
SURFACE ANALYSIS THIS MORNING SHOWS THE HIGH PRESSURE RIDGE AXIS GRADUALLY SHIFTING SOUTH THROUGH PENINSULA AS A WEAK FRONTAL BOUNDARY TRACKS ACROSS THE WESTERN PANHANDLE. WITH THE RIDGE DIPPING SOUTH WESTERLY FLOW HAS DEVELOPED ACROSS THE NORTHERN ZONES AND WILL SPREAD SOUTH THROUGH THE DAY. HIGH PRESSURE OVER THE AREA CONTINUES TO PRODUCE PLEASANT WEATHER CONDITIONS. A COLD FRONT MOVES THROUGH THE AREA LATE SATURDAY THROUGH EARLY SUNDAY MORNING PRODUCING A SLIGHT CHANCE OF RAIN OVER THE NORTHERN COASTAL WATERS. WINDS WILL INCREASE TO SMALL CRAFT EXERCISE CAUTION ON SUNDAY MORNING AS THE GRADIENT TIGHTENS BETWEEN THIS FRONT AND HIGH PRESSURE TO THE NORTH.
COLD FRONT CROSSES OUR REGION THIS AFTERNOON WITH MAINLY. BREEZY AND COOLER WEATHER EXPECTED TONIGHT AND SUNDAY. COLD FRONT HAS REACHED JUST NORTHWEST OF SOUTHEAST GEORGIA STRETCHING FROM PENSACOLA TO MACON AND INTO THE CAROLINAS. TEMPS SHOULD REACH INTO THE 70S AHEAD OF THE FRONT ACROSS SE GA AND INTO THE LOWER TO MIDDLE 80S ACROSS NE FL.
1142 AM EDT SAT APR 4 2015 HIGH PRESSURE WILL MOVE ACROSS THE REGION TODAY AND CONTINUE TO EXTEND INTO THE AREA ON SUNDAY.
642 AM CDT SAT APR 4 2015 /12Z TAFS/ A SURFACE LEE SIDE TROUGH AND RESULTANT TIGHTENING SURFACE PRESSURE GRADIENT WILL LEAD TO THE DEVELOPMENT OF BREEZY SOUTHWEST WINDS THROUGHOUT MUCH OF THE VALID TAF FORECAST PERIOD. A LEE-SIDE TROUGH DEVELOPS ON SUNDAY TO KEEP WINDS FROM THE SW AT 15 TO 25 MPH.
1022 AM EDT SAT APR 4 2015 HIGH PRESSURE BUILDING IN WILL RESULT IN MAINLY DRY CONDITIONS AND A WARMING TREND IN TEMPERATURES THROUGH THE WEEKEND. CLOUD COVERAGE WILL CONTINUE TO DIMINISH OVER THE COURSE OF THE DAY WITH BUILDING HIGH PRESSURE. AS THE HIGH EXITS. A SURFACE BOUNDARY IS PROGGED TO SET UP FROM THE PLAINS INTO THE LOWER GREAT LAKES. MVFR TO IFR CIGS THROUGH THE EARLY MORNING AS COLD ADVECTION BEHIND DEPARTING LOW PRESSURE DOMINATES.
141 PM EST SAT FEB 21 2015 A WARM FRONT HAS LIFTED NORTH OF THE FORECAST AREA AHEAD OF A COLD FRONT APPROACHING FROM THE NORTHWEST. THE COLD FRONT WILL MOVE INTO THE FORECAST AREA SUNDAY AND PUSH SOUTH OF THE AREA SUNDAY NIGHT. MOISTURE WILL INCREASE ACROSS THE AREA TONIGHT WITH WEAK ISENTROPIC LIFT AHEAD OF THE APPROACHING COLD FRONT. USED THE WARMER TEMPERATURE GUIDANCE. CONVERGENCE AHEAD OF THE COLD FRONT SUPPORTS AREAS OF RAIN SUNDAY BUT COVERAGE MAY BE LIMITED BECAUSE OF THE WESTERLY COMPONENT TO THE H85 FLOW. WE FORECASTED THE HIGHER CHANCE EARLY.
The exception for these counties will be the high elevation valleys, such as Pierce, Elk city and Dixie, which will also have temperatures in the single digits to below zero range.
209 PM EST SAT FEB 21 2015 SOUTH TO SOUTHEAST FLOW AROUND WESTERN ATLANTIC HIGH PRESSURE BRINGING WARMER CONDITIONS AND HIGHER DEWPOINTS TO THE AREA.
104 PM EST SAT FEB 21 2015 A WARM FRONT HAS LIFTED NORTH OF THE FORECAST AREA AHEAD OF A COLD FRONT APPROACHING FROM THE NORTHWEST. THE COLD FRONT WILL MOVE INTO THE FORECAST AREA SUNDAY AND PUSH SOUTH OF THE AREA SUNDAY NIGHT. MOISTURE WILL INCREASE ACROSS THE AREA TONIGHT WITH WEAK ISENTROPIC LIFT AHEAD OF AN APPROACHING COLD FRONT. CLOUD COVER WILL KEEP OVERNIGHT LOWS WARMER THAN THE PAST SEVERAL NIGHTS. RAIN WILL CONTINUE INTO SUNDAY ASSOCIATED WITH CONVERGENCE ALONG THE COLD FRONT. ALTHOUGH THE SURFACE MAY REMAIN DECOUPLED IF THE WEAK WARM FRONT LINGERS IN THE AREA.
The higher additional amounts will remain over southwest Montana, so will leave the Advisory for above 5500 feet in place through this afternoon. Temperatures are currently running a few degrees warmer there than the model trend. I kept highs there only in the lower to mid 20s because the colder airmass will continue to build into the area from the north. As high pressure builds into the area by this evening, some clearing is expected but low clouds and fog may develop after 04z.
AN UPPER TROUGH WILL APPROACH THE PANHANDLES TONIGHT BRINGING SNOW TO ALL THREE TAF SITES AFTER 08Z TO 11Z SUNDAY WHICH WILL CONTINUE UNTIL AT LEAST 18Z SUNDAY. A COLD FRONT WILL MOVE THROUGH THE TAF SITES THIS EVENING. BEHIND THE FIRST COLD FRONT WHICH PASSED THROUGH OVERNIGHT. A COMPARATIVELY STRONGER COLD FRONT WILL BRING AN ARCTIC AIR MASS INTO THE REGION TONIGHT WITH TEMPERATURES STEADY OR FALLING THROUGH THE DAY TOMORROW. PRECIPITATION INITIALLY THROUGH ABOUT MID EVENING MAY BE RAIN GIVEN SUFFICIENTLY DEEP ABOVE FREEZING WET BULB TEMPERATURE LAYER WITH A TRANSITION TO ALL SNOW BY LATE EVENING AND THROUGH THE OVERNIGHT.
THE 925MB COLD FRONT LAGS BEHIND IN WEST CENTRAL WI AS OF 10 AM. WINDS SHIFTED TO THE NORTH-NORTHWEST THIS MORNING WITH A WEAK SURFACE COLD FRONT. A COLD FRONT WILL SLIDE THROUGH THE AREA THIS MORNING.
Freezing rain and sleet were exiting the eastern Ozarks, which will conclude this episode of winter weather. Freezing rain will linger farther south across far southern Missouri but may mix with sleet or snow as it ends. the freezing cold air held on longer than models anticipated. Temperatures will not change much through sunrise with most locations holding just at the freezing mark or just slightly below freezing. A storm system will be out to our west across the High Plains region into Texas on Sunday.
SOME OTHER CONCERNS HERE HAVE BEEN THE HEAVY RAINFALL AND THE WARMER TEMPS. THE WARMER TEMPS HAVE RESULTED IN SOME ICE TO BREAK UP IN THE RIVERS AND HAVE RESULTED IN SOME ICE JAMS ACROSS THE AREA AND LEADING TO SOME FLOODING OVER ROADWAYS.
A COLD FRONT WILL ENTER THE AREA FROM THE NORTHWEST BRINGING GUSTY NORTH WINDS. ANOTHER COLD FRONT WILL MOVE THROUGH THE AREA OVERNIGHT WITH GUSTY NORTH/NORTHEAST WINDS AND THE REDEVELOPMENT OF MVFR CIGS. THEN A SURGE OF COOLER AIR MOVES INTO THE AREA.
INCREASED POPS FROM MALHEUR COUNTY ACROSS THE LOWER TREASURE VALLEY TODAY. THE AREA OF SHOWERS ACROSS NE OREGON AND CENTRAL IDAHO IS ASSOCIATED WITH A COLD UPPER LEVEL TROUGH THAT WILL SHIFT ACROSS E OREGON AND SW IDAHO TODAY. SO ONLY MINOR UPDATES FOR TODAY TO INCREASE POPS FROM THE LOWER TREASURE VALLEY THROUGH MALHEUR COUNTY. AN UPPER TROUGH AND ACCOMPANYING COLD FRONT WILL PUSH THROUGH SOUTHEAST OREGON AND SOUTHWEST IDAHO THIS AFTERNOON AND EVENING. WILL SEE COOLER TEMPERATURES TODAY AND A RETURN OF GUSTY NORTHWEST WINDS. BACKDOOR COLD FRONT ARRIVES FROM THE EAST THIS EVENING. ACCOMPANYING WINDS AND SNOW WILL PUSH THROUGH THE SOUTHERN BOISE MTNS AND DOWN THE SNAKE RIVER PLAIN INTO THE LOWER TREASURE VALLEY EARLY SUNDAY MORNING BEFORE STALLING.
OTHER AREAS ACROSS NORTHEAST KANSAS AND MISSOURI HAVE NOT BEEN AS LUCKY WITH FREEZING RAIN THROUGH MUCH OF THE NIGHT. SOME TEMPERATURES ACROSS SOUTHEAST KANSAS ARE FLIRTING WITH THE FREEZING MARK AND ELEVATED SURFACES AND UNTREATED ROADWAYS MAY BE IMPACTED BRIEFLY BEFORE TEMPERATURES WARM EARLY THIS MORNING. SO ANY AREAS WITH FREEZING RAIN OR ICE OVER SOUTHEAST KANSAS SHOULD QUICKLY MELT.
1216 PM EST SAT FEB 21 2015 A FAST MOVING LOW PRESSURE SYSTEM WILL MOVE NORTHEAST ACROSS CENTRAL OHIO INTO WESTERN PENNSYLVANIA TODAY. AN ARCTIC COLD FRONT WILL SLIDE SOUTHEAST ACROSS THE AREA MID DAY ON SUNDAY.
THE LOW LEVEL JET HAS REALLY KICKED IN ACROSS CENTRAL ALABAMA THIS AFTERNOON WITH PREVAILING SOUTHERLY WINDS OF 15 TO 20 KNOTS WITH GUSTS CLOSE TO 30 KNOTS AT TIMES. WINDS WILL DIMINISH SOMEWHAT OVERNIGHT TONIGHT WITH RAIN AND IFR CIGS MOVING IN AHEAD OF A COLD FRONT.
/ISSUED 541 AM CST Sat Feb 21 2015/ /12Z TAFS/ Look for MVFR ceilings this morning to clear, from north to south, as a cold front moves south across West Central Texas today. /ISSUED 332 AM CST Sat Feb 21 2015/ (Today and tonight) A cold front will push south across West Central Texas today and bring cooler temperatures. Highs today will track the front, with cooler numbers over the Big County.
1135 AM EST SAT FEB 21 2015 A LOW PRESSURE SYSTEM WILL MOVE THROUGH THE OHIO VALLEY TODAY BRINGING WIDESPREAD SNOW TO THE REGION. A COLD FRONT WILL PUSH THROUGH THE REGION THIS EVENING. WINDS STILL HAVE A SE COMPONENT TO THEM ACROSS THE NORTHERN PORTIONS OF THE FA THEREFORE THESE LOCATIONS ARE STILL IN THE LOW TO MID 20S. FREEZING DRIZZLE. A COLD FRONT WILL PUSH EAST ACROSS THE AREA THIS EVENING.
WINDS ARE EXPECTED TO DIMINISH THIS AFTERNOON AS THE LOW LEVEL JET MOVES EAST.
THE APPROACHING COLD FRONTAL BOUNDARY IS NOW BETWEEN THE I-35 AND I-45 INTERSTATES. STICKING IN THE LOWER 50S UP NORTH. AS THE MID-LEVEL FLOW BECOMES MORE PARALLEL WITH THE LOWER LEVEL FRONT. LARGE SURFACE RIDGING ADVANCING OUT OF CENTRAL CANADA INTO THE NORTHERN PLAINS LATE TOMORROW.
STILL HAVE NOT BEEN ABLE TO BREAK THE FREEZING MARK OVER PORTIONS OF SE MO/SRN IL AND SW IN. WITH WARM FRONT EXPECTED TO SET UP SHOP SOMEWHERE NEAR THE OH RIVER THIS AM. PORTIONS OF OUR NORTH/WEST MAY STRUGGLE TO MAKE IT MUCH ABOVE FREEZING THROUGH NOON. LAYER OF FREEZING RAIN OVERNIGHT HAS CREATED 100 PERCENT RUN OFF CONDITIONS AND SNOW/ICE IS NOT ALLOWING SOME STREETS TO DRAIN PROPERLY. COULD ALSO BE SOME HEAVY FREEZING RAIN EARLY TODAY OVER THE OZARK FOOTHILLS OF SE MO. A COLD FRONT DRIVEN BY A SOUTHERN ONTARIO LOW PRESSURE SYSTEM IS FORECAST TO SWEEP THROUGH THE PAH FORECAST AREA.
203 PM EST SAT FEB 21 2015 LOW PRESSURE WILL CONTINUE TO SPREAD SNOW OVER THE UPPER OHIO VALLEY REGION INTO THIS EVENING. THE RESULTING LATE AFTERNOON ADDITIONS SHOULD BE SUFFICIENT TO TOTAL NEAR THE LOW END WARNING CRITERIA FOR THE DAY OVER MANY AREAS. INTENSIFYING THE POTENTIAL FOR FREEZING DRIZZLE.
326 PM CST SAT FEB 21 2015 A SPRAWLING H5 TROF ENCOMPASSED MUCH OF THE U. WITH THE CENTER OF THE CLOSED LOW OVER HUDSON BAY.
THE UPPER TROF SAGGING INTO NRN UT THIS MORNING BROUGHT THE UPPER COLD POOL SOUTH INTO THE CWA WITH INSTABILITY SHOWERS SCATTERED ACROSS THE NORTH. EXPECT THIS TO PERSIST INTO TONIGHT AS AN UPSTREAM SHORT WAVE DIVING THRU THE PACNW THIS MORNING CARVES THE TROF WWD INTO THE GREAT BASIN. MOST OF THIS SHOULD FALL AS SNOW EXCEPT ACROSS THE LOWER ELEVATIONS OF THE FAR SOUTH. THE CANYON WINDS END MON MORNING AND THE SNOW ACROSS THE SOUTH ENDS TUE MORNING AS THE UPPER LOW THAT FORMS OVER NV ON SUN SLIDES EAST. SHORT WAVE RIDGING BRIEFLY CROSSES THE CWA TUE AFTN/NIGHT BEFORE ANOTHER TROF DROPS OUT OF THE NORTH FOR WED/WED NIGHT.
328 PM EST SAT FEB 21 2015 LOW PRESSURE WILL BRING SNOW TO THE AREA TONIGHT. A COLD FRONT WILL MOVE THROUGH SUNDAY WITH COLD AIR FOR THE START OF THE WEEK.
EXTENDED THE HIGH RISK OF RIP CURRENTS FOR GULF FACING BEACHES UNTIL MIDNIGHT. AREAS OF FOG ARE EXPECTED TO FORM OVER THE NEARSHORE WATERS AND BAYS THIS EVENING AS WARM MOIST AIR MOVES ACROSS THESE COOLER WATERS. THE COLD FRONT WILL MOVE INTO THE COASTAL WATERS EARLY SUNDAY EVENING WITH STRONG SCA CONDITIONS OCCURING THROUGH THE REST OF THE NIGHT.
THIS UPPER LEVEL DISTURBANCE WAS RESPONSIBLE FOR PUSHING THE COLD FRONT THROUGH THE CWA LATE THIS MORNING INTO THIS AFTERNOON. WITH AREAS SW OF AN ELWOOD TO OSBORNE HAVING THE HIGHEST TOTALS. HIGH PRESSURE WILL CONTINUE TO GRADUALLY BUILD FURTHER SOUTH. EVEN BY THE END OF DAYTIME HOURS TOMORROW THE CENTER OF THE HIGH IS STILL OVER THE DAKOTAS.
Northeasterly winds will become southeasterly by late this afternoon, ahead of a cold front that will push south across the region overnight tonight and Sunday morning. A cold front will move through the Permian Basin this morning then hang up around the Pecos River. Meanwhile, the aforementioned trough will approach the Four Corners region, backing flow aloft to the SW.
1253 PM EST SAT FEB 21 2015 LOW PRESSURE SYSTEM BRINGS WINTRY MIX TONIGHT THROUGH SATURDAY NIGHT. EVEN AS TEMPS ARE ABOVE FREEZING. FREEZING RAIN RULES THE ROOST IN THE SOUTH. THE EXCEPTION BEING SE OH AND THE EASTERN MOUNTAINS OF NE WV WHERE SUB FREEZING TEMPS REMAIN AT ALL LEVELS. A BRIEF PERIOD OF UPSLOPE ENDS THE LOW PRESSURE SYSTEM EVENT FOR THE CENTRAL APPALACHIANS SUNDAY WITH THE LAST OF THE FLAKES FALLING EARLY SUNDAY NIGHT. HIGH PRESSURE BRINGS A DRY PERIOD THROUGH THE REMAINDER OF THE SHORT TERM.
WITH LOW AMPLITUDE TROUGHING CONTINUES ACROSS THE NORTHERN HALF OF THE CONUS. AT THE SURFACE AND IN THE LOWER LEVELS. THE 1037 MB CENTER OF A VERY COLD ANTICYCLONE IS NEAR 40 NORTH 65 WEST. SOUTH FLORIDA AND THE FLORIDA KEYS REMAIN BENEATH THE FAR SOUTHWESTERN PERIPHERY OF THIS RIDGE. TEMPERATURES HAVE MODERATED INTO THE MIDDLE 70S WITH DEWPOINTS INTO THE LOWER 60S ACROSS THE ISLAND CHAIN. AS THE STRONG ARCTIC RIDGE OVER THE NORTHWESTERN ATLANTIC SLIDES EASTWARD. WITH WEAK RIDGING LOCATED OVER THE ATLANTIC AND EASTERN GULF COAST.
229 PM CST Sat Feb 21 2015 20Z water vapor shows a broad and deep upper trough centered over the Hudson bay and encompassing much of North America. At the surface, observations show another 1044 MB ridge of high pressure over Alberta poised to move south into the plains. However it appears as though the models fail to generate much QPF due to dry air in the lower atmosphere. Have kept the forecast dry across northeast KS where the low level dry air is progged to be deeper.