Aikyam-Lab/Synoptic-Bench huggingface dataset:
CHATTANOOGA AIRPORT, TN 47 30 55 33 / 0 0 10 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 44 26 54 32 / 0 0 10 30 OAK RIDGE, TN 45 28 53 31 / 0 0 10 30 TRI CITIES AIRPORT, TN 42 22 51 27 / 0 0 10 30.
SKIES ARE MOSTLY SUNNY WITH TEMPERATURES RANGING FROM 60 DEGREES IN THE UPPER KEYS TO THE MID 60S IN THE LOWER KEYS. AN EXPANSIVE AREA OF HIGH PRESSURE IS CENTERED OVER THE GEORGIA BULLDOG STATE. WITH A RIDGE NOSING DOWN THE SPINE OF THE SUNSHINE STATE. EAST-WEST ORIENTED DEEP LAYERED RIDGING ALIGNED ACROSS THE ARCHIPELAGO OF CUBA WILL LIFT NORTHWARD OVER THE NEXT 12 TO 24 HOURS. WITH HIGH PRESSURE CENTERED IN THE SOUTHEAST UNITED STATES SLIDING SWIFTLY EASTWARD. COOL TEMPERATURES EARLY THIS MORNING WILL MODERATE QUICKLY INTO THE LOWER TO MID 70S. DUE TO HIGH PRESSURE LOCATED OVER THE SOUTHEAST UNITED STATES AND DAYTIME HEATING OVER SOUTH FLORIDA.
Upper ridge amplifies across the region today and Wednesday as the upstream trough develops off the west coast. This will lift the warm front that's been draped across the far northern portion of the state further to the north ending the threat of showers for the northern Sacramento Valley and northern mountains. A disturbance moving over a flattened ridge may bring an increase in showers to areas north of Red Bluff late tonight and Tuesday morning. The ridge starts to amplify and push any activity north of Shasta County by the evening. A ridge will remain over the area on Wednesday to keep the area dry and warm with some patchy night and morning fog for the valley.
850 AM EST TUE FEB 3 2015 TEMPERATURES HAVE RISEN ABOVE FREEZING. HIGH PRESSURE TO THE N/NW THIS MORNING WILL MOVE EAST TO THE MID ATLANTIC COAST THIS AFTERNOON.
948 AM EST TUE FEB 3 2015 HIGH PRESSURE OVER THE AREA TODAY WILL MOVE OFFSHORE WEDNESDAY. A COLD FRONT WILL MOVE THROUGH WEDNESDAY NIGHT.
A COLD FRONT WILL MOVE FROM NORTH TO SOUTH AND DANGEROUS WIND CHILLS MAY DEVELOP AT LEAST IN THE NORTH.
815 AM MST TUE FEB 3 2015 HIGH PRESSURE WILL SLOWLY BUILD INLAND ACROSS THE DESERT SOUTHWEST BRINGING DRY WEATHER AND A WARMING TREND.
615 AM EST TUE FEB 3 2015 HIGH PRESSURE WILL CONTINUE TO BUILD INTO THE AREA TODAY.
610 AM EST TUE FEB 3 2015 HIGH PRESSURE WILL CONTINUE TO BUILD INTO THE AREA TODAY.
419 AM CST Tue Feb 3 2015 Quiet and warmer weather is expected. A weak sfc wave of low pressure will develop along the front south of the area along with post sfc frontal forcing developing precip for the cwfa Wednesday afternoon, then quickly exiting it by late evening. Farther south over the lower half of the cwfa, there will be more of a transition from rain to snow later in the afternoon and early evening.
230 AM PST TUE FEB 3 2015 HIGH PRESSURE WILL DOMINATE THE WEATHER THROUGH THE WEEKEND WITH FAIR WEATHER AND WARM DAYS. HIGH PRESSURE ALOFT WILL PREVAIL FOR THE COMING WEEK.
1001 AM EST TUE FEB 3 2015 HIGH PRESSURE WILL MOVE EAST OF THE OHIO VALLEY TODAY AS LOW PRESSURE DEVELOPS OVER THE UPPER MIDWEST. THIS LOW WILL TRACK EAST THROUGH THE GREAT LAKES REGION TONIGHT AND DROP A COLD FRONT THROUGH THE OHIO VALLEY WEDNESDAY.
UPPER LOW EXPECTED TO TRACK SOUTH OF THE REGION WILL CONTINUE TO USHER IN ADDITIONAL CLOUD COVER BUT LOWER CIGS WILL LIKELY HOLD OFF UNTIL VERY NEAR THE END OF THIS TAF CYCLE OR SHORTLY THEREAFTER ACROSS OUR E TX TERMINALS. CLOUDS WILL BE INCREASING IN RESPONSE TO AN UPPER LOW MOVING INTO SOUTH TEXAS. MODELS BRING THE UPPER LOW FROM SOUTH TEXAS INTO EAST TEXAS BY WEDNESDAY.
525 AM CST TUE FEB 3 2015 WV IMAGERY THIS MORNING SHOWING UPPER LEVEL LOW AMPLITUDE RIDGE ALONG THE WEST COAST WITH DECENT MOISTURE STREAMING DOWN THRU THE PAC NW AND INTO THE NRN ROCKIES.
HIGH PRESSURE WILL SLOWLY BUILD INLAND ACROSS THE DESERT SOUTHWEST BRINGING DRY WEATHER AND A WARMING TREND.
HIGH PRESSURE ALOFT WILL RETURN TO UTAH LATE IN THE WEEK.
602 AM CST Tue Feb 3 2015 Quiet and warmer weather is expected. A weak sfc wave of low pressure will develop along the front south of the area along with post sfc frontal forcing developing precip for the cwfa Wednesday afternoon, then quickly exiting it by late evening. Farther south over the lower half of the cwfa, there will be more of a transition from rain to snow later in the afternoon and early evening.
638 AM EST TUE FEB 3 2015 A WEAK AREA OF HIGH PRESSURE WILL BRING PARTIAL SUNSHINE TO THE NORTH COUNTRY TODAY.
THE QUESTION THIS MORNING WILL BE WHETHER OR NOT WE'LL SEE ANY FREEZING FOG. ALL BELOW FREEZING. DUE TO THE SHARP NATURE OF THE TROUGH AXIS.
HIGH PRESSURE OVER THE DESERT SOUTHWEST WILL BRING DRY CONDITIONS.
Low level southerly flow ahead of this system will bring warmer temperatures than yesterday, with temperatures expected to reach the upper 20s to low 30s along the I-74 corridor ranging up to the low 40s south of I-70. Temperatures cool off again for Wednesday as daytime heating is limited due to another wave building precip into the region from the west along a cold front.
IT WILL CONTINUE TO BE RATHER MILD WITH RAIN AT THE LOWER PARTS OF BOGUS BASIN IN THE MID/LATE AFTERNOON.
942 AM EST TUE FEB 3 2015 HIGH PRESSURE WILL BUILD OVER THE REGION TODAY. A COLD FRONT MOVES THROUGH THE REGION WEDNESDAY NIGHT. HIGH PRESSURE BUILDS IN LATE IN THE WEEK.
927 AM EST TUE FEB 3 2015 A WEAK AREA OF HIGH PRESSURE WILL BRING PARTIAL SUNSHINE TO THE NORTH COUNTRY TODAY.
Looking across Canada, a trough is noted swinging through Alberta early this morning. As for timing, confidence on when snow will start and stop in our area isn't the highest it could be, but the general consensus of the models lends enough evidence to warrant bumping POPs into the categorical range for portions of the daylight hours Wednesday. Current accumulations generally range between 1 and 3 inches, with the highest amounts across far northern Missouri where the initial snow bands will likely set up in the morning allowing for range of 2 to 4 inches.
637 AM EST TUE FEB 3 2015 HIGH PRESSURE WILL MOVE EAST OF THE OHIO VALLEY TODAY AS LOW PRESSURE DEVELOPS OVER THE UPPER MIDWEST. THIS LOW WILL TRACK EAST THROUGH THE GREAT LAKES REGION TONIGHT AND DROP A COLD FRONT THROUGH THE OHIO VALLEY WEDNESDAY.
AN AREA OF LOW PRESSURE OFFSHORE WILL RIDE EAST-NORTHEASTWARD ALONG A STATIONARY BOUNDARY DRAPED OVER THE CWA THIS MORNING. WE'LL GET ABOUT A 24-HOUR BREAK FROM THE WET WEATHER LATER TONIGHT INTO WEDNESDAY AS A WARM FRONT LIFTS NORTH OF THE AREA AND SHORT WAVE RIDGING MOVES IN ALOFT. MEANWHILE, STRONG LOW PRESSURE WILL GATHER OFFSHORE AND A SERIES OF WET, WINDY FRONTAL SYSTEMS WITH AMPLE SUBTROPICAL MOISTURE WILL TAKE AIM AT THE AREA.
A LARGE RAIN SHIELD DEVELOPED ACROSS THE CWA EARLIER TONIGHT AND HELPED MOISTEN THE LOWER LEVELS OF THE ATMOSPHERE. AN ADDITIONAL PRECIP ENHANCEMENT MAY OCCUR ACROSS THE EASTERN HALF OF THE CWA AS COASTAL TROUGH DEEPENS AND INTERACTS FURTHER WITH APPROACHING LOW. HAVE MAINTAINED CHANCE POPS INTO THIS EVENING FOR THE EASTERN HALF OF THE CWA GIVEN LINGERING COASTAL TROUGH AND MID LEVEL LOW STILL JUST WEST OF THE CWA. ENTIRE MID/UPPER LEVEL TROUGH AXES SHIFT EAST ON WEDNESDAY WITH SOME CLEARING OCCURRING ACROSS THE REGION FROM WEST TO EAST. HAVE GONE SLIGHTLY COOLER FOR MIN TEMPS TONIGHT ACROSS THE FAR WESTERN BRUSH COUNTRY WHERE SOME CLEARING MAY OCCUR LATE IN THE NIGHT.
DEALING WITH A SYSTEM WITH ARCTIC HIGH PRESSURE QUICKLY FOLLOWING BEHIND WITH EXTREMELY DRY AIR SETTLING SOUTH. THE SFC COLD FRONT WILL HAVE ALREADY PASSED SOUTH OF THE STATE BY 06Z TONIGHT HOWEVER THE BOUNDARY WILL REMAIN RELATIVELY SHALLOW AT 3-4 KFT WITH THE FORCING OVERRIDING THE BOUNDARY. ARCTIC HIGH PRESSURE SETTLES IN FOR WEDNESDAY NIGHT WITH TEMPERATURES WELL BELOW ZERO FOR MOST LOCATIONS.
TEMPERATURES WILL CONTINUE TO TREND UPWARD OVER SOUTHWEST CALIFORNIA AS A RIDGE BUILDS ALONG THE COAST AND OFFSHORE WINDS DEVELOP.
1256 AM EST THU MAR 5 2015 LOW PRESSURE WILL BRING SNOW MAINLY SOUTH OF INTERSTATE 80 THROUGH EARLY THURSDAY. FOLLOWED BY BUILDING HIGH PRESSURE TO END THE WEEK. SNOW CONTINUES ACROSS THE REGION AS A SURFACE WAVE IN THE CAROLINAS MOVES ALONG A SLOWLY SOUTHWARD MOVING COLD FRONT. AND HIGH PRESSURE BUILDS IN LATE IN THE DAY.
340 AM CST THU MAR 5 2015 A SURGE OF WARMER AIR SHOULD MOVE OFF THE HIGH PLAINS THIS AFTN AND SWEEP EAST TO NEAR HIGHWAY 183 BY LATE AFTN. A BATCH OF MID AND HIGH LEVEL CLOUDS SHOULD MOVE ACROSS THE FCST AREA WITH SOME ADDITIONAL WARMING IN THE LOWER LEVELS AND AN INCREASE IN WIND SPEEDS BELOW 700 MB.
1234 AM EST THU MAR 5 2015 HIGH PRESSURE WILL GRADUALLY BUILD IN FROM THE WEST THROUGH THURSDAY.
MODELS SHOWING THE LEFT EXIT OF THE 500MB JET MOVE OVER THE NORTHERN HALF OF THE AREA TONIGHT BEHIND THE 500MB TROUGH AXIS. BY THURSDAY AFTERNOON THE COLD AREA OF HIGH PRESSURE AT THE SURFACE OVER THE CENTRAL HIGH PLAINS REGION MOVES INTO THE SOUTHERN AND EASTERN PLAINS WITH A LEE TROUGH DEEPENING ALONG THE FRONT RANGE. SURFACE WINDS TURN WESTERLY AND THE UPPER RIDGE OVER THE WESTERN UNITED STATES BEGINS TO EXPAND EASTWARD ACROSS THE ROCKIES AND OVER THE HIGH PLAINS. GFS A LITTLE MORE AGGRESSIVE THAN THE ECMWF ON THE NEXT TROUGH DROPPING INTO THE NORTHERN ROCKIES TOWARDS THE END OF THE PERIOD.
APPEARS TO HAVE A DECENT HANDLE ON THE CURRENT SPEED AND THE SOUTHWARD PROGRESSION OF FREEZING TEMPERATURES. WITH AREAS OF RAIN EXPECTED TO CONTINUE DEVELOPING/SPREADING OVER THE AREA DURING THIS ROUGHLY 6 HOUR PERIOD OF FREEZING SURFACE TEMPERATURES. A VERY STRONG AND RAPID SOUTHEAST MOVING COLD FRONT WILL ADVANCE ACROSS THE AREA. TEMPERATURES WILL KEEP DROPPING THROUGH THE LATE MORNING HOURS WITH FREEZING PRECIP FOR LCTNS IN THE LAKES REGION OF SE TX AND IN CNTRL LA FROM SUNRISE TO AROUND 10AM WITH FREEZING TEMPS XPCD FOR AEX AND LAKES REGION IN SE TX.
433 AM EST THU MAR 5 2015 A STRONG COLD FRONT WILL MOVE THROUGH THE FORECAST AREA THIS AFTERNOON.
LOOK FOR FREEZING RAIN AND SLEET TO CONTINUE AT NASHVILLE UNTIL 08Z THEN SNOW THROUGH ABOUT 18Z. VERY MUCH CONCERNED FOR FREEZING RAIN AND SLEET WITH ICE ACCMUMLATIONS UPWARDS OF 0. LIQUID RAIN AND SLEET WILL CHANGE TO FREEZING RAIN AND SLEET AROUND 08Z THEN CHANGING TO SNOW AROUND 12Z.
HIGH PRESSURE BUILDING ACROSS THE WEST COAST WILL MAINTAIN DRY WEATHER CONDITIONS AND ABOVE AVERAGE TEMPERATURES THROUGH THE UPCOMING WEEKEND. UPPER LEVEL HIGH JUST OFF THE CALIFORNIA COAST ALLOWED TEMPERATURES TO WARM INTO THE 60S AND LOW 70S ACROSS THE DISTRICT TODAY.
At the surface, high pressure tracking southeast across northwest Iowa will drift across our area today bringing another 24 hours of unseasonably cold weather with afternoon highs struggling through the teens over most of the forecast area, which is about 30 degrees below where it should be for the first week in March. The long wave trough from Lake Superior to New Mexico evident on early morning water vapor imagery will move through the Midwest later today.
THE LOW-LEVEL FLOW WILL STEADILY VEER TO THE SOUTH AS THE RIDGE OVERHEAD WEAKENS AND A COLD FRONT APPROACHES AND MOVES INTO THE AREA TONIGHT. HIGH PRESSURE WILL WEAKEN ON THURSDAY AS A COLD FRONT MOVES INTO NORTHERN FLORIDA.
1155 PM EST WED MAR 4 2015 A SECONDARY ARCTIC COLD FRONT WILL CROSS THE REGION OVERNIGHT.
LATEST HI-RES MODELS STILL PRETTY CONSISTENT WITH THE TIMING TO GO BELOW FREEZING AFTER 3 AM ACROSS THE FAR NORTHWEST WITH THE SAME GENERAL EXTENT SO CURRENTLY NO CHANGES TO TIMING OR AREA FOR OUR WINTER WEATHER PRODUCTS. THIS IS ONE OF OUR MOST CLIMATOLOGICALLY COOLER SPOTS AS WELL. COLD FRONT PUSHING THROUGH EET AT THIS TIME WITH NORTH WINDS BEHIND THE FRONT. SOME FREEZING RAIN CANNOT BE RULED OUT FOR BHM AND TCL WHERE THE FORECAST SOUNDINGS ARE FLUCTUATING BETWEEN 30 AND 33 DEGREES BETWEEN 18Z TO 21Z. 88 FREEZING RAIN ADVISORY FROM 3 AM TO 3 PM CST THURSDAY FOR THE FOLLOWING COUNTIES: BIBB.
Early this morning, high pressure is building into the area from the northwest. High pressure will remain over the area most of today and temperatures are not expected to rebound much as mixing will be weak.
1250 AM EST THU MAR 5 2015 A COLD FRONT WILL MOVE ACROSS THE NORTH COUNTRY OVERNIGHT. SECONDARY COLD FRONT IS CROSSING THE REGION FROM NW-SE AT 05Z. FOR THURSDAY: RIDGE OF HIGH PRESSURE BUILDS ACROSS THE NORTH COUNTRY WITH MODERATELY STRONG COLD AIR ADVECTION GENERALLY WEAKENING INTO THE AFTERNOON. LOOKING AT HIGHS IN THE TEENS TO THE LOW 20S. IDEAL RADIATIONAL COOLING UNDER RIDGE OF HIGH PRESSURE WITH 925 MB TEMPS OF -17 TO -19C SHOULD ALLOW FOR SUB-ZERO LOWS AREAWIDE, WITH THE COLDEST READINGS IN THE NORTHEAST KINGDOM (NEAR 20 BELOW).
but the high winds should be confined mainly to this region. so no high wind highlight planned for at this time along the highway 2 corridor.
A ridge of high pressure will continue to build over Northern California through the rest of the week with dry conditions and warming temperatures each day.
338 AM CST Thu Mar 5 2015 Upper level trough axis approaching the region with precipitation occurring east of the forecast area across central and east Texas. Have also canceled the High Wind Warning for Guadalupe Pass due to recent trends.
A RIDGE OF HIGH PRESSURE WILL MOVE INTO THE AREA TONIGHT PROVIDING LIGHT WINDS.
352 AM CST THU MAR 5 2015 HIGH PRESSURE SLIDES ACROSS THE UPPER MISSISSIPPI RIVER VALLEY REGION TODAY PROVIDING UNSEASONABLY COLD TEMPERATURES AND MOSTLY SUNNY SKIES. THE HIGH SLIDES EAST OF THE AREA TONIGHT AS A WEAK TROUGH PUSHES EAST ACROSS THE NORTHERN PLAINS.
BEHIND THE TROUGH WEST WINDS WILL ADVECT WARMER AIR IN. ELSEWHERE TEMPERATURES WILL STILL BE WARMER THAN RECENT HISTORY WITH READINGS IN THE UPPER 20S TO LOW 30S.
COOLER AIR MOVING WILL ALLOW TEMPERATURES TO FALL DURING THE DAY. AND AS READING DROP BELOW FREEZING. AHEAD OF A STRONG COLD FRONT. MUCH COLDER AIR ACCOMPANYING THE FRONT WILL CHANGE RAIN TO FREEZING RAIN TOWARDS SUNRISE. FREEZING RAIN WILL TRANSITION TO SLEET AND/OR SNOW.
930 PM PST WED MAR 4 2015 Mild high pressure will build over the Inland Northwest the next few days bringing a prolonged period of dry weather.
1140 PM EST WED MAR 4 2015 A COLD FRONT WILL MOVE SOUTHEAST ACROSS THE LOCAL AREA THIS EVENING.
1251 AM EST THU MAR 5 2015 A DISTURBANCE MOVING ALONG A COLD FRONT WELL SOUTH OF THE AREA WILL PASS BY THE REGION THIS MORNING.
A SUNNY DAY IS IN STORE AS THE HIGH DROPS INTO ILLINOIS. A SHORT WAVE TROF WILL MOVE ACROSS THE FORECAST AREA LATE TONIGHT.
349 AM CST Thu Mar 5 2015 (Today and tonight) A mix of freezing rain, sleet, and snow was observed across all of West Central TX yesterday afternoon and evening, but precipitation has really tapered off over the past few hours. The upper-level trough axis remains just to our west as of 3 AM, but the plume of mid/upper-level moisture has been shunted off to the east. The low clouds are beginning to break up from Lubbock to Wichita Falls as dewpoints fall into the teens. Most areas will see overnight lows in the lower 20s, but a few low- lying areas may drop into the mid/upper teens.
957 PM PST WED MAR 4 2015 UPDATED AVIATION SECTION HIGH PRESSURE WILL BUILD IN OVER THE REGION THROUGH THE WEEKEND BRINGING WARMER TEMPERATURES AND MOSTLY CLEAR SKIES.
1147 PM CST WED MAR 4 2015 RIDGE OVER THE EASTERN NORTH PACIFIC. UPPER TROUGH FROM CANADIAN MARITIMES TO SOCAL BAJA. SURFACE COLD FRONT FROM WEST TEXAS THROUGH THE SOUTHEAST CONUS INTO THE CAROLINAS. UPPER LEVEL HIGH PRESSURE THAT HAS BEEN ANCHORED ALONG THE WEST COAST FOR THE LAST FEW WEEKS. AS MENTIONED THE UPPER LEVEL HIGH PRESSURE SYSTEM BEGINS TO BUILD EAST THURSDAY. UPPER TROUGH CONTINUES ITS SOUTH AND EAST PROGRESSION AND BLOCK DEVELOPS OVER THE WEST COAST.
318 AM CST THU MAR 5 2015 TEMPS AREAWIDE CURRENTLY AT OR BELOW FREEZING ACROSS MUCH OF NORTHEAST TEXAS. AREAS ALONG INTERSTATE 20 STILL CONTINUING THE TRANSITION FROM RAIN TO SLEET WITH MOST LOCATIONS STILL HOVERING A FEW DEGREES ABOVE FREEZING. EXPECTING RAIN TO TRANSITION TO FREEZING RAIN AND SLEET BY DAYBREAK ACROSS THESE AREAS. COULD SEE LOW TEMPERATURES IN THE UPPER TEENS ACROSS SOUTHERN ARKANSAS WITH ALL OTHER AREAS IN THE LOW TO MID 20S. HIGH PRESSURE TO SHIFT EAST LATE IN THE WEEKEND ALLOWING FOR A GRADUAL WARMING TREND ACROSS THE REGION.
THIS BAND OF SNOW IS EXPECTED TO ACCELERATE EASTWARD ACROSS THE MID STATE THIS MORNING, WITH NORTHERN AREAS PICKING UP MAINLY SNOW AND SLEET AND SOUTHERN AREAS PICKING UP MAINLY SLEET AND FREEZING RAIN. BASED ON REPORTS SO FAR, MOST PLACES OVERNIGHT RECEIVED AROUND A TENTH OF AN INCH OF FREEZING RAIN. HEAVY ICE ACCUMULATIONS, FROM FREEZING RAIN, ARE EXPECTED OVER EXTREME SOUTHERN AND EAST-CENTRAL AREAS.
HIGH PRESSURE IN CONTROL NOW IN EASTERN IDAHO. EXPECT NEAR CLIMATIC NORMALS TODAY AND MUCH WARMER THAN NORMAL FOR FRI/SAT.
SCATTERED SHOWERS WILL CONTINUE ON AND OFF ACROSS THE TAF SITES OVERNIGHT IN ADVANCE OF AN APPROACHING COLD FRONT. COLD AIR WILL PUSH IN AND TEMPERATURES WILL FALL BELOW FREEZING.
THE COLD FRONT WAS APPROACHING THE NORTHWEST CORNER OF THE FORECAST AREA AND WILL BE MOVING THROUGH ALL OF THE TAF SITES DURING THE PREDAWN HOURS. SHOWERS WERE INCREASING JUST IN ADVANCE OF THE COLD FRONT.
223 AM MST THU MAR 5 2015 THE WARM-UP BEGINS TODAY AS A LEE-SIDE PRESSURE TROF COMBINES WITH LLVL WAA. A DECOUPLED AIR MASS EAST OF THIS TROF THIS TROF AND CLEAR SKIES/SNOW PACK HAS ALLOWED TEMPS TO FALL BELOW ZERO DOUGLAS- CHADRON. LLVL GRADIENT HAS TIGHTENED WEST OF THE TROF BOOSTING WIND GUSTS 40-50 MPH. MIXING DOWN WARMER TEMPS ALOFT RESULTING IN TEMPS IN THE TEENS. PRESSURE TROF WILL CONTINUE SLIDING EAST THIS MORNING SO WOULD ACTUALLY EXPECT SOME MODERATION BEFORE SUNRISE.
Large scale lift and moisture associated with a passing positively- tilted long wave trough has moved east ahead and is currently impacting north Texas south across the Hill Country. as temperatures will be slow to rise above freezing.
820 PM PST WED MAR 4 2015 HIGH PRESSURE WILL BUILD IN OVER THE REGION THROUGH THE WEEKEND BRINGING WARMER TEMPERATURES AND MOSTLY CLEAR SKIES.
1233 AM EST THU MAR 5 2015 A COLD FRONT WILL MOVE ACROSS THE NORTH COUNTRY OVERNIGHT. FOR THURSDAY: RIDGE OF HIGH PRESSURE BUILDS ACROSS THE NORTH COUNTRY WITH MODERATELY STRONG COLD AIR ADVECTION GENERALLY WEAKENING INTO THE AFTERNOON. LOOKING AT HIGHS IN THE TEENS TO THE LOW 20S. IDEAL RADIATIONAL COOLING UNDER RIDGE OF HIGH PRESSURE WITH 925 MB TEMPS OF -17 TO -19C SHOULD ALLOW FOR SUB-ZERO LOWS AREAWIDE, WITH THE COLDEST READINGS IN THE NORTHEAST KINGDOM (NEAR 20 BELOW).
1149 PM CST WED MAR 4 2015 FOR 06Z TAFS /ISSUED 944 PM CST WED MAR 4 2015/ THE COLD FRONT HAS NOW PUSHED THROUGH THE ENTIRE AREA. OBS AROUND THE TENNESSEE VALLEY ARE IN THE LOW TO MID 40S WITH THE EXCEPTION BEING NW ALABAMA AND SOUTHERN MIDDLE TENNESSEE WHERE TEMPS ARE IN THE MID 30S. UPSTREAM OBSERVATIONS AT OR BELOW FREEZING. WHEN SURFACE TEMPERATURES BEGIN TO DROP BELOW FREEZING THIS WILL TRANSITION OVER TO FREEZING RAIN. STUMPF 05Z OBS SHOW TEMPERATURES NEAR FREEZING AT KMSL. EXPECT PRECIP TO BEGIN TO TRANSITION OVER TO FREEZING RAIN WITH SOME SLEET MIXED IN AT KMSL.
342 AM CST THU MAR 5 2015 WARMING WILL BEGIN SURFACE AND ALOFT TODAY AS HIGH PRESSURE OVER THE AREA MOVES EAST. SURFACE TEMPERATURES WILL NOT RISE MUCH AFTER THE EVENING DROP BUT THEY CERTAINLY WILL NOT FALL LATE TONIGHT UNDER THE STRENGTH OF THE LOW LEVEL WARMING. A LITTLE DISAGREEMENT IN THE MODELS REGARDING HOW QUICKLY THE WARMER LOW LEVEL AIR WILL WORK BACK INTO THE REGION.
STRONG COLD FRONT IS BLASTING THROUGH SOUTH TEXAS CURRENTLY. THERE IS A POSSIBILITY A FREEZING LAYER WILL DEVELOP OFF THE SURFACE AROUND 12Z THROUGH 18Z THURSDAY.
AS RIDGING CONDITIONS AND EXISTING SNOW/ICE COVER WILL KEEP HIGHS GENERALLY IN THE 30S.
346 AM CST THU MAR 5 2015 WV IMAGERY THIS MORNING WAS SHOWING AN ELONGATED POS TILT TROF EXTENDING FROM ERN CANADA TO THE SRN PLAINS WITH AN UPSTREAM RIDGE BUILDING OVER THE WRN CONUS.
357 AM CST THU MAR 5 2015 356 AM CST HIGH PRESSURE WAS CENTERED TO OUR WEST OVER THE MID-MISSOURI VALLEY EARLY THIS MORNING. AND WILL SPREAD SOUTHEAST ACROSS CENTRAL ILLINOIS THIS AFTERNOON IN THE WAKE OF A POSITIVE-TILT UPPER TROUGH PROPAGATING ACROSS THE AREA THIS MORNING. THOUGH HIGH CLOUD COVER ASSOCIATED WITH THE UPPER JET STREAK AHEAD OF THE TROUGH AXIS HAS HELPED TO KEEP READINGS FROM BOTTOMING OUT TOO HARD OVERNIGHT. MAY SEE A FEW MORE SUB-ZERO TEMPS THROUGH SUNRISE ESPECIALLY ACROSS NORTH CENTRAL ILLINOIS ALONG THE NORTHWEST PERIPHERY OF THE HIGH CLOUD COVER. THE HIGH CLOUDS WILL SHIFT OFF TO THE EAST TODAY WITH THE UPPER TROUGH. HAVE MAINTAINED FORECAST HIGHS A FEW DEGREES ABOVE THE WARMER END OF THE GUIDANCE SPECTRUM. THE HIGH WILL SHIFT SOUTHEAST OF THE AREA TONIGHT.
THE PATTERN ALOFT FEATURED UPPER RIDGING IN THE PACIFIC OCEAN. WHILE AN UPPER TROUGH WAS CROSSING THE CENTRAL PLAINS. HEIGHTS RISE ON THURSDAY AND THE AIRMASS MODERATES AS THE RIDGE AXIS MOVES EAST OF THE MISSOURI RIVER. THURSDAY WILL BE THE TRANSITION DAY BETWEEN THE COLD AIRMASS TODAY AND EVEN WARMER AIR WHICH MOVES IN DURING THE LATTER PART OF THE WEEK AND INTO THE WEEKEND.
40 THE COLD FRONT WAS WELL OFFSHORE AT 0530Z. AND IF THE TEMPERATURES FALL ENOUGH FREEZING RAIN OR DRIZZLE MAY BECOME AN ISSUE. THE HIGH RESOLUTION MODELS END THE PRECIPITATION CHANCES BY AROUND 13Z AT BOTH SITES AND LIFT THE CEILINGS TO VFR BY 19Z. A COLD FRONT IS MOVING ACROSS SE TX AND WILL LIKELY CLEAR THE COAST BY 11 PM. AM HESITANT TO MAKE BIG CHANGES AT THIS TIME BUT RAP AND NAM FORECAST SOUNDINGS SHOW A FAIRLY DEEP FREEZING LAYER BETWEEN 500-3500 FEET WHICH APPEARS COLD ENOUGH TO CHANGE PRECIP TO SLEET.
WARM FRONT MOVES ACROSS THE REGION AS 925 MB TEMPS WARM INTO THE SINGLE DIGITS ABOVE ZERO CELSIUS.
WIDESPREAD FREEZING FOG FROM EAST SLOPES OF THE CENTRAL MOUNTAIN CHAIN TO THE ERN PLAINS THE MAIN IMPACT OVERNIGHT AND WILL ADD FREEZING FOG ADVISORY OVERNIGHT FOR ZONES WHERE THE LOW STRATUS CLOUDS OFTEN INTERSECT THE HIGHER TERRAIN OF THE NORTHEAST AND CENTRAL HIGHLANDS. THE REMNANT UPPER LOW NEAR THE BOOTHEEL AND UPPER LEVEL TROUGH FROM THE NW WILL CROSS NM TONIGHT AND MOVE EAST OF OUR AREA THURSDAY. THE BACK DOOR COLD FRONT HAS MADE IT SOUTH THROUGH OUR CWA AND PRESSED UP AGAINST THE EAST SLOPES OF THE CENTRAL MOUNTAIN CHAIN. MANY ROADS HAVE ICED UP DUE TO FREEZING DRIZZLE AND FREEZING FOG THIS MORNING AND THE RAPID DROP IN TEMPERATURES HAVE KEPT UNTREATED ROADS HAZARDOUS.
230 AM EST THU MAR 5 2015 A STRONG COLD FRONT WILL MOVE THROUGH THE FORECAST AREA THIS AFTERNOON.
Will remain in the freezer today with the Arctic air mass in place and temperatures will struggle to reach the freezing mark.
240 AM EST THU MAR 5 2015 HIGH PRESSURE WILL GRADUALLY BUILD IN FROM THE WEST THROUGH THURSDAY.
A STRONG 185 KNOT 250 MB JET MAX FROM THE MID MISSISSIPPI VALLEY TO THE EASTERN GREAT LAKES WILL MOVE OFF TO THE EAST AS AN UPPER TROUGH MOVES INTO WISCONSIN THIS MORNING. 700 MB DOWNWARD MOTION BECOMES STRONGER BEFORE BECOMING WEAK UPWARD AS A SECOND WEAKER TROUGH MOVES INTO SOUTHERN WISCONSIN LATE TONIGHT.
MIDLEVEL DRYING AND COLD ADVECTION ENSUE BEHIND THE FRONT/TROUGH THIS EVENING. BY THE TIME TEMPERATURES FALL TO NEAR FREEZING.
CONDITIONS WILL IMPROVE FROM NORTHWEST TO SOUTHEAST DURING THE EARLY MORNING HOURS AS A WEAK COLD FRONT MOVES THROUGH THE AREA AND DRIES THINGS OUT. /ISSUED 937 PM CST SUN FEB 8 2015/ SOME FOG BEGINNING TO DEVELOP ACROSS THE COASTAL COUNTIES THIS EVENING AND THIS MAY SPREAD INLAND TOWARD THE US 59 CORRIDOR OVERNIGHT AS THE COLD FRONT APPROACHES FROM THE NORTH. NEXT 7 DAYS PRIMARILY REMAINS A TEMP FCST WITH MEAGER MOISTURE AVAILABILITY AND UPPER RIDGING (IN GENERAL) KEEPING THINGS DRY. THE FOG MAY BECOME MORE WIDESPREAD OVER THE BAYS AND NEARSHORE WATERS LATER THIS EVENING AND OVERNIGHT AS A PREFRONTAL TROUGH APPROACHES THE COAST. THE TROUGH WILL MOVE OFF THE COAST AROUND SUNRISE MONDAY MORNING. THE ACTUAL COLD FRONT SHOULD ARRIVE BY MID MORNING AND HELP SCOUR OUT ANY LINGERING FOG.
253 AM CST Mon Feb 9 2015 Behind yesterday's cold front, cooler air was working its way across the region. Cloud cover associated with the departing upper level trough was working its way to the southwest across the region overnight as well. The dry and cool trend will continue tonight with temperatures falling into the lower 20s to lower 30s from northeast to southwest across the region.
1258 AM EST MON FEB 9 2015 A COLD FRONT WILL COME THROUGH MONDAY.
AFTER 12Z MONDAY CHANCES OF SHOWERS WILL INCREASE IN ADVANCE OF A TROUGH DEVELOPING ACROSS THE EASTERN GULF.