Aikyam-Lab/Synoptic-Bench huggingface dataset:
WV imagery shows the upper trough making landfall in srn Sonora, and advecting a thick canopy of CS over West Texas and Southeast New Mexico. Low level mstr field is depicted to be rather diffuse except INVOF srn Pecos/nrn Brewster where low level wind fields indicate a convergent area of low pressure. By Wed mid level flow transitions to weak wly, but enough for surface pressure falls to organize into a well defined lee trof with a 22C-24C 85h thermal ridge from Panhandle into Upper Trans Pecos. Meanwhile a cold front will move thru the TX plains Fri AM. Noticeably cooler N of the Pecos River Fri PM, by about 20 degrees.
HIGH PRESSURE WILL BUILD OVER THE REGION WEDNESDAY WITH FAIR AND COOL CONDITIONS.
QUITE AN ACTIVE AFTERNOON OUT THERE AS THE MAIN WARM FRONT HAS LIFTED WELL NORTH OF THE AREA.
622 PM CDT TUE MAR 31 2015 QUITE AN ACTIVE AFTERNOON OUT THERE AS THE MAIN WARM FRONT HAS LIFTED WELL NORTH OF THE AREA.
PASSAGE OF SURFACE AND UPPER LEVEL RIDGING SUPPORTS DRY AND MAINLY CLEAR SKIES MUCH OF NEXT 24 HOURS.
COOL AND BREEZY CONDITIONS AREA EXPECTED TO PERSIST THROUGH LATE WEDNESDAY NIGHT AS THE NEXT DRY COLD FRONT MOVES THROUGH THE AREA WEDNESDAY AFTERNOON. TEMPERATURES WILL WARM SLIGHTLY BY THE END OF THE WEEK AS HIGH PRESSURE BUILDS IN.
A STRONG COLD FRONT WILL ALSO CROSS THE AREA IN ASSOCIATION WITH THIS WAVE. SOUTHWEST THROUGH BROKEN BOW AND NORTH PLATTE NEAR THE COLD FRONT. COOLER 60S EXPECTED FARTHER WEST IN AREA OF INCREASING MID LEVEL CLOUD COVER AND COLD AIR ADVECTION.
A SERIES OF LOW PRESSURE TROUGHS MOVING ACROSS CALIFORNIA WILL BRING GUSTY WEST WINDS IN THE MOUNTAINS AND DESERTS THROUGH WEDNESDAY NIGHT.
WAVE IS PROGGED TO QUICKLY INTENSIFY WITH 500MB HGT FALLS OF 160M SPREADING OUT ACROSS MT WEDNESDAY MORNING WITH SFC CYCLOGENESIS OVER THE DAKOTA AND ATTENDANT COLD FRONT EXTENDING SWD INTO THE NEB PANHANDLE.
251 PM EDT TUE MAR 31 2015 HIGH PRESSURE WILL BUILD IN FROM THE WEST TONIGHT THROUGH WEDNESDAY AND WILL SHIFT OFFSHORE WEDNESDAY NIGHT.
826 PM EDT TUE MAR 31 2015 HIGH PRESSURE ACROSS THE SOUTHERN PENINSULA WILL REMAIN IN CONTROL WITH PLEASANT DRY WEATHER EXPECTED. WINDS REMAIN RELATIVELY WEAK FOR THE NEXT SEVERAL DAYS GIVEN THE POSITION OF HIGH PRESSURE RIDGE AXIS NEAR THE WATERS.
A WEAK LOW PRESSURE SYSTEM WILL MOVE SOUTHEASTWARD ACROSS NW ONTARIO TODAY. TONIGHT WILL SEE THE ADVANCEMENT OF A WARM FRONT FROM THE NORTHERN PLAINS INTO WESTERN MN. LOW PRESSURE. GUSTY NORTHWEST WINDS WILL DEVELOP BEHIND THE COLD FRONT IN WESTERN MN. AN H85 CLOSED LOW WILL TRACK ACROSS MANITOBA AND OVER ONTARIO WEDNESDAY NIGHT. WHILE DRAGGING A SFC REFLECTION COLD FRONT ACROSS THE EASTERN ZONES. THE COLD FRONT WILL BE THE FOCUS FOR SHOWERS AND A FEW THUNDERSTORMS WEDNESDAY EVENING.
405 PM EDT TUE MAR 31 2015 WEATHER WILL BE QUIET TONIGHT AND WEDNESDAY AS HIGH PRESSURE SETTLES INTO THE REGION.
HIGH PRESSURE REMAINS IN CONTROL, WITH SEA BREEZES EXPECTED TO DEVELOP ONCE AGAIN TOMORROW AFTERNOON FROM THE SE. /ISSUED 255 PM EDT TUE MAR 31 2015/ HIGH PRESSURE DOMINATES INTO THE WEEKEND.
H5 TROUGH AXIS BEGINS TO MOVE OVER THE CWA WEDNESDAY WITH A H25 HET STREAK PROG TO STRENGTHEN OVERHEAD DURING THE DAY.
AS SECOND UPPER TROUGH SWINGS EAST OUT OF NORTH CENTRAL TEXAS. A DEEPENING TROUGH ACROSS THE MIDWEST TO ALLOW FOR ENHANCED SOUTHERLY WINDS AREAWIDE.
HIGH PRESSURE REMAINS A BIT ELONGATED OVER THE AREA WITH A FRONTAL BOUNDARY FORECAST TO DROP INTO THE SAME REGION BUT REMAIN NORTH OF THE FORECAST AREA AS WELL. TEMPERATURES WILL REMAIN A BIT COOLER AT THE COAST EACH AFTERNOON. BUT WILL END UP IN THE LOWER TO MID 80S FARTHER INLAND.
CURRENTLY A WARM FRONT EXTENDS ACROSS NORTHERN OKLAHOMA THROUGH CENTRAL ARKANSAS AND INTO CENTRAL MISSISSIPPI. BY TONIGHT A BACK DOOR COLD FRONT WILL MOVE INTO THE REGION BRINGING MORE SHOWERS AND THUNDERSTORMS. THE BACK DOOR COLD FRONT WILL START RETREATING BACK EAST AS A WARM FRONT SO THERE WILL STILL BE A CHANCE OF SOME SHOWERS AND THUNDERSTORMS. THE WARM FRONT SHOULD EXIT THE FORECAST AREA WEDNESDAY NIGHT SO THERE WILL STILL BE A SMALL CHANCE OF THUNDERSTORMS.
A WEAK AREA OF LOW PRESSURE WS LOCATED OVER THE TX PANHANDLE.
WITH THE HIGHEST VALUES EAST OF HIGHWAY 25. THERE ARE STILL NO COUNTIES THAT MEET THE THREE HOUR REQUIREMENT FOR WINDS CLOSE TO 25 MPH WITH THE LOW RELATIVE HUMIDITY. ASSOCIATED SURFACE COLD FRONT WILL MOVE INTO NORTHWEST KANSAS WEDNESDAY AFTERNOON AND BE THE FOCUS FOR SCATTERED THUNDERSTORM DEVELOPMENT.
AN UPPER TROUGH PUSHED THROUGH CENTRAL CALIFORNIA TODAY. MODELS INDICATE ANOTHER UPPER LOW MOVING INTO CENTRAL CALIFORNIA WEDNESDAY AFTERNOON. EXPECT CONDITIONS TO BECOME WINDY AGAIN IN THE AFTERNOON DUE TO 100KT JET ALONG THE TROUGH.
HIGH PRESSURE IS CENTERED ACROSS THE TN VALLEY. WHILE YESTERDAYS COLD FRONT IS SITUATED ACROSS SOUTH-CENTRAL GA. THE HIGHEST POPS WILL BE SITUATED ALONG AND SOUTH OF THE OLD FRONT.
238 PM CDT Tue Mar 31 2015 Upper level low pressure area in southwest Mexico will move east tonight toward the Big Bend and weaken as another trough moves onshore on the west Coast. This trough will produce a slight chance of thunderstorms overnight across mainly west Texas. The upper level trough will quickly move east and be replaced by zonal flow through the weekend.
Despite weak CAA behind this boundary, full late March sunshine working on a dry airmass has resulted in 15z/10am temps rising well into the 50s and even the lower 60s in a few spots. A weak dry cold front will pass from northwest to southeast across central IL early this morning, with breezy southwest winds shifting to northwest. Little cold air is resident behind the front with a large scale ridge and warm air mass building into the northern Plains and Midwest.
THE HIGH PRESSURE RIDGE AXIS ALOFT IS ACROSS COLORADO THIS AFTERNOON AND WILL BE SHIFTING EAST INTO THE CENTRAL PLAINS TONIGHT AND WEDNESDAY. THE SURFACE FLOW BEHIND THE AFTERNOON'S COLD FRONT WILL TURN MORE UPSLOPE THROUGH THE NIGHT WHILE COLD AIR PUSHES SOUTH INTO THE AREA.
/ISSUED 238 PM CDT Tue Mar 31 2015/ Upper level low pressure area in southwest Mexico will move east tonight toward the Big Bend and weaken as another trough moves onshore on the west Coast. This trough will produce a slight chance of thunderstorms overnight across mainly west Texas. The upper level trough will quickly move east and be replaced by zonal flow through the weekend.
1218 PM EDT TUE MAR 31 2015 A POTENT BUT RELATIVELY FAST MOVING AREA OF LOW PRESSURE WILL MOVE SOUTHEAST FROM THE WESTERN GREAT LAKES AND RIDE ALONG THE MASON- DIXON LINE TODAY. HIGH PRESSURE WILL BUILD OVER THE REGION WEDNESDAY WITH FAIR AND COOL CONDITIONS.
701 PM EDT TUE MAR 31 2015 HIGH PRESSURE WILL BUILD IN FROM THE WEST TONIGHT THROUGH WEDNESDAY AND WILL SHIFT OFFSHORE WEDNESDAY NIGHT.
GENERALLY ALONG AND NORTH OF THE HIGHWAY 82 CORRIDOR WITHIN THE SEVERE THUNDERSTORM WATCH AREA. RIDGING WILL BUILD EAST THROUGH THE REGION. DESPITE THE TROUGH WEAKENING AS IT APPROACHES AND MOVES THROUGH THE CWA.
TODAY THROUGH WEDNESDAY NIGHT CURRENT SURFACE MAP PLACES WEAK HIGH PRESSURE ACROSS THE DAKOTAS. WITH TROF ACROSS WESTERN MONTANA/WESTERN WYOMING. WATER VAPOR SHOWS UPPER LEVEL RIDGE ACROSS THE NORTHERN PLAINS. UPPER RIDGE REMAINS ACROSS THE NORTHERN PLAINS WITH SURFACE TROF DEEPENING ACROSS EASTERN MONTANA/EASTERN WYOMING. STRONG COLD FRONT PUSHES THROUGH NORTHEAST WYOMING/NORTHWEST SOUTH DAKOTA LATE TONIGHT. LOCATION OF UPPER LOW AND LACK OF STRONG SUBSIDENCE SHOULD KEEP THIS FROM BEING A HIGH WIND EVENT.
1240 PM CDT TUE MAR 31 2015 LOW PRESSURE EAST OF IA WILL PULL AWAY AS ITS ASSOCIATED COLD FRONT STALL TODAY. THEN BEGINS LIFTING NORTH AS A WARM FRONT.
WEAK HIGH PRESSURE WILL SHIFT OVER THE AREA THIS MORNING AS A SFC TROF CROSSES THE ERN PART OF THE FA. CURRENT OBSERVATIONS SHOW AREAS OF PATCHY FOG IN THE FAR ERN ZONES AS WINDS REMAIN LIGHT AND THE LOW LEVEL MOISTURE MIXES. LOW PRESSURE WILL DEVELOP OVER THE HIGH PLAINS TODAY. RETURN FLOW WILL BRING WARMER AIR TO THE REGION. WITH HIGH TEMPS FCST IN THE LOW 60S WEST OF THE RED RIVER. MODELS IN GENERAL AGREEMENT ON KEEPING THINGS DRY AHEAD OF THE LOW ON WEDNESDAY.
131 PM MST TUE MAR 31 2015 NEAR RECORD TEMPERATURES ARE ONCE AGAIN POSSIBLE ACROSS PORTIONS OF THE LOWER DESERTS THROUGH LATE AFTERNOON.
800 PM EDT TUE MAR 31 2015 HIGH PRESSURE WILL SETTLE OVER THE OHIO VALLEY TONIGHT.
A COLD FRONT WILL COME THROUGH IN ASSOCIATION WITH AN ADVANCING TROUGH. AND WITH THE COLD FRONT TRENDING A BIT LATER ARRIVAL.
702 PM EDT TUE MAR 31 2015 HIGH PRESSURE PROVIDES A MAINLY DRY AND SEASONABLE WEDNESDAY.
/ISSUED 351 AM EDT TUE MAR 31 2015/ A QUASI-ZONAL MID TO UPPER FLOW WILL CONTINUE ACROSS SOUTH FLORIDA THROUGH THE FORECAST PERIOD WITH THREE WEAK MID LEVEL TROUGHS MOVING ACROSS THE NORTHEAST STATES. EACH OF THESE SYSTEMS WILL HAVE AN ASSOCIATED COLD FRONT MOVE INTO NORTH FLORIDA AND THEN WEAKEN AS THEY SLIDE SOUTH DOWN THE PENINSULA AS HIGH PRESSURE REMAINS OVER SOUTH FLORIDA.
AN 850 MB THERMAL RIDGE WILL MOVE INTO WESTERN NORTH DAKOTA TODAY. AS MOST RECORDS FOR LOCATIONS ACROSS WESTERN AND CENTRAL NORTH DAKOTA ARE ONLY IN THE LOW TO MID 70S. TONIGHT A COLD FRONT WILL ENTER WESTERN NORTH DAKOTA.
700 PM CDT TUE MAR 31 2015 A WARM FRONT HAS MOVED INTO NORTH ARKANSAS AND HAS TRIGGERED SOME THUNDERSTORMS ACROSS NORTHEAST PARTS OF THE STATE.
THE FOCUS OVER THE NEXT FEW DAYS TURNS TO A DEEPENING TROUGH MOVING INTO THE WESTERN STATES THAT WILL BRING A PERIOD OF WINDY CONDITIONS TO NORTHERN ARIZONA.
THE GRASSLAND FIRE DANGER INDEX IS FORECAST TO BE IN THE HIGH CATEGORY OVER MOST OF THE AREA THIS AFTERNOON.
This lower deck may creep as far north as KSJT (San Angelo), but should be short lived and should lift and dissipate from all locations by mid to late morning.
257 PM EDT TUE MAR 31 2015 A POTENT BUT RELATIVELY FAST MOVING AREA OF LOW PRESSURE WILL MOVE SOUTHEAST FROM THE WESTERN GREAT LAKES AND RIDE ALONG THE MASON- DIXON LINE TODAY. HIGH PRESSURE WILL BUILD OVER THE REGION WEDNESDAY WITH FAIR AND COOL CONDITIONS.
748 PM EDT TUE MAR 31 2015 A WEAK LOW PRESSURE SYSTEM WILL MOVE SOUTHEAST ACROSS THE LOWER GREAT LAKES TONIGHT. HIGH PRESSURE WILL MOVE EAST OVER THE AREA LATE TONIGHT AND EAST OF THE AREA WEDNESDAY.
FORECAST CONFIDENCE HIGH HEIGHTS WILL BEGIN RISING ALOFT AS MID-LEVEL RIDGING ACROSS THE CENTRAL CONUS SHIFTS EAST INTO THE AREA. THIS WILL SUPPORT WEAK AND TRANSIENT SURFACE RIDGING OVERNIGHT. 925 MB TEMPERATURES SUPPORT LOWS RANGING FROM THE LOWER 30S IN THE NE CWA TO THE UPPER 30S IN THE SW.
ASSOCIATED SURFACE COLD FRONT WILL MOVE INTO NORTHWEST KANSAS WEDNESDAY AFTERNOON AND BE THE FOCUS FOR SCATTERED THUNDERSTORM DEVELOPMENT.
101 PM EDT TUE MAR 31 2015 LOW PRESSURE WILL SKIRT ACROSS NORTHERN OHIO TODAY AS IT TRACKS SOUTHEAST FROM THE UPPER MIDWEST. A WEAK COLD FRONT IN ASSOCIATION WITH THE LOW WILL MOVE THROUGH THE AREA THIS AFTERNOON. HIGH PRESSURE WILL SETTLE OVER THE EASTERN OHIO VALLEY WEDNESDAY MORNING ALLOWING FOR NEAR NORMAL CONDITIONS.
522 PM EDT TUE MAR 31 2015 HIGH PRESSURE PROVIDES A MAINLY DRY AND SEASONABLE WEDNESDAY.
407 PM EDT TUE MAR 31 2015 A POTENT BUT RELATIVELY FAST MOVING AREA OF LOW PRESSURE WILL MOVE SOUTHEAST FROM THE WESTERN GREAT LAKES AND RIDE ALONG THE MASON- DIXON LINE TODAY. HIGH PRESSURE WILL BUILD OVER THE REGION WEDNESDAY WITH FAIR AND COOL CONDITIONS.
CURRENTLY A COLD FRONT EXTENDS FROM EXTREME EASTERN WASHINGTON INTO THE BLUE MOUNTAINS THEN SOUTH TO SOUTH-CENTRAL OREGON.
133 PM EDT TUE MAR 31 2015 LOW PRESSURE WILL SKIRT ACROSS NORTHERN OHIO TODAY AS IT TRACKS SOUTHEAST FROM THE UPPER MIDWEST. A WEAK COLD FRONT IN ASSOCIATION WITH THE LOW WILL MOVE THROUGH THE AREA THIS AFTERNOON. HIGH PRESSURE WILL SETTLE OVER THE EASTERN OHIO VALLEY WEDNESDAY MORNING ALLOWING FOR NEAR NORMAL CONDITIONS.
Dew points will be higher across far southwest Missouri where lows will be in the lower to middle 50s.
953 PM EDT TUE MAR 31 2015 HIGH PRESSURE WILL BUILD IN FROM THE WEST TONIGHT THROUGH WEDNESDAY AND WILL SHIFT OFFSHORE WEDNESDAY NIGHT.
911 PM EDT TUE MAR 31 2015 A WEAK LOW PRESSURE SYSTEM WILL MOVE SOUTHEAST ACROSS THE LOWER GREAT LAKES TONIGHT. HIGH PRESSURE WILL MOVE EAST OVER THE AREA LATE TONIGHT AND EAST OF THE AREA WEDNESDAY.
A WARM FRONT IS DRAPED ACROSS NORTH CENTRAL OK. A FEW STORMS MAY TRY TO DEVELOP THIS FAR SOUTH ACROSS NW OK NEAR THE DRYLINE AND COLD FRONT INTERSECTION.
336 PM EDT TUE MAR 31 2015 HIGH PRESSURE PROVIDES A MAINLY DRY AND SEASONABLE WEDNESDAY.
1110 AM PDT TUE MAR 31 2015 A vigorous cold front will move through the area today. The weekend could be even cooler with continued showers. Morning update: The cold front continues to slowly work east through the region with the 1030 AM position roughly from Bonners Ferry to Moscow and bending back toward Walla Walla. Snow has been falling on Stevens Pass but above freezing temperatures have kept any accumulations to grassy surfaces. Winds are picking up behind the front as cooler air spills into the region and pressure gradients continue to tighten. 18Z TAFS: A cold front has shifted into Idaho with scattered light showers and occasional MVFR cigs. Afternoon instability will promote isolated showers and a few thunderstorms with the highest threat over the northern/eastern mountains.
A COLD FRONT WILL MOVE ACROSS THE AREA ON WEDNESDAY WITH GUSTY NORTHWEST WINDS BEHIND IT.
THIS EVENING THROUGH WEDNESDAY NIGHT VERY WARM AND DRY CONDITIONS ACROSS THE REGION EARLY THIS AFTN WITH UPPER RIDGE AXIS SHIFTING INTO THE NRN PLAINS. WATER VAPOR SHOWS UPPER TROF PUSHING THROUGH THE PAC NW. PRES FALLS EXTEND THROUGH THE NRN ROCKIES/NRN PLAINS AHEAD OF APPROACHING UPPER TROF. UPPER TROF WILL WORK INTO THE NRN ROCKIES WITH ASSOCD CDFNT PUSHING INTO THE WRN DAKOTAS AFT MIDNIGHT. TEMPS WILL BE NOTABLY COOLER.
1136 AM EDT TUE MAR 31 2015 COOL HIGH PRESSURE WILL BUILD IN FROM THE NORTHWEST TODAY AND WEDNESDAY. LOW PRESSURE WILL MOVE EAST TO THE SOUTH OF SOUTHERN NEW ENGLAND TONIGHT.
316 PM EDT TUE MAR 31 2015 A WEAK LOW PRESSURE SYSTEM WILL MOVE SOUTHEAST ACROSS THE LOWER GREAT LAKES TONIGHT. HIGH PRESSURE WILL MOVE EAST OVER THE AREA LATE TONIGHT AND EAST OF THE AREA WEDNESDAY.
1114 AM EDT TUE MAR 31 2015 THE LOW PRESSURE THAT BROUGHT SOME PRECIPITATION OVER THE LAST 24 HOURS WILL BE SLIDING OFF TO THE EAST TODAY AND A HIGH PRESSURE RIDGE WILL MOVE IN TONIGHT. HIGH TEMPERATURES FOR TODAY WILL RANGE FROM THE LOWER 50S IN SOUTHERN MICHIGAN TO THE MIDDLE 60S NEAR THE OHIO RIVER. LOW TEMPERATURES TONIGHT WILL RANGE FROM THE LOWER 30S IN SOUTHERN MICHIGAN TO THE UPPER 40S ALONG THE OHIO RIVER. THE OVERALL UPPER AIR PATTERN THIS PERIOD WILL BEGIN TO SHIFT WITH A LARGE SCALE TROF EVENTUALLY AMPLIFYING OVER WESTERN NORTH AMERICA. CHALLENGES THIS PERIOD INCLUDE TIMING OF INDIVIDUAL SHORT WAVE TROFS MOVING THROUGH THE LONG WAVE PATTERN.
TONIGHT: LEE HIGH PLAINS TROUGHING WILL CONTINUE THIS EVENING. FROM A BLEND OF THE 4 KM NAM, WRF-ARW, WRF-NMM, CONVECTION SHOULD FIRE IN THE 4-6 PM TIME FRAME, ROUGHLY ALONG THE HIGHWAY 83 CORRIDOR.
AN UPPER LEVEL RIDGE WILL MOVE ACROSS COLORADO IN A WESTERLY FLOW ALOFT. A LEE SIDE TROUGH WILL BE ALONG THE BASE OF THE FOOTHILLS TODAY AND EVENTUALLY SHIFTS EASTWARD LATE THIS AFTERNOON OR EVENING. COULD SEE GUSTS TO 25 MPH IN THE HIGHER TERRAIN AND WEST OF THE TROUGH. AN UPPER LEVEL TROUGH OVER THE PACIFIC ON WEDNESDAY WILL PUSH THE RIDGE OVER THE AREA OFF TO THE EAST.
A QUASI STATIONARY BOUNDARY WILL SLOWLY MOVE NORTHWARD AS A WARM FRONT AND NOT REALLY MOVE TOO FAR.
WHERE BEST MOISTURE /INSTABILITY/AND DIURNAL HEATING INFLUENCES MOST PERSISTENT AS STATIONARY FRONT CURRENTLY ACROSS CNTRL PORTIONS OF MS/AL/GA MOVES NORTHWARD AND BECOMES DIFFUSE JUST S OF THE TN/AL BORDER AND A COLD FRONT DROPS FROM THE NRN OHIO RIVER VALLEY REGION TO NEAR THE TN/KY BORDER. WILL LEAN ALSO WITH A COMPROMISE ON HIGHS FOR THIS AFTERNOON BETWEEN GFS/EURO VALUES WITH HIGHS RANGING FROM 5 TO AROUND 10 DEGREES WARMER THAN SEASONAL NORMAL VALUES. UPPER LEVEL RIDGING INFLUENCES WILL BECOME ENHANCED ENOUGH BY WED AFTERNOON TO LIMIT THE POTENTIAL OF ANY CONVECTION TO LOCATIONS IN THE VICINITY OF THE TN/AL BORDER.
SHOWERS WILL CONTINUE INTO THE EVENING BEHIND A PASSING COLD FRONT.
346 PM EDT TUE MAR 31 2015 ISSUED AT 345 EDT TUE MAR 31 2015 CURRENT CONDITIONS ACROSS THE AREA FEATURE MAINLY CLEAR SKIES WITH A AN UPSTREAM DRY COLD FRONT MOVING SOUTHEAST. WHILE THE CENTER OF HIGH PRESSURE WILL NOT HAVE MOVED INTO THE AREA. SOME RIDGE VALLEY SPLIT WILL STILL DEVELOP TONIGHT. THE DRY AIR THIS EVENING AND GUSTY WINDS WITH THE COLD FRONT WILL ALLOW FOR SOME HAZARDOUS FIRE WEATHER CONDITIONS AND WILL KEEP THIS IN THE HWO. WINDS WILL BE LIGHT DURING THIS TIME AND WITH THE HIGHER SUN ANGLE. TEMPERATURES WILL REBOUND INTO THE MID 60S DESPITE THE COLD FRONT PASSING THROUGH ON TUESDAY EVENING. STILL A DRY AIR MASS WILL BE IN PLACE WITH AFTERNOON RELATIVE HUMIDITIES DROPPING INTO THE LOWER 30 PERCENT RANGE.
740 AM EDT TUE MAR 31 2015 A COLD FRONT WILL CROSS THE REGION THIS MORNING. HIGH PRESSURE WILL BUILD ACROSS THE AREA TONIGHT AND WEDNESDAY.
AN UPPER LEVEL RIDGE AXIS WILL BE OVER THE FORECAST AREA TODAY BUT WILL BE REPLACED BY A TROUGH WHICH WILL SHIFT INTO THE ROCKIES TONIGHT AND WEDNESDAY. MILD TEMPERATURES TODAY WILL BE REPLACED WITH COOLER AIR WEDNESDAY AS A SHORT WAVE NEAR THE CANADA US BORDER DRIVES A COLD FRONT SOUTHWARDS INTO THE NORTHERN AND CENTRAL ROCKIES.
CHATTANOOGA AIRPORT, TN 73 50 75 52 / 40 20 10 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 72 44 69 48 / 30 20 10 20 OAK RIDGE, TN 73 45 71 48 / 20 10 10 20 TRI CITIES AIRPORT, TN 69 39 66 40 / 20 10 0 10.
HIGH PRESSURE WILL MOVE ACROSS THE GREAT LAKES AND OHIO VALLEY LATE TODAY AND TONIGHT BEFORE MOVING TO THE EASTERN STATES ON WEDNESDAY.
A RIDGE OF HIGH PRESSURE IS EXTENDING FROM THE ATLANTIC ACROSS FL AND THE NORTHERN GULF COAST.
246 PM EDT TUE MAR 31 2015 HIGH PRESSURE PROVIDES A MAINLY DRY AND SEASONABLE WEDNESDAY.
REST OF THE NIGHT WILL BE DRY WITH HIGH PRESSURE BUILDING BACK ACROSS THE AREA.
333 PM EDT TUE MAR 31 2015 THE LOW PRESSURE THAT BROUGHT SOME PRECIPITATION OVER THE LAST 24 HOURS WILL BE SLIDING OFF TO THE EAST TODAY AND A HIGH PRESSURE RIDGE WILL MOVE IN TONIGHT. HIGH TEMPERATURES FOR TODAY WILL RANGE FROM THE LOWER 50S IN SOUTHERN MICHIGAN TO THE MIDDLE 60S NEAR THE OHIO RIVER. LOW TEMPERATURES TONIGHT WILL RANGE FROM THE LOWER 30S IN SOUTHERN MICHIGAN TO THE UPPER 40S ALONG THE OHIO RIVER. WX NIL TONIGHT INTO WEDNESDAY AS PLAINS UPPER RIDGE AXIS TRANSLATES EAST TOWARD THE WESTERN GREAT LAKES. ASSOCIATED MID LEVEL HEIGHT RISES/LARGE SCALE SUBSIDENCE IN ADVANCE WILL ALLOW SFC RIDGING TO BECOME ESTABLISHED OVER THE LOCAL AREA DURING THIS TIME.
556 PM EDT TUE MAR 31 2015 A POTENT BUT RELATIVELY FAST MOVING AREA OF LOW PRESSURE WILL MOVE SOUTHEAST FROM THE WESTERN GREAT LAKES AND RIDE ALONG THE MASON- DIXON LINE TODAY. HIGH PRESSURE WILL BUILD OVER THE REGION WEDNESDAY WITH FAIR AND COOL CONDITIONS.
A COLD FRONT DROPPING SOUTHWARD INTO THE AREA LATE THIS AFTERNOON AND EVENING MAY LEAD TO A BRIEF FLARE-UP OF CONVECTION OVER OUR SOUTHERN COUNTIES, BEFORE DIMINISHING AFTER SUNSET.
EAST-WEST ORIENTED RIDGE IS DRAPED OVER SOUTH FLORIDA AND THE ADJACENT GULF AND ATLANTIC OCEAN.
WEAK COLD FRONT STILL PROGGED TO MOVE THROUGH OVERNIGHT BRINGING DRIER AIR INTO THE REGION. BIGGEST TWEAK TO GRIDS WERE HOURLY TEMPS WHICH WERE RUNNING 5 TO 10 DEGREES WARMER THAN IN FORECAST GRIDS. CHATTANOOGA AIRPORT, TN 51 75 52 74 / 30 0 30 50 KNOXVILLE MCGHEE TYSON AIRPORT, TN 45 71 48 72 / 10 0 20 40 OAK RIDGE, TN 46 71 48 72 / 10 0 20 40 TRI CITIES AIRPORT, TN 39 68 40 73 / 10 0 10 40.
RESPLENDENT SUNSHINE HAS ALLOWED TEMPERATURES TO REBOUND INTO THE LOWER AND MID 70S ALONG THE ISLAND CHAIN. A SPLINTERED RIDGE OF HIGH PRESSURE IS LOCATED IN SOUTH FLORIDA AND THE ADJACENT ATLANTIC AND GULF WATERS. A DEEP LAYERED ANTICYLONE CENTERED IN THE SOUTHEAST GULF OF MEXICO WITH A SHARP RIDGE EXTENDING ACROSS SOUTH FLORIDA AND OUR REGION. WITH THE RIDGE OF HIGH PRESSURE LOCATED OVER SOUTH FLORIDA AND THE ADJACENT WATERS DROPPING SOUTHWARD AND SPLINTERING.
241 PM PDT Tue Mar 31 2015 Cooler, but still above normal weather expected this week. Weak cold front gradually tracking eastward across far NorCal. What a difference a day makes in the temperatures! Current observations in the valley are ranging about 5-12 degrees cooler than 24 hours ago. Valley highs should peak in the low 70s for the Redding vicinity to mid 70s around Stockton and Modesto.
Southerly winds to start the day and 850 MB temperatures in the 10 to 13 degree Celsius range will support highs in the lower and middle 70s. Isolated convection again cannot be ruled beginning as Wednesday morning and throughout the day as the boundary lifts north as a warm front.
635 AM CDT TUE MAR 31 2015 LOW PRESSURE EAST OF IA WILL PULL AWAY AS ITS ASSOCIATED COLD FRONT STALL TODAY. THEN BEGINS LIFTING NORTH AS A WARM FRONT.
120 PM EDT TUE MAR 31 2015 CONDITIONS ACROSS THE AREA THIS MORNING STILL SHOWING SOME SIGNIFICANT RIDGE VALLEYS DIFFERENCES AS THE DAYTIME HEATING BEGINS TO WARM THE AREA. A COLD FRONT TRAILING FROM THE LOW WILL DROP SOUTH THROUGH THE JKL FORECAST AREA DURING THE AFTERNOON. HIGH PRESSURE BUILDING IN WITH AN EASING PRESSURE GRADIENT WILL ALLOW FOR A QUICK DROP IN WINDS AS HEATING IS LOST THIS EVENING. WILL LOOK FOR A MODEST RIDGE/VALLEY TEMPERATURE DIFFERENCE BY DAWN ON WEDNESDAY. WINDS WILL SHIFT TO A MORE SRLY DIRECTION IN THE EVENING IN RESPONSE TO THE EXITING HIGH PRESSURE SYSTEM AND RETURN FLOW.
EARLY THIS MORNING A SURFACE TROF EXTENDED FROM THE IA/MO BORDER THRU CENTRAL KS TO THE TX PANHANDLE. TODAY & TONIGHT: QUIET WEATHER CONTINUES ACROSS THE NEIGHBORHOOD AS A BROAD UPPER DECK RIDGE SPREADS EAST ACROSS THE NORTHERN AND CENTRAL PLAINS. TONIGHT'S TEMPERATURES WILL BE MUCH WARMER AS GULF MOISTURE MIGRATES ACROSS KS. THIS CHARACTER WOULD INDUCE THE WESTERN PLAINS SURFACE TROF TO STRENGTHEN WHICH WOULD RESULT IN MUCH WARMER AND INCREASINGLY WINDY WEATHER ACROSS THE NEIGHBORHOOOD WEDNESDAY AFTERNOON. THE GREATEST THUNDERSTORM POTENTIAL IS STILL SLATED TO OCCUR WEDNESDAY NIGHT AS THE AFORE-MENTIONED UPPER-DECK WILL SWEEP A COLD FRONT SE INTO A MOIST AND UNSTABLE AIRMASS. THE RAPID SE-MOVING COLD FRONT DICTATES FINE- TUNING GREATEST CHANCES OF THUNDERSTORMS WITH CENTRAL KS DURING THE EVENING AND EASTERN KS LATER IN THE NIGHT.
725 PM EDT TUE MAR 31 2015 HIGH PRESSURE BUILDS IN TONIGHT BEHIND AN EXITING COLD FRONT. HIGH PRESSURE WEDNESDAY.
EARLY THIS MORNING A SURFACE TROF EXTENDED FROM THE IA/MO BORDER THRU CENTRAL KS TO THE TX PANHANDLE. BILLINGS WRIGHT TODAY & TONIGHT: QUIET WEATHER CONTINUES ACROSS THE NEIGHBORHOOD AS A BROAD UPPER DECK RIDGE SPREADS EAST ACROSS THE NORTHERN AND CENTRAL PLAINS. TONIGHT'S TEMPERATURES WILL BE MUCH WARMER AS GULF MOISTURE MIGRATES ACROSS KS. THIS CHARACTER WOULD INDUCE THE WESTERN PLAINS SURFACE TROF TO STRENGTHEN WHICH WOULD RESULT IN MUCH WARMER AND INCREASINGLY WINDY WEATHER ACROSS THE NEIGHBORHOOD WEDNESDAY AFTERNOON. THE GREATEST THUNDERSTORM POTENTIAL IS STILL SLATED TO OCCUR WEDNESDAY NIGHT AS THE AFORE-MENTIONED UPPER-DECK WILL SWEEP A COLD FRONT SE INTO A MOIST AND UNSTABLE AIRMASS. THE RAPID SE-MOVING COLD FRONT DICTATES FINE- TUNING GREATEST CHANCES OF THUNDERSTORMS WITH CENTRAL KS DURING THE EVENING AND EASTERN KS LATER IN THE NIGHT.
AN UPPER LEVEL TROUGH FINALLY MOVING EAST OF BAJA CALIFORNIA WILL SLOWLY WEAKEN AS IT MOVES ACROSS NORTHERN MEXICO TONIGHT AND TEXAS WEDNESDAY. THE SHOWERS AND THUNDERSTORMS END WEDNESDAY EVENING AS THE TROUGH AXIS MOVES OFF TO THE EAST.
THE AIR MASS WILL BECOME INCREASINGLY UNSTABLE TODAY AS SURFACE TEMPERATURES WARM INTO THE 70S AND A WARM FRONT LIFTS NORTHWARD. A SURFACE WARM FRONT WAS LOCATED FROM NEAR TUSCALOOSA TO AUBURN. AN UPPER LEVEL SHORT WAVE TROF OVER NORTHWEST ARKANSAS WILL TRACK SOUTHEAST TODAY AND PROVIDE LIFT FOR MORE ORGANIZED STORMS. WARM FRONT CURRENTLY LIFTING NORTH OF BHM AND EET.
835 PM EDT TUE MAR 31 2015 HIGH PRESSURE BUILDS IN TONIGHT BEHIND AN EXITING COLD FRONT. HIGH PRESSURE WEDNESDAY.