Aikyam-Lab/Synoptic-Bench huggingface dataset:
557 PM EST SAT FEB 14 2015 AN ARCTIC COLD FRONT WILL BRING BITTERLY COLD TEMPERATURES AND WIND CHILLS TO THE REGION THROUGH THE START OF THE WEEK. WILL BE CANCELING THE WINTER WEATHER ADVISORY FOR ALL LOCATIONS EXCEPT THE RIDGES. STEEP LOW LEVEL LAPSE RATES AND INSTABILITY FROM THE DIGGING UPPER TROUGH HAS PROVIDED FOR 1 INCH AN HOUR RATES AND NEAR ZERO VISIBILITY WITH THIS LINE. THE STRENGTH OF THE COLD FRONT WILL PROVIDE FOR THE COLDEST NIGHT THUS FAR THIS WINTER AND WITH A TIGHTENING SURFACE PRESSURE GRADIENT BETWEEN THE STRENGTHENING COASTAL LOW TO THE EAST AND THE HIGH TO THE WEST. ALREADY FRIGID TEMPERATURES WILL FURTHER PLUMMET AFTER NIGHTFALL AS THE HIGH SHIFTS EASTWARD AND WIND DIMINISHES.
951 PM EST SAT FEB 14 2015 AN ARCTIC HIGH PRESSURE SYSTEM WILL BUILD INTO THE AREA FOR SUNDAY. HIGH PRESSURE WILL ALLOW FOR DRY CONDITIONS ACROSS THE AREA FOR SUNDAY AND INTO MOST OF SUNDAY NIGHT.
844 PM CST SAT FEB 14 2015 COLD FRONT HAS MOVED ACROSS APPROXIMATELY THE NORTHERN HALF OF THE FA. /ISSUED 558 PM CST SAT FEB 14 2015/ A COLD FRONT WILL MOVE ACROSS THE SOUTHERN HALF OF OKLAHOMA THIS EVENING BRINGING GUSTY NORTHEAST WINDS.
625 PM CST SAT FEB 14 2015 COLD CANADIAN HIGH PRESSURE ACROSS THE SOUTHERN CANADIAN PLAINS INTO NORTH CENTRAL US. A STRONG BACKDOOR COLD FRONT HAS PUSHED SOUTHWEST ACROSS THE AREA TODAY. A MAJOR LOW PRESSURE SYSTEM IS IMPACTING THE EASTERN CONUS. THE COLD FRONT WILL STALL ALONG THE FRONT RANGE THIS EVENING. MEANWHILE CANADIAN HIGH PRESSURE DRIFTS SOUTHEAST TOWARDS THE GREAT LAKES. WHERE THE LOWER STRATUS PERSISTS ACROSS THE WEST. TOWARDS MORNING THE COLD FRONT WILL MODIFY INTO A WARM FRONT AND PUSH EAST AS THE HIGH CONTINUES TO DRIFT ACROSS THE GREAT LAKES. AS THE FRONT PUSHES EAST EXPECT A PUSH BACK OF THE LOWER STRATUS TO EAST.
A RIDGE IN PLACE ALONG THE WEST COAST TODAY WILL CONTINUE TO STRENGTHEN. BY THIS TIME TOMORROW THE RIDGE AXIS WILL EXTEND WELL NORTH THROUGH ALASKA. TEMPERATURES WILL COOL SLIGHTLY BY MIDWEEK AS THE RIDGE RETROGRADES JUST OFF THE COAST AND PARTIALLY FLATTENS. GLOBAL MODELS ARE FAIRLY CONSISTENT IN MAINTAINING THE RIDGING PATTERN WELL INTO WEEK TWO WITH JUST MINOR EBBS AND FLOWS TO THE AMPLIFICATION. KSFO BRIDGE APPROACH.
ARCTIC COLD FRONT WILL SWEEP SOUTH ACROSS THE REGION TONIGHT BRINGING ANOTHER SHOT OF COLD/DRY AIR. THIS CONGLOMERATION WILL THEN RAPIDLY MOVE EAST WITH MOISTURE SREADING ATOP THE LOW LEVEL DRY AIR BY SUNDAY NIGHT. BUT DO EXPECT TO SEE A MIX OF RAIN/FREEZING RAIN/SLEET BY MIDNIGHT ACROSS THE NW THEN SPREADING EAST TOWARD DAWN ALONG THE HWY 82 CORRIDOR.
TEMPERATURE FORECAST LOOKS GOOD AS TEMPS HAVE RISEN IN THE PAST FEW HOURS WITH PASSAGE OF INVERTED TROUGH. FURTHER SOUTHWEST IN AND AROUND THE LOWER MISSOURI BREAKS TEMPS WILL BE CONSIDERABLY MILDER IN THE LOWER 30S.
THE HIGHER WINDS ON THE BAY AND GULF SIDE WATERS IS DUE TO THE DENSITY CURRENT OFF THE MAINLAND DUE TO COLD AIR DRAINING OVER THE WARMER WATERS. WINDS OVERNIGHT WILL BE ADJUSTED SLIGHTLY TO SHOW THE LOWER WINDS ACROSS THE COASTAL WATERS.
404 PM CST Sat Feb 14 2015 A strong cold front passed through early Saturday and continued to surge south with strong cold advection and dry advection into the local forecast area. This will keep low temperatures a bit warmer than they would be with calm winds, but still quite cold in the 5-10 range.
ANOTHER DRY COLD FRONT IS FORECAST TO MOVE THROUGH THE FORECAST AREA ON SUNDAY TURNING WINDS BACK TO NORTHERLY. A COLD FRONT WILL SWEEP THROUGH THE COASTAL WATERS ON SUNDAY. HIGH PRESSURE BUILDS BACK IN THROUGH EARLY MON WITH GENERALLY BENIGN WINDS AND SEAS. AN AREA OF LOW PRESSURE WILL TRACK ALONG THE GULF COAST MON THROUGH EARLY TUE WITH INCREASINGLY ROBUST WINDS AND SEAS THAT WILL LIKELY REACH SCA CRITERIA. A COLD FRONT TRAILING SOUTHWESTWARD FROM THE LOW CROSSES THE EAST GULF LATE TUE OR EARLY WED. STRONG HIGH PRESSURE BUILDS INTO THE GULF FROM THE NORTH FOR THE LAST HALF OF THE WEEK.
CHATTANOOGA AIRPORT, TN 16 31 23 32 / 10 10 50 90 KNOXVILLE MCGHEE TYSON AIRPORT, TN 15 28 19 30 / 10 0 50 80 OAK RIDGE, TN 15 29 18 30 / 10 10 50 80 TRI CITIES AIRPORT, TN 13 22 13 26 / 30 0 40 80 NC.
340 PM PST SAT FEB 14 2015 High pressure will dominate the weather through midweek delivering dry conditions and mild temperatures.
936 PM CST SAT FEB 14 2015 CURRENT FIRST PERIOD ELEMENTS IN GOOD SHAPE AS THE STRONG COLD FRONT HAS MOVED THROUGH ALL BY FAR SOUTHEAST OKLAHOMA.
1033 PM CDT SUN APR 12 2015 PRESENT OBS INDICATING COLD FRONT SITUATED THROUGH THE EASTERN JAMES RIVER VALLEY. ON MONDAY HIGH PRESSURE BUILDS INTO THE REGION. WINDS WILL BEGIN TO FALL OFF IN THE MID AND LATE AFTERNOON AS THE GRADIENT WEAKENS AS HIGH PRESSURE BUILDS IN.
WHILE SUBTLE DISTURBANCES TRANSLATE THROUGH THE WEST TO SOUTHWEST FLOW ALOFT DOWNSTREAM OF A SLOWLY EASTWARD MOVING UPPER TROF.
1051 PM MDT SUN APR 12 2015 THE WEAK COLD FRONT WAS THROUGH THE ENTIRE FORECAST AREA THIS AFTERNOON PRODUCING GUSTY WEST TO NORTHWEST WINDS.
THANKS TO A MOISTURE LOW LEVEL INFLOW AND A SERIES OF DISTURBANCES ALOFT ROUNDING THE BASE OF A CLOSED LOW OVER MEXICO. ANOTHER COLD FRONT WILL MOVE SOUTHEAST ACROSS THE AREA DURING THE DAY MONDAY AND MONDAY NIGHT. BECOMING SOUTHWEST MONDAY AFTERNOON JUST PRIOR TO THE PASSAGE OF THE COLD FRONT.
757 PM EDT SUN APR 12 2015 A COLD FRONT WILL MOVE ACROSS THE FORECAST AREA ON MONDAY. HIGH PRESSURE AND FAIR WEATHER WILL FOLLOW AND CONTINUE THROUGH MID WEEK. NO CHANGE TO THE LOWS AT THIS TIME. THEN FROM THE APPROACHING COLD FRONT ACROSS THE CENTRAL PLAINS. INSULATION FROM CLOUDS AND THE SOUTHERLY FLOW NOW THAT THE HIGH HAS SHIFTED EAST WILL MODERATE TEMPS OVERNIGHT. INCREASED THE HIGHS A LITTLE. FORECAST QUESTION OF THE DAY IS THE TIMING OF THE COLD FRONT THROUGH THE AREA ON MONDAY. AFTER THAT MODELS IN VERY GOOD AGREEMENT WITH LARGE AREA OF HIGH PRESSURE MOVING SLOWLY ACROSS THE GREAT LAKES THROUGH THE FIRST HALF OF THE WORK WEEK.
1143 PM CDT SUN APR 12 2015 LATEST MSAS SFC ANALYSIS DEPICTING A TROF/COLD FRONT WITH THE LEADING EDGE OF THE BNDRY FROM ABOUT NW MN TO THE NEB PANHANDLE WITH MLCAPES AROUND 1000J/KG.
1116 PM EDT SUN APR 12 2015 HIGH PRESSURE WILL CONTINUE TO MOVE OFF THE COAST AND A COLD FRONT WILL APPROACH FROM THE WEST.
LOW PRESSURE IS LOCATED ALONG THE KANSAS/COLORADO BORDER. THERE MAY BE A CHANCE FOR THUNDERSTORM DEVELOPMENT AHEAD OF THE COLD FRONT IN NORTON. COOL HIGH PRESSURE SLIDES IN FROM THE NORTHWEST. WINDS WILL WEAKEN AS THE CENTER OF THE HIGH MOVES OVER. COOLER TEMPERATURES ARE FORECAST WITH LOWS TONIGHT FALLING INTO THE MID 30S TO LOW 40S AND HIGHS TOMORROW CLIMBING INTO THE MID 60S TO NEAR 70 IN A FEW LOCATIONS.
AN AREA OF LOW PRESSURE WILL BE MOVING AWAY FROM THE AREA TONIGHT WITH GRADUAL CLEARING.
ADDED SOME PATCHY FOG AS WELL GIVEN UPDATED TEMP/DEWPT TRENDS WITH MUCH OF CENTRAL GA COOLER THAN FCST FROM LATE AFTERNOON/EVENING RAIN.
THE SUBTROPICAL RIDGE WL BEGIN TO BECOME ESTABLISHED OVER CENTRAL FL. HIGH PRESSURE WILL SHIFT OFFSHORE THE EASTERN SEABOARD EARLY IN THE WEEK AHEAD OF THE NEXT COLD FRONT. BUT IT WILL CAUSE THE ATLANTIC HIGH PRESSURE RIDGE AXIS TO SETTLE INTO CENTRAL FLORIDA BY TUE AND THE SOUTHERN PENINSULA WED. WITH RIDGE SUPPRESSED TO THE SOUTH. HIGH PRESSURE WILL PUSH OFFSHORE THE MID ATLANTIC COAST AND WINDS WILL VEER TO THE SOUTH ON TUE AT 10-15 KNOTS.
1257 AM EDT MON APR 13 2015 HIGH PRESSURE WILL CONTINUE TO MOVE OFF THE COAST AND A COLD FRONT WILL APPROACH FROM THE WEST.
SOME OF THE HIGH CLOUDS OVER SOUTH CENTRAL COLORADO SHOULD FILTER OVER AREA DURING THE OVERNIGHT. LOW PRESSURE IS LOCATED ALONG THE KANSAS/COLORADO BORDER. THERE MAY BE A CHANCE FOR THUNDERSTORM DEVELOPMENT AHEAD OF THE COLD FRONT IN NORTON. COOL HIGH PRESSURE SLIDES IN FROM THE NORTHWEST. WINDS WILL WEAKEN AS THE CENTER OF THE HIGH MOVES OVER. COOLER TEMPERATURES ARE FORECAST WITH LOWS TONIGHT FALLING INTO THE MID 30S TO LOW 40S AND HIGHS TOMORROW CLIMBING INTO THE MID 60S TO NEAR 70 IN A FEW LOCATIONS.
AS MEAN LOW MOVES ACROSS GREAT LAKES AND BROKEN FRONTAL BOUNDARY SAGS SOUTH THRU PAH FA TO INVERTED TROF-LIKE BOUNDARY EXTENDING ACROSS SRN PLAINS STATES INTO TX. WHERE MOISTURE OVERRUNS/ELEVATED INSTABILITY KEEPS PCPN/THUNDER CHANCES IN FORECAST DESPITE DRIER AIR TRYING TO WORK IN FROM HIGH PRESSURE TO THE NORTH.
A SHIFT TO NORTHEAST WINDS WITH THE PASSAGE OF A WEAK BACKDOOR COLD FRONT HAS CAUSED RH VALUES AND DEWPOINTS TO RISE. UPPER TROUGH PASSING OVER NORTHEASTERN COLORADO AT THIS HOUR WITH THE COLD FRONT APPROACHING THE NORTHERN COLORADO BORDER. WITH WARMER READINGS IN THE MOUNTAINS.
A COLD FRONT WILL SHIFT THE WINDS FROM THE SOUTH AND WEST 5 TO 15 KNOTS TO THE NORTHEAST AND NORTH AT ALL THREE TAF SITES AFTER 04Z TO 08Z MONDAY INCREASING TO AROUND 15 TO 25 KNOTS WITH HIGHER GUSTS.
521 PM MDT SUN APR 12 2015 THE WEAK COLD FRONT WAS THROUGH THE ENTIRE FORECAST AREA THIS AFTERNOON PRODUCING GUSTY WEST TO NORTHWEST WINDS.
THE HIGHEST RADAR REPORTED RAINFALL AMOUNTS WERE IN PORTIONS OF POLK AND HIGHLANDS COUNTY WHICH SAW AROUND 2-3 INCHES IN THE STRONGER STORMS. HIGH PRESSURE WILL CONTINUE TO INFLUENCE THE WATERS OVER THE NEXT SEVERAL DAYS.
1028 PM EDT SUN APR 12 2015 HIGH PRESSURE WILL KEEP DRY WEATHER ACROSS THE AREA TONIGHT. A COLD FRONT WILL BRING SOME SHOWERS AND POSSIBLY THUNDERSTORMS FOR MONDAY.
MODELS STILL DEPICT A STALLED FRONTAL BOUNDARY ACROSS NORTHERN FLORIDA TO LIFTING BACK TO THE NORTH AS A WARM FRONT INTO MONDAY. THIS WILL ALLOW SLIGHTLY STRONGER UPPER RIDGING TO BUILD INTO SOUTH FLORIDA FROM THE SOUTH KEEPING MOST OF THE EXPECTED AFTERNOON CONVECTION ACROSS THE LAKE OKEECHOBEE AREA MONDAY AFTERNOON.
SCATTERED TO BROKEN MID/HIGH CLOUDS WILL GIVE WAY TO LIFR-MVFR CONDITIONS OVERNIGHT TONIGHT AND MONDAY MORNING AS A COLD FRONT PUSHES THROUGH THE REGION. THUNDERSTORM CHANCES WILL ALSO BE POSSIBLE LATE THIS EVENING ACROSS THE NORTH AND SPREAD OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS TONIGHT AND MONDAY WITH THE COLD FRONT. BEHIND THE COLD FRONT. /ISSUED 316 PM CDT SUN APR 12 2015/ AREA OF RAIN THAT SKIRTED THE NORTHERN PART OF THE AREA EARLIER TODAY HAS DISSIPATED, RAIN AND THUNDER CHANCES WILL MARKEDLY INCREASE AREAWIDE AFTER MIDNIGHT AS THE NEXT UPPER SYSTEM AND COLD FRONT IMPACT THE SOUTHERN PLAINS.
THIS EVENING THROUGH MONDAY NIGHT CURRENT SURFACE ANALYSIS SHOWS COLD FRONT NOW EAST OF THE CWA.
A WARM FRONT WAS ANALYZED TO BE EXTENDING SOUTHEAST FROM NEAR MERIDIAN MISSISSIPPI THROUGH DOTHAN ALABAMA. THE MODELS ARE IN FAIR AGREEMENT INVOLVING MOVING THE SURFACE WARM FRONT NORTHWARD OVERNIGHT INTO THE FORECAST AREA BY AROUND 06Z TONIGHT. WILL CONTINUE WITH INCREASING CHANCES OF SHRA AND SOME TSRA ALONG AND IN VICINITY OF THE WARM FRONT OVERNIGHT ACROSS THE FORECAST AREA.
Light southerly winds tonight will veer to the southwest ahead of a cold front that is forecast to reach KABI near or just after 18z Monday. With strong lift ahead an upper low near El Paso, the short range models, including the Texas Tech WRF and the HRRR indicate the line of storms to move into Crockett County 5-6 PM. This looks good as GFS 0-6 KM shear was 20-35 KTS with the highest values along the I-10 corridor. West Central is somewhat dry-slotted Monday, at least south of the I-20 corridor as the upper low moves slowly through. A weak cold front will push through the Big Country late morning and afternoon, bringing the the best chances of storms to the north.
955 PM EDT SUN APR 12 2015 A COLD FRONT WILL MOVE ACROSS THE FORECAST AREA ON MONDAY. HIGH PRESSURE AND FAIR WEATHER WILL FOLLOW AND CONTINUE THROUGH MID WEEK. INCREASED THE HIGHS A LITTLE ALSO. FORECAST QUESTION OF THE DAY IS THE TIMING OF THE COLD FRONT THROUGH THE AREA ON MONDAY. AFTER THAT MODELS IN VERY GOOD AGREEMENT WITH LARGE AREA OF HIGH PRESSURE MOVING SLOWLY ACROSS THE GREAT LAKES THROUGH THE FIRST HALF OF THE WORK WEEK.
HIGH PRESSURE CENTERED ACROSS THE MIDDLE ATLANTIC REGION THIS MORNING WILL MOVE OFF THE COAST THIS AFTERNOON. WEAK UPPER RIDGING OVER THE REGION WILL SHIFT OFF THE COAST MONDAY AS A SOUTHERN STREAM TROUGH OVER NORTHERN MEXICO LIFTS NORTHEASTWARD OVER THE PLAINS.
825 PM MST SUN APR 12 2015 LOW PRESSURE WILL EXIT THE REGION TONIGHT AS WEAK HIGH PRESSURE SETTLES IN FROM THE WEST ALLOWING FOR CONTINUED DRY CONDITIONS AND WARMING TEMPERATURES.
833 PM EDT SUN APR 12 2015 HIGH PRESSURE WILL PROVIDE DRY WEATHER TONIGHT. A COLD FRONT IS EXPECTED FOR LATE MONDAY AND MONDAY NIGHT. AFTER HIGH PRESSURE BRINGS A MAINLY CLEAR EVENING. WARM ADVECTION AND A WEAK MID LEVEL TROUGH IS PROGGED TO BRING AN INCREASE IN MID LEVEL CLOUDS OVERNIGHT.
AFTER THIS MOVES EAST BY EARLY THIS EVENING FOCUS TURNS TO A COLD FRONT PUSHING EAST ACROSS MINNESOTA AND IOWA. MOST OF THE AREA SHOULD SEE FULL SUNSHINE WITH TEMPERATURES CLIMBING INTO THE LOWER 60S.
A LOW PRESSURE SYSTEM OVER THE EASTERN PACIFIC WILL REACH WESTERN BRITISH COLUMBIA BY EARLY MONDAY SENDING A TRAILING COLD FRONT SOUTHEAST INTO THE PACIFIC NORTHWEST THEN NORTHERN CALIFORNIA BY MONDAY NIGHT.
652 PM CDT SUN APR 12 2015 PRESENT OBS INDICATING COLD FRONT SITUATED THROUGH THE EASTERN JAMES RIVER VALLEY. ON MONDAY HIGH PRESSURE BUILDS INTO THE REGION. WINDS WILL BEGIN TO FALL OFF IN THE MID AND LATE AFTERNOON AS THE GRADIENT WEAKENS AS HIGH PRESSURE BUILDS IN.
HIGH PRESSURE OVER THE MIDDLE ATLANTIS STATES WILL CONTINUE TO DOMINATE INDIANA/S WEATHER TONIGHT AND PROVIDE DRY AND SLIGHTLY WARMER WEATHER TONIGHT. A COLD FRONT OVER THE WESTERN GREAT PLAINS WILL PUSH EAST INTO THE OHIO VALLEY ON MONDAY. AND HIGH PRESSURE WILL RETURN TO CENTRAL INDIANA. WARMER AND MORE MOIST AIR IS EXPECTED TO ARRIVE LATE THIS WEEK. DRY WEATHER WILL BE EXPECTED TONIGHT ACROSS CENTRAL INDIANA AS THE HIGH PRESSURE SYSTEM SLOWLY DEPARTS. WARM AIR ADVECTION WILL CONTINUE ON THE BACK SIDE OF THE HIGH TONIGHT ALSO. WILL TREND LOWS WARMER THAN MAVMOS. ACTIVE WEATHER DAY EXPECTED ON MONDAY AS A COLD FRONT IS EXPECTED TO CROSS THE STATE.
18Z SURFACE ANALYSIS PLACES COLD FRONT EXTENDING FROM NORTHWEST MN THROUGH NORTHWEST KS. THEN EXPECT DECREASING CLOUDS WITH BREEZY/WINDY CONDITIONS OF 15 TO 30 MPH FROM NW IN DEEP MIXING AND STRENGTHENING PRESSURE GRADIENT AHEAD OF INCOMING HIGH PRESSURE. HIGH PRESSURE WILL SETTLE INTO THE DVN CWA ALLOWING FOR IDEAL RADIATIONAL COOLING CONDITIONS.
HIGH PRESSURE OVER THE MIDDLE ATLANTIS STATES WILL CONTINUE TO DOMINATE INDIANA/S WEATHER TONIGHT AND PROVIDE DRY AND SLIGHTLY WARMER WEATHER TONIGHT. A COLD FRONT OVER THE WESTERN GREAT PLAINS WILL PUSH EAST INTO THE OHIO VALLEY ON MONDAY. AND HIGH PRESSURE WILL RETURN TO CENTRAL INDIANA. WARMER AND MORE MOIST AIR IS EXPECTED TO ARRIVE LATE THIS WEEK. SURFACE ANALYSIS EARLY THIS AFTERNOON SHOWED LARGE HIGH PRESSURE IN PLACE OVER THE MIDDLE ATLANTIC STATES. A COLD FRONT WAS FOUND ACROSS NEBRASKA AND WESTERN KANSAS. DRY WEATHER WILL BE EXPECTED TONIGHT ACROSS CENTRAL INDIANA AS THE HIGH PRESSURE SYSTEM SLOWLY DEPARTS. WARM AIR ADVECTION WILL CONTINUE ON THE BACK SIDE OF THE HIGH TONIGHT ALSO. WILL TREND LOWS WARMER THAN MAVMOS. ACTIVE WEATHER DAY EXPECTED ON MONDAY AS A COLD FRONT IS EXPECTED TO CROSS THE STATE.
OR WITH THE RAIN/STORMS THAT ACCOMPANY A COLD FRONT THAT WILL MOVE QUICKLY SOUTHEAST ACROSS THE AREA LATER TONIGHT/EARLY MONDAY. A COLD FRONT WILL WORK SOUTHEAST ACROSS THE AREA OVERNIGHT INTO MONDAY MORNING WITH STRONG GUSTY WINDS DEVELOPING AREA-WIDE BEHIND THE FRONT.
WITH TD IN THE LOWER 50S AND H850 TD PLUME MAX OF +5C TO +10C ADVECTING NORTHEAST INTO THE STATE. WITH H850 JET AXIS OVER EASTERN IOWA WHILE UPPER LEVEL TROUGH LAGS THE BEST LOW LEVEL WIND MAXES BY 200 MILES OR SO DURING THE EVENING. OVERNIGHT MINS WILL FALL TO NEAR 40 NORTHWEST WITH UPPER 40S TO NEAR 50 SOUTHEAST ON THE HEELS OF THE COLD FRONT MOVING SOUTHEAST TONIGHT. THE FRONTAL BOUNDARY AND UPPER TROUGH SHOULD BE THROUGH THE REGION BY EARLY MONDAY WITH ANY PRECIP THREAT ENDING BEFORE THEN.
A warm front leading that system lifts north tonight into Monday, leading to a mild but mostly cloudy Monday.
857 PM EDT SUN APR 12 2015 HIGH PRESSURE WILL CONTINUE TO MOVE OFF THE COAST AND A COLD FRONT WILL APPROACH FROM THE WEST.
This lead to temporary clearing skies along the Interstate 70 corridor, a stable airmass lingering, and a hindrance on additional convection forming until the cold front arrives this evening. The cold front is expected to enter the Topeka area around midnight.
702 PM EDT SUN APR 12 2015 CONDITIONS WILL BE DETERIORATING LATER TONIGHT AS A LOW PRESSURE SYSTEM TRACKS CLOSER TO THE AREA.
THE REGION WILL BE UNDER AN UPPER LEVEL HIGH PRESSURE RIDGE TONIGHT. THE LOW LEVEL AIR MASS REMAINS DRY, AND WITH LIGHT WINDS, WILL SEE GOOD OVERNIGHT COOLING AGAIN. EXPECT ONLY POCKETS OF LOW TEMPS AT OR BELOW FREEZING ACROSS THE COLUMBIA BASIN, THE KITTITAS AND YAKIMA VALLEYS AND THE JOHN DAY BASIN DUE TO THE HIGH CLOUDINESS AND THE SLIGHTLY WARMER HIGH TEMPS TODAY. LATEST DATA CONTINUES TO INDICATE A STRONG COLD FRONT MOVING THROUGH THE REGION MONDAY NIGHT. A RIDGE OF HIGH PRESSURE WILL DOMINATE THE WEATHER PATTERN THROUGH THE END OF THE WEEK.
Temperatures are cooler across central Missouri this afternoon because of exiting showers and storms along with more cloud cover. temperatures are warm in the lower to middle 70s. this evening will be relatively quiet as we watch an advancing cold front up in southern Nebraska starts heading southeastward. Temperatures will be slightly cooler Monday afternoon in the middle to upper 60s.
745 PM EDT SUN APR 12 2015 HIGH PRESSURE WILL CONTINUE TO MOVE OFF THE COAST AND A COLD FRONT WILL APPROACH FROM THE WEST.
CHATTANOOGA AIRPORT, TN 60 72 63 75 / 40 80 80 60 KNOXVILLE MCGHEE TYSON AIRPORT, TN 58 72 60 73 / 20 80 80 60 OAK RIDGE, TN 57 71 60 70 / 20 80 80 60 TRI CITIES AIRPORT, TN 50 71 58 70 / 10 60 80 60.
A COLD FRONT IS EXPECTED TO REACH THE MID STATE BY THE END OF THE TAF PD. CIGS AND VIS WILL FALL TO MVFR LEVELS BY LATE MORNING AND REMAIN THERE THROUGH THE END OF THE FORECAST PERIOD FOR ALL SITES AS SHOWERS AND THUNDERSTORMS CONTINUE AHEAD OF AN APPROACHING COLD FRONT.
Once this feature passes, there will likely be a several hour lull in precip chances before the Rockies wave and its associated cold front approach from the west late tonight. Then as high pressure builds into the region behind this front, dry weather is expected through Tue night. Cold front that will bring a more widespread rainfall to the TAF sites late tonight thru Monday morning was located over far northwest Iowa.
A DEEP UPPER LEVEL TROUGH IS PROGRESSING EASTWARD THROUGH THE NORTHERN PLAINS. A COLD FRONT IS CURRENTLY LOCATED IN FAR WESTERN MN. COOLER TEMPERATURES ARE EXPECTED ON MONDAY WITH HIGHS GENERALLY IN THE LOWER 60S BEHIND THE COLD FRONT. THE GULF IS MOSTLY CLOSED OFF FROM THE UPPER MISSISSIPPI RIVER VALLEY AND THE MULTITUDE OF WAVES RIDING NEAR THE NORTHERN CONUS AND SOUTHERN CANADIAN BORDERS CAN ONLY MANAGE TO DRAG MAINLY DRY COLD FRONTS THROUGH MN/WI.
THAT WILL CHANGE BY LATER TONIGHT AS THE CWA BECOMES SANDWICHED BETWEEN A WARM FRONT TO THE SOUTH AND A COLD FRONT TO THE NORTHWEST. THE WARM FRONT IS CURRENTLY STRETCHED ACROSS CENTRAL MISSISSIPPI AND IS EXPECTED TO SURGE NORTHWARD TONIGHT. THE COLD FRONT IS CURRENTLY LOCATED ACROSS NEBRASKA AND KANSAS. EXPECT WIDESPREAD SHOWERS AND THUNDERSTORMS ON MONDAY AS THE WARM FRONT AND COLD FRONT COLLIDE OVER THE MIDSOUTH. THE NOW LONE COLD FRONT WILL BEGIN TO SLIDE SOUTHEAST.
As for temps, have generally trended twd the cooler guidance as heating today was hampered across much of the CWA by convective debris. The upper low currently over nrn Mexico is progd to open and lift newd, lifting a wrmfnt thru the area on Wed. SHRA/TSRA associated with an approaching cold front should develop and spread across the region later tonight, but there are questions about the precipitation coverage. Winds will briefly turn southwesterly ahead of the cold front, then turn northerly after fropa. Precipitation chances are tied to a slow-moving cold front which is expected to reach the St.
731 PM EDT SUN APR 12 2015 HIGH PRESSURE EXITS EAST TONIGHT. A COLD FRONT CROSSES MONDAY NIGHT.
942 PM CDT SUN APR 12 2015 WARM FRONTAL BOUNDARY CURRENTLY OVER CENTRAL ARKANSAS WILL CONTINUE TO PUSH NORTHWARD TONIGHT.
AS HIGH PRESSURE MOVES OFF THE EAST COAST. A SOUTHWEST AIR FLOW WILL BRING WARMER TEMPERATURES.
1004 PM EDT SUN APR 12 2015 HIGH PRESSURE SHIFTS OFFSHORE ON MONDAY WITH WARMER AIR CONTINUING TO MOVE NORTHWARD INTO OUR REGION.
HRRR and NAM generate scattered convection along the NE portion of the cold front.
ADDITIONAL CONVECTION ANTICIAPTED FOR MONDAY/NONDAY AS THE UPPER LOW REMAINS WEST OF/NEAR THE CWA/MSA AND ABOVE AVG PWAT VALUES/HIGH CAPES OCCUR (NAM DETERMINISTIC. ) ADDITIONAL SFC FORCING FROM A FRONTAL BOUNDARY/SFC WAVE (IN RESPONSE TO AN UPPER SYSTEM PROGD TO MOVE ACRS THE CNTRL/NRN PLAINS AND ALSO A WAVE FORMING ON THIS BOUNDARY IN RESPONSE TO THE UPPER LOW TO THE WEST) APPROACHING THE CWA FROM THE NW/N MONDAY NIGHT MAY INCREASE THE CHANCE FOR FLASH FLOODING OVER PORTIONS OF THE CWA.
CIGS AND VIS WILL FALL TO MVFR LEVELS BY LATE MORNING AND REMAIN THERE THROUGH THE END OF THE FORECAST PERIOD FOR ALL SITES AS SHOWERS AND THUNDERSTORMS CONTINUE AHEAD OF AN APPROACHING COLD FRONT.
749 PM EDT SUN APR 12 2015 HIGH PRESSURE WILL KEEP DRY WEATHER ACROSS THE AREA TONIGHT. A COLD FRONT WILL BRING SOME SHOWERS AND POSSIBLY THUNDERSTORMS FOR MONDAY.
SHOWERS AND THUNDERSTORMS ALONG WITH LIFR TO MVFR CONDITIONS ARE EXPECTED TO PUSH INTO EASTERN OKLAHOMA AND NORTHWEST ARKANSAS OVERNIGHT/EARLY MONDAY MORNING AS A COLD FRONT MOVES THROUGH THE REGION.
THE TROUGH PRODUCED SOME LIGHT RAIN/SNOW SHOWERS FROM EAST CENTRAL WY INTO SOUTHWEST SD DURING THE LATE MORNING AND EARLY AFTERNOON. A COLD FRONT MOVED THROUGH THE CWA THIS MORNING.
AN ISOLATED WATERSPOUT OR TORNADO COULD OCCUR IN THE VICINITY OF THE LOW LEVEL BOUNDARY. THESE WEAK LAPSE RATES COMBINED WITH HIGH FREEZING LEVELS WILL KEEP HAIL FORMATION AT BAY.
ALSO KEPT THE MENTION OF HEAVY RAINFALL POSSIBLE GIVEN THE HIGH PW/S IN PLACE.
THE HIGH IS EXPECTED TO SHIFT EAST TOMORROW. THIS HAS KEPT TEMPS A LITTLE COOLER THAN EXPECTED ACRS SE TX WITH TEMPERATURES IN THE LOWER/MIDDLE 50S AS OF 3 PM. THE AREA REMAINS BETWEEN A TROF OVER THE E COAST AND RIDGING ACRS THE WRN STATES. SLY WINDS WILL DEVELOP WITH THE HIGH CNTRD EAST OF THE REGION.
THIS WAS MUCH WARMER THAN THE GFS/NAM BUFR SOUNDINGS AT DSM. DEWPOINTS IN THESE AREAS ARE IN THE LOW TO MID 30S SO EXPECT FOG OVER THE SNOW COVER INTO SAT MORNING TO SOME EXTENT. SURFACE TEMPS WILL LIKELY BE JUST SHY OF FREEZING THROUGH EARLY MORNING HOURS SO HAVE LIGHT FREEZING RAIN FOR PRECIP TYPE. BUT MORE LIKELY PRECIP TYPE THROUGH THIS EVENT WOULD BE LIGHT FREEZING RAIN. 07/00Z SOUTHERLY FLOW OVER THE STATE WITH WARM FRONT EXTENDING FROM NWRN SD INTO CENTRAL IL.
A BAND OF MID/HIGH LEVEL CLOUDS OVER UT WILL PUSH INTO OUR AREA THIS EVENING BUT SEEM TO BE THINNING AS THEY PUSH FARTHER INTO THE UPPER RIDGE OVER THE AREA. THE RIDGE FLATTENS TONIGHT AND SATURDAY AS A STORM CURRENTLY ALONG THE NRN CA AND PACNW COAST PUSHES INLAND ACROSS THE NRN ROCKIES. WARM ADVECTIVE CLOUDS INCREASE LATE TONIGHT AND SATURDAY MORNING WITH THE UPPER TROUGH PASSING SATURDAY AFTERNOON. TEMPS A LITTLE COOLER SAT WITH THE INCREASE IN CLOUDS. EXPECT THAT SOME LIGHT OROGRAPHIC SNOW MAY LINGER OVER THE NORTHERN DIVIDE INTO SUN IN THE NORTHWEST FLOW AHEAD OF THE RIDGE. THE RIDGE AXIS THEN WILL PASS SUN EVENING AS THE NEXT LOW PRESSURE TROUGH TAKES AIM ON THE PACIFIC NORTHWEST.
AN AREA OF LOW PRESSURE OFF THE WEST COAST IS PROVIDING STRONG WINDS TO THE EASTERN SIERRA AND PORTIONS OF THE SOUTHERN GREAT BASIN THIS EVENING.
VFR AND LIGHT S WINDS TONIGHT UNDER HIGH PRESSURE. ALTHOUGH SSW WINDS WILL INCREASE WITH GUSTS TO 20KT AS THE HIGH PRESSURE CENTER MOVES OFF TO THE EAST.
458 PM CST Fri Feb 6 2015 Main story in the near term will be the potential for fog to develop generally north of the Missouri River, where several inches to almost a foot of snow still remains; and much warmer temperatures moving into the region tomorrow. Advection fog is likely north of the MO river as warmer air continues to be transported northward over the snowpack. An upper level ridge will build over the region tomorrow with 850mb temps of 14-16 degrees. Steep lapse rates below 925mb will allow some of that warmer air to mix down to the surface, and with general southwesterly surface flow ahead of lee troughing on the High Plains, temperatures are expected to reach into the 60s to near 70 in areas without snow cover.