Aikyam-Lab/Synoptic-Bench huggingface dataset:
238 PM EDT SUN MAR 15 2015 DEEP LOW PRESSURE OFF THE COAST OF MAINE BROUGHT VERY GUSTY NORTHWEST WINDS AND COLDER TEMPERATURES TO THE REGION TODAY. A RIDGE OF HIGH PRESSURE WILL SLIDE EAST ACROSS PENNSYLVANIA TONIGHT AND EARLY MONDAY WITH CLEARING SKIES AND LIGHTER WIND. FOLLOWED BY THE PASSAGE OF ANOTHER COLD FRONT MONDAY NIGHT. TEMPERATURES WILL BE WELL BELOW NORMAL BEHIND THIS NEXT COLD FRONT.
327 PM EDT SUN MAR 15 2015 HIGH PRESSURE WILL DRIFT SOUTH TONIGHT ALLOWING FOR SLIGHTLY WARMER TEMPERATURES. RETURN FLOW AROUND THE DEPARTING HIGH AND A COLD FRONT DROPPING SOUTHEAST TO THE GREAT LAKES WILL BRING ABOVE NORMAL TEMPERATURES.
315 PM EDT SUN MAR 15 2015 OVERALL A QUIET SHORT TERM FORECAST AS HIGH PRESSURE DOMINATES THE REGION.
255 PM MDT SUN MAR 15 2015 HIGH PRESSURE OVER THE REGION WILL BE SHIFTING EAST OUT INTO THE PLAINS TONIGHT WITH DRY AND WARM SOUTHWEST FLOW SETTING UP. THE LONG WAVE RIDGE OVER THE REGION CONTINUES TO BREAK DOWN AS A PACIFIC TROUGH MOVES INLAND FORCING ITS AXIS EAST OF THE DIVIDE.
HOLES IN THE HIGHER CIRRUS HAVE ALLOWED FOR THE EXPECTED WARM UP INTO THE LOW TO MID 70S NEAR THE U.
IT LOOKS LIKE CSV COULD SEE DRIER AIR IN THE LOWER LEVELS AND WILL LEAVE FOG OUT OF THE TAF AT THAT SITE FOR NOW.
523 PM EST SAT FEB 28 2015 CANADIAN HIGH PRESSURE WILL WEDGE INTO THE AREA FROM THE NORTH THROUGH SUNDAY NIGHT.
With freezing drizzle occurring, extended the winter weather advisory for this area through 9 AM. Areas of freezing drizzle, drizzle, and fog will continue as well. As temperatures remain at or below freezing across the northern half of the forecast area, freezing drizzle will once again be possible. Given the possibility of light freezing drizzle and the likelihood of refreezing on area roadways after sunset, the Winter Weather Advisory was expanded until Sunday morning for the Big Country, much of the Concho Valley and Heartland. Forecast highs were trended down and will range from the low to mid 40s across the Big Country, to the mid to upper 50s across the Interstate 10 corridor. Temperatures will slowly continue an upward trend in response to another cold front approaching.
Areas of freezing drizzle, drizzle, and fog will continue as well. As temperatures remain at or below freezing across the northern half of the forecast area, freezing drizzle will once again be possible. Given the possibility of light freezing drizzle and the likelihood of refreezing on area roadways after sunset, the Winter Weather Advisory was expanded until Sunday morning for the Big Country, much of the Concho Valley and Heartland. Forecast highs were trended down and will range from the low to mid 40s across the Big Country, to the mid to upper 50s across the Interstate 10 corridor. Temperatures will slowly continue an upward trend in response to another cold front approaching.
958 PM EST SAT FEB 28 2015 LOW PRESSURE WILL SPREAD SNOW AND RAIN OVER THE UPPER OHIO REGION ON SUNDAY. WARMER.
AN UPPER LEVEL TROUGH WILL CONTINUE TO BRING SCATTERED SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS SOUTH OF CAPE MENDOCINO INTO THE EARLY EVENING. HIGH PRESSURE WILL BRING DRY WEATHER FOR SUNDAY.
/ISSUED 333 PM CST SAT FEB 28 2015/ AFTERNOON SFC ANALYSIS SHOWS HIGH PRESSURE CENTERED OVER THE GREAT LAKES PROVIDING A MORE ERLY TO ESERLY LOW-LEVEL FLOW OVER THE FORECAST AREA TODAY. WEAK COASTAL TROF NOTED IN SFC ANALYSIS WILL GRADUALLY ADVANCE UP THE COAST INTO TOMORROW WHICH SHOULD FURTHER INCREASE POPS.
THIS IS IN ASSOCIATION WITH THE BACK EDGE OF AN ELONGATED UPPER TROUGH OVER THE GREAT BASIN.
RADAR SUGGESTS POSSIBLY STILL A COUPLE FLURRIES OUT OVER THE PRAIRIE COTEAU WHERE SURFACE COLD FRONT IS CURRENTLY LOCATED. AN UPPER LEVEL TROUGH OF LOW PRESSURE WILL TRACK ACROSS THE NORTHERN PLAINS ON SUNDAY.
SOME LIGHT FREEZING DRIZZLE WILL BE POSSIBLE WITH THE BEST CHANCE AT GUY SO HAVE RETAINED THE MENTION THERE. WILL WATCH THE TRENDS AND SEE IF FREEZING DRIZZLE WILL NEED TO BE MENTIONED AT DHT AND AMA. /ISSUED 429 PM CST SAT FEB 28 2015/ THE NEXT TO LAST IN A SERIES OF STORMS SYSTEMS SLATED TO IMPACT THE TX AND OK PNHDLS WEATHER IS A CLOSED LOW OFF THE SRN CA COAST.
IFR OR LIFR CONDITIONS WILL BE COMMON THROUGH THE FORECAST PERIOD WITH WIDESPREAD FREEZING DRIZZLE. THE FREEZING DRIZLLE MAY CHANGE TO DRIZZLE AT SOME LOCATIONS DURING THE DAY SUNDAY AS TEMPERATURES SNEAK ABOVE FREEZING. WARM NOSE ALOFT HAS SURGED THROUGH SOUTHEAST OKLAHOMA INTO NORTHWEST ARKANSAS THIS AFTERNOON WITH SNOW QUICKLY TRANSITIONING TO FREEZING RAIN PER OBSERVATIONS/DUAL POL RADAR TRENDS. AREAS OF FREEZING RAIN WILL LIKELY CONTINUE ACROSS THE AREA OVERNIGHT WITH THE HEAVIEST AMOUNTS ACROSS SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS WITH SOME LIGHT ICE ACCUMULATIONS LIKELY. TEMPERATURES ACROSS FAR SOUTHEAST OKLAHOMA ARE A LITTLE TRICKY AS SOME AREAS MAY RISE JUST ABOVE FREEZING LATER THIS AFTERNOON OR EARLY EVENING. ANY AREAS OF FREEZING DRIZZLE/FLURRIES THAT REMAIN SUNDAY MORNING WILL LIKELY TRANSITION TO ALL LIQUID FROM SOUTH TO NORTH AS TEMPERATURES WARM ABOVE FREEZING.
429 PM CST SAT FEB 28 2015 THE NEXT TO LAST IN A SERIES OF STORMS SYSTEMS SLATED TO IMPACT THE TX AND OK PNHDLS WEATHER IS A CLOSED LOW OFF THE SRN CA COAST.
3PM TEMPERATURES ARE ABOUT 15 TO 20 DEGREES WARMER THAN THIS TIME YESTERDAY AND THIS IS WELCOME FOR MANY ACROSS THE ARKLAMISS. THE UPCOMING WEEK WILL START OFF ON THE WARMER SIDE BUT HAVE CHANCES FOR RAIN THROUGH THE FIRST FEW DAYS.
ALSO ADDED A SLIGHT CHANCE FOR SOME RAIN/FREEZING DRIZZLE IN THE FAR EAST AND PARTS OF SOUTHWEST VIRGINIA. IF STUFF DOES SPREAD TO FAR EAST TENNESSEE IT SHOULD STAY AS ALL RAIN, BUT WITH THE ELEVATION IN THE MOUNTAINS/FOOTHILLS THERE IS A CHANCE THAT SOME COULD EXPERIENCE BRIEF FREEZING DRIZZLE. CHATTANOOGA AIRPORT, TN 37 50 41 50 / 20 30 50 50 KNOXVILLE MCGHEE TYSON AIRPORT, TN 36 51 40 48 / 20 30 50 40 OAK RIDGE, TN 36 49 39 48 / 20 30 50 40 TRI CITIES AIRPORT, TN 30 52 39 48 / 20 40 50 50.
928 PM EST SAT FEB 28 2015 LOW PRESSURE WILL SPREAD SNOW AND RAIN OVER THE UPPER OHIO REGION ON SUNDAY. WARMER.
454 PM CST SAT FEB 28 2015 FOR 00Z TAFS /ISSUED 345 PM CST SAT FEB 28 2015/ WARMER CONDITIONS NOTED ACROSS THE TENNESSEE VALLEY HAS HELPED TO MELT MORE OF THE SNOW THAT OCCURRED DURING THE PAST MID WEEK. WITH AN UPPER LOW FORMING OVER THE WESTERN GREAT BASIN. A MOIST/STORMY FLOW UNDER THIS LOW WAS SENDING A SERIES OF DISTURBANCES ACROSS THE CENTRAL CONUS. A COLD FRONT APPROACHING WILL BRING LIKELY RAIN CHANCES SUN NIGHT. AS A STRONG COLD FRONT NEARS FROM THE NW. THE EC BEING SLOWER TO BRING IN THE COLDER AIR WOULD BRING A SHORTER DURATION OF FREEZING PRECIP.
GIVEN THE UNCERTAINTY OF IFR, HAVE LEFT THE MENTION OUT OF THE TAFS FOR NOW, EXCEPT WHERE CURRENTLY REPORTING THE LOW CIGS. THE COASTAL TROUGH REMAINS ALONG THE PALM BEACH COUNTY COAST. THE CONVERGENCE DUE TO THE COASTAL TROUGH AND OLD FRONTAL BOUNDARY. FRONTAL BOUNDARY AND COASTAL TROUGH WILL LIFT NORTHWARD AND DRIER AIR WILL BEGIN TO MOVE INTO THE REGION THIS EVENING. MID TO UPPER LEVEL HIGH PRESSURE WILL THEN DOMINATE THE REGION THROUGH THE MIDDLE OF THE WEEK.
WINDS ARE BEING CONTROLLED BY THE GRADIENT SURROUNDING AN AREA OF HIGH PRESSURE OVER THE MID ATLANTIC STATES.
HAVE VFR CONDITIONS AT KTRI, BUT THEY HAVE THE BEST CHANCE TO RECEIVE DRIZZLE AND MAYBE AN OUTSIDE SHOT OF SOME FREEZING DRIZZLE.
OLD FRONTAL BOUNDARY JUST TO OUR SOUTH HAS BEGUN LIFTING BACK NORTHWARD AS A WARM FRONT. A WARM AND HUMID DAY EXPECTED AS WEAKENING HIGH PRESSURE OVER THE ATLC PRODUCES SE WINDS. EXPECT MVFR/IFR CIGS TO DEVELOP OVERNIGHT AS WARM FRONT LIFT NORTH ACROSS THE AREA.
648 PM EST SAT FEB 28 2015 CANADIAN HIGH PRESSURE WILL WEDGE INTO THE AREA FROM THE NORTH THROUGH SUNDAY NIGHT.
/ISSUED 329 PM CST SAT FEB 28 2015/ ALL TEMPERATURES HAVE CLIMBED ABOVE ABOVE FREEZING EXCEPT FOR THE WESTERN PORTION OF RED RIVER COUNTY TEXAS.
TEMPS ACROSS MCCURTAIN AND RED RIVER COUNTIES REMAIN NEAR FREEZING AS OF 03Z. /ISSUED 329 PM CST SAT FEB 28 2015/ ALL TEMPERATURES HAVE CLIMBED ABOVE ABOVE FREEZING EXCEPT FOR THE WESTERN PORTION OF RED RIVER COUNTY TEXAS.
447 PM MST SAT FEB 28 2015 00Z TAF CYCLE MOIST AND SOMEWHAT UNSTABLE SWLY FLOW ALOFT WILL CONTINUE TONIGHT AHEAD OF CLOSED UPPER LEVEL LOW DROPPING SOUTH THROUGH CALIFORNIA. STRATUS CLOUDS WILL LOWER AND AREAS OF FREEZING FOG WILL DEVELOP OVER PORTIONS OF NORTHERN AND CENTRAL NM.
SHOWERS AND CLOUDS DOMINATE THE CENTRAL CALIFORNIA INTERIOR TODAY AS A SLOW MOVING UPPER LOW ROUNDS THE COAST OF CALIFORNIA. THE REGION IS CURRENTLY ON THE INFLOW SIDE OF THE UPPER LOW WITH GOOD DYNAMICS AND LIMITED MOISTURE MOVING ACROSS THE AREA. THE UPPER LOW PRODUCING TODAY/S WEATHER WILL SLOWLY MOVE SOUTHWARD AND BE CENTERED NEAR SANTA BARBARA BY SUNDAY MORNING. WITH THE UPPER LOW FURTHER SOUTH.
AND EVEN BATESVILLE HAVE BEEN SLOW TO RISE THIS EVENING AND ARE STILL SITTING AT OR BELOW THE FREEZING MARK AS OF 7 PM. SURFACE OBSERVATIONS AS WELL AS REPORTS FROM SOCIAL MEDIA CONFIRM THAT SOME LIGHT FREEZING RAIN IS OCCURRING IN THOSE AREAS. AND SCOTT COUNTIES ARE ALSO STILL EXPERIENCING SOME LIGHT FREEZING RAIN.
950 PM EST SAT FEB 28 2015 CANADIAN HIGH PRESSURE WILL WEDGE INTO THE AREA FROM THE NORTH THROUGH SUNDAY NIGHT.
FREEZING RAIN IS BECOMING MORE OF AN ISSUE WITH AREAS OF FREEZING RAIN AND SLEET ACROSS SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. A SOUTHWESTERLY LOW LEVEL JET OF AROUND 60 MPH CONTINUES TO CREATE ISENTROPIC LIFT ACROSS THE REGION THIS EVENING PRODUCING THE AREAS OF FREEZING RAIN AND SLEET. WILL SEE MAINLY FREEZING DRIZZLE ACROSS THE REMAINDER OF NORTHEAST OKLAHOMA. THE TEMPERATURE HAS RISEN TO FREEZING OR JUST ABOVE ACROSS FAR SOUTHEAST OKLAHOMA.
448 PM MST SAT FEB 28 2015 CURRENT THINKING IS FOR THE AREA OF LIGHT SNOW THAT OCCURRED THIS MORNING (PER 850-700MB RH AND BETTER DENDRITIC LAYER TEMPS NEAR THE SFC) WILL CONTINUE TO MOVE EAST AND OUT OF THE AREA BY 00Z SUNDAY AS SLIGHTLY DRIER AIR IN THE LOW LEVELS (AND CONSIDERABLY DRIER AIR IN THE MID LEVELS).
838 PM CST SAT FEB 28 2015 ADDED AREAS OF FREEZING FOG TO THE OKLAHOMA AND TEXAS PANHANDLES FOR TONIGHT THROUGH 10AM. SOME LIGHT FREEZING DRIZZLE WILL BE POSSIBLE WITH THE BEST CHANCE AT GUY SO HAVE RETAINED THE MENTION THERE. WILL WATCH THE TRENDS AND SEE IF FREEZING DRIZZLE WILL NEED TO BE MENTIONED AT DHT AND AMA. /ISSUED 429 PM CST SAT FEB 28 2015/ THE NEXT TO LAST IN A SERIES OF STORMS SYSTEMS SLATED TO IMPACT THE TX AND OK PNHDLS WEATHER IS A CLOSED LOW OFF THE SRN CA COAST.
528 PM CST SAT FEB 28 2015 MAIN FEATURES ACROSS THE CONUS TODAY ARE A DEEP UPPER LEVEL TROUGH DIGGING ACROSS CALIFORNIA RESULTING IN SOUTHWEST FLOW ACROSS THE SOUTHERN CONUS. MORE SUN FOR THE NORTH AND TEMPS INTO THE LOWER 30S. GUIDANCE IS NEAR TO SLIGHTLY WARMER THAN TODAY AND FORECAST FOLLOWS THE SLIGHT WARM UP. UPPER TROUGH OFF THE SOUTHERN CALIFORNIA SUNDAY EVENING.
A WARM FRONT DEVELOPING OVER THE WESTERN GULF WILL SERVE AS A FOCUS FOR FOR LIFR CIGS AND RESTRICTED VISIBILITY.
702 PM EST SAT FEB 28 2015 CANADIAN HIGH PRESSURE WILL WEDGE INTO THE AREA FROM THE NORTH THROUGH SUNDAY NIGHT.
/ISSUED 324 PM CST SAT FEB 28 2015/ WE WILL CONTINUE THE WINTER WEATHER ADVISORY THROUGH TONIGHT WITH AREAS OF FREEZING DRIZZLE/FOG AND SCATTERED LIGHT FREEZING RAIN SHOWERS.
208 PM PST Sat Feb 28 2015 A weather system is impacting California today with cooler and wetter weather.
AREAS OF FREEZING DRIZZLE WILL CONTINUE OVERNIGHT INTO THE MORNING FOR SOUTHEAST PORTIONS OF THE CWA. /ISSUED 324 PM CST SAT FEB 28 2015/ WE WILL CONTINUE THE WINTER WEATHER ADVISORY THROUGH TONIGHT WITH AREAS OF FREEZING DRIZZLE/FOG AND SCATTERED LIGHT FREEZING RAIN SHOWERS.
505 PM MDT Tue Apr 7 2020 The main short term forecast concern is the possibility of elevated fire weather conditions ahead of a cold front on Wednesday.
The cold front has moved through the forecast area this morning with a wind shift to the north and northeast. Skies will become mostly sunny for today but temperatures will be quite a bit cooler than yesterday with 50s across the west and 40s across the far east.
Severe thunderstorms are possible across the area tonight as a weak cold front passes through the region.
A northerly pressure gradient will establish during the midday and afternoon hours as a dry cold front oozes south through Kansas. As such, today will be "cooler" than Tuesday's 80s, but still quite warm for early April, well into the 70s.
244 AM CDT Wed Apr 8 2020 A mid-level closed low has been moving down the western coast of the CONUS and is now off shore of southern California. Ridging down stream over the Gulf Coast extends up through the combined Oklahoma and Texas Panhandles and will bring one more day of above normal temperatures, in the upper 70's to mid 80's, to the FA especially for the southeast. At the surface, winds will start out of the southwest becoming northerly late this morning with the passage of a weak cold front. With the low RH values expected from dewpoints in the 20s in the west. Winds could briefly get up to 20 mph out of the north early today, for this area behind a cold front. Elevated fire weather conditions will primarily exist due to the low RH with RFTIs around 2.
249 AM CDT Wed Apr 8 2020 Area caught up in stagnant/baggy airflow as a cold front was hung up from northeast MN through south central MN, into eastern NE. This is expected to last until around 9 am before dissipating as a slightly drier push of air moves in from the west as the cold front pushes through. As the cold front moves through this morning, it will be reinforced by a fairly vigorous mid-level wave moving through the Northern Plains. Otherwise, breezy northwest winds kick in today, ushering in cooler/drier (compared to yesterday) airmass. Plan on highs in the lower 50s to lower 60s. High pressure builds in tonight for clearing and chilly conditions.
A cold front will bring additional chances for showers and thunderstorms Wednesday afternoon and overnight.
As of 08Z Wednesday, the center of the trough was positioned around Sioux Falls area, with the cold front extending along the Missouri River.
Issued by National Weather Service Bismarck ND 158 AM EDT Wed Apr 8 2020 No sections updated Severe thunderstorms are possible across the area tonight as a weak cold front passes through the region.
105 AM CDT Wed Apr 8 2020 The desert southwest upper level low will eventually weaken and head toward Texas late in the week.
315 AM CDT Wed Apr 8 2020 The region will be between low pressure to the east and high pressure approaching from the west today. Models are in pretty good agreement that there may be some light rain showers as the high begins to nose in this morning, and already seeing some accas looking cloud cover over the western part of the area.
These clouds will continue to traverse across the region overnight as they wrap around a low pressure system, currently centered off the Southern California coast. This coincides with the change in trajectory of the low toward the Southern California coast. Models keep most of the precip south of the Monterey Bay tonight and Wednesday however a stray shower cannot be ruled out farther north as moisture continues to wraps around the low.
Skies will clear in most areas this morning as drier air moves in behind a cold front. High pressure moves in tonight with diminishing winds and clear to partly cloudy skies.
Severe thunderstorms are possible across the area this evening as a strong cold front passes through the region.
Continued counter-clockwise churning is evident on GOES-East satellite imagery and Key West radar imagery, a remnant of thermal troughing from mainland Florida plus weak lingering baroclinicity. This little mesolow has allowed for southeasterly breezes along the Upper Keys with north to northeasterly breezes to the north and west of the Lower Keys.
250 AM MDT Wed Apr 8 2020 Current surface analysis shows cold front exiting southern portions of the forecast area, with north to northwest winds and cooler air slowly settling into the region. Upper level analysis shows low pressure over central Canada and a cutoff low along the southern CA coast. Near to slightly below average temperatures will return to the area for the next couple of days behind the cold front.
A cold front will make its way through the CWFA this afternoon. Current WV satellite reveals an upper low off the the California coast with west-southwesterly flow in place over W TX. Tonight, as the surface cyclone becomes centered over SW OK, expect light winds and mostly clear skies. Cold front approaches from the north Wednesday evening.
455 AM EDT Wed Apr 8 2020 Low pressure over the upper midwest will track across northern Pennsylvania tonight, then high pressure will build into the state Wednesday.
CDG Chattanooga Airport, TN 80 60 69 43 60 / 30 30 20 10 0 Knoxville McGhee Tyson Airport, TN 78 59 66 40 56 / 30 40 30 10 10 Oak Ridge, TN 79 57 65 40 57 / 30 30 20 10 10 Tri Cities Airport, TN 75 55 64 37 53 / 30 50 50 10 10.
319 AM CDT Wed Apr 8 2020 While another day of above normal temps are in store today, a cold front will push south through the region this afternoon and early evening due to a an upper low progged to translate from south central Canada and into the Upper Mississippi Valley and Great Lakes Regions.
A cold front is expected to edge into the northeast Permian Basin by 12Z and stall near the Pecos River around 15Z.
Winds will increase through the afternoon as a cold front swings south into the region.
A low pressure system will bring cooler temperatures, along with chances for rain and high country snow showers from Wednesday afternoon through the remainder of the work week. A downturn in shower activity and warmer temperatures are forecast for the weekend.
426 AM EDT Wed Apr 8 2020 Thunderstorms developing this morning along a cold front will move southeast by this afternoon. Another round of showers and thunderstorms is expected tonight when the next cold front is forecast to sweep through from the west.
Between 15Z and 18Z, winds will shift to the north behind a weak cold front.
242 AM EDT Wed Apr 8 2020 Low pressure over the upper midwest will track across northern Pennsylvania tonight, then high pressure will build into the state Wednesday.
At the surface, a strong cold front will contribute to an increase in showers and thunderstorms across the Mid-South this evening into early Thursday. Temperatures this afternoon will climb into the low to mid 80s with dewpoints in the 60s. Given the highly unstable pre- storm environment, sufficient deep-layer shear, and steep mid-level lapse rates, any storms that do develop tonight have the potential to be strong to severe. Following the passage of the cold front Thursday morning, dry conditions and cooler temperatures will prevail until the weekend.
A strong cold front will drop rapidly southeastward through our forecast area this afternoon and evening as a deepening upper level trough moves eastward through the northern Plains and into the Great Lakes region. The deep layer wind shear will also increase this afternoon and tonight as a very strong mid level wind max south of the upper level trough moves into southern IA tonight. Discrete convection, possibly supercells will develop across northeast MO and west central IL by late afternoon along the cold front. Temperatures and surface dew points will quickly drop after the cold frontal passage tonight as winds become strong and gusty from a northwest direction behind the cold front.
904 AM EDT Wed Apr 8 2020 A cold front will cross the region tonight and bring one more round of showers and thunderstorms.
Temperatures are generally in the low to mid 70s, closer to what should be normal early April high temperatures.
Farther north, a cold frontal boundary will move into the area, but during the evening hours, turning winds to the north along/north of the I-20 corridor during the overnight hours. (Thursday through Wednesday) A fairly strong cold front will pass through the area on Thursday leaving much cooler temperatures across the region. This cold front may also kick off a couple of thunderstorms ahead of it as it moves through.
Skies will clear in most areas this morning as drier air moves in behind a cold front. High pressure moves in tonight with diminishing winds and clear to partly cloudy skies. The light winds and mostly clear skies will continue on Thursday as high pressure moves through the forecast area.
Ridge of high pressure off the coast will be nudging inland providing pleasant Spring weather today and overnight.
Above-normal temperatures are expected both today and Thursday with high temperatures ranging from the mid 80s along the Gulf Coast to the low 90s across the interior both days. Precipitable water increases some heading into Thursday with the ridging breaking down a bit as a cold front pushes across the SE CONUS and into North Florida. Mid to upper tropospheric ridging will prevail from the Gulf of Mexico through the northwest Caribbean Sea.
539 AM MDT Wed Apr 8 2020 The GOES-R WV/IR imagery depicted a digging upper level trough into the northern CONUS, and slow-moving upper level low offshore of southern CA. The leading edge of cooler air extended from the NE/SD border thru northeast WY into west-central MT. Temperatures will be noticeably cooler today compared to the past few days with highs in the 50s.
A strong cold front will push into OK later this evening, bringing an end to the warmer weather for awhile.
Winds will increase through the afternoon as a cold front swings south into the region. Cooler air will sink in behind the front and temperatures are expected to be near normal Wednesday night into Thursday. Low temperatures will range from the low to mid-30s. Thursday will be cooler, with highs ranging from the mid-50s to low 60s.
1050 AM EDT Wed Apr 8 2020 A cold front will cross the region tonight and bring one more round of showers and thunderstorms.
Dry weather is expected today through Thursday as a ridge aloft builds toward the West Coast. A shallow marine layer will keep temperatures much cooler for coastal areas through Thursday. Warmer temperatures are expected across the interior today as an upper level ridge builds toward the Pacific NW. Coastal areas may warm into the lower 60s today. Coastal areas should see more sunshine today as the marine layer compresses in response to the large scale sinking associated with the offshore ridge.
433 AM CDT Wed Apr 8 2020 Current surface analysis places low over Manitoba, with cold front dropping south into the upper Midwest/central plains.
658 AM CDT Wed Apr 8 2020 Area caught up in stagnant/baggy airflow as a cold front was hung up from northeast MN through south central MN, into eastern NE. This is expected to last until around 9 am before dissipating as a slightly drier push of air moves in from the west as the cold front pushes through. As the cold front moves through this morning, it will be reinforced by a fairly vigorous mid-level wave moving through the Northern Plains. Otherwise, breezy northwest winds kick in today, ushering in cooler/drier (compared to yesterday) airmass. Plan on highs in the lower 50s to lower 60s. High pressure builds in tonight for clearing and chilly conditions. A secondary mid-level trough and surface cold front drops into the area Thursday.
Otherwise dry and warmer with locally gusty northerly wind at times in the Central Valley. 548 DM closed upper low off the SoCal coast is progged to slowly shift inland later today. Guidance suggests high temperatures this afternoon will be upwards of 15 degrees warmer in northern portions of the Sacramento Valley with lower 80s expected.
As of 08Z Wednesday, the center of the trough was positioned around Sioux Falls area, with the cold front extending along the Missouri River. Upper-level trough moves over the Great Lakes on Thursday, keeping the region under the influence of northwest flow aloft. At the surface, high-pressure system builds in. With cooler conditions, mostly cloudy skies and breezy/windy conditions, Thursday features the coolest day of the week.