Aikyam-Lab/Synoptic-Bench huggingface dataset:
400-600 FOOT STRATUS DRAPED ACROSS MUCH OF DEEP SOUTH TEXAS WITH THE EXCEPTION OF THE LOWER VALLEY. 500MB TROUGH AXIS CURRENTLY EXTENDS FROM THE TEXAS BIG BEND SOUTHWESTWARD INTO NORTHERN MEXICO. AS THE TROUGH MOVES EAST TODAY WHATS LEFT OF THE SHOWER ACTIVITY WILL MOVE EAST AS WELL WITH CHANCES CONFINED TO THE COASTAL WATERS THIS AFTERNOON. HIGH PRESSURE. NO RAIN TO SPEAK OF WITH WEAK MID LEVEL RIDGING ON TOP OF US. MID LEVEL THICKNESS VALUES AND WARMING 850/700MB TEMPERATURES LEADS TO HIGHS IN THE MID TO UPPER 80S ACROSS THE BRUSH COUNTRY AND RIO GRANDE PLAINS DOWN TO THE LOW 80S IN THE COASTAL COUNTIES AND UPPER 70S AT THE COAST.
EXPECT GENERAL SUBSIDENCE WILL LIMIT PRECIPITATION TODAY AND HAVE DROPPED POPS FOR ALL BUT THE FAR NRN COUNTIES WHICH WILL BE CLIPPED BY UPPER LOW THIS AFTERNOON AS IT EJECTS ENEWD.
ADDITIONAL SHOWER ACTIVITY MAY REACH OUR NORTHERN MARINE LEGS LATE OVERNIGHT/TOWARD DAYBREAK MON MORNING IN ADVANCE OF THE APPROACHING LOW PRESSURE.
929 AM MDT Sun Mar 22 2015 Lowered PoPs for this afternoon, but still kept a slight chance over the higher terrain across southwest Montana. As a ridge of high pressure moves over the Treasure State, dry and quiet conditions are anticipated with temperatures remaining above seasonal averages. mainly over the high plains of Central and North Central Montana.
1230 PM EDT SUN MAR 22 2015 HIGH PRESSURE OVER THE CANADIAN PLAINS WILL PUSH SOUTHEAST ACROSS THE EASTERN LAKES MONDAY NIGHT.
THIS MORNING'S FREEZING LEVEL CAME IN AT 12743FT. THE SYSTEM IS DEVOID OF MUCH UPPER LEVEL DYNAMICS AS TROUGHING IS TAKING PLACE OVER THE DESERT SOUTHWEST. FORCING RIDGING DOWNSTREAM WITH LIMITED BAROCLINICITY IN THE FRONTAL ZONE. UPPER LEVEL LOW OVER RED RIVER VALLEY OF NORTH TEXAS WILL BE LIFTING NORTHEAST DURING THE DAY AS WELL.
MUCH QUIETER SHORT TERM FORECAST WITH THE UPPER LEVEL LOW NOW OPENING UP OVER NORTH TEXAS AND OKLAHOMA. HIGH PRESSURE WILL BUILD OVER THE AREA TODAY HELPING TO PULL MORE DRY AIR INTO THE REGION.
CONDITIONS WILL IMPROVE THIS EVENING AND OVERNIGHT AS THE UPPER TROUGH MOVES EAST AND CLOUDS DECREASE. THEN THE NEXT SIGNIFICANT CHANCE OF RAIN WILL BE MID WEEK WITH A COLD FRONT. THEN GRADUALLY MOVING IT EAST AND THE UPPER LOW PRESSURE MOVES EAST.
A SLIGHT BREAK IN SHOWER ACTIVITY IS EXPECTED OVERNIGHT BEFORE A LOW LEVEL TROUGH APPROACHES THE UT/CO/WY BORDER ON MONDAY BRINGING MORE COVERAGE OF SHOWERS ACROSS NE UTAH AND NW COLORADO TOWARD THE EVENING HOURS.
RAIN IS FINALLY MAKING IT TO THE SURFACE WITHIN THE HUN CWA AFTER DRY AIR IN THE LOWER LEVELS HAVE KEPT MOST OBS DRY THROUGHOUT THE MORNING. THE UPPER LEVEL TROUGH OVER THE SOUTHERN PLAINS WILL PROVIDE MOISTURE AND CLOUD COVER INTO THE REGION AGAIN TODAY. RAIN CHANCES WILL INCREASE THROUGH TODAY AND INTO TONIGHT AS THE TROUGH MOVES ACROSS THE AREA. CIGS ALSO ARE SLOW TO LOWER LIKELY BECAUSE THE MOIST AIR MASS WITH THE RAIN IS NOT HERE YET SO ALSO MOVED BACK THE TIMING OF THE LOWER CIGS. LOW CONFIDENCE ON THE TIMING OF THE LOWERING OF THE CIGS/CATEGORY CHANGES SO AMENDMENTS MAY BE NECESSARY THROUGH THE DAY FOR THAT.
PLEASANT WEATHER IS ANTICPATED FOR THE REST OF TODAY WITH BREAKS IN THE CLOUD COVERAGE AND HIGHS IN THE LOWER TO MID 70S OVER MOST PLACES. A WEAKENING UPPER LEVEL TROUGH EXITS TO THE EAST OF TEXAS TODAY.
A RIDGE OF HIGH PRESSURE BUILDING INTO THE AREA TODAY WILL KEEP THE WEATHER QUIET FOR MUCH OF THE AREA. PRECIPITATION TYPE WILL BE MAINLY DRIVEN BY SURFACE TEMPERATURES AS MAX TEMPERATURES ALOFT ARE NEAR TO BELOW FREEZING. WITH THE NORTHEAST FLOW OFF LAKE SUPERIOR AREAS RIGHT NEAR THE LAKE WILL BE COOLER THAN ELSEWHERE. SFC AND UPPER LEVEL RIDGING WILL BE OVER THE FORECAST AREA MONDAY NIGHT.
/ISSUED 607 AM CDT SUN MAR 22 2015/ THE UPPER LOW THAT HAS BEEN PROVIDING THE WIDESPREAD RAIN AND ISOLATED THUNDERSTORMS FOR THE PAST COUPLE OF DAYS HAS BECOME AN OPEN WAVE AND LIFTING EAST AND NORTHEAST ACROSS THE SOUTHERN PLAINS AND SOUTHWEST TEXAS. AS THE UPPER TROUGH CONTINUES TO TRACK EAST. WITH WET SOILS AND COOLER TEMPERATURES EXPECTING PATCHY FOG TO DEVELOP LATE TONIGHT AND MAY HANG AROUND INTO THE EARLY MORNING HOURS MONDAY BEFORE DISSIPATING.
EARLY MORNING GOES WATER VAPOR IMAGERY SHOWED AN UPPER LEVEL LOW OVER TEXAS THAT HAD DEAMPLIFIED/OPENED UP OVER THE THE PREVIOUS 12 HOURS. THIS FEATURE WILL LIFT EAST THROUGH THE LOWER MS RIVER VALLEY TODAY. UNDER LOW AMPLITUDE UPPER LEVEL RIDGING.
A WEAKENING UPPER LEVEL TROUGH EXITS TO THE EAST OF TEXAS TODAY.
718 AM EDT SUN MAR 22 2015 A LARGE AREA OF HIGH PRESSURE WILL BUILD SOUTHEAST ACROSS THE GREAT LAKES.
/ISSUED 324 AM CDT Sun Mar 22 2015/ The ua trough responsible for widespread rainfall is already east of the region and will be replaced by a low amplitude ua ridge. Even warmer temperatures are expected Monday as nearly zonal flow aloft will result in westerly winds increasing and spreading further eastward across the area.
MOST OF THE PRECIPITATION IS FALLING AS RAIN/FREEZING RAIN. SOME ICY SPOTS EXIST ESPECIALLY ON BRIDGES. TODAY THROUGH MONDAY NIGHT 09Z SFC ANALYSIS SHOWS LOW PRESSURE OVER SWRN SASKATCHEWAN WITH A TROUGH EXTENDING SOUTHWARD TO ANOTHER. LOW PRESSURE CENTER OVER THE NEBRASKA PANHANDLE. DRY WEATHER WITH DECREASING CLOUDS IS THEN EXPECTED THIS AFT AS THE UPPER RIDGE REBOUNDS TO THE WEST. WIDESPREAD SHOWERS ARE EXPECTED ON MONDAY NIGHT AS THE UPPER TROUGH AFFECTS THE NORTHERN PLAINS.
607 AM CDT SUN MAR 22 2015 THE UPPER LOW THAT HAS BEEN PROVIDING THE WIDESPREAD RAIN AND ISOLATED THUNDERSTORMS FOR THE PAST COUPLE OF DAYS HAS BECOME AN OPEN WAVE AND LIFTING EAST AND NORTHEAST ACROSS THE SOUTHERN PLAINS AND SOUTHWEST TEXAS. AS THE UPPER TROUGH CONTINUES TO TRACK EAST. WITH WET SOILS AND COOLER TEMPERATURES EXPECTING PATCHY FOG TO DEVELOP LATE TONIGHT AND MAY HANG AROUND INTO THE EARLY MORNING HOURS MONDAY BEFORE DISSIPATING.
BREAKS IN THE THICKER CLOUDS SHOULD ALLOW THE HIGHS TO RISE NEAR THE FORECAST VALUES AS THERE HAS ALREADY BEEN SOME QUICK RISES IN THE LAST HOURS. THIS MORNING'S FREEZING LEVEL CAME IN AT 12743FT. THE SYSTEM IS DEVOID OF MUCH UPPER LEVEL DYNAMICS AS TROUGHING IS TAKING PLACE OVER THE DESERT SOUTHWEST. FORCING RIDGING DOWNSTREAM WITH LIMITED BAROCLINICITY IN THE FRONTAL ZONE. UPPER LEVEL LOW OVER RED RIVER VALLEY OF NORTH TEXAS WILL BE LIFTING NORTHEAST DURING THE DAY AS WELL.
MODELS CONTINUE TO SHOW SOME DISCREPANCY WITH THE TIMING AND POSITION OF WARM FRONT AND ITS NORTHWARD PROGRESSION INTO THE CWA TODAY AHEAD OF THE SHORT WAVE. 31 GFS AND ECMWF SHOW GOOD AGREEMENT WITH HIGH PRESSURE BUILDING DOWN THE ATLANTIC EAST COAST MONDAY NIGHT AND ESTABLISHING A WEAK.
An upper low over north central TX is opening up and ejecting eastward.
CHATTANOOGA AIRPORT, TN 63 49 68 48 / 80 80 30 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 66 46 65 46 / 30 60 10 10 OAK RIDGE, TN 66 45 65 46 / 30 50 10 10 TRI CITIES AIRPORT, TN 65 41 63 42 / 20 20 10 10.
733 AM EDT SUN MAR 22 2015 AVIATION CANADIAN HIGH PRESSURE WILL CONTINUE TO BUILD IN TODAY THROUGH MONDAY AND BRING FAIR WEATHER WITH WELL BELOW NORMAL TEMPERATURES.
/ISSUED 519 AM CDT SUN MAR 22 2015/ A STALLED FRONTAL BOUNDARY AND ASSOCIATED AREA OF LOW PRESSURE OVER THE LAST SEVERAL DAYS HAS BROUGHT SOUTHEAST TEXAS TWO HEAVY SWATHS OF RAIN. CLOUDY SKIES AND LIGHT RAINS WILL HOLD TEMPERATURES INTO THE LOW TO MID 70S. MONDAY MORNING WILL SEE RIDGING ALOFT AND DRIER AIR AT SURFACE SPILLING IN FROM THE NORTHWEST.
A STALLED FRONTAL BOUNDARY REMAINS TO THE NORTH OF FLORIDA WITH A MID TO UPPER LEVEL RIDGE CONTINUING ACROSS THE REGION WHICH SHOULD ONCE AGAIN BE SUFFICIENT TO SUPPRESS CHANCES OF CONVECTION AND SHOWERS ACROSS THE REGION. SOUTHWESTERLY WINDS ACROSS THE REGION WILL AGAIN LEAD TO UNSEASONABLY WARMER TEMPERATURES ACROSS THE PENINSULA TODAY.
AS HIGH PRESSURE REMAINS ANCHORED OVER THE DESERT SOUTHWEST.
A WEAK COLD FRONT WILL SPREAD LIGHT RAIN ACROSS THE SOUTHWEST HALF OF WESTERN WASHINGTON THIS MORNING. AN UPPER LEVEL TROUGH WILL BRING SHOWERS AND A CHANCE OF THUNDERSTORMS ON MONDAY.
A FEW ISOLATED LATE AFTERNOON/EVENING THUNDERSTORMS APPEAR POSSIBLE ACROSS CENTRAL /SOUTH-CENTRAL KS IN THE VICINITY OF A WARM FRONT/DRYLINE TRIPLE POINT. THE HIGHER CONFIDENCE FORECAST IS THUNDERSTORM COVERAGE INCREASING MONDAY EVENING/NIGHT OVER PRIMARILY CENTRAL/NORTHEAST KS.
THE FREEZING RAIN ADVISORY STILL LOOKS WELL PLACED AND WILL LEAVE AS IS. UPDATE QUICK UPDATE TO ISSUE A FREEZING RAIN ADVISORY FOR THE SOUTHWEST CORNER. FORECAST HIGHLIGHTS AND CHALLENGES IN THE SHORT TERM PERIOD WILL BE THE THREAT FOR FREEZING PRECIPITATION ACROSS THE SOUTHWEST THIS MORNING. THERMAL PROFILES AND SFC TEMPERATURES INDICATING LIGHT FREEZING RAIN IS LIKELY FALLING. MADE A FEW CALLS TO THE SOUTHWEST WHICH INDICATED NO IMPACTS AS SO FAR THE LIGHT FREEZING PRECIP IS ONLY TRACING OUT. HAVE A SPECIAL WEATHER STATEMENT OUT NOW FOR THE FREEZING RAIN POTENTIAL. AND WILL CONTINUE WITH THIS UNLESS WE HEAR OF MORE IMPACTS AND A FREEZING RAIN ADVISORY BECOMES NEEDED. MAIN THREAT FOR FREEZING RAIN WILL REMAIN WEST OF THE MISSOURI RIVER ACROSS MY SOUTHWEST THROUGH MID MORNING.
THE RAIN WILL PULL EAST THIS EVENING AND OVERNIGHT SO DO HAVE POPS SOUTHEASTERN MIDDLE TENNESSEE FOR TONIGHT THEN DRY MONDAY AS UPPER TROUGH AXIS GETS WELL EAST OF MY CWA. HIGHS TODAY IN THE LOW TO MID 60S WITH TONIGHTS LOW IN THE 40S.
FOLLOWING FRONTAL PASSAGE, THE MID-LEVEL TROUGH ALOFT AND ONSHORE FLOW IN THE LOWER LEVELS WILL PRODUCE SHOWERS LASTING THROUGH TONIGHT AND INTO MONDAY MORNING, BEFORE TAPERING OFF MONDAY AFTERNOON AS THE TROUGH SLIDES EAST. THE PREVIOUS DAY'S COLD FRONT WILL DROP SNOW LEVELS DOWN TO AROUND 4000 FEET SUNDAY NIGHT INTO MONDAY MORNING, THEREFORE MANY MOUNTAIN LOCATIONS, INCLUDING THE HIGHER AREA PASSES, ARE LIKELY TO SEE PERIODS OF HEAVY WET SNOW. HOWEVER, DURING PERIODS OF HEAVIER PRECIPITATION, AND OVERNIGHT WHEN TEMPERATURES DROP TO BELOW FREEZING, SURFACES COULD BECOME SLICK.
THE DEEP LAYERED RIDGE CENTERED OVER CUBA REMAINS STRONG ENOUGH TO PREVENT SHOWER DEVELOPMENT. TEMPERATURES WILL CLIMB INTO THE LOW TO MID 80S WITH DEW POINTS HOLDING IN THE UPPER 60S TO NEAR 70.
A warm front will lift north through the Ozarks Monday afternoon into Monday night and bring a more moist, spring-like air mass into the area.
1026 AM EDT SUN MAR 22 2015 A LOW PRESSURE SYSTEM WILL MOVE EAST ALONG A STALLED FRONT STRETCHING ACROSS THE GULF COAST STATES. AN UPPER LEVEL TROUGH OVER THE SOUTHERN PLAINS WILL CONTINUE TO TRACK TO THE NORTHEAST TODAY. AS UPPER LEVEL LOW MOVES OVER THE REGION TONIGHT. RAIN AND EXTENSIVE CLOUDS WILL CAP HIGH TEMPERATURES IN THE LOW TO MID 60S. PREFER COOLER MAV GUIDANCE WHICH IS IN LINE WITH THE SREF AND LOCAL WEDGE GUIDANCE. SO LOW TO MID 50S WITH TEMPERATURES LIKELY FALLING THROUGH THE AFTERNOON AS RIDGE STRENGTHENS TO THE NORTH.
1123 AM EDT SUN MAR 22 2015 HYDRO CANADIAN HIGH PRESSURE WILL CONTINUE TO BUILD IN TODAY THROUGH MONDAY AND BRING FAIR WEATHER WITH WELL BELOW NORMAL TEMPERATURES.
1039 AM CDT SUN MAR 22 2015 UPPER LEVEL TROUGH IS DIRECTLY OVHD LATE THIS MORNING AND WILL CONTINUE TO FILL AND LIFT OUT QUICKLY EAST OF OUR AREA THIS EVENING. MAINLY ACROSS OUR NORTHERN ZONES WHERE HOURLY TEMPS WERE RUNNING A LITTLE COOLER THAN OUR HOURLY FCST TEMPS WOULD SUGGEST.
620 AM CDT SUN MAR 22 2015 A RIDGE OF HIGH PRESSURE BUILDING INTO THE AREA TODAY WILL KEEP THE WEATHER QUIET FOR MUCH OF THE AREA. PRECIPITATION TYPE WILL BE MAINLY DRIVEN BY SURFACE TEMPERATURES AS MAX TEMPERATURES ALOFT ARE NEAR TO BELOW FREEZING. WITH THE NORTHEAST FLOW OFF LAKE SUPERIOR AREAS RIGHT NEAR THE LAKE WILL BE COOLER THAN ELSEWHERE. SFC AND UPPER LEVEL RIDGING WILL BE OVER THE FORECAST AREA MONDAY NIGHT.
TEMPS ATTM WERE MAINLY IN THE LOWER 50S WITH DEWPOINTS IN THE MID/UPPER 40S. AN UPPER TROF OVER THE SRN PLAINS CONTINUES TO PUMP MOISTURE ACROSS THE TN VALLEY WITH -RA FALLING ALONG OUR SRN ZONES SOUTHWARD THRU CENTRAL/SWRN AL. BY MONDAY THE UPPER TROF WILL BE MOVING EAST OF THE CWA TAKING THE SHRA ACTIVITY WITH IT.
TEMPS ARE JUST SLIGHTLY WARMER THIS MORNING THANKS TO WARMER LOWS AND EVEN SOME PEEKS AT THE SUN EARLY. THE RAIN WILL PULL EAST THIS EVENING AND OVERNIGHT SO DO HAVE POPS SOUTHEASTERN MIDDLE TENNESSEE FOR TONIGHT THEN DRY MONDAY AS UPPER TROUGH AXIS GETS WELL EAST OF MY CWA. HIGHS TODAY IN THE LOW TO MID 60S WITH TONIGHTS LOW IN THE 40S.
RIDGING REMAINS IN PLACE ACROSS THE REGION WITH DRY LOW LEVEL EASTERLY FLOW. THE LATEST HRRR AND RAP GUIDANCE INDICATES THAT QPF WILL REMAIN OUTSIDE OF THE FA WITH STRONGER RIDGING/MORE DRY AIR. MODELS ARE TRENDING WARMER TODAY (THINNER CLOUD COVER).
as subsidence develops in wake of an upper level low. /ISSUED 357 AM CDT Sun Mar 22 2015/ (Today and Tonight) Upper low in Northwest Texas continued to move east early this morning. Showers should end by 7 AM CDT, as subsidence occurs in the wake of the upper low.
BRIEF PERIODS OF FREEZING RAIN COULD BE POSSIBLE FOR THE MISSOURI RIVER VALLEY THIS MORNING. LIGHT RAIN WILL ALSO BE POSSIBLE WITH ON THE BACK SIDE OF THIS SYSTEM AS WARMER AIR MOVES IN FROM THE WEST. THE SYSTEM OVER ALBERTA WILL REMAIN NORTH AND EAST OF THIS CWA ON MONDAY WITH THE MAIN IMPACT BEING WARMER TEMPERATURES IN THIS CWA. THIS SYSTEM WILL CAUSE WEAK UPPER LEVEL RIDGING OVER THE WESTERN DAKOTAS.
1115 AM EDT SUN MAR 22 2015 14Z SFC ANALYSIS SHOWS LOW PRESSURE SQUEEZING BY TO THE SOUTH AS HIGH PRESSURE SETTLES DEEPER INTO THE OHIO VALLEY. THIS HIGH WILL ATTEMPT TO CLEAR THE SKIES FROM THE NORTH TODAY WHILE HIGH CLOUDS CONTINUE TO DRIFT OVER AT LEAST THE SOUTHERN PARTS OF KENTUCKY. THEY CURRENTLY VARY FROM THE LOW 40S IN THE NORTHWEST TO THE LOWER 50S IN THE SOUTH WHILE DEWPOINTS ARE DRIEST NORTH. TO THE LOWER 40S IN THE FAR SOUTH. SURFACE ANALYSIS THIS MORNING FEATURES DRY COLD FRONT THAT BASED ON OBS HAS MADE IT THROUGH MUCH OF THE REGION THIS HOUR. OUR WEATHER WILL START OUT QUIET MONDAY NIGHT WITH ZONAL FLOW IN PLACE ALOFT AND HIGH PRESSURE TO OUR NORTHEAST.
IT LOOKS LIKE THE LOW LEVEL DRY AIR WILL BE OVERCOME INTO THE AFTERNOON HOURS. BRIEF PERIODS OF FREEZING RAIN COULD BE POSSIBLE FOR THE MISSOURI RIVER VALLEY THIS MORNING. LIGHT RAIN WILL ALSO BE POSSIBLE WITH ON THE BACK SIDE OF THIS SYSTEM AS WARMER AIR MOVES IN FROM THE WEST. THE SYSTEM OVER ALBERTA WILL REMAIN NORTH AND EAST OF THIS CWA ON MONDAY WITH THE MAIN IMPACT BEING WARMER TEMPERATURES IN THIS CWA. THIS SYSTEM WILL CAUSE WEAK UPPER LEVEL RIDGING OVER THE WESTERN DAKOTAS.
654 AM CDT SUN MAR 22 2015 UPPER TROUGH MOVING THROUGH THE NORTHERN ROCKIES WILL MOVE ONTO THE PLAINS TODAY AND DRIVE A COLD FRONT INTO THE AREA THIS EVENING. WHICH WOULD RESULT IN WARMER TEMPS ACROSS MOST OF THE REGION AS WELL. AND WARMED TEMPS MORESO INTO THE LOWER TO MID 70S. FRONT THEN SETTLES SOUTH OF THE REGION MONDAY WITH COOLER TEMPS EXPECTED IN THE UPPER 50S TO LOWER 60S.
Weak upper trough was making its way east across the Central Plains early this morning, stemming from the old system to the southwest, with continued high cloud overhead.
LOW PRESSURE WILL MOVE EAST ACROSS THE EASTERN GULF OF MEXICO TODAY. HAVE NUDGED THE HIGHEST POPS NORTH TO NORTHERN SECTIONS OF SE GA. LOW PRESSURE WILL CROSS THE AREA TOMORROW WITH NORTHEAST WINDS INCREASING BY LATE AFTERNOON BEHIND A COLD FRONT.
TODAY THROUGH MONDAY NIGHT 09Z SFC ANALYSIS SHOWS LOW PRESSURE OVER SWRN SASKATCHEWAN WITH A TROUGH EXTENDING SOUTHWARD TO ANOTHER. LOW PRESSURE CENTER OVER THE NEBRASKA PANHANDLE. DRY WEATHER WITH DECREASING CLOUDS IS THEN EXPECTED THIS AFT AS THE UPPER RIDGE REBOUNDS TO THE WEST. WIDESPREAD SHOWERS ARE EXPECTED ON MONDAY NIGHT AS THE UPPER TROUGH AFFECTS THE NORTHERN PLAINS.
A LOW PRESSURE ASSOCIATED WITH THE SURFACE BOUNDARY ALONG THE COAST DEVELOPED OVER SOUTHERN TEXAS COAST YESTERDAY THEN SHIFTED NORTHEAST OVER SOUTHEAST TEXAS INTO LOUISIANA. THIS IS DUE IN PART TO A BROAD UPPER TROUGH MOVING ACROSS THE DEEP SOUTH TODAY INTO MONDAY. OUR BEFORE ADVERTISED NORTHERN LOW PRESSURE SYSTEM TODAY OVER NORTHERN NEW ENGLAND WILL CONTINUE TOWARD NOVA SCOTIA. THIS WILL HELP TO AIDE THE LOW OVER TEXAS/LOUISIANA TO PROGRESS ALONG THE COAST TODAY INTO MONDAY. WEAK RIDGING IS EXPECTED OVER THE EASTERN U.
MORNING RAOBS SUPPORT A QUICK INCREASE IN THE BOUNDARY LAYER MOISTURE WITH JUST MODEST WARMING AS MIXING OF THE LOWEST 1 KFT WILL INCREASE DEWPTS TO THE 65-67 RANGE. THIS FEATURE WILL HELP DRAW NORTHWARD THE HIGHER SFC DEWPTS TO OUR S AND SUPPORT SBCAPE VALUES TO 400-800 J/KG.
1019 AM EDT SUN MAR 22 2015 A LARGE AREA OF HIGH PRESSURE WILL BUILD SOUTHEAST ACROSS THE GREAT LAKES.
736 AM EDT SUN MAR 22 2015 HIGH PRESSURE OVER THE CANADIAN PLAINS WILL PUSH SOUTHEAST ACROSS THE EASTERN LAKES MONDAY NIGHT.
947 AM PST WED FEB 18 2015 HIGH PRESSURE ALOFT WILL CREATE SLIGHTLY WARMER WEATHER TODAY AND THURSDAY.
HIGH PRESSURE WILL REMAIN ACROSS THE REGION THROUGH THURSDAY.
1058 AM CST WED FEB 18 2015 LARGE-SCALE UPPER TROF CONTINUES TO MAKE ITS WAY EWD TODAY. THEN EAST TO SOUTHEAST 7-12 KNOTS INTO THE DAY THURSDAY AS HIGH PRESSURE SHIFTS EAST ACROSS THE MISSISSIPPI.
VFR CONDITIONS WILL PREVAIL THROUGH THE PERIOD AS HIGH PRESSURE BEGINS TO SETTLE INTO THE STATE FROM THE NW.
A LEE SIDE TROUGH WILL AID IN KEEPING DOWNSLOPING OFF THE FOOTHILLS INCREASING WESTERN TEMPERATURES A FEW DEGREES WARMER. COOLER AIR OUT TO THE EAST DUE TO INCREASED CLOUD COVER WILL CONTINUE INTO TOMORROW MORNING. THIS WILL KEEP DAY TEMPERATURES COOLER AND EVENING TEMPERATURES A TAD WARMER. WILL KEEP TEMPERATURES IN THE LOWER 30S CLOSER TO THE FOOTHILLS OVERNIGHT WITH LOWER 20S FURTHER EAST. GUSTY WINDS WILL RETURN TO THE HIGHER MOUNTAINS AS CROSS SECTIONS INDICATE COMPONENT ALONG WINDS UP TO 50 KTS OVER THE HIGHER PEAKS.
339 PM CST WED FEB 18 2015 HIGH PRESSURE THIS AFTERNOON RIDGING ACROSS THE FORECAST AREA WITH SUNNY SKIES. A REINFORCING COLD FRONT WILL MOVE ACROSS THE FORECAST AREA DURING THE LATE EVENING TO OVERNIGHT PERIOD. ANOTHER MILD DAY ON THURSDAY WITH HIGH PRESSURE IN CONTROL. THIS HIGH WILL MOVE OFF TO THE EAST BY THURSDAY NIGHT WITH LOW PRESSURE FORMING OVER WEST TEXAS.
BUT THINK THE RIDGE AXIS MOVING IN SHOULD ALLOW THE WINDS TO EASE ENOUGH TO KEEP WIND CHILLS OF -35 AND BELOW FROM BECOMING WIDESPREAD. DRY WEATHER IS EXPECTED ON THURSDAY AS HIGH PRESSURE SLIDES OVER THE REGION. WITH HIGHS STRUGGLING TO CLIMB INTO THE LOW/MID SINGLE DIGITS (ABOVE ZERO). THURSDAY NIGHT THROUGH WEDNESDAY A MID LEVEL RIDGE WILL REMAIN OVER THE EASTERN PACIFIC/WESTERN NOAM THROUGH THE END OF THE FORECAST PERIOD.
HIGH PRESSURE WILL SLOWLY SLIDE TO THE EAST THROUGH THE SHORT TERM. THIS WILL ALLOW FOR MOISTURE TO RETURN TO THE LOWER LEVELS WEDNESDAY. DEVELOPING LOW PRESSURE ACROSS THE SOUTHERN HIGH PLAINS WILL INCREASE ONSHORE FLOW AS WELL AS THE LLJ OVER SOUTH TEXAS LATE THURSDAY INTO THURSDAY NIGHT. THIS WILL PUMP IN MORE MOISTURE TO THE REGION AND RESULT IN WARMER OVERNIGHT LOWS THURSDAY NIGHT.
Mostly clear skies with the ridge axis centered overhead will allow lows tonight to fall once again in the single digits to near 0 across far northeast Kansas. Lesser snow cover and increasing mid level clouds over north central Kansas hold readings to the low teens. Skies remain mostly cloudy through the daytime as southeast winds around 10 mph advect slightly warmer air to the area.
VERY STRONG ARCTIC COLD FRONT MOVING THROUGH RIGHT NOW. THIS COMBINED WITH THE LOW SINGLE DIGIT TEMPERATURES WILL RESULT IN WIND CHILL VALUES BELOW ZERO TO MINUS 5 DEGREES. TEMPERATURES WILL WARM A TOUCH AS THE HIGH BEGINS TO MOVE EASTWARD.
EXPECT DRY WEATHER AND VERY COLD TEMPS FOR TONIGHT AS ARCTIC HIGH PRESSURE BUILDS IN ACROSS THE REGION. LOWS TONIGHT WILL FALL INTO THE LOWER TEENS NORTH TO LOWER 20S SOUTH. DRY WEATHER WILL CONTINUE THURSDAY AS HIGH PRESSURE SETTLES IN. HIGH TEMPS WILL ONLY MAKE IT INTO THE LOWER 30S NE TO MID 40S SW. CLOUDS WILL BE ON THE INCREASE THU NIGHT AS THE HIGH MOVES OFF TO THE EAST AND MOISTURE BEGINS TO MOVE IN OUT AHEAD OF THE NEXT WEATHER SYSTEM. LOWS WILL RANGE FROM THE LOWER 20S NE TO THE MID 30S SW.
109 PM PST WED FEB 18 2015 Mild high pressure will continue to bring above average temperatures to the Inland Northwest through Thursday.
1257 PM EST WED FEB 18 2015 LOW PRESSURE WILL DEVELOP WELL SOUTH OF THE AREA TODAY.
230 PM MST WED FEB 18 2015 STRONG HIGH PRESSURE WILL REMAIN SITUATED OVER THE DESERT SOUTHWEST FOR THE REMAINDER OF THE WEEK. THE HIGH PRESSURE SYSTEM WILL EVENTUALLY BREAK DOWN OVER THE WEEKEND ALLOWING FOR SLIGHTLY COOLER TEMPERATURES. YET REMAINING WARMER THAN AVERAGE. HIGH PRESSURE WILL BE THE DOMINATING WEATHER FEATURE TO CONTINUE THROUGH LATE THURSDAY.
Some breezy northerly winds will also occur with slightly cooler temperatures. Strong subsidence over Interior NorCal as upper level ridge axis is overhead. Upper ridge flattens and retrogrades offshore over the next several days as vort maxes ride the top of it into the PacNW/Great Basin.
314 PM CST Wed Feb 18 2015 High pressure trying to build into the region on the heels of the exiting storm system. Visible satellite imagery already showing the diminishing cu field and have backed down the clouds accordingly, but not so much over the IN border, nearer to the trof axis. with a slightly warmer trof through the center of the state in the gap of the snow field. Morning upper air continues to show deep major trough over the central and eastern US. Deep arctic air to remain over the region rest of work week as deep upper level trough remainds intrenched over eastern half of US.
ALTHOUGH TEMPERATURES ARE RUNNING A COUPLE OF DEGREES COOLER THAN EARLIER EXPECTED.
CURRENT TEMPS RANGE FROM THE LOWER 20S ALONG THE KY/MO BORDERS TO THE LOWER 30S FROM CLARKSDALE TO TUPELO. /ISSUED 456 AM CST WED FEB 18 2015/ ARCTIC AIR WILL CONTINUE TO PLUNGE INTO THE MIDSOUTH TODAY BEHIND A COLD FRONT. EXPECT READINGS RANGING FROM THE LOWER 20S TO THE LOWER 30S. ARCTIC HIGH PRESSURE WILL SETTLE OVER THE MIDSOUTH.
TEMPERATURES WILL WARM SLIGHTLY ON THURSDAY AS THE HIGH SHIFTS FURTHER TO THE EAST AND A SOUTHERLY LOW LEVEL FLOW RETURNS.
SOME ADDITIONAL ENERGY WILL SWING DOWN IN THE TROUGH WITH ADDITIONAL CLOUDS AND SNOW SHOWERS THIS AFTERNOON. THE THERMAL TROUGH WILL STILL BE WELL ENTRENCHED ON THURSDAY WITH HIGHS. ONLY REACHING THE TEENS NORTH TO THE LOWER 20S SOUTH.
Winds will increase through the afternoon along the Rocky Mountain Front, likely reaching high wind criteria overnight, so will leave the High Wind Warning as is.
A RIDGE WILL PERSIST OVER THE WRN CONUS AS A TROUGH DOMINATES THE EAST.
338 PM EST WED FEB 18 2015 A COLD FRONT CROSSING THE REGION THIS AFTERNOON WILL BRING THE NEXT ROUND OF REINFORCING COLD AIR. HEAVIEST SNOWFALL THIS AFTERNOON IS OCCURRING IN A NORTH-SOUTH ORIENTED BAND EXTENDING FROM ARMSTRONG COUNTY PENNSYLVANIA INTO MONONGALIA COUNTY WEST VIRGINIA ALONG A COLD FRONT. WILL CONTINUE THE WINTER WEATHER ADVISORY OVERNIGHT FOR THE HIGHER ELEVATIONS OF PA/WV/MD. TEMPERATURES ARE ALREADY STARTING TO FALL BEHIND THE COLD FRONT.
Winds will increase through the afternoon along the Rocky Mountain Front, likely reaching high wind criteria overnight, so will leave the High Wind Warning as is. Central and southwest MT remain on eastern flank of high pressure ridge centered along WA/OR/ID border, with northwest flow aloft continuing to stream broad area of mid- and high-level clouds, mainly north/east of a KCTB-KGTF-KLWT line. The ridge will drift across MT this evening and Thurs, pushing the moisture stream into ern MT, will less cloud cover over our local terminals.
432 PM EST WED FEB 18 2015 HIGH PRESSURE IS SLOWLY BUILDING BEHIND A COLD FRONT THAT MOVED THROUGH EARLIER TODAY.
259 PM MST WED FEB 18 2015 UPPER RIDGE WILL SHIFT EASTWARD OVER THE NEXT 24 HOURS WITH FLOW ALOFT BECOMING MORE WESTERLY WITH TIME. THIS WILL BRING DRY AND WARMER CONDITIONS TO THE AREA AS LEE TROF DEVELOPS OVERNIGHT. HOWEVER AS THE LEE TROF DEEPENS AFTER MIDNIGHT. WINDS SHOULDN'T BE AS STRONG AS LAST NIGHT/S ACROSS THE HIGH COUNTRY WITH THE UPPER JET SHIFTING EASTWARD. THIS SHOULD RESULT IN TEMPERATURES WELL INTO THE UPPER 50S TO MID 60S ACROSS THE LOWER ELEVATIONS. WITH GENERALLY 30S AND 40S FOR THE HIGH COUNTRY.
NW FLOW ACROSS NE MT CONTINUES AS DEEP TROUGH REIGNS SUPREME OVER THE EASTERN HALF OF THE COUNTRY.
HIGH PRESSURE OVER CALIFORNIA WILL KEEP DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES ACROSS THE REGION THROUGH THE WEEK. AN ONSHORE FLOW IN THE LOW LEVELS BROUGHT OCEAN COOLED AIR INTO THE SJ VLY LAST NIGHT. IT IS POSSIBLE THAT SOME OF THIS STRATUS MIGHT LIFT INTO THE LOWER FOOTHILLS THIS AFTERNOON AND SLOW THE WARM UP THERE.