Aikyam-Lab/Synoptic-Bench huggingface dataset:
ALOFT - A SHORT WAVE TROUGH WAS OVER THE CENTRAL PLAINS WHILE A RIDGE REACHED FROM THE CENTRAL GULF OF MEXICO TO THE GREAT LAKES. SURFACE - LOW PRESSURE WAS ALONG THE KS/OK LINE WITH A FRONT SOUTH INTO MEXICO. HIGH PRESSURE CENTERED IN THE SE U. HAS ALREADY DROPPED BELOW FREEZING. LOCATIONS SOUTH OF THERE WILL BE COOL TO COLD AND MAY APPROACH FREEZING WITH PATCHY TO AREAS OF FROST EXPECTED. AS THE HIGH SLOWLY EXITS TO THE EAST LOW LEVEL EASTERLY FLOW BECOME MORE SOUTHEASTERLY. TO NEAR NORMAL FOR THE LOWS TONIGHT/TUE MORNING THEN TO AROUND OR JUST ABOVE TUE AFTERNOON.
1216 AM EST MON JAN 25 2016 STRONG LOW PRESSURE OVER THE NORTH ATLANTIC WILL CONTINUE TO MOVE NORTHEAST AWAY FROM THE AREA TONIGHT AS HIGH PRESSURE BUILDS OVER OUR AREA QUICKLY FROM THE WEST. THE HIGH WILL THEN MOVE OFFSHORE MONDAY.
LOW LEVEL FLOW WILL BE OUT OF THE SOUTH/SOUTHEAST OVER THE FAR EASTERN ZONES WITH INVERTED TROUGH. SOME FREEZING DRIZZLE EXPECTED OVER FAR EASTERN ZONES FROM BJI TO PKD TONIGHT. WATER VAPOR LOOP INDICATED AN UPPER LEVEL TROUGH EXTENDED FROM SASK TO TX PANHANDLE. ALSO WILL ADD PATCHY FREEZING DRIZZLE IN THE EASTERN ZONES OVERNIGHT. THE HIGH RESOLUTION MODELS ARE SHOWING THIS FEATURE IN SOME REGARD MOVING INTO THE CENTRAL FA BY MID EVENING. GOOD THING THIS TIME TOO IS THAT WIND SPEEDS WILL STAY ON THE LOW SIDE SO NO BLOWING TO WORRY ABOUT.
STILL THINK BEST CHANCE OF MAINLY SHRA ACTIVITY SHOULD HOLD OFF UNTIL AFTER 26/06Z WHEN THE NEXT COLD FRONT ENTERS THE AREA. COLD FRONT IS EXPECTED TO MOVE OFF THE COAST BY 26/12Z. AREAS OF FOG THAT DO DEVELOP WILL COME TO AN END WITH THE PASSAGE OF THE COLD FRONT.
116 AM EST MON JAN 25 2016 HIGH PRESSURE OVER THE MID ATLANTIC REGION WILL PROVIDE DRY AND MILD TEMPERATURES FOR MONDAY. MONDAY NIGHT THROUGH TUESDAY NIGHT, LOW PRESSURE WILL TRACK FROM THE MID WEST NORTHEAST INTO THE WESTERN GREAT LAKES THEN INTO EASTERN CANADA.
NORTHERLY STREAM OF UPPER TROUGH OVERHEAD HAS PRODUCED DECENT LAPSE RATES AS SCATTERED TO NUMEROUS RAIN/SNOW/ICE PELLET SHOWERS DEVELOP OVER OUR CENTRAL ZONES.
THIS SHOULD BE PRIMARILY A DRIZZLE/FREEZING DRIZZLE EVENING. THE 12Z NAM IS THE WETTEST MODEL AND DOES SUGGEST A MIX OF FREEZING DRIZZLE AND SNOW AS FAR SOUTH AS I-70. FAIRLY CONFIDENT IN A DRIZZLE/FREEZING DRIZZLE SCENARIO. KRC A WARMING TREND IS IN STORE FOR THE WEEK AS AN UPPER LEVEL RIDGE BUILDS INTO THE REGION. KRC A COLD FRONT WILL SLIDE SOUTHWARD ACROSS THE REGION FOR LATE TONIGHT INTO MONDAY MORNING. COULD SEE A FEW BRIEF POCKETS OF LIGHT FREEZING DRIZZLE ACROSS CENTRAL KANSAS EARLY MONDAY MORNING. THE LOW CLOUD HEIGHTS WILL GRADUALLY RISE DURING THE DAYTIME HOURS ON MONDAY.
Large temperature gradient across SW KS this afternoon, with NE zones struggling to get out of the 30s, while Elkhart is in the lower 60s as of noon. Strong NW winds of 20-35 mph and associated cold air advection will keep afternoon temperatures primarily in the low to mid 40s.
1101 PM CST SUN JAN 24 2016 FOR 06Z TAFS /ISSUED 812 PM CST SUN JAN 24 2016/ HIGH PRESSURE OVER THE REGION WILL CONTINUE TO MOVE EAST OVERNIGHT ALLOWING THE WINDS TO SWITCH TO THE SE. THIS ALONG WITH CI CLOUDS MOVING ACROSS THE CWA WILL KEEP TEMPS WARMER THAN LAST NIGHT.
AREAS OF FREEZING FOG WILL LIKELY DEVELOP FROM NORTHEAST TO SOUTHWEST THIS EVENING DUE TO LOW LEVEL UPSLOPE WINDS GRADUALLY INCREASING IN RESPONSE TO THE DEEPENING LOW PRESSURE CENTER IN SOUTHEAST COLORADO. AS THE LOW MOVES INTO SOUTHWEST KANSAS OVERNIGHT THE WIND FIELD WILL INCREASE AND VEER TO NORTHWEST AND EVENTUALLY NORTH WHICH WILL SCOUR OUT THE FOG FROM WEST TO EAST. WINDY CONDITIONS WILL CONTINUE THROUGH THE DAY MONDAY WITH SCATTERED TO ISOLATED LIGHT SNOW SHOWERS GRADUALLY WINDING DOWN WITH ANOTHER WEAK VORTICITY LOBE INDICATED ON THE BACKSIDE OF THE MAIN TROUGH AXIS. AFTER THE INITIAL UPPER TROUGH MOVES ACROSS THE REGION TONIGHT. A COUPLE OF SECONDARY SHORT WAVE TROUGHS FOLLOW IN THE HIGH AMPLITUDE NORTH/NORTHWEST FLOW. DURING THAT TIME THE WEST COAST RIDGE MOVES INTO THE INTERMOUNTAIN REGION.
HIGHS WILL REACH THE LOWER 50S SOUTH TO MID 40S NORTH TODAY.
A BACKDOOR COLD FRONT WILL CONTINUE PUSHING SOUTHWEST THROUGH THE AREA THIS EVENING. APPEARS TO BE A GOOD SET UP FOR FREEZING DRIZZLE AS THE LIFT INCREASES AND STRATUS CLOUD TOP TEMPS BELOW -10C. MODELS IN FAIR AGREEMENT WITH EVOLUTION OF UPPER AND SURFACE FEATURES THROUGH THE MID TERM AND BRINGING A COLD FRONT THROUGH WESTERN NEBRASKA TOWARDS THE END OF THE WEEK. PACIFIC AIR AND UPPER RIDGE MOVING EAST INTO WESTERN NEBRASKA AS UPPER TROUGH MOVES SOUTH INTO THE SOUTHERN PLAINS TUESDAY.
There could also be a few pockets of freezing drizzle in the morning depending on how saturated mid levels of the atmosphere become. Towards the surface, a cold front that moved through the area last night will continue to push eastward into the Mississippi Valley today with cold air advection in place across the area. The pressure gradient will be tight as high pressure builds into the area leading to strong north to northwest winds across the area. Lows tonight should dip into the lower 20s with a possibility of upper teens across some areas of west central Kansas.
AREAS OF FREEZING DRIZZLE SHOULD MOVE IN FROM THE SOUTHEAST MONDAY MORNING. THE FREEZING DRIZZLE TO DRIZZLE WOULD CONTINUE FOR MOST OF THE AFTERNOON. MAIN CONCERN FOR TOMORROW IS THE FREEZING DRIZZLE. MODELS REMAIN IN GOOD AGREEMENT WITH BUILDING BROAD UPPER LEVEL RIDGING POST THE EARLY WEEK TROUGH.
A DRY COLD FRONT WILL CONTINUE TO MOVE EASTWARD AND WILL BE EAST OF DURANT AND ATOKA BY NOON. BREEZY NORTHWEST WINDS WILL BRING IN COOLER AIR COMPARED TO YESTERDAY. USED A BLEND OF GUIDANCE HIGHS RANGING FROM THE MID 40S IN NORTHERN OKLAHOMA TO THE LOWER 60S NEAR AND SOUTH OF THE RED RIVER.
309 AM CST MON JAN 25 2016 TODAY: COLD FRONT WILL CONTINUE TO PUSH SOUTH THROUGHOUT THE MORNING. VERY TRANSIENT WINDOW OF OPPORTUNITY FOR SOME FREEZING DRIZZLE OR POSSIBLY A FEW FLAKES IN THE STRONGEST COLD AIR ADVECTION. ALSO SOME POTENTIAL FOR FREEZING FOG WHICH COULD ALSO RESULT IN ISOLATED SLICK SPOTS. TUE NIGHT-WED: MUCH COOLER TEMPERATURES ANTICIPATED TUE NIGHT GIVEN RIDGE AXIS MOVING ACROSS THE AREA. SLIGHTLY COOLER TEMPERATURES POSSIBLE FOR THE WEEKEND AS FRONT DRIFTS INTO THE AREA. -HOWERTON A COLD FRONT WILL SLIDE SOUTHWARD ACROSS THE REGION FOR LATE TONIGHT INTO MONDAY MORNING. COULD SEE A FEW BRIEF POCKETS OF LIGHT FREEZING DRIZZLE ACROSS CENTRAL KANSAS EARLY MONDAY MORNING. THE LOW CLOUD HEIGHTS WILL GRADUALLY RISE DURING THE DAYTIME HOURS ON MONDAY.
THE NAM SHOWS SOME VERY DRY AIR MOVING INTO THE PANHANDLE LATE TONIGHT WHICH COULD PRODUCE LOWS IN THE LOW SINGLE DIGITS ACROSS THE WRN SANDHILLS. PACIFIC HIGH PRESSURE ACROSS THE REGION FOR TUESDAY. WESTERN RIDGE EXPANDS AS WE GO THROUGH THE REST OF THE WEEK WITH A WARM UP EXPECTED.
352 AM CST MON JAN 25 2016 (Today and tonight) A cold front will move through West Central Texas today, however, temperatures will only be slightly cooler. The Big Country will be most affected by the front, with cooler highs in the lower 60s.
STILL EXPECT A WIND SHIFT DURING THE EARLY MORNING HOURS INITIALLY FROM THE WEST AND THEN FROM THE NORTHWEST AS A COLD FRONT MOVES INTO THE AREA.
As of 3Z, do have some patchy freezing fog over south central KY over the thick snowpack, so did add that to the forecast grids overnight. Monday and Monday night low pressure will move from Kansas to Michigan, bringing its cold front through southern Indiana and central Kentucky during the pre-dawn hours Tuesday. As for precipitation type, not only are surface temperatures expected to stay slightly above freezing, temperatures a few thousand feet off the surface are progged in the middle 40s.
This feature won't affect our weather until Monday, as a cold front is forced through southern Missouri.
1231 AM EST MON JAN 25 2016 LOW PRESSURE WILL TRACK FROM SOUTHWEST KANSAS INTO THE WESTERN GREAT LAKES BY LATE MONDAY EVENING. LOWS TONIGHT WILL BE IN THE LOWER TO MIDDLE 20S. HELPING TO KEEP TEMPERATURES MUCH WARMER THAN THE PAST SEVERAL NIGHTS. LOW LEVEL MOISTURE WILL SURGE NORTHEAST OVER THE FORECAST AREA EARLY MONDAY AS SURFACE TEMPERATURES RISE ABOVE FREEZING. THERE IS STILL A SMALL CHANCE FOR A BRIEF PERIOD OF FREEZING RAIN OR SLEET AT THE ONSET OF PRECIPITATION. LEFT EXIT REGION OF MID LEVEL JET TO PROVIDE UPPER DIFFLUENCE WHILE LOW LEVEL WARM AIR ADVECTION AND ORTHOGONAL FLOW ON ISENTROPIC SURFACES PROVIDE ASCENT AHEAD OF MAIN COLD FRONT.
THE LOW LEVEL FLOW WILL BE LESS AND EXPECT IFR CIGS/FOG TO DEVELOP AROUND 10Z THROUGH 14Z.
LATEST SUITE OF GUIDANCE ALL DEVELOP A BAND OF MID LEVEL FRONTOGENESIS WITHIN THE TROF AXIS. SO THERE MAY BE SOME FREEZING DRIZZLE BEFORE WINDS PICK UP. WE WILL SEE SOME WARMER AIR ADVECT INTO THE FORECAST AREA LATE TUESDAY. UPPER LEVEL FLOW WILL TRANSITION AN UPPER RIDGE OVER THE REGION TOWARD THE END OF THE WEEK BEFORE IT FLATTENS OUT.
LOW CLOUDS WILL DEVELOP WITH MVFR CEILINGS AS A WARM FRONT MOVES ACROSS THE STATE. THE COLD FRONT WILL MOVE ACROSS THE STATE DURING MONDAY. CONDITIONS WILL IMPROVE MONDAY EVENING BEHIND THE COLD FRONT TO VFR CONDITIONS. A WARM FRONT WILL ENTER THE STATE TONIGHT AND MOVE SOUTH TO NORTH. AND THE COLD FRONT WILL ENTER WEST ARKANSAS AROUND NOON MONDAY.
314 AM CST MON JAN 25 2016 Stratus making a slow approach into the forecast area from the NW, bringing reduced visibility in haze along with below freezing temperatures. Only weak returns noted on radar just NW of the area, but with sub freezing temps still anticipate some slick spots on the roadways as the stratus and haze work their way southeast this morning. Temperatures by noon expected to be at or above freezing across most of the area and will carry a slight chance for a rain or snow north to a rain chance east. As the upper trough exits eastward Tuesday, dry northwest flow takes over much of the week.
324 AM EST MON JAN 25 2016 LOW PRESSURE WILL TRACK FROM SOUTHWEST KANSAS INTO THE WESTERN GREAT LAKES BY LATE THIS EVENING.
NORTHWEST FLOW ALOFT WILL KEEP THE WEATHER FAIR AND ONLY SLIGHTLY WARMER ON MONDAY AS ANOTHER WEAK LOW PRESSURE TROUGH SLIDES SOUTH THROUGH THE STATE. A STRONG HIGH PRESSURE RIDGE WILL FOLLOW FOR THE REMAINDER OF THE WORK WEEK WITH FAIR. AND WARMER DAYS.
CORRECTED TEXT LOW PRESSURE WILL TRACK FROM SOUTHWEST KANSAS INTO THE WESTERN GREAT LAKES BY LATE THIS EVENING.
FAVORABLE CONDITIONS FOR FREEZING DRIZZLE ON THE BACK EDGE OF THE SNOW AS IT MOVES EAST ACROSS CENTRAL ND. ANOTHER DECENT SETUP FOR LIGHT FREEZING PRECIPITATION MONDAY NIGHT AS WE DRY OUT ALOFT YET REMAIN SATURATED AT THE BOUNDARY LAYER. AND ADDED A MENTION FOR PATCHY FREEZING DRIZZLE ALL AREAS MONDAY NIGHT. ALSO A POSSIBILITY OF SOME LIGHT FREEZING DRIZZLE WEST INTO CENTRAL TONIGHT WITH THIS SECOND BAND AS SOME DRIER AIR WORKS INTO THE MID LEVELS OF THE ATMOSPHERE. PATCHY FREEZING DRIZZLE AND LIGHT SNOW THIS AFTERNOON AND TONIGHT HIGHLIGHT THE SHORT TERM FORECAST. ALSO MAINTAINED THE MENTION OF PATCHY FREEZING DRIZZLE ACROSS MUCH OF THE AREA THIS AFTERNOON THROUGH TONIGHT. LOW LEVEL SATURATION WARMER THAN -10C SUPPORTS THIS THREAT UNTIL THE COLUMN CAN SATURATE SUFFICIENTLY TO ALLOW ICE CRYSTALS TO REACH THE LOW LEVEL STRATUS.
327 AM EST MON JAN 25 2016 A LOW PRESSURE SYSTEM AND ASSOCIATED COLD FRONT WILL MOVE ACROSS THE GREAT LAKES AND OHIO VALLEY TONIGHT INTO TUESDAY.
1222 AM EST MON JAN 25 2016 TEMPERATURES WILL MODERATE UNTIL PASSAGE OF A COLD FRONT ON TUESDAY. BUILDING HIGH PRES AND WARMER. ALBEIT STILL WEAK FLOW WILL DRIVE TEMPS ON MONDAY ABOVE THE FREEZING MARK FOR ALL LOCATIONS SOUTH OF I-80. BUT SERIOUS MELTING MUST WAIT FOR A WARMER. WL AGAIN BE ON THE INCRS BY MONDAY NIGHT AS THE SHRTWV RIDGE IS ERODED IN ADVANCE OF A MIDWRN TROF/CDFNT. THE RAIN-SPPRTG WARM ADVCTN ON THE ERN FLANK OF THAT SYSTEM IS EXPECTED TO PUSH TEMPS AND DEWPOINTS ABOVE THE FREEZING MARK UNTIL FRONTAL PASSAGE LATER ON TUESDAY. ONE PROBLEM CAVEAT MAY BE IN THE DUBOIS AREA WHERE THE SURFACE MAY REMAIN SUFFICIENTLY COLD FOR SOME INITIAL LGT FREEZING RAIN ON TUESDAY MORNING.
THIS EVENING THROUGH MONDAY NIGHT 20Z SURFACE ANALYSIS SHOWED COLD FRONT FROM CENTRAL MT TO KIEN TO NORTHEAST NE. WATER VAPOR MATINEE PROJECTED UPPER TROUGH FROM AB/SK TO THE FOUR CORNERS AREA. UPPER TROUGH WILL PUSH INTO THE MIDWEST BY MONDAY AFTERNOON. THE WAVE WILL SLOWLY PUSH COLD FRONT INTO NE THIS EVENING. AFOREMENTIONED SURFACE COLD FRONT STALLS OVER NE AS WAVE PASSES.
427 AM EST MON JAN 25 2016 HIGH PRESSURE REMAINS IN CONTROL ACROSS THE SOUTHEASTERN STATES AND THE FLORIDA PENINSULA. HIGH PRESSURE WILL REMAIN IN CONTROL ACROSS THE REGION TODAY WITH REGIONAL WINDS BECOMING MORE EASTERLY.
LIGHT SCATTERED PRECIPITATION ECHOES ARE SHOWING UP AT THIS TIME DUE TO UPPER TROUGH TRAVERSING THE REGION. CLEARING FROM WEST TO EAST DURING THE AFTERNOON AS HIGH PRESSURE BUILDS INTO THE AREA. CLOSEST TO THE TRACK OF THE UPPER TROUGH.
COMPRESSIONAL WARMING AHEAD OF THE PACIFIC FRONT SHOULD ALLOW HIGH TEMPERATURES TODAY TO WARM INTO THE LOWER TO MIDDLE 70S ACROSS MUCH OF THE AREA. A TROUGH IS EXPECTED TO NEAR THE REGION BY TUESDAY AFTERNOON AND THIS SHOULD ENHANCE ISENTROPIC ASCENT ON TOP OF THE FRONTAL INVERSION. BUT DISAGREE ON THE MOISTURE AVAILABLE AS THE GFS KEEPS THE LOW LEVELS OF THE ATMOSPHERE MUCH TOO DRY FOR ANY PRECIP PRODUCTION.
AFTER SUNRISE UPPER LEVEL RIDGING AND LOW LEVEL SOUTHERLY FLOW SETTLES OVER THE REGION. LIGHT SOUTHERLY WINDS GENERALLY 10 KTS OR LESS WILL PREVAIL AS DAYTIME TEMPERATURES REACH THE MID TO UPPER 20S IN THE HIGHER TERRAIN AND NORTHEAST KINGDOM.
UPPER LEVEL RIDGE JUST OFF THE PACIFIC COAST IS GOING TO DOMINATE THE WEATHER TODAY AND TOMORROW.
/ISSUED 246 PM CST SUN JAN 24 2016/ EARLY AFTERNOON SURFACE OBSERVATIONS SHOW LEE CYCLOGENESIS OCCURRING OVER EASTERN COLORADO AS AN UPPER LEVEL TROUGH APPROACHES FROM THE WEST. FURTHER WEST TEMPERATURES ARE SLIGHTLY COOLER ONLY REACHING THE MID TO UPPER 60S MAINLY BECAUSE OF A BAND OF CIRRUS SEEN ON VISIBLE SATELLITE WHICH IS THICKEST ACROSS THE WESTERN PANHANDLES. SOME ASCENT WITH THE APPROACHING TROUGH WILL BE ENOUGH AT LEAST THICKENING/LOWERING CLOUDS LATER IN THE NORTHWEST. AS THE TROUGH MOVES THROUGH TONIGHT A COLD FRONT WILL BRING COOLER TEMPERATURES. MEANWHILE MID LEVEL HEIGHTS BUILD AS WESTERN CONUS RIDGE AMPLIFIES AND GRADUALLY SHIFTS EAST.
HIGH PRESSURE ALOFT WILL KEEP THE AIRMASS DRY AND STABLE TONIGHT WITH LIGHT WINDS. AN UPPER LEVEL HIGH PRESSURE RIDGE WILL KEEP THE AIRMASS DRY AND STABLE THROUGH THE NIGHT. A LOW PRESSURE TROF WILL MOVE INTO THE PACIFIC NORTHWEST WEDNESDAY AND AN ASSOCIATED COLD FRONT WILL CROSS THE ROCKIES IN THE MORNING AND MOVE EAST THROUGH CENTRAL MONTANA.
FORECAST IS IN GOOD SHAPE WITH UPPER LOW PUSHING EAST OF THE STATE TONIGHT.
SLOW MOVING UPPER LOW IS CURRENTLY TRACKING ACROSS THE ARKLATEX REGION WITH ANOTHER UPPER CIRCULATION DIVING SOUTHEAST ACROSS SOUTHERN MN. HIGH PRESSURE STRETCHES FROM ND TO NM WITH LOW PRESSURE JUST OFF THE GULF COAST S OF LA. THE UPPER LOW WILL BE APPROACHING THE SOUTHEAST CONUS. LAWSON VFR CONDITIONS ARE EXPECTED ACROSS THE AREA TONIGHT INTO WED AS A RIDGE OF HIGH PRESSURE MOVES ACROSS THE PLAINS.
RADAR SHOWS NUMEROUS SHOWERS THROUGH THIS REGION WITH MORE SHOWERS ASSOCIATED WITH AN UPPER LEVEL LOW TO THE WEST MOVING SLOWLY EASTWARD. /ISSUED 248 PM CDT TUE APR 28 2015/ AN UPPER LEVEL LOW PRESSURE SYSTEM CENTERED OVER THE ARKLATEX THIS AFTERNOON WILL CONTINUE TO TRACK ACROSS THE LOWER MISSISSIPPI VALLEY THROUGH WEDNESDAY MORNING. TEMPERATURES WILL BE WARMER ON WEDNESDAY AS WELL WITH HIGHS REACHING INTO THE UPPER 60S TO LOWER 70S.
HIGH PRESSURE RIDGE OUT IN THE WESTERN PLAINS WILL REMAIN OUT THERE TONIGHT.
749 PM EDT TUE APR 28 2015 HIGH PRESSURE OVER THE REGION WILL KEEP DRY AND SEASONABLE WEATHER INTO WEDNESDAY.
A WARMING TREND WILL BEGIN WEDNESDAY AS HIGH PRESSURE APPROACHES NEW MEXICO FROM THE WEST. HIGHS WILL AVERAGE 10 TO 15 DEGREES WARMER THAN TODAY JUST ABOUT EVERYWHERE.
/ISSUED 251 PM CDT TUE APR 28 2015/ THE H500 TROUGH CONTINUES TO CHURN EASTWARD ACROSS SERN OK AND THE ARKLATEX.
615 PM CDT Tue Apr 28 2015 Positively tilted upper-level ridging across the Rockies and northern Plains will continue to push a slow moving upper closed low into the Lwr Mississippi Valley through the overnight period tonight. a weak cold front is expected to push through the region overnight coincident with a thin mid-level cloud deck. Upstream ridging should quickly push the moisture to the southeast later in the day on Wednesday.
645 PM CDT TUE APR 28 2015 AN UPPER LEVEL TROUGH AND COLD POCKET WAS MOVING THROUGH MN AND NORTHERN IA. A BAND OF MID LEVEL CLOUDS ASSOCIATED WITH THE TROUGH WAS MOVING SOUTHEAST AND WAS PUSHING INTO THE NW CORNER OF THE DVN CWA. HIGH PRESSURE REMAINED IN CONTROL TODAY. TEMPERATURES WERE ROUGHLY 5 F WARMER THAN YESTERDAY. VISIBLE SATELLITE IMAGERY SHOWED A BAND OF MID LEVEL CLOUDS ACROSS MINNESOTA AND N IOWA WHICH IS ASSOCIATED WITH A NORTHWESTERLY WIND SHIFT AND WEAK TROUGH OF LOW PRESSURE.
655 PM CDT TUE APR 28 2015 A STRATUS DECK WITH HIGH END MVFR TO LOW END VFR CIGS WILL PERSIST ACROSS SOUTH CENTRAL TEXAS TONIGHT AS AN UPPER LEVEL TROUGH AXIS IS SLOW TO MOVE ACROSS OUR AREA AND MIXING WILL BE MINIMIZED WITH SUNSET. IT WILL FINALLY ERODE OUT WEST LATE TONIGHT AND ELSEWHERE EARLY TO MID WEDNESDAY MORNING AS THE TROUGH AXIS MOVES SOUTH OF OUR AREA AND DAYTIME MIXING COMMENCES. AFTERNOON WATER VAPOR SATELLITE IMAGERY SHOWS AN UPPER LOW OVER NORTH TEXAS WITH WESTERLY FLOW AND SUBSIDENCE NOTED OVER SOUTH CENTRAL TEXAS.
635 PM CDT TUE APR 28 2015 00Z WEDNESDAY A DRY NORTHERLY UPPER FLOW TONIGHT WILL CONTINUE THROUGH WEDNESDAY AS AN UPPER HIGH BUILDS IN FROM THE WEST. WITH THE DEPARTING UPPER LOW MOVING EASTWARD THROUGH THE SOUTHEASTERN CONUS AND A RIDGE BUILDING IN FROM THE WEST.
RATHER UNEVENTFUL NEXT 48 HOURS DOMINATED BY HIGH PRESSURE. FAVORABLE RADIATIONAL CONDITIONS AND DEWPOINTS IN THE LOW 30S WILL RESULT IN TEMPS NEAR FREEZING BY MORNING EXCEPT WEST RIVER WHERE SOUTHERLY FLOW WILL INCREASE. TEMPERATURES WILL BE SIGNIFICANTLY WARMER FOR WEDNESDAY DUE TO DRY CONDITIONS AND MILDER AIR MOVING IN ALOFT.
658 PM CDT TUE APR 28 2015 ZCZC CHIWRKSRD 280802 TTAA00 KCHI DDHHMM HIGH PRESSURE RIDGE OUT IN THE WESTERN PLAINS WILL REMAIN OUT THERE TONIGHT.
727 PM EDT TUE APR 28 2015 HIGH PRESSURE WILL BUILD OVER THE AREA TONIGHT. THE HIGH WILL SLIDE OFF THE COAST ON WEDNESDAY.
835 PM PDT Tue Apr 28 2015 High pressure will bring mainly dry weather and above normal temperatures to the area through the week.
1004 PM EDT TUE APR 28 2015 LOW PRESSURE IN THE GULF OF MEXICO WILL MOVE EAST OVERNIGHT THEN CROSS NORTHERN FLORIDA WEDNESDAY.
1155 PM CDT TUE APR 28 2015 AN UPPER LEVEL TROUGH AND COLD POCKET WAS MOVING THROUGH MN AND NORTHERN IA. A BAND OF MID LEVEL CLOUDS ASSOCIATED WITH THE TROUGH WAS MOVING SOUTHEAST AND WAS PUSHING INTO THE NW CORNER OF THE DVN CWA. HIGH PRESSURE REMAINED IN CONTROL TODAY. TEMPERATURES WERE ROUGHLY 5 F WARMER THAN YESTERDAY. VISIBLE SATELLITE IMAGERY SHOWED A BAND OF MID LEVEL CLOUDS ACROSS MINNESOTA AND N IOWA WHICH IS ASSOCIATED WITH A NORTHWESTERLY WIND SHIFT AND WEAK TROUGH OF LOW PRESSURE.
A LACK OF MOISTURE AND SUBSIDENCE IN OUR REGION WITH HIGH PRESSURE TAKING CONTROL. KNOCKED DOWN THE LOWS A DEGREE OR TWO. TO STAY ON THE LOWER SIDE OR UNDER GUIDANCE. SQUEEZE PLAY SETUP ON WEDNESDAY WITH THE CWA SANDWICHED BETWEEN APPROACHING UPPER LOW FROM THE NORTHWEST.
1052 PM CDT TUE APR 28 2015 DRIER AIR CONTINUES TO OVERSPREAD NORTH TEXAS ON THE BACK EDGE OF AN UPPER LEVEL LOW PRESSURE SYSTEM. /ISSUED 303 PM CDT TUE APR 28 2015/ AFTER SOME CLOUDS AND CONSIDERABLY COOLER TEMPERATURES ALONG WITH SCATTERED LIGHT SHOWERS. WATER VAPOR IMAGERY SHOWS THE UPPER TROUGH RESPONSIBLE FOR STORMINESS ACROSS THE REGION LIFTING OFF TO THE NORTHEAST WITH DRIER AIR MOVING IN FROM THE WEST. THE EXTENSIVE LOW CLOUDINESS WILL LINGER THROUGH EVENING BUT WITH THE DEPARTURE OF THE UPPER TROUGH. IF THE HIGH AT DFW REMAINS AT OR BELOW 61.
CONVECTION IS AGAIN DEVELOPING ACROSS THE ERN GULF ASSOCIATED WITH A MID LVL S/W TROUGH AND THE BROAD ASCENDANT REGION AHEAD OF THE UPPER WAVE WHICH WILL SPREAD ACROSS FL LATER TONIGHT INTO WED MORNING. APPEARS SFC WARM FRONTAL BOUNDARY IS LYING FROM NEAR KTIX-KORL INTO SRN LAKE COUNTY AROUND 00Z AND SHOULD LIFT SLOWLY NWD OVERNIGHT.
A LOW PRESSURE SYSTEM OVER THE NORTHEASTERN GULF OF MEXICO WILL INTENSIFY AND MOVE EAST-NORTHEASTWARD ACROSS THE FLORIDA PENINSULA OVERNIGHT THROUGH WEDNESDAY NIGHT.
847 PM PDT TUE APR 28 2015 An approaching cold front will lead to an increase in winds and much cooler temperatures through Wednesday, along with a chance for showers and a possible thunderstorm mainly tonight. /Kelch 00Z TAFS: Dry conditions will make way for a cold front that will pass through KEAT this evening and across the remainder of the area tonight.
THE COLD FRONT HAS MOVED THROUGH MOST OF THE AREA BY MID AFTERNOON. A QUIET PERIOD AHEAD AS HIGH PRESSURE WILL BUILD IN FROM THE DAKOTAS. DRIER AIR WILL SURGE IN WITH DEW POINTS FALLING INTO THE LOW 30S. BUT A FEW ISOLATED SPOTS MAY APPROACH THE FREEZING MARK IF WINDS GO CALM OVERNIGHT. CLEAR SKIES WITH TEMPERATURES WARMING QUICKLY IN THE MORNING AND HIGHS TOPPING OUT IN THE LOW 70S IN WESTERN MINNESOTA.
A LOW PRESSURE SYSTEM WILL CONTINUE EAST WITH RAIN CHANCES INCREASING SOUTH TO NORTH IN THE EARLY MORNING HOURS. CHATTANOOGA AIRPORT, TN 52 64 50 70 / 80 80 20 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 49 61 49 66 / 50 80 50 50 OAK RIDGE, TN 50 61 49 67 / 40 70 50 40 TRI CITIES AIRPORT, TN 43 61 47 62 / 20 70 50 70.
643 PM CDT TUE APR 28 2015 MAP ANALYSIS INDICATES AN UPPER TROPOSPHERIC LOW NEARING THE LOWER MISSISSIPPI VALLEY. WITH UPPER TROPOSPHERIC RIDGING BUILDING INTO THE WESTERN CONUS. OPERATIONAL GFS AND EC ALL SUGGEST THE UPPER TROPOSPHERIC RIDGE OVER THE WESTERN CONUS WILL MOVE EAST THROUGH THE NEXT 24 HOURS.
730 PM EDT TUE APR 28 2015 HIGH PRESSURE OVER THE REGION WILL KEEP DRY AND SEASONABLE WEATHER INTO WEDNESDAY.
IN RESPONSE TO AN APPROACHING UPPER-LEVEL TROUGH THAT CONTINUES TO BECOME MORE OF AN OPEN WAVE.
646 PM CDT TUE APR 28 2015 SATELLITE IMAGERY INDICATES AN UPPER LOW NOW SPIRALING AND TRUDGING SLOWLY EAST ALONG THE RED RIVER REGION. MVFR CLOUDS ARE IN THE PROCESS OF ERODING AT AREA TAF SITES AS SUBSIDENCE AND DRIER AIR SPREADS IN ON THE BACK SIDE OF THE LOW. /ISSUED 303 PM CDT TUE APR 28 2015/ AFTER SOME CLOUDS AND CONSIDERABLY COOLER TEMPERATURES ALONG WITH SCATTERED LIGHT SHOWERS. WATER VAPOR IMAGERY SHOWS THE UPPER TROUGH RESPONSIBLE FOR STORMINESS ACROSS THE REGION LIFTING OFF TO THE NORTHEAST WITH DRIER AIR MOVING IN FROM THE WEST. THE EXTENSIVE LOW CLOUDINESS WILL LINGER THROUGH EVENING BUT WITH THE DEPARTURE OF THE UPPER TROUGH. IF THE HIGH AT DFW REMAINS AT OR BELOW 61.
ON WEDNESDAY THE CONVECTION SHOULD MOVE ACROSS THE AREA DURING THE MORNING AND EXIT TO THE SOUTHEAST DURING THE EARLY AND MID- AFTERNOON AS THE COLD FRONT MOVES ACROSS THE REGION. SOUTHERLY WINDS WILL VEER TO SOUTHWEST AND WEST ON WEDNESDAY AND THEN NORTHWEST WEDNESDAY NIGHT AS A COLD FRONT MOVES ACROSS THE WATERS.
607 PM CDT TUE APR 28 2015 WEAK UPPER TROUGH STRETCHING FROM NORTHEAST MINNESOTA INTO CENTRAL NEBRASKA AT 19Z IS EXPECTED TO CONTINUE TO TRACK SLOWLY SOUTHEAST THROUGH THE EVENING RESULTING IN SCATTERED TO BROKEN LAYER OF MID CLOUDS.
A COLD FRONT IS MOVING ACROSS THE REGION THIS EVENING WITH GUSTY WINDS BETWEEN 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. CONVECTIVE SHOWERS WILL DEVELOP AHEAD OF AND IN ASSOCIATION WITH THE COLD FRONT.
HIGH TEMPERATURES ON WEDNESDAY WILL REACH INTO THE LOWER TO MID 60S. EXCEPT IN THE LOWER TO MID 50S CLOSER TO THE LAKE MICHIGAN SHORELINE. WEAK LL THERMAL RIDGING AHD OF THIS FTR ALG W/AT LEAST PARTIAL MORNING INSOLATION AND SOMEWHAT WARMER START FOR MOST AND SHLD YIELD TEMPS SIMILAR TO THIS AFTN.
/61/ /ISSUED 656 PM CDT TUE APR 28 2015/ IN RESPONSE TO AN APPROACHING UPPER-LEVEL TROUGH THAT CONTINUES TO BECOME MORE OF AN OPEN WAVE.
MINOR UPDATE TO REMOVE THUNDER ACROSS HARNEY COUNTY WHERE COLD FRONT CROSSED AROUND 7 PM PDT. PWS AT MEDFORD WERE NEARLY DOUBLE OURS AS THE COLD FRONT PUSHED THROUGH W OREGON. VFR WITH BKN HIGH CLOUDS MOVING IN WITH A DRY COLD FRONT.
THE LOWER CLOUDS ARE EXPECTED TO SCATTER OUT BY AROUND 19Z AT MSL AND 23Z AT HSV.
1006 PM EDT TUE APR 28 2015 HIGH PRESSURE OVER THE GREAT LAKES WILL KEEP DRY WEATHER ACROSS THE REGION THROUGH WEDNESDAY.