Aikyam-Lab/Synoptic-Bench huggingface dataset:
SOUTHWEST WINDS 5-10 KTS WILL OCCUR BETWEEN THESE TWO FEATURES UNTIL A COLD FRONT ARRIVES JUST BEFORE MIDDAY AT DFW AREA AIRPORTS AND IN THE AFTERNOON HOURS ACROSS WACO. WINDS WILL SHIFT NNW 15-20 KTS BEHIND THE COLD FRONT. THE VEER NORTHERLY AND DIMINISH BELOW 10 KTS BY TUESDAY EVENING AS HIGH PRESSURE FILLS BACK INTO THE AREA. SOUTHERLY FLOW WILL BRIEFLY RETURN TO THE REGION TUESDAY MORNING BEFORE ANOTHER WEAK COLD FRONT MOVES ACROSS NORTH TEXAS TUESDAY AFTERNOON.
1105 PM MST MON FEB 15 2016 WINDS HAVE BEEN ON THE STEADY DECLINE THIS EVENING AS THE COLD FRONT MARCHES SOUTH ACROSS THE PLAINS. EXTENDED THE HIGH WIND WARNING TO EAST LARAMIE COUNTY AND ISSUED A WIND ADVISORY FOR KIMBALL COUNTY THROUGH THE EVENING. DECIDED TO EXTEND THE HIGH WIND WARNING OVER THE WIND PRONE AREAS THROUGH THAT TIME. THE NICEST DAY OF THE WEEK IS STILL LOOKING LIKE WEDNESDAY AS THE RIDGE AXIS MOVES OVERHEAD AND WINDS WEAKEN AND BECOME MORE SOUTHERLY/SOUTHWESTERLY.
DRAGGING A COLD FRONT THROUGH THE AREA. ANOTHER WEAK WAVE WILL PUSH A WARM FRONT THROUGH MUCH OF THE CWA AS WESTERLY WINDS BECOME BREEZY. HIGHS WILL RANGE FROM THE LOWER 40S ACROSS CENTRAL SD TO THE LOWER 50S FARTHER WEST.
1152 PM CST MON FEB 15 2016 Fog and much of the low cloud cover finally cleared out of the area by early this afternoon, giving way to partly sunny skies for most. Tuesday should feature a pretty substantial temperature gradient over the region, as lingering cloud cover over the eastern Ozarks and central Missouri keeps temperatures in the low to mid 40s. Wednesday will begin the first of several dry and progressively warmer days across the region, as northwest flow aloft gives way to rising heights and increasingly gusty southwest winds at the surface. Temperatures Wednesday should range from the low to mid 50s east to low 60s west.
A MODEST SURFACE COLD FRONT WILL PASS SOUTHWARD SHORTLY AFTER DAYBREAK TUESDAY FOLLOWED BY GUSTY WINDS MAINLY LATE IN THE MORNING. THEN A COLD FRONT IS EXPECTED AROUND 14Z TO 15Z TUESDAY MORNING WITH SOMEWHAT GUSTY CONDITIONS AT LEAST FOR A TIME FOLLOWING THE FRONT. /ISSUED 305 PM CST MON FEB 15 2016/ WINDS HAVE TURNED TO THE WEST-SOUTHWEST AND PICKED UP A BIT ON THE CAPROCK IN RESPONSE TO A TROUGH DIVING SOUTHEASTWARD OUT OF CANADA INTO THE NORTHERN PLAINS. A COLD FRONT WILL MOVE THROUGH THE AREA TUESDAY. THE WARM UP CONTINUES AS RIDGE MOVES OVER US ON WEDNESDAY ALSO KEEPING OUR WEATHER CALM AND DRY.
WITH A COLD FRONT EXTENDING SOUTHWARD TOWARD SW ALABAMA. AND WARM FRONT TO COASTAL S CAROLINA. LOTS OF LIGHTNING WAS NOTED IN THIS SYSTEM'S WARMER SECTOR. A WAKE LOW EFFECT PER THE LOW DEEPENING OCCURRED EARLIER. IF THE LOW CLOUDS REACH THE GROUND.
A cold front will cross the region from north to south today.
A cold front will move in from the NW turning winds to the NW around 12Z with sustained winds nearing 15kts.
CYCLONIC FLOW WILL KEEP COOLER THAN NORMAL CONDITIONS IN PLACE OVER THE AREA AND SOME OFF AND ON CHANCES FOR PRECIPITATION INTO WEDNESDAY.
THE HIGH WIND WARNINGS FOR MOST OF SOUTHWEST MONTANA HAVE BEEN CANCELLED. AT THE SURFACE, A WEAK COLD FRONT HAS SETTLED ALONG A LINE SOUTH OF KGTF THROUGH KLWT. A WARM FRONT WILL PUSH NORTHWARD THROUGH THE REGION AFTER MIDNIGHT. THUS EXPECT ANOTHER ROUND OF SHOWERS TO ACCOMPANY THE WARM FRONT. BUT THE BEST CHANCE FOR STRONG WINDS TO OCCUR WILL BE BEHIND THE WARM FRONT.
Mountain snow showers & slightly cooler temps Thur & Fri. Looking at the big picture we see a broad upper level ridge positioned over the western US today with moisture moving across Oregon into western Montana.
AS A LARGE-SCALE UPPER TROF REMAINS ANCHORED OVER THE ERN HALF OF THE CONUS. AND AN UPPER RIDGE HOLDS OVER THE WRN CONUS.
307 AM EST TUE FEB 16 2016 THE AVIATION SECTION HAS BEEN UPDATED BELOW CYCLONIC FLOW WILL KEEP COOLER THAN NORMAL CONDITIONS IN PLACE OVER THE AREA AND SOME OFF AND ON CHANCES FOR PRECIPITATION INTO WEDNESDAY.
SMALL BUBBLE OF HIGH PRESSURE HAS CLEARED OUT MOST OF THE CLOUD COVER FOR THE EVENING.
BELIEVE WE WILL BEGIN TO SEE A WARM FRONT CURRENTLY STALLED ACROSS OUR REGION NEAR A PSN. THE ORIENTATION OF THE RETURNING WARM FRONT AND SOUTHWEST FLOW ALOFT WILL CONTRIBUTE TO ELEVATED CONVECTION DEVELOPING CLOSER TO MIDNIGHT AND CONTINUING THROUGH CHRISTMAS DAY.
329 PM CST THU DEC 24 2015 WATER VAPOR IMAGERY CONTINUES TO SHOW A LARGE TROUGH OF LOW PRESSURE SPANNING NEARLY THE ENTIRE COUNTRY THIS AFTERNOON. WITH A WARM FRONT STILL STALLED OVER THE ARKLATEX. IN AREAS BLANKETED BY THE CLOUD COVER AND WARM FRONT. THE STALLED WARM FRONT WILL SLOWLY LIFT NORTH ACROSS THE ARKLATEX THIS EVENING.
UPPER LEVEL FLOW WILL MOVE FROM A WEST TO A MORE SOUTHWESTERLY DIRECTION WITH INCOMING TROUGH JUST WEST OF THE GREAT BASIN. CONDITIONS WILL BE MOSTLY CLOUDY FOR CHRISTMAS DAY MORNING AND COOLER WITH OVERNIGHT TEMPERATURES IN THE TEENS. TEMPERATURES ON CHRISTMAS DAY WILL BE COOLER WITH HIGHS HOVERING AROUND FREEZING.
322 PM CST THU DEC 24 2015 High pressure will be in control of the regions weather for Christmas Eve and through much of Christmas day.
406 PM EST THU DEC 24 2015 WV IMAGERY AND RAP ANALYSIS INDICATED A BROAD MID/UPPER LEVEL TROUGH OVER THE WEST INTO THE CNTRL CONUS RESULTING IN SW FLOW FROM THE PLAINS INTO THE CNTRL PLAINS TO THE NRN LAKES. THE RIDGE WILL BUILD INTO THE WRN LAKES WITH PARTLY TO MOSTLY SUNNY SKIES. THE WINDS WILL CARRY MUCH COLDER AIR AS AN UPPER TROUGH DROPS THROUGH SAT NIGHT INTO SUN MORNING. LOTS OF UNCERTAINTY AS THE UPPER LOW THAT WILL FORM OVER THE U. MODELS SHOW THE LONGWAVE UPPER TROUGH THAT HAS BEEN OVER THE WRN CONUS SHIFTING TO THE ERN CONUS. WITH GUSTS AS HIGH AS 45 MPH AT CMX WILL GRADUALLY DIMINISH THIS AFTERNOON AS HIGH PRESSURE OVER THE PLAINS BUILDS TOWARD THE REGION. AS HIGH PRESSURE BUILDS TOWARD THE REGION THIS EVENING.
LOW CLOUDS AND FREEZING FOG HAVE FORMED OVER EXTREME NORTHCENTRAL MONTANA WITH REDUCED VISIBILITIES ALONG THE PORTIONS OF THE HILINE. EXPECT FREEZING FOG TO PERSIST. AND A FREEZING FOG ADVISORY HAS BEEN ISSUED THROUGH CHRISTMAS MORNING FOR AREAS FROM CUT BANK TO FORT BELKNAP.
219 PM CST THU DEC 24 2015 There is a broad upper level trough over most of the conus today putting the CWA under southwest flow aloft. The upper trough is expected to deepen and strengthen over the western conus on Christmas Day.
STILL SEEING A ZONAL FLOW AT THE BASE OF A RATHER LONG PERIOD REGIONAL TROUGH.
SNOW WILL BE POSSIBLE OVER THE HIGHER ELEVATIONS INTO THE EVENING. THE CURRENT SATELLITE WATER VAPOUR IMAGE IS SHOWING A TROUGH OF LOW PRESSURE CENTERED ALONG THE WEST COAST. THIS TROUGH OF LOW PRESSURE WILL DRAG A COLD FRONT OVER THE AREA TODAY RESULTING IN SHOWERS SOME OF WHICH WILL BE HEAVY AT TIMES. SNOW LEVELS ARE CURRENTLY BETWEEN 4400 AND 5000 FEET SO WE COULD SEE SOME SNOW ON THE RIDGE LINES AND HIGHER PEAKS.
THE BROAD UPPER TROF (OF LATE) OVER THE WRN CONUS IS STILL PROGGED TO EVOLVE INTO A MORE ACTIVE PATTERN OVER THE WEEKEND AS A CUT-OFF CLOSED LOW DEVELOPS OVER THE DESERT SW BY SAT. MUCH COLDER IN THE WAKE OF THIS LOW AND ITS ASSOCIA- TED COLD FRONT FOR THE DAYS FOLLOWING. LONG RANGE PROGS INDICATING A RE-INFORCING SURGE OF COLD AIR WITH THE QUICK PASSAGE OF ANOTHER CLOSED UPPER LOW/COLD FRONT NEXT TUES.
324 PM CST THU DEC 24 2015 12Z UA ANALYSIS HAS AN 850MB COLD FRONT FROM LAKE HURON INTO NORTHERN MISSOURI AND ANOTHER FROM EASTERN KANSAS INTO NEW MEXICO. A WEAK TROF RAN FROM UPPER MICHIGAN INTO EASTERN IOWA WHILE A MORE SUBSTANTIAL TROF RAN FROM THE EASTERN DAKOTAS INTO KANSAS. 18Z SFC DATA SUGGESTS A WEAK LOW NEAR KSTJ WITH AN IMPLIED INVERTED TROF FROM THE LOW INTO IOWA. ROAD TEMPERATURES ARE STILL WELL ABOVE FREEZING OVER ALL BUT BUCHANAN. TO A DIRECT HIT OF ALL OF IOWA AND WISCONSIN WITH FREEZING RAIN.
1030 AM CST THU DEC 24 2015 Above normal temperatures are expected to continue today even as a cold front moves through the area this afternoon.
A COLD UPPER TROUGH IS MOVING INLAND TODAY AND WILL CROSS THE GREAT BASIN TONIGHT THROUGH FRIDAY. HIGH PRESSURE WILL BUILD INTO THE REGION FOR THE WEEKEND. THE COLD UPPER TROF IS DEEPENING INTO THE NWRN STATES THIS MORNING BACKING THE FLOW TO SWLY OVER OUR CWA. IT STILL APPEARS THAT THE MOST WIDESPREAD SNOW ACROSS THE CWA WILL DEVELOP TONIGHT AS THE LOOSELY ORGANIZED COLD FRONT WITH THE MAIN UPPER TROF MOVES INTO UT. SNOW TAPERS OFF FRI AFTN AS THE UPPER TROF STARTS TO SPLIT STRONGLY ALTHO SOME PRECIP COULD LINGER INTO EARLY SAT UNDER THE COLD POOL ALOFT.
A WEAK COLD FRONT OVER NORTH TEXAS WILL MOVE SOUTH INTO THE AREA TONIGHT.
TEMPERATURES SHOULD RISE INTO THE LOWER AND MID 70S IN MOST LOCATIONS LATER THIS AFTERNOON. 09Z SURFACE ANALYSIS PLACES A COLD FRONT FROM MIDDLE TENNESSEE BACK THROUGH NORTHWEST ALABAMA AND CENTRAL MISSISSIPPI. SHORT TERM MODELS INDICATE THE AFOREMENTIONED COLD FRONT WILL BECOME QUASI-STATIONARY JUST SOUTHEAST OF THE FORECAST AREA TODAY. THE SURFACE BOUNDARY IS EXPECTED TO MOVE BACK NORTH AS A WARM FRONT TONIGHT WITH SHOWERS AND THUNDERSTORMS DEVELOPING ACROSS NORTH MISSISSIPPI THIS EVENING AND SPREADING NORTH ACROSS THE REMAINDER OF THE MID SOUTH LATE TONIGHT.
THIS ACTIVITY IS WELL AHEAD OF THE WEAK COLD FRONT THAT IS SLICING SW TO NE ACROSS THE AREA. ADJUSTED HOURLY TEMPS AND DEWPOINTS FOR TODAY AS TRENDS WERE RUNNING A LITTLE BIT WARMER THAN CURRENT OBS.
300 PM CST THU DEC 24 2015 A large upper trough remains over the western and central US this afternoon. Patchy fog is possible, especially in our eastern counties closer to the center of the high.
124 PM EST THU DEC 24 2015 A COOLER AND DRIER AIRMASS WILL SETTLE INTO THE REGION TODAY INTO FRIDAY. DIMINISHING WINDS AND MAINLY DRY THIS PERIOD AS LOW LEVEL RIDGING BUILDS AND FRONTAL BOUNDARY SAGS JUST SOUTH OF THE REGION UNDER PERSISTENT SOUTHWEST FLOW ALOFT. TEMPERATURES WILL BE SIGNIFICANTLY COOLER WHEN COMPARED TO YESTERDAY GIVEN SHALLOW INFILTRATION OF MODIFIED POLAR AIR. RIDGING WILL BUILD OVER THE GRTLKS FRI IN RESPONSE TO STRONG SHRTWV MOVG INTO THE PAC NW THIS MORNING DIGGING FURTHER INTO THE SWRN CONUS.
1217 PM CST THU DEC 24 2015 WATER VAPOR IMAGERY SHOWS A LARGE TROUGH OF LOW PRESSURE SPANNING NEARLY THE ENTIRE COUNTRY THIS MORNING. A WARM FRONT IS STALLED ACROSS THE ARKLATEX. AS THIS WARM FRONT SLOWLY LIFTS ACROSS THE REGION OVER THE NEXT 24 TO 36 HOURS.
TEMPERATURES IN THE TREASURE VALLEY WILL LIKELY GET JUST ABOVE FREEZING TODAY BEFORE A COLD PATTERN SETS UP FOR TOMORROW AND THE WEEKEND. BROAD UPPER LEVEL TROUGH BEGINNING TO DIG SOUTHWARD ALONG THE WESTERN UNITED STATES THIS MORNING.
/ISSUED 1030 AM CST THU DEC 24 2015/ Above normal temperatures are expected to continue today even as a cold front moves through the area this afternoon.
NEAR TERM AND SHORT TERM SECTIONS HAVE BEEN UPDATED BELOW BRIEF LULL WITH TRANQUIL WEATHER TODAY BEFORE DEEP TROUGH IN THE WEST RELOADS AND EJECTS MULTIPLE SHORT WAVES UP BACKSIDE OF EASTERN RIDGE.
1123 AM CST THU DEC 24 2015 SOUTHERLY FLOW WILL RESUME BY AFTERNOON AS A WEAK TROUGH LIFTS NORTHWARD. AS A WARM FRONT PULLS NORTHWARD THROUGH THE MID-STATE.
SHORT TERM AND AVIATION SECTIONS HAVE BEEN UPDATED BELOW BRIEF LULL WITH TRANQUIL WEATHER TODAY BEFORE DEEP TROUGH IN THE WEST RELOADS AND EJECTS MULTIPLE SHORT WAVES UP BACKSIDE OF EASTERN RIDGE.
A weakening low level convergence axis along a surface pressure trough is the focus for this band of snow. Radar trends suggest that snow intensities are decreasing, but an incoming trough currently over western Washington/Oregon may perpetuate this band into the evening hours.
WITH TEMPS ABOVE FREEZING. /ISSUED 537 AM CST THU DEC 24 2015/ 12Z TAF CYCLE A COLD FRONT WILL PUSH THROUGH THE THREE TAF SITES BY 12Z TODAY ALLOWING FOR NORTHWEST TO NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST BY 18Z TODAY. /ISSUED 330 AM CST THU DEC 24 2015/ A COLD FRONT WILL SWEEP ACROSS THE PANHANDLES THIS MORNING. BRINGING SLIGHTLY COOLER TEMPERATURES TODAY. SO WARMER TEMPERATURES ARE EXPECTED.
DEEP LAYER RIDGING REMAINS FIRMLY ENTRENCHED ACROSS THE REGION. HIGH PRESSURE WHICH HAS BEEN PARKED NEAR TO EAST OF THE STATE IS SHOWN SLOWLY EASING IN STRENGTH BY AROUND MON/TUE. AN APPROACHING COLD FRONT AROUND TUE LOOKS TO MAKE INROADS INTO THE STATE AT MIDWEEK ACCORDING TO RECENT GFS GUID AND ONE WOULD EXPECT INCREASING RAIN CHCS ALONG AND AHEAD OF THE BOUNDARY TUE/WED. THE EURO MODEL CONTINUES TO FEATURE A STRONGER ATLC RIDGE EXTENDING TO THE ERN GULF AND KEEPS MOST ACTIVE WEATHER CONFINED N OF THE STATE THROUGH MIDWEEK. DEEP RIDGING CONTINUES OVER THE REGION. EXPECT TEMPO IFR CONDS THROUGH AT LEAST 25/13Z-14Z WITH GRADUALLY LIFTING AND BREAKING UP OF THE LOWER CLOUD DECK INTO LATE MORNING.
1254 PM EST THU DEC 24 2015 DRY CONDITIONS ARE EXPECTED TODAY AS HIGH PRESSURE MOVES INTO THE AREA BEHIND A COLD FRONT. A SMALL AREA OF HIGH PRESSURE HAS BUILD INTO THE TRI-STATE. WITH COOL HIGH PRESSURE OVER MICHIGAN.
1112 AM CST THU DEC 24 2015 As of 3 AM, a weak upper level short wave trough was quickly moving east across the central Plains. We should see a pretty mild day with highs ranging from the middle 50s around Rolla to the lower 60s across far southwestern Missouri. As this event gets going, it is quite possible that we see a fairly narrow focus for the heavy rainfall as deep tropospheric ascent will be absent outside of the low level frontal zone.
Our previous discussion mentioned the low level convergence band north of the Spokane River into the Rathdrum Prairie this morning. An upper trough digging along the NW Oregon coast seems to be diminishing the lift along this low level boundary as our mid- levels winds weaken and back.
359 PM CST THU DEC 24 2015 (Tonight and Friday) Expect ideal radiational cooling conditions overnight, with light winds, dewpoint temperatures in the low 30s to near 40, and mostly clear skies. A strong upper-level trough will develop across the Inter-mountain West during the day Friday, with a closed mid-level low developing across southern Arizona/northwestern Mexico.
THE NEXT MID LEVEL TROUGH ACROSS THE CENTRAL PLAINS WILL WORK ITS WAY TO THE SOUTHERN GREAT LAKES LATE TONIGHT INTO EARLY FRIDAY. QUIET CONDITIONS ARE EXPECTED ON FRIDAY WITH LOW LEVEL THERMAL PROFILES SLIGHTLY WARMER THAN THAT OF TODAY. GREATER INSOLATION ON FRIDAY SHOULD ALSO ALLOW FOR SLIGHTLY WARMER HIGHS ON FRIDAY GENERALLY FROM THE MID 40S FAR NORTHWEST TO THE LOWER 50S SOUTHEAST.
WITH THE UPPER LOW IN OKLAHOMA SLOWLY MAKING ITS WAY TO TO THE EAST AND NORTHEAST. AN UPPER LOW OVER THE TEXAS PANHANDLE HAS STILL LED TO SHOWERS AND A FEW ISOLATED STORMS OVER THE AREA OVERNIGHT. OUR CWA WILL REMAIN IN THE COOLER AIR ON THE NORTH SIDE OF A STATIONARY FRONT SITUATED SOUTH OF THE REGION.
A COUPLE OF WEAK CONVERGENCE BOUNDARIES CAN BE SEEN IN SURFACE ANALYSIS SOUTH OF A 1034 HIGH PRESSURE CENTERED OVER SOUTHEASTERN CANADA THIS MORNING. WITH SOME BREAKS IN THE HIGHS CLOUDS BEING HINTED AT BY MODELS AROUND NOON OR 1 PM IN NW ALABAMA.
AS RIDGE BUILDS TO NORTH. AND TROUGH BUILDS TO SOUTHEAST.
CHATTANOOGA AIRPORT, TN 70 51 66 49 / 10 20 30 40 KNOXVILLE MCGHEE TYSON AIRPORT, TN 70 49 70 48 / 0 10 20 20 OAK RIDGE, TN 69 50 71 48 / 0 10 20 20 TRI CITIES AIRPORT, TN 70 40 70 42 / 0 0 10 10.
/issued 340 AM CDT WED APR 13 2016/ (Today and Tonight) A compact upper low is currently over the southeast Texas Panhandle this morning and will track east across Oklahoma during the day. Temperatures will be warmer today, with highs ranging from the upper 60s across the Big Country, to the lower 70s elsewhere. Expect light southeast winds tonight, with overnight lows in the lower 50s.
1233 PM EDT WED APR 13 2016 HIGH PRESSURE IS EXPECTED TO BRING DRY WEATHER AND A GRADUAL WARMING TREND THROUGH THE WEEKEND. CLEAR SKIES ABOUND THIS AFTERNOON IN ADVANCE OF A WEAK SHORT WAVE TROUGH PROJECTED TO TRAVERSE THE AREA THIS EVENING.
1045 AM EDT WED APR 13 2016 HIGH PRESSURE CENTERED TO OUR NORTH AND NORTHEAST. HAVE ALLOWED FOR THE FROST/FREEZE HEADLINES TO EXPIRE THIS MORNING AS WE CONTINUE TO WARM ABOVE FREEZING AT ALL LOCATIONS. TONIGHT SHOULD BE WARMER THAN CURRENT MORNING LOWS. BUT STILL COULD BE FLIRTING WITH POTENTIAL FROST ACROSS THE NORTHERN CWA WITH TEMPS IN THE LOW TO MID 30S.
RAIN WILL ARRIVE AT THE COAST WITH A COLD FRONT BY THIS EVENING. A WINTER WEATHER ADVISORY HAS BEEN ISSUED FOR THE HIGHER PEAKS OF WESTERN SISKIYOU COUNTY AND ALSO THE SISKIYOU MOUNTAINS AND CASCADES OF SOUTHERN OREGON FROM LATE THIS EVENING THROUGH THURSDAY EVENING. SNOWFALL WILL LIKELY BE HIGHEST OVER THE HIGHER PEAKS OF WESTERN SISKIYOU COUNTY WITH AMOUNTS OF 6 TO 15 INCHES EXPECTED.
1006 AM EDT WED APR 13 2016 HIGH PRESSURE WILL TRAVEL FROM THE GREAT LAKES TO THE ATLANTIC COAST BY THE WEEKEND. DRY WEATHER WILL PERSIST AS THE HIGH MOVES SLOWLY EAST. THE CIRCULATION AROUND THE HIGH WILL ALSO BRING WARMER TEMPERATURES.
Farther west, over the Gulf of Alaska, another large trough is noted which will impact the weather across the nation later this weekend, but at least for the work week things are looking nice.
/issued 351 AM CDT WED APR 13 2016/ An upper low now moving NE toward southern OK early this morning with subsidence overspreading the region in its wake.
Some high clouds with convection over the lower Mississippi Valley may brush the far southeast CWA this afternoon, but shouldn't provide much of an obstacle to the sunshine. 08z/3am surface analysis shows ridge of high pressure extending from the eastern Great Lakes to the southern Plains. Beneath the ridge, skies are mostly clear and winds are light across central Illinois with current temperatures mainly in the middle to upper 30s. Abundant sunshine and light E/NE winds will be the rule today as the ridge remains firmly in place. As upper ridging builds over the Midwest, temperatures will continue to slowly climb through the end of the week.
910 AM EDT WED APR 13 2016 HIGH PRESSURE CENTERED TO OUR NORTH AND NORTHEAST. HAVE ALLOWED FOR THE FROST/FREEZE HEADLINES TO EXPIRE THIS MORNING AS WE CONTINUE TO WARM ABOVE FREEZING AT ALL LOCATIONS. TONIGHT SHOULD BE WARMER THAN CURRENT MORNING LOWS. BUT STILL COULD BE FLIRTING WITH POTENTIAL FROST ACROSS THE NORTHERN CWA WITH TEMPS IN THE LOW TO MID 30S.
MORNING WATER VAPOR PLACES THE CORE OF A STRONG CLOSED LOW OFF THE PACNW CARVING ESE. WITH GUSTY SOUTHWESTERLY SURFACE WINDS DEVELOPING AS FLOW ALOFT MIXES AND THE NET MSLP GRADIENT TIGHTENS IN ADVANCE OF THIS TROUGH. AS THE TROUGH PROGRESSES ON SHORE TONIGHT IT WILL CONTINUE TO AMPLIFY FORCING A PROGRESSIVE WAVE TO EJECT NE ACROSS SOUTHERN IDAHO TOMORROW MORNING. THIS DRIVING A FRONTOGENIC COLD FRONT ACROSS NORTHERN UTAH THROUGH MIDDAY AND INTO CENTRAL PORTIONS DURING THE AFTERNOON.
Rain and thunder chances increase as the weekend progresses as a slow moving upper low spins over the rocky mountain region.
1022 AM EDT WED APR 13 2016 HIGH PRESSURE IS RIDGING ACROSS SOUTH FLORIDA WITH A COLD FRONT JUST PUSHING INTO LEVY COUNTY THIS MORNING. A FRONT WILL CONTINUE TO SETTLE SOUTH ACROSS THE WATERS THROUGH THE DAY TODAY AS HIGH PRESSURE RIDGES ACROSS SOUTH FLORIDA. WITH RAIN CHANCES CONTINUING THROUGH THE END OF THE WEEK AS THE TROUGH LINGERS ACROSS THE AREA. HIGH PRESSURE WILL THEN BUILD INTO THE AREA AND CLEAR OUT THE AREA.
506 AM MDT WED APR 13 2016 SOME VERY TEMPORARY RIDGING BRINGING SUBSIDENCE FOR THE FIRST PART OF TODAY ACROSS THE CENTRAL ROCKIES. BUT A BROAD TROUGH WILL SAG SOUTHEAST INTO UTAH BY THIS EVENING BRINGING SOME INSTABILITY TO THE REGION.
DRY AIR ASSOCIATED WITH LINGERING HIGH PRESSURE AT LOWER LEVELS WILL KEEP PRECIPITATION POTENTIAL LIMITED TO MAINLY VIRGA OR SPRINKLES. WITH THE DRY LOW LEVEL AIR/SURFACE RIDGING IN PLACE. AS AMPLIFIED UPPER LEVEL RIDGE DEVELOPS.
1241 PM EDT WED APR 13 2016 HIGH PRESSURE OVER EASTERN CANADA WILL BE THE MAIN WEATHER FEATURE THROUGH THE REMAINDER OF THE WEEK. THE HIGH WILL THEN MOVE SOUTHEASTWARD OVER OUR AREA FOR THE WEEKEND.
629 AM CDT WED APR 13 2016 AN UPPER LEVEL RIDGE WILL QUICKLY BUILD ACROSS THE REGION TODAY. THIS RIDGE. HI-RES MODELS SHOW ONLY THE MOBRIDGE AREA WILL SEE PCPN. BUT WITH INCREASING SOUTHERLY WINDS THANKS TO AN APPROACHING LOW PRESSURE SYSTEM.
1157 AM EDT WED APR 13 2016 HIGH PRESSURE WILL GRADUALLY BUILD EAST TOWARD THE REGION TODAY THROUGH THURSDAY.
THINK VFR CIGS MAY BE POSSIBLE IN THE AFTERNOON AS SHORT WAVE TROUGH MOVES EAST. SUBSIDENCE FROM THE PASSING CONVECTION AND SHORT WAVE TROUGH MAY LIMIT CLOUD COVER. STILL MAY SEE SOME ISOLATED TO SCATTERED COVERAGE DURING THE AFTERNOON WITH THE FRONTAL BOUNDARY NEAR THE COAST AND THE UPPER LOW SHEARING OUT AS IT MOVES ACROSS THE SOUTHERN PLAINS.
LOW PRESSURE ACROSS THE GULF STATES WILL LIFT NORTHWARD LATE THIS AFTERNOON.
HIGH PRESSURE THAT HAS BEEN IN CONTROL WAS MOVING NORTHEASTWARD ACROSS NEW ENGLAND. IT LOOKS LIKE ANY SHOWERS ASSOCIATED WITH THE APPROACHING LOW PRESSURE WILL HOLD OFF.
1009 AM CDT WED APR 13 2016 UPPER LEVEL LOW SPINNING OVER SOUTHERN OKLAHOMA ACCORDING TO LATEST WATER VAPOR IMAGERY. MAIN UPPER LEVEL DISTURBANCE ROTATING AROUND THIS LOW IS PUSHING OFF TO THE EAST OF THE FORECAST AREA. THE SHORT WAVE THAT IS RESPONSIBLE WILL PUSH EAST OF THE AREA DURING THE MIDDLE OF THE DAY WITH RAIN CHANCES DECREASING FROM WEST TO EAST, HOWEVER SCATTERED SHOWERS AND STORM CAN STILL BE EXPECTED OVER LOWER ACADIANA THROUGH THURSDAY AS THE COLD FRONT SLOWLY MOVES EAST AND MOISTURE CONTINUES TO WRAP INTO A SLOW MOVING UPPER LOW OVER AR.
ON THURSDAY A DEEP LOW PRESSURE SYSTEM WILL MOVE ACROSS THE GREAT BASIN AND BRING GUSTY ONSHORE WINDS.
923 AM EDT WED APR 13 2016 HIGH PRESSURE WILL REMAIN OVERHEAD THROUGH THE WEEKEND.
1031 AM CDT WED APR 13 2016 WV IMAGERY SHOWS UPPER LOW DRIFTING EWD ACROSS OK THIS MORNING. LOW VFR CIGS SHOULD DEVELOP BY MIDDAY WITH THE POTENTIAL FOR SCT -SHRA DEVELOPMENT OVER EXTREME NE TX/SW AR/SE OK AHEAD OF A WEAK UPPER LEVEL LOW PRESSURE AREA THAT WILL ADVANCE SLOWLY E ACROSS OK. ISOLATED -SHRA WILL REMAIN POSSIBLE OVERNIGHT MAINLY ALONG/N OF I-20 AS THE LOW SHIFTS INTO AR. /ISSUED 441 AM CDT WED APR 13 2016/ UPPER LOW MOVG SLOWLY EAST ALONG RED RIVER VALLEY OF OK/TX.
AN UPPER TROUGH WILL BRING SHOWERY WEATHER TO WESTERN WASHINGTON TODAY THROUGH THURSDAY.
AN UPPER LEVEL RIDGE WILL QUICKLY BUILD ACROSS THE REGION TODAY. THIS RIDGE. HI-RES MODELS SHOW ONLY THE MOBRIDGE AREA WILL SEE PCPN. BUT WITH INCREASING SOUTHERLY WINDS THANKS TO AN APPROACHING LOW PRESSURE SYSTEM.
645 AM CDT WED APR 13 2016 08z/3am surface analysis shows ridge of high pressure extending from the eastern Great Lakes to the southern Plains. Beneath the ridge, skies are mostly clear and winds are light across central Illinois with current temperatures mainly in the middle to upper 30s. Abundant sunshine and light E/NE winds will be the rule today as the ridge remains firmly in place. As upper ridging builds over the Midwest, temperatures will continue to slowly climb through the end of the week.
1125 AM CDT WED APR 13 2016 THICK MID AND HIGH CLOUDS HAVE SPREAD ACROSS THE AS AN UPPER LEVEL DISTURBANCE MOVES ALONG THE GULF COAST AND A WEAK UPPER LOW TRACKS EAST ACROSS THE SOUTHERN PLAINS. HAVE INTRODUCED 20 POPS ACROSS EASTERN ARKANSAS AS AN UPPER LEVEL LOW PRESSURE WILL MOVE INTO NORTHWEST ARKANSAS THIS AFTERNOON. WILL CARRY LIKELY POPS FOR THESE AREAS WITH CHANCE POPS ELSEWHERE AS THE UPPER LEVEL LOW BEGINS TO MOVE INTO THE MIDSOUTH. THE UPPER LEVEL LOW WILL MEANDER OVER THE MIDSOUTH THURSDAY NIGHT AS THE LOW BECOMES TRAPPED UNDERNEATH A BUILDING UPPER RIDGE.
A FAST MOVING RIDGE OF HIGH PRESSURE WILL LEAD TO A DAY OF DRY AND WARM WEATHER. A PASSING LOW PRESSURE SYSTEM IS FORECAST TO BRING STRONG SOUTHWEST WINDS.
IN THE LOW LEVELS OF THE ATMOSPHERE. AN AREA OF HIGH PRESSURE WILL BE LOCATED NEAR THE YUCATAN PENINSULA TODAY.
839 AM EDT WED APR 13 2016 HIGH PRESSURE IS EXPECTED TO BRING DRY WEATHER AND A GRADUAL WARMING TREND THROUGH THE WEEKEND. ABUNDANT INSOLATION SHOULD MIX THIS INVERSION OUT RATHER QUICKLY IN ADVANCE OF A WEAK SHORT WAVE TROUGH PROJECTED TO TRAVERSE THE AREA THIS EVENING.
1046 AM MDT WED APR 13 2016 SOME VERY TEMPORARY RIDGING BRINGING SUBSIDENCE FOR THE FIRST PART OF TODAY ACROSS THE CENTRAL ROCKIES. BUT A BROAD TROUGH WILL SAG SOUTHEAST INTO UTAH BY THIS EVENING BRINGING SOME INSTABILITY TO THE REGION.
TEMPERATURES WILL THEN WARM THROUGH THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION. NEAR ZONAL FLOW CONTINUES ACROSS CALIFORNIA AS A DEVELOPING LOW PRESSURE SYSTEM TRACKS TOWARD THE PACIFIC NORTHWEST COAST. WHILE A SWATH OF HIGH CLOUDS ROTATES UNDERNEATH THE LOW AND PUSHES INLAND OVER CALIFORNIA. AS THE LOW NEARS THE COAST BY LATE TONIGHT.