Aikyam-Lab/Synoptic-Bench huggingface dataset:
743 AM CST MON FEB 23 2015 ARCTIC HIGH PRESSURE AREA WILL CONTINUE TO SETTLE ACROSS THE REGION TODAY WITH COLD ADVECTION CONTINUING TO HAVE A TIGHT GRIP ON TEMPS OVER THE PLAINS.
COLD MORNING TEMPERATURES WILL QUICKLY WARM UP LATER THIS MORNING AS WINDS INCREASE MIXING AND WARMER MID LEVEL AIR PUSHES EAST INTO THE DAKOTAS. CLOUDS WILL BE ON THE INCREASE ESPECIALLY LATER TODAY WHEN LOW STRATUS MOVES INTO THE NORTH AS WINDS SHIFT NORTHWESTERLY AND WILL CONTINUE SOUTH TONIGHT AHEAD OF SFC COLD FRONT. AFTER THE PASSAGE OF A COLD FRONT MONDAY NIGHT A BAROCLINIC ZONE SETS UP ACROSS WESTERN NORTH DAKOTA ON TUESDAY.
Light freezing rain and drizzle with occasional sleet will be possible at KABI, KJCT and KBBD through the remainder of the morning. /ISSUED 417 AM CST Mon Feb 23 2015/ (Today and tonight) An upper disturbance traversing the area in the southwest flow aloft this morning will continue the chance of light freezing rain and sleet over the forecast area today. With high temperatures remaining at or below freezing over the entire area, any falling precipitation will remain frozen. Highs today will be in the mid 20s over the Big Country with upper 20s over the central CWA and around the freezing mark along the interstate 10 corridor. 15 Temperatures will finally warm above freezing on Tuesday.
REMAINING CHILLY OVER THE INTERIOR IN THE LOWER 40S BY DAYBREAK. WEAK HIGH PRESSURE RIDGE WILL SETTLE SOUTH ACROSS FL.
INCLUDE THE HIGH FIRE DANGER THREAT THROUGH THE EARLY EVENING.
EVEN WITH A COOL NORTHEAST FLOW AROUND THE RIDGE WE ARE WARMING NICELY WITH THE AMPLE SUNSHINE.
SEEMS THAT REGION STANDS THE HIGHEST PROBABILITY OF EXPERIENCING 30 MPH OR HIGHER SUSTAINED WINDS AND/OR GUSTS TO 45 MPH OR HIGHER.
EXITING LOW PRESSURE SYSTEM AFTER WHICH PRECIPITATION WILL TAPER OFF.
AS A COLD FRONT MAKES ITS WAY SOUTHEAST ACROSS OKLAHOMA AND NORTH TEXAS.
Temps were in the 20s for most areas save central MO where readings were in the low 30s. A surface warm front extended from southern NE to northeastern OK. NW flow prevailed aloft with an upper level RIDGE over the Plains. The surface warm front is expected to make steady progress today into central MO by late afternoon. The high levels of sunshine and what should be a stout southerly surface flow will allow temps to surge today, especially in central MO where the surface warm front is expected to reach. Forecasted values that were around the warmer MAV MOS for IL, yielding 45-50F for maxes, and went up to a few degrees above the MAV MOS for MO, yielding low 50s near the MS river to the low 60s in central MO.
GIVEN THIS ALONG WITH THE LATEST MODEL SOUNDINGS WILL FAVOR TEMPERATURES TONIGHT LITTLE WARMER THAN WHAT THE LATEST MOSGUIDE,MAV, AND MET GUIDANCE WAS SUGGESTING. A REINFORCEMENT OF COLDER AIR WILL INVADE WESTERN KANSAS EARLY THURSDAY MORNING AS A SECONDARY COLD FRONT, WHICH WAS LOCATED ACROSS NORTH DAKOTA AND MONTANA EARLIER THIS MORNING, CROSSES WESTERN KANSAS.
A MID-LEVEL SHORT WAVE TROUGH IS EXITING THE AREA AT MIDDAY WITH STRONG SUBSIDENCE AND MIXING IN ITS WAKE. HIGHS THURSDAY WILL HOLD IN THE LOW TO MIDDLE 40S WHICH IS ACTUALLY CLOSE TO NORMAL FOR LATE JANUARY.
BRECKENRIDGE. A COLD FRONT ARRIVES TONIGHT BRINGING MUCH COOLER TEMPERATURES. COOLER TEMPERATURES WILL BE FELT BEHIND THE FRONT BUT TEMPERATURES WILL NOT CONTINUOUSLY FALL THROUGH THE DAY.
1140 AM CST Wed Jan 28 2015 Low pressure currently over the central Plains will provide the main weather feature for today ad tonight. Thin high clouds this morning should thicken as the low approaches, then lower cloud will increase overnight as the low center and warm front approach. Latest surface analysis indicates high pressure just off to our east which is expected to shift further away from our area during the day. This to bring a cold front east across IL overnight and into central Indiana by midday Thu. Strong low level jet with 850 mb winds 40-50 kts to continue gusty winds tonight, then gusty south winds turn WNW behind cold front Thu. Highs Thu in upper 30s from I-74 north and mid 40s in southeast IL with temps likely slipping behind cold front during afternoon.
A COLD FRONT WILL THEN FOLLOW AFTER MIDNIGHT WITH THE WINDS SWINGING AROUND TO THE NORTH. THE UPPER LOW CURRENTLY OFF THE CALIFORNIA COAST IS FORECAST TO DIP A LITTLE FARTHER SOUTH THAN PREVIOUSLY FORECAST SHIFTING SOME OF THE BEST LARGE SCALE LIFT TO THE SOUTH OF THE AREA.
A weak cold front is also crossing the International Border this morning and as it pushes across north-central and central Montana, lowering cigs are expected, but VFR conditions should prevail.
BUT FOR NOW WILL HOLD OFF ON ANY WIND ADVISORY AS CRITERIA IS BORDERLINE AND THE HIGHEST WIND SPEEDS DO NOT LAST ALL THAT LONG. UPDATED THE FORECAST FOR PATCHY FREEZING DRIZZLE ACROSS THE NORTH THROUGH 00 UTC. PROFILES SHOW A SATURATED LOWER LEVEL AND WITH MOST OF THE MORNING AND AFTERNOON BELOW FREEZING ACROSS THE NORTH DO EXPECT TO SEE SOME LIGHT FREEZING DRIZZLE. FORECAST HIGHLIGHTS IN THE SHORT TERM PERIOD WILL BE COOLER TEMPERATURES. ZONAL FLOW ALOFT WITH THE UPPER LEVEL RIDGE FLATTENING ACROSS THE GREAT PLAINS IN RESPONSE TO SOUTHERN AND NORTHERN STREAM S/WV'S CROSSING THE ROCKIES. SOUTH/SOUTHEASTERLY RETURN FLOW AHEAD OF THE LOW HAS MAINTAINED LOW STRATUS AND/OR FOG ACROSS EASTERN NORTH DAKOTA SINCE YESTERDAY EVENING. SURFACE WINDS BECOME MORE NORTHWESTERLY AND INCREASE THROUGH THE MORNING INTO THE AFTERNOON BEHIND A STRONG SFC COLD FRONT.
331 PM EST WED JAN 28 2015 HIGH PRESSURE WILL BUILD IN FROM THE WEST TONIGHT AND CREST OVER THE AREA ON THURSDAY.
REPORTS ALSO OF FREEZING DRIZZLE IN THE MINTO AREA SOUTH OF GRAFTON AND ALSO NEAR HALLOCK. ADDED FZDZ THRU THE AFTN IN DVL BASIN/NRN RRV AS LOW LEVEL COLD AIR DROPS SOUTH AND COOLS AND CONTINUES TO MOISTEN THE LOWEST LAYERS WHILE MID LAYERS ARE DRY. HIGH PRESSURE BUILDS INTO THE FA THURSDAY NIGHT.
WHILE THE MID TO UPPER LEVEL RIDGE AXIS WILL REMAIN OVER MEXICO INTO THE SOUTHERN ROCKIES. A A COUPLE OF SHORT WAVE TROUGHS OVER THE NORTHERN PLAINS AND CANADIAN PRAIRIE PROVINCES WILL MERGE AND DEEPEN THE UPPER TROUGH OVER THE GREAT LAKES REGION ON THURSDAY.
1210 PM PST WED JAN 28 2015 HIGH CLOUDS AND SLIGHTLY WARMER WEATHER TODAY.
335 PM CST WED JAN 28 2015 LOW PRESSURE JUST WEST OF KENORA AT MID AFTERNOON MOVING EAST. LOW LEVEL MOISTURE LOOKS TO REMAIN IN PLACE TONIGHT WITH BUFKIT SOUNDINGS SHOWING THE POTENTIAL FOR SOME PATCHY FREEZING DRIZZLE/FLURRIES IF ANY PRECIP FALLS. HIGH PRESSURE AND DRIER COLDER AIRMASS MOVING IN SHOULD ALLOW FOR SOME CLEARING.
231 PM CST Wed Jan 28 2015 Models continue to show the next upper level low moving into northwestern Mexico by the weekend bringing widespread precipitation to our area.
1207 PM EST WED JAN 28 2015 CROSSING LOW PRESSURE WILL BRING A WINTRY MIX THURSDAY. RIDGE CONTINUES TO DRIFT EASTWARD TONIGHT AND WAA WILL BE ONGOING AHEAD OF THE UPPER LEVEL SYSTEM. WAA CONTINUES AHEAD OF BOUNDARY AS LOW LEVEL JET WILL PULL WARMER AIR NORTHWARD. COLD FRONT QUICKLY CLEARS THE AREA THURSDAY EVENING AND MUCH COLDER AIR WILL PLUNGE BACK INTO THE REGION.
TEMPERATURES THIS AFTERNOON HAVE RISEN INTO THE UPPER 70S AND WILL CONTINUE TO WARM A FEW DEGREES INTO THE LOWER 80S. A TROUGH OVER THE NORTHERN PLAINS WILL DRAG A COLD FRONT THROUGH CENTRAL TEXAS LATE TOMORROW MORNING INTO THE AFTERNOON HOURS. COOLER AIR BEGINS TO FILTER INTO THE AREA THURSDAY NIGHT WITH LOWS DROPPING INTO THE MID 40S.
THIS HIGH SLIDING TO THE EAST HAS RESULTED IN LIGHT/VARIABLE WINDS THIS MORNING. MID AFTERNOON HIGH TEMPERATURES HAVE RISEN INTO THE LOW/MID 50S. A NW FLOW CONTINUED FROM THE NE PLAINS TO THE SE COAST AS WEAK UPPER RIDGING MOVES ACROSS THE DEEP SOUTH. ALONG WITH A UPPER TROUGH NOW PROGRESSING EASTWARD ACROSS THE EASTERN PLAINS WILL BRING INCREASING CLOUDS AND A CHANCE OF RAIN TO THE AREA BEGINNING TOMORROW. A COLD FRONT SHOULD MOVE ACROSS THE AREA SUN EVENING. HIGHS DURING THE WEEKEND WILL REMAIN A TAD COOLER THAN NORMAL. HIGH PRESSURE GRADUALLY MOVING E ACROSS THE OH VALLEY WILL MAINTAIN VFR CONDS WELL INTO THE OVERNIGHT HRS. AS A WEAK COLD FRONTAL APPROACHES THE AREA DURING THE DAY.
THE HIGH PRESSURE RIDGE TO THE NORTHWEST OF THE REGION WILL SETTLE OVERHEAD TONIGHT INTO THURSDAY. WITH A COOLER AIRMASS ALREADY IN PLACE.
THE LOW PRESSURE DISTURBANCE THAT MOVED NORTHWARD THROUGH NV YESTERDAY HAS BEEN PICKED UP BY THE WESTERLY FLOW OVER THE NORTHERN TIER STATES. AS THE TROUGH AXIS PASSES LATER THIS MORNING A NORTHWEST FLOW WILL DEVELOP WHICH WILL COMBINE WITH THE STILL MOIST AIR MASS TO KEEP AREAS OF PRECIPITATION OVER THE FAVORED NORTHERN MOUNTAINS.
1024 AM CST WED JAN 28 2015 UPDATED THE FORECAST FOR PATCHY FREEZING DRIZZLE ACROSS THE NORTH THROUGH 00 UTC. PROFILES SHOW A SATURATED LOWER LEVEL AND WITH MOST OF THE MORNING AND AFTERNOON BELOW FREEZING ACROSS THE NORTH DO EXPECT TO SEE SOME LIGHT FREEZING DRIZZLE. FORECAST HIGHLIGHTS IN THE SHORT TERM PERIOD WILL BE COOLER TEMPERATURES. ZONAL FLOW ALOFT WITH THE UPPER LEVEL RIDGE FLATTENING ACROSS THE GREAT PLAINS IN RESPONSE TO SOUTHERN AND NORTHERN STREAM S/WV'S CROSSING THE ROCKIES. SOUTH/SOUTHEASTERLY RETURN FLOW AHEAD OF THE LOW HAS MAINTAINED LOW STRATUS AND/OR FOG ACROSS EASTERN NORTH DAKOTA SINCE YESTERDAY EVENING. SURFACE WINDS BECOME MORE NORTHWESTERLY AND INCREASE THROUGH THE MORNING INTO THE AFTERNOON BEHIND A STRONG SFC COLD FRONT.
HIGH PRESSURE REMAINING NORTH OF THE AREA TONIGHT WILL LEAD TO A COLD NIGHT OVER MUCH OF THE AREA. AS USUAL WHEN WINDS BEGIN TO TURN NE DURING THE NIGHT, A TRICKY LOW TEMPERATURE FORECAST BUT FEEL CONFIDENT THAT MOST AREAS WILL BE AS COOL, IF NOT A DEGREE OR TWO COOLER, THAN LAST NIGHT AS THE EVENING WILL GET OFF TO A CHILLY START DUE TO THE DAYTIME TEMPS IN THE 60S AND VERY LOW DEWPOINTS IN THE 30S CAUSING TEMPERATURES TO DROP RAPIDLY AROUND SUNSET. HIGH PRESSURE WILL SHIFT SOUTH AND EAST ON THURSDAY, WITH GRADIENT FLOW BECOMING NE AND DECREASING IN SPEED. THE HIGH WILL SETTLE RIGHT OVER CENTRAL/SOUTH FLORIDA THURSDAY NIGHT AS ANOTHER FRONTAL SYSTEM MAKES ITS WAY INTO THE FLORIDA PANHANDLE.
LIGHTER WINDS AT KLFK MAY ALLOW FOR SOME BRIEF VLIFR AHEAD OF A COLD FRONT THAT WILL MOVE OVER THE ARKLATEX. EXPECT MOSTLY SUNNY SKIES TODAY AS NORTHWEST FLOW ALOFT PREDOMINATES ON THE EAST SIDE OF AN UPPER-RIDGE ACROSS TEXAS AND OKLAHOMA. DRY FRONTAL BOUNDARY TO MOVE ACROSS THE REGION ON THURSDAY WITH COOL HIGH PRESSURE BUILDING IN ITS WAKE. UPPER-TROUGH FROM BAJA PENINSULA OF MEXICO TO THE GREAT LAKES TO ALLOW FOR SOUTHWEST FLOW OF PACIFIC MOISTURE ACROSS THE REGION.
224 PM MST WED JAN 28 2015 EARLY AFTERNOON WATER VAPOR IMAGERY SHOWED THE UPPER LEVEL TROUGH CROSSING THE HIGH PLAINS. WITH ITS ASSOCIATED SURFACE COLD FRONT THROUGH THE NE PANHANDLE. DEPICTING A PROGRESSIVE LARGE SCALE FLOW ACROSS THE LOWER 48. UPPER TROUGH TRACKS EAST ACROSS THE GREAT PLAINS AND MIDWEST THROUGH THURSDAY. DRIER NORTHWESTERLY FLOW DOWNSTREAM OF INTERMOUNTAIN WEST UPPER RIDGE WILL BECOME THE DOMINANT FEATURE.
351 PM EST WED JAN 28 2015 HIGH PRESSURE WILL MOVE IN FROM THE OHIO VALLEY TONIGHT AND OFFSHORE ON THURSDAY.
CONTINUED QUIET WEATHER PATTERN FOR SOUTH TEXAS AS H5 RIDGE REMAINS IN PLACE AHEAD OF THE LARGE SCALE TROUGH OFF THE WEST COAST. WEAK RIDGING FINALLY SHIFTS TO THE EAST ALLOWING MINOR RETURN FLOW OFF THE GULF. HAVE UPPED TEMPS TODAY GENERALLY INTO THE LOWER 80S.
Temperatures behind the front will certainly be cooler with highs on Thursday expected in the 40s to around 50 with lows in the mid to upper 20s on Thursday night.
AND THURSDAY A FEW POCKETS OF CLEAR SKIES DEVELOPED OVERNIGHT AS A HIGH PRESSURE RIDGE DRIFTED OVER THE STATE. ANY CLEARING WILL BE BRIEF AS WIDESPREAD STRATUS OVER AREAS TO THE WEST AND AHEAD OF AN APPROACHING TROUGH WILL SETTLE OVER THE STATE TODAY. SO LITTLE DROP OFF OF TEMPERATURES EXPECTED TONIGHT AHEAD OF A COLD FRONT. BLEND OF FORECAST SOUNDINGS SUGGEST A LIGHT MIX OF ZR-IP-S- THIS EVENING THEN GRADUALLY CHANGE TO SNOW OVERNIGHT FROM NORTHWEST TO SOUTHEAST WITH THE PASSAGE OF THE TROUGH AXIS AND COLD FRONT ALONG WITH SATURATION OF THE COLUMN TO LOWER THE WET BULB TEMP.
330 PM EST WED JAN 28 2015 HIGH PRESSURE WILL ENTER THE REGION TONIGHT AND THURSDAY.
WENT AHEAD AND CANCELLED THE HIGH WIND WARNINGS FOR SOUTHEAST WYOMING.
HIGHS TODAY SHOULD RANGE FROM THE LOWER 40S ALONG THE CUMBERLAND PLATEAU TO THE LOWER 50S OVER THE SOUTHWEST. CLOUDS INCREASE TONIGHT, AHEAD OF A COLD FRONT, BUT ATMOSPHERE REMAINS SUFFICIENTLY DRY TO ONLY WARRANT A SLIGHT CHANCE FOR SHOWERS NORTH AND WEST.
SOUTH CENTRAL SD INTO THE MISSOURI VALLEY WILL HAVE THE BEST POTENTIAL TO WARM INTO THE LOW TO MID 50S. AND WHILE THE LOW STRATUS DOES THICKEN. SURFACE TEMPERATURES WILL BE NEAR OR JUST ABOVE FREEZING IN THIS AREA. HIGH TEMPERATURES WILL BE A GOOD 10 TO 15 DEGREES COOLER THAN TODAY. LEADING TO A COLD NIGHT WITH LOWS IN THE LOWER/MID TEENS THROUGH THE EASTERN TWO THIRDS OF THE CWA. IT WILL NOT BE QUITE AS COLD WITH AN ENSUING SOUTHEASTERLY FLOW BEHIND THE EXITING HIGH PRESSURE.
958 AM PST WED JAN 28 2015 Areas of low clouds and fog will persist across portions of Inland Northwest as high pressure remains in place.
329 PM CST Wed Jan 28 2015 A low pressure system currently centered over western Iowa will track eastward across northern Illinois from around midnight to 6 a. As it does so, a warm frontal boundary followed by a cold front will push across central Illinois in quick succession. The warm front will cause temperatures to remain steady or even rise slightly through much of the night, with primarily upper 30s and lower 40s expected, followed by little increase in temperatures after sunrise as the cold front pushes east across the area. Winds will gradually turn from SSE this afternoon to SSW overnight, shifting abruptly to northwest after the cold frontal passage.
359 PM CST WED JAN 28 2015 CRYSTAL CLEAR SKIES ARE CURRENTLY PRESENT ACROSS ALL OF THE SOUTHEASTERN UNITED STATES THIS AFTERNOON WITH HIGH PRESSURE FIRMLY IN CONTROL.
A WEAK COLD FRONT WILL PUSH SOUTH THROUGH THE COLORADO PLAINS OVERNIGHT. COOLER AIR.
AND IN A FEW AREAS INTO THE LOW 80S. TOMORROW'S TEMPERATURES WILL A BIT COOLER DUE TO MORE CLOUD COVER ASSOCIATED WITH THE NEXT COLD FRONT THAT SHOULD MOVE THROUGH THE AREA THURSDAY AFTERNOON AND NIGHT.
HOWEVER SOME DATA SUGGESTS LOW CLOUDS WILL DEVELOP BEHIND A COLD FRONT EARLY THURSDAY MORNING AND COULD AT LEAST BRIEFLY RESULT IN MVFR CONDITIONS. A COLD FRONT WILL MOVE THROUGH THE REGION TONIGHT.
WILL NEED TO WATCH SURFACE TEMPERATURES SINCE PCPN WILL BE FALLING AS LIQUID AND IF IT DROPS BELOW FREEZING IT MAY CAUSE SOME VERY LIGHT SPOTTY ICING. WINDS WILL ALSO INCREASE LATER TONIGHT AS LOW PRESSURE AT THE SURFACE TRACKS ACROSS IOWA AND INTO NORTHEAST ILLINOIS BY DAYBREAK. THE STRONG NORTHWEST WINDS WILL BRING IN COOLER AIR FOR THURSDAY.
WEAK WINDS AND LIGHT WINDS WITH HIGH PRESSURE SETTLING ACROSS NRN FLORIDA WILL LEAD TO EXCELLENT RADIATIONAL COOLING CONDITIONS WITH LOWS FALLING IN THE LOW TO MID 30S ACROSS NATURE COAST (LOW 40S SOUTH). SOME ISOLD FREEZING TEMPS IS POSSIBLE IN TYPICAL COLDER LOCATIONS OF NATURE COAST. ANOTHER PICTURE PERFECT DAY ON TAP FOR THU AS HIGH PRESSURE DOMINATES AND PROVIDES SUNNY SKIES. GENERALLY VFR CONDITIONS WILL PREVAIL WITH HIGH PRESSURE AND SOMEWHAT DRY AIRMASS IN PLACE.
A CHECK ACROSS THE CWA INDICATES ANY FREEZING DRIZZLE IS QUITE LOCALIZED AT THIS POINT. THE LOW CLOUDS KEPT TEMPERATURES FROM REACHING THE FREEZING MARK AT MOST LOCATIONS. THE MAIN FOCUS FOR TONIGHT WILL BE THE POTENTIAL FOR FREEZING DRIZZLE AND ALSO THE CHANCE FOR SOME LIGHT SNOW OR SLEET/FREEZING RAIN. HAVE OPTED TO ISSUE A FREEZING RAIN ADVISORY FOR A PORTION OF NW WI. AND WITH THE PASSAGE OF A COLD FRONT LATER TONIGHT AND ON THURSDAY.
251 PM CST WED JAN 28 2015 STILL MILD AND SUNNY CONDITIONS TODAY AND THURSDAY AS CONTINENTAL HIGH PRESSURE MODERATES AND MOVES EAST. A FAST-MOVING SYSTEM MOVES THROUGH THE MIDDLE PLAINS STATES INTO THE OHIO VALLEY THURSDAY THAT USHERS CANADIAN HIGH PRESSURE SOUTHWARD.
WEAK WINDS AND LIGHT WINDS WITH HIGH PRESSURE SETTLING ACROSS NRN FLORIDA WILL LEAD TO EXCELLENT RADIATIONAL COOLING CONDITIONS WITH LOWS FALLING IN THE LOW TO MID 30S ACROSS NATURE COAST (LOW 40S SOUTH). SOME ISOLD FREEZING TEMPS IS POSSIBLE IN TYPICAL COLDER LOCATIONS OF NATURE COAST. DEWPOINTS IN THE LOW-MID 30S SUGGESTS SIGNIFICANT FROST POTENTIAL IN THESE AREAS AND FROST ADVISORY HAVE ALREADY BEEN POSTED IN NORTHERN 3 COUNTIES (EXCLUDING SUMTER) WITH WIDESPREAD FROST WORDING IN ZONES. ANOTHER PICTURE PERFECT DAY ON TAP FOR THU AS HIGH PRESSURE DOMINATES AND PROVIDES SUNNY SKIES.
COLD FRONT ARRIVES JUST BEFORE SUNRISE THURSDAY SWITCHING WINDS TO THE NORTH. A COLD FRONT WILL MOVE SOUTH INTO THE TEXAS PANHANDLE THIS AFTERNOON.
Weak cold front will continue to push south across the area this afternoon.
WHICH IS ONLY A FEW DEGREES COOLER THAN THE NORMAL MAX TEMP FOR TODAY. THE NEXT COLD FRONT SHOULD BEGIN TO MOVE ACROSS THE AREA FROM NW TO SE SHORTLY AFTER SUNRISE THURSDAY. HIGH TEMPS THURSDAY WILL BE NOTICEABLY COOLER NORTH OF A LINE FROM KJSO-KELD WHERE SOME PLACES MAY BE 15-20 DEGREES COOLER THAN TODAY.
TODAY THROUGH THURSDAY NIGHT WATER VAPOR SHOWS UPPER RIDGE AXIS OVER THE NRN PLAINS. WITH A STRONG WAVE FLATTENING THE RIDGE OVER THE NRN ROCKIES. LEE TROF HAS ADVANCED THROUGH THE WRN DAKOTAS. BUT STILL ABOUT 10-15F DEGREES COOLER THAN YESTERDAYS RECORD BREAKING WARMTH. IT WILL BE NOTICEABLY COOLER WITH TEMPS IN THE MID 30S TO MID 40S.
AS THE PRESENCE OF A SURFACE PRESSURE TROUGH AND DAYTIME HEATING AFFECT THE PRESSURE GRADIENT AND VERTICAL MIXING. AFTER A COLD FRONT MOVES THROUGH OK/N TX OVERNIGHT TONIGHT. ASSOCIATED WITH THE INCOMING COOLER AIRMASS. A COLD FRONT WILL MOVE THROUGH THE AREA BRINGING MODERATE NORTH WINDS. A COLD FRONT MOVES THROUGH THE AREA TONIGHT BRINGING A RETURN TO JANUARY.
138 PM EST WED JAN 28 2015 HIGH PRESSURE WILL MOVE OFF TO THE SOUTHEAST OF THE REGION TONIGHT.
323 PM CST WED JAN 28 2015 LOW PRESSURE OVER EASTERN NEBRASKA WILL MOVE EAST AND PASS EAST OF THE CWA BY LATER TONIGHT. FEEL THE DRIZZLE THREAT WILL END BEFORE THE SUB- FREEZING TEMPS GET INTO THE CENTRAL COUNTIES AND DID NOT PLAY WITH ANY FREEZING PRECIP OTHER THAN THE NORTHEAST. THE CONCERN WITH THIS SYSTEM IS THE STRENGTH OF THE NORTHERN SYSTEM AND THE PHASING WITH LARGE UPPER LOW IN THE SOUTHWESTERN UNITED STATES. THIS PULLED MUCH MORE MOISTURE NORTHWARD ALONG AND INVERTED TROF AND PRODUCED A LARGE AMOUNT OF SNOWFALL ACROSS IOWA.
WITH A TRAILING SECONDARY WAVE OVER EASTERN MT ASSOCIATED WITH THE MAIN COLD FRONT. WEAK ASCENT COUPLED WITH A LL MOISTURE RIDGE IS SUPPORTING A FEW SHRA OVER THE SW HALF OF THE FA.
TEMPERATURES WILL WARM RATHER QUICKLY EARLY THIS AFTERNOON -- AIDED BY RETURN FLOW IN WARM SECTOR OF DEEPENING SURFACE CYCLONE OVER THE MISSOURI VALLEY. HIGHS MAY ACTUALLY END UP BEING A DEGREE OR TWO WARMER THAN FORECASTED VALUES IN PORTIONS OF THE FORECAST AREA. SHORT TERM MODELS INDICATE MOISTURE IN THIS LAYER WILL ERODE RATHER QUICKLY AFTER SUNRISE, AND THIS IS REASONABLE GIVEN SOLAR HEATING AND THE RIDGE AXIS/DRIER AIR SHIFT EAST THIS MORNING.
949 AM PST WED JAN 28 2015 HIGH CLOUDS AND SLIGHTLY WARMER WEATHER TODAY.
A ridge of high pressure is shifting east into the Ohio Valley early this morning. 850mb temperatures will range between 13C-16C providing for afternoon highs in the upper 50s to the lower 70s across the southwestern CWA. By Thursday, the upper level trough will push east of the area leaving the region under northwest flow aloft. At the surface, strong CAA will be ongoing behind the cold front. That, accompanied with mostly cloudy skies will provide for a return to more seasonable highs in the low to mid 40s.
This will be the warmest day of the week, with a cold front arriving tomorrow. Cooler readings behind the front, with afternoon highs on Thursday ranging from near 60 along I-20 to near 70 along I-10.
A cold front will move into Southeast New Mexico and West Texas after 09z. Plains and into the region ahead of a cold front. The forecast will turn wet thereafter as a highly amplified upper trough currently off the California coast heads east.
HIGH PRESSURE WILL THEN FOLLOW FOR LATE TODAY INTO THURSDAY.
Upper ridging over the area will shift into the Great Basin later today as a weak upper trough approaches California. Some mid to high level cloudiness can be expected today as the trough approaches. Weak upper trough forecast to shift over the Sierra Nevada tomorrow and may result in a few isolated light showers or flurries over the higher terrain, south of highway 50.
A COLD FRONT WILL MOVE THROUGH THE AREA BRINGING MODERATE NORTH WINDS. A COLD FRONT MOVES THROUGH THE AREA TONIGHT BRINGING A RETURN TO JANUARY.
THIS SYSTEM WILL HELP TO ADVANCE A SURFACE COLD FRONT THROUGH THE REGION ON THURSDAY.
1248 PM EST WED JAN 28 2015 HIGH PRESSURE EXTENDING FROM THE GREAT LAKES TO THE GULF COAST WILL BUILD EAST ACROSS THE AREA TONIGHT AND MOVE OFFSHORE THURSDAY. A COLD FRONT WILL MOVE ACROSS THE REGION THURSDAY NIGHT.
THIS ARID SWATH HINTS AT THE LARGE SCALE SUBSIDENCE BETWEEN THE UPPER LEVEL RIDGE TO OUR WEST AND THE DEPARTING LONG WAVE TROUGH. HIGH PRESSURE IS FAVORED ACROSS THE SOUTHEASTERN UNITED STATES. AVAILABLE SURFACE OBSERVATIONS INDICATE HIGH PRESSURE IS SPILLING SOUTH THROUGH THE APPALACHIANS.
256 PM CST WED JAN 28 2015 ACTIVE FORECAST TONIGHT WITH COLD FRONT FRONT MOVING THROUGH THE AREA WITH STRATUS AND WINDS TO FOLLOW. MODEL SOUNDINGS SHOW A FAIR AMOUNT OF SATURATION IN THE LOW LEVELS OF THE ATMOSPHERE. ONLY CHANCE FOR PRECIPITATION WILL BE DRIZZLE OR FREEZING DRIZZLE. WITH LOW TEMPERATURES GENERALLY A FEW DEGREES BELOW FREEZING AND SURFACE TEMPERATURES AT OR JUST BELOW FREEZING. HAVE REALLY INCREASED CLOUD COVER ACROSS THE AREA AS MODEL SOUNDINGS SHOW STEEP LAPSE RATES IN THE LOW LEVELS.
Cold front moves through the region overnight tonight into early Thursday morning.
TEMPERATURES WILL WARM RATHER QUICKLY EARLY THIS AFTERNOON -- AIDED BY RETURN FLOW IN WARM SECTOR OF DEEPENING SURFACE CYCLONE OVER THE MISSOURI VALLEY. HIGHS MAY ACTUALLY END UP BEING A DEGREE OR TWO WARMER THAN FORECASTED VALUES IN PORTIONS OF THE FORECAST AREA. HIGH PRESSURE GRADUALLY MOVING E ACROSS THE OH VALLEY WILL MAINTAIN VFR CONDS WELL INTO THE OVERNIGHT HRS. AS A WEAK COLD FRONTAL APPROACHES THE AREA DURING THE DAY.
328 PM EST WED JAN 28 2015 HIGH PRESSURE WILL MOVE OFF TO THE SOUTHEAST OF THE REGION TONIGHT.
AN UPR RIDGE AXIS WL BE MOVING ACRS THE AREA ON THU. THE HIGHER ELEVATIONS WL ALSO HAVE THE CHANCE FOR SOME ISOLD TO SCT AREAS OF LIGHT SNOW THRU THE DAY THURSDAY. HIGH TEMPS ON THURSDAY ARE EXPECTED TO BE ABOUT 20 DEGREES COOLER THAN TODAY OVR THE SERN PLAINS. WITH SLIGHTLY COOLER READINGS ELSEWHERE.
SHORT WAVE THAT BROUGHT SOME SNOW TO THE HIGH COUNTRY LAST NIGHT HAS EXCITED THE REGION. THERE WILL CERTAINLY BE A COOLER AIR MASS IN PLACE OVER US TOMORROW. THE OVERALL FLOW PATTERN IS STILL ANTICYCLONIC THURSDAY WITH SOME WEAK QUASI LOW PRESSURE LINGERING OVER THE GREAT BASIN.
AT 12Z WEDNESDAY A 500MB TROUGH WAS LOCATED FROM WYOMING TO EASTERN UTAH. FURTHER EAST AN UPPER LEVEL RIDGE AXIS EXTENDED FROM EASTERN TEXAS TO MINNESOTA. OVER THE CENTRAL PLAINS AND NORTHERN PLAINS AN 850MB TROUGH STRETCHED FROM THE PANHANDLE OF TEXAS TO AN AREA OF LOW PRESSURE LOCATED IN NORTHEAST NORTH DAKOTA. AT 12Z WEDNESDAY A TROUGH OF LOW PRESSURE AT THE SURFACE WAS LOCATED FROM WESTERN OKLAHOMA TO CENTRAL NEBRASKA. A COLD FRONT APPEARS TO BE LOCATED ACROSS WESTERN NEBRASKA TO NORTHEAST COLORADO. THIS SYSTEM WILL PUSH A COLD FRONT THROUGH WESTERN KANSAS THIS MORNING. THE INITIAL SURGE OF COOLER AIR BEHIND THE FRONT WILL NOT BE OVERLY STRONG AND TEMPERATURES SHOULD STILL BE ABLE TO RISE INTO THE UPPER 60S TO MID 70S.
THE TIMING OF A COLD FRONT ACROSS THE AREA TOMORROW MORNING IS THE PRIMARY AVIATION WEATHER CONCERN. DRY AIR IN PLACE IS EXPECTED TO RESULT IN VFR CONDITIONS THROUGH TOMORROW AFTERNOON EVEN THOUGH A COLD FRONT IS EXPECTED TO MOVE ACROSS THE AREA. A COLD FRONT WILL MOVE SOUTH INTO THE TEXAS PANHANDLE THIS AFTERNOON.
Expect lows to once again fall to around or just below the freezing mark tonight.
STILL AREAS OF FOG AROUND AND SOME DRIZZLE/FREEZING DRIZZLE. HIGH PRESSURE BUILDS INTO THE FA THURSDAY NIGHT.