Aikyam-Lab/Synoptic-Bench huggingface dataset:
A COLD FRONT WILL MOVE THROUGH THE REGION TODAY AND BRING NLY WINDS 10-12 KTS. /ISSUED 242 AM CST THU JAN 29 2015/ COLD FRONT CURRENTLY ACROSS THE RED RIVER OF NORTH TEXAS AND INTO SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS. FRONT TO PUSH SOUTH ACROSS THE REGION TODAY ALLOWING FOR A WIND SHIFT TO THE NORTHWEST FOLLOWED BY COOLER TEMPERATURES. AS UPPER RIDGE BREAKS DOWN.
NEXT WEATHER MAKER IS MOVING INTO THE NORTHERN PLAINS IN THE FORM OF A LOW PRESSURE SYSTEM CENTERED OVER ILLINOIS WITH TRAILING COLD FRONT THROUGH THE MISSOURI VALLEY AND INTO THE DEEP SOUTH. FRONT PUSHES SOUTH OF THE AREA FOR THE REMAINDER OF THE SHORT TERM WITH HIGH BRIDGING NORTH OF THE AREA PROVIDING FOR A COLD NORTHERLY FLOW.
ADDED IN A LITTLE BIT OF PATCHY FREEZING DRIZZLE/OCCL FLURRIES MENTION TO THE EAST TO COVER ANYTHING THAT SPILLS OVER FROM FGF'S FORECAST AREA /UPSTREAM OBS AND RADAR INDICATING FLURRIES ARE WORKING SOUTHWARD TOWARD THE CWA/.
316 AM MST THU JAN 29 2015 High pressure, resulting in clear skies, and yet another morning with fog. High pressure will remain in place through Friday though increased high cloud cover can be expected and fog will remain an impact.
THE FIRST PART OF THE WEEKEND WILL BE DRY, AS COOL CANADIAN HIGH PRESSURE MOVES OVERHEAD.
Temperatures were still unseasonably mild early this morning across the Missouri Ozarks and extreme southeast Kansas with readings still from the low 50s to around 60. A cold front was in the process of pushing into the area with a northwest wind edging into the western CWA as of 2 am. A large low level cloud shield was quickly tracking southeast behind the front and area of low pressure and is expected to influence much of the CWA today. A closed low will develop with this system and ridging out ahead of it in the southern into central Plains on Friday.
FOG COVERAGE AND DENSITY HAS BEEN MUTED SOME, HOWEVER, BY THIS HIGH CLOUD COVER, AND SUSPECT THIS MUTING WILL BE APPARENT THROUGH THIS MORNING. NORMALLY, WITH HIGH CLOUDS LIMITING COOLING OVERNIGHT, WE WOULD EXPECT WARMER HIGH TEMPERATURES THIS AFTERNOON.
CLOUDS WILL INCREASE ACROSS THE FORECAST AREA THROUGH THE COURSE OF THE DAY TODAY AS A WEAK COLD FRONT SWINGS THROUGH THE REGION LATER THIS AFTERNOON. HIGHS TODAY WILL BE QUITE WARMER THAN THE PAST FEW DAYS IN ADVANCE OF THE FRONT. HIGH PRESSURE CENTERED NORTH OF THE REGION WILL BUILD INTO AND THROUGH THE FORECAST AREA FRIDAY INTO FRIDAY NIGHT. COOLER CONDITIONS WILL EXIST AS HIGHS FRIDAY AFTERNOON TOP OUT IN THE 50S.
A COLD FRONT MOVES THROUGH THE AREA THIS AFTERNOON. A COLD FRONT WILL PUSH THROUGH THE CWA DURING THE EARLY AFTERNOON AND HALT TEMPERATURES IN THE LOW TO MID 70S IN THE NORTHERN CWA AND UPPER 70S IN THE SOUTH. AN H5 TROUGH BEGINS ITS TREK ONSHORE FROM BAJA CALIFORNIA WHICH WILL RESULT IN BROAD DOWNSTREAM UPPER LEVEL SUPPORT SPANNING FROM EASTERN NEW MEXICO ACROSS MUCH OF TEXAS. THE TROUGH WILL PHASE PACIFIC MOISTURE WITH GULF RETURN FLOW BEGINNING LATE FRIDAY AND PRECIP DEVELOPMENT WILL BEGIN AND SPREAD INTO WEST TEXAS.
LIGHT WINDS WILL VEER AROUND THE WESTERN EDGE OF THE DIAL AS SOUTHEASTERN TEXAS FALLS JUST DOWNSTREAM OF AN APPROACHING COLD FRONT. THE BROAD UPPER TROUGH EVOLVING OVER THE BAJA REGION WILL SLOWLY ADVANCE EASTWARD THROUGH THE WEEKEND.
HIGH PRESSURE ALOFT ACROSS THE GREAT BASIN WILL SHIFT EAST AHEAD OF THE NEXT DEVELOPING STORM SYSTEM LATE IN THE WEEK.
A WEAK LOW PRESSURE SYSTEM WILL MOVE SOUTHEAST OF THE AREA TODAY AND FRIDAY.
650 AM EST THU JAN 29 2015 HIGH PRESSURE WILL BUILD EAST AND CREST ACROSS THE REGION TODAY.
531 AM CST THU JAN 29 2015 THE MID-LEVEL RIDGE AXIS CURRENTLY IN PLACE ACROSS THE FORECAST AREA WILL CONTINUE TO SHIFT EASTWARD THIS MORNING. THE COLD FRONT IS EXPECTED TO BE BISECTING THE REGION FROM SW-TO-NE AROUND 00Z. AND LIGHT SHOWERS MAY PERSIST INTO THE EARLY EVENING FOR LOCATIONS EAST OF I-65 AS BASE OF LONGWAVE TROUGH APPROACHES AND STRONGER MID-LEVEL ASCENT INTERACTS WITH LIFT ALONG THE COLD FRONT. DRY NORTHWEST FLOW ALOFT WILL PREVAIL ON FRIDAY/FRIDAY NIGHT IN THE WAKE OF THE DEPARTING LONGWAVE TROUGH. ADVECTION OF MODIFIED ARCTIC AIR INTO THE REGION WILL KEEP HIGH TEMPERATURES IN THE LOWER/MID 40S. AND -- ALTHOUGH NOT EXPLICITLY STATED IN THE GRIDS/FORECAST -- PATCHY FREEZING FOG WILL BE POSSIBLE IN LOCAL RIVER VALLEYS.
HIGH PRESSURE WILL MOVE OFF SLOWLY EAST WITH SOUTH WINDS DEVELOPING ACROSS THE PANHANDLE FROM 03Z ONWARD AND SPREADING SLOWLY EAST OVERNIGHT. THE RAP MODEL INDICATES NORTH WINDS AT JUST 10 TO 15 MPH BY 3 PM THIS AFTN AS PACIFIC HIGH PRESSURE BUILDS INTO WRN NEB. A WEAKENING UPPER LEVEL RIDGE WILL TRANSLATE EAST ACROSS THE CENTRAL PORTIONS OF THE UNITED STATES FRIDAY. MILD PACIFIC AIR WILL ACCOMPANY THE RIDGING.
THE MAINLAND THERMAL TROUGH WILL DECREASE LOCAL PRESSURE GRADIENTS. AND THEREFORE WILL BE WARMER AND MORE HUMID THAN THE PAST FEW DAYS. AS THE MAINLAND THERMAL TROUGH EXPANDS CROSS THE ISLANDS.
TOUGH TO PICK OUT WHERE EXACTLY THE COLD FRONT IS LOCATED AS THERE ISN'T MUCH BAROCLINICITY TO KEY ON. ON FRI AN UPPER LOW IS EXPECTED TO COME ON SHORE OVER SOUTHERN CA/BAJA. THE LOW CLOUDS SHOULD QUICKLY SCATTER OUT FROM WEST TO EAST IN THE AFTERNOON.
851 AM EST THU JAN 29 2015 CROSSING LOW PRESSURE WILL BRING A WINTRY MIX OF PRECIPITATION TO THE UPPER OHIO REGION TODAY AND SNOW EARLY ON FRIDAY. FURTHER N AND IN THE RIDGES. COLD ADVECTION BEGINS IN EARNEST ALOFT AS TWO SHORT WAVE TROUGHS ARE SET TO CROSS THE AREA THROUGH FRIDAY MORNING. HOWEVER THE DENDRITIC GROWTH LAYER LOOKS TO CRASH TOWARD THE SURFACE TONIGHT IN THE RIDGES. 3 TO 6 INCH TOTALS SEEM REASONABLE IN THE RIDGES BY FRIDAY MORNING.
1000 AM EST THU JAN 29 2015 HIGH PRESSURE EXTENDING ALONG THE EAST COAST WILL MOVE OFFSHORE THIS AFTERNOON. A COLD FRONT WILL MOVE ACROSS THE REGION TONIGHT.
AS A RESULT WILL LET THE FREEZING DRIZZLE ADVISORY EXPIRE AT 6 AM IN THOSE LOCATIONS. REPORTS TO THE WEST INDICATE SPOTTY FREEZING DRIZZLE ALONG HIGHWAY 94 NEAR TOMAH DID CAUSE SOME CARS TO GO OFF THE ROAD. EVEN THOUGH THE FREEZING DRIZZLE HAS NOT BEEN WIDESPREAD SO FAR. FREEZING DRIZZLE RETURNS WERE NOTED IN AREAS WHERE MID LEVEL RETURNS WERE LESS DEVELOPED. WITH SPOTTY OBSERVATIONS NORTHWEST OF THIS BAND NEAR DLH REPORTING FREEZING DRIZZLE AGAIN. WILL LET THE FREEZING DRIZZLE/RAIN HEADLINE RUN ITS COURSE THIS MORNING AND EVALUATE RADAR TRENDS AND SURFACE TEMPERATURES AT DAYBREAK FOR CHANGES. WARM START THIS AM WILL ALLOW TEMPS TO RISE INTO THE LOWER TO MID 30S OVER NORTHEAST WISCONSIN THEN TURN STEADY OR SLOWLY FALL.
FORECAST HIGHLIGHTS IN THE SHORT TERM PERIOD WILL BE LINGERING PATCHY FREEZING DRIZZLE EARLY THIS MORNING. EMBEDDED S/WV MID LEVEL TROUGH EXITING NORTH DAKOTA. THIS FEATURE CONTINUES TO CREATE PATCHY DRIZZLE/FREEZING DRIZZLE MAINLY ALONG TO SOUTH OF INTERSTATE 94. WITH DAYTIME HIGHS NOT MUCH WARMER THAN THEY ARE NOW.
510 AM CST THU JAN 29 2015 A COLD FRONT WAS MOVING THROUGH THE FORECAST AREA AS OF 08Z. SOME FOG AND LIGHT FREEZING DRIZZLE WAS OCCURRING AHEAD OF THE FRONT OVER NORTHWEST WISCONSIN. EXPECT THE FREEZING DRIZZLE TO COME TO AN END BEFORE 10Z AND THE FOG TO DISSIPATE. WITH THE DRY AIR FROM THE HIGH BUILDING INTO THE FORECAST AREA. SOME LOW LEVEL WARM AIR ADVECTION BEGINS AND DRIER AIR FROM THE HIGH BEGINS TO SHUT DOWN THE LAKE EFFECT SNOW SHOWERS. WILL SEE ABOUT ONE INCH OF ACCUMULATION OVER THE HIGHER TERRAIN OF IRON COUNTY.
At the surface, high pressure was building south through the central plains causing gusty northwest winds from a tight pressure gradient. However subsidence behind this wave should help to erode away the low stratus that has moved in, and think skies should clear out by the late afternoon. Lows tonight should be a bit colder as the ridge axis moves in creating light winds with clear skies. Because of this think dewpoints are likely to remain a couple degrees cooler than the air temp. therefore highs should recover back into the low to middle 40s for highs.
HIGH PRESSURE RIDGE THEN SETTLES OVER THE AREA TONIGHT BEFORE MOVING EAST ON FRIDAY.
645 AM MST THU JAN 29 2015 High pressure, resulting in clear skies, and yet another morning with fog. High pressure will remain in place through Friday though increased high cloud cover can be expected and fog will remain an impact.
THIS MOISTURE IS BEING CARRIED INTO THE SOUTHWEST CONUS BY THE SOUTH- SOUTHWEST FLOW AHEAD OF A LOW PRESSURE CIRCULATION OFF THE BAJA COAST. MOISTURE CONTINUES TO DEEPEN ON FRIDAY AS THE LOW STRENGTHENS OVER SOUTHERN CALIFORNIA. THE WARM NATURE OF THIS FLOW WILL KEEP SNOW LEVELS ON THE HIGH SIDE.
TODAY THROUGH FRIDAY NIGHT WATER VAPOR SHOWS TROF AXIS OVER THE NRN PLAINS WITH UPPER RIDGE BUILDING INTO THE NRN ROCKIES. HIGHS EXPECTED TO REACH INTO THE LOWER/MID 40S ON THE PLAINS. A BIT COOLER AT HIGHER ELEVATIONS. HIGHS A BIT WARMER THAN TODAY.
/ISSUED 333 AM CST THU JAN 29 2015/ THE COOL DOWN BEGINS TODAY WITH HIGHS 20 TO 25 DEGREES COOLER THAN YESTERDAY. THE COOLER TEMPS CONT FRIDAY INTO THE WEEKEND.
543 AM CST THU JAN 29 2015 FOR 12Z TAFS /ISSUED 531 AM CST THU JAN 29 2015/ THE MID-LEVEL RIDGE AXIS CURRENTLY IN PLACE ACROSS THE FORECAST AREA WILL CONTINUE TO SHIFT EASTWARD THIS MORNING. THE COLD FRONT IS EXPECTED TO BE BISECTING THE REGION FROM SW-TO-NE AROUND 00Z. AND LIGHT SHOWERS MAY PERSIST INTO THE EARLY EVENING FOR LOCATIONS EAST OF I-65 AS BASE OF LONGWAVE TROUGH APPROACHES AND STRONGER MID-LEVEL ASCENT INTERACTS WITH LIFT ALONG THE COLD FRONT. DRY NORTHWEST FLOW ALOFT WILL PREVAIL ON FRIDAY/FRIDAY NIGHT IN THE WAKE OF THE DEPARTING LONGWAVE TROUGH. ADVECTION OF MODIFIED ARCTIC AIR INTO THE REGION WILL KEEP HIGH TEMPERATURES IN THE LOWER/MID 40S. AND -- ALTHOUGH NOT EXPLICITLY STATED IN THE GRIDS/FORECAST -- PATCHY FREEZING FOG WILL BE POSSIBLE IN LOCAL RIVER VALLEYS.
BY MID AFTERNOON WINDS SHOULD GUST INTO THE LOW TO MID 20KT RANGE.
636 AM EST THU JAN 29 2015 HIGH PRESSURE EXTENDING FROM THE GREAT LAKES TO THE GULF COAST WILL BUILD EAST ACROSS THE AREA THIS MORNING AND MOVE OFFSHORE LATER TODAY. A COLD FRONT WILL MOVE ACROSS THE REGION TONIGHT.
With stacked weak high pressure aloft of the Gulf coast, skies will stay mostly clear.
LINE OF MAINLY LIGHT RAIN IS WORKING ITS WAY ACROSS MIDDLE TENNESSEE THIS MORNING, WITH THE ACTUAL COLD FRONT STILL SITUATED WEST OF THE MISSISSIPPI/OHIO RIVERS. THE FIRST PART OF THE WEEKEND WILL BE DRY, AS COOL CANADIAN HIGH PRESSURE MOVES OVERHEAD.
AS AN UPPER LEVEL TROUGH OVER BAJA CALIFORNIA CONTINUES TO MOVE EAST. AND THE CLOUDS RIDE UP AND OVER THE RIDGE INTO SOUTHEAST TEXAS. LATEST SURFACE ANALYSIS SHOWS A COLD FRONT ALIGNED IN A DFW TO SJT LINE. EXPECTING THE COLD FRONT TO ARRIVE INTO SOUTHEAST TEXAS BY 00Z FRIDAY (TONIGHT AT 6PM). MANY TEMPS ACROSS SOUTHEAST TEXAS ARE IN THE LOWER 60S. THERE LOOKS TO BE A CHANCE FOR PATCHY FOG AGAIN TONIGHT FOR THE SOUTHEAST TEXAS COASTAL COUNTIES AHEAD OF THE COLD FRONT AROUND MIDNIGHT. LIGHT WINDS WILL VEER AROUND THE WESTERN EDGE OF THE DIAL AS SOUTHEASTERN TEXAS FALLS JUST DOWNSTREAM OF AN APPROACHING COLD FRONT. THE BROAD UPPER TROUGH EVOLVING OVER THE BAJA REGION WILL SLOWLY ADVANCE EASTWARD THROUGH THE WEEKEND.
940 AM CST THU JAN 29 2015 STRONG COLD AIR ADVECTION THIS MORNING AND THEN SFC RIDGING BUILDING INTO THE REGION THIS AFTERNOON. ANTICIPATE FLURRIES WILL SLOWLY COME TO AN END FROM NORTH TO SOUTH THIS AFTERNOON AS THE STRONGER COLD AIR ADVECTION SHIFTS SOUTHWARD AND SFC RIDGING BUILDS.
340 AM PST THU JAN 29 2015 A WEAK LOW PRESSURE SYSTEM WILL MOVE SOUTHEAST OF THE AREA TODAY AND FRIDAY.
DRY CONDITIONS WILL CONTINUE TODAY THROUGH TONIGHT WITH UPPER LEVEL RIDGING ABOVE THE ROCKIES AND SOUTHERN PLAINS AND AN UPPER LEVEL TROUGH MOVING TOWARDS THE EASTERN UNITED STATES. HIGH PRESSURE AT THE SURFACE WILL BUILD INTO THE AREA TODAY THEN SHIFT EASTWARD INTO THE MISSISSIPPI VALLEY TONIGHT. HIGHS TODAY WILL GENERALLY BE AROUND 50 DEGREES WITH LOWS TONIGHT RANGING FROM THE MID 20S ACROSS CENTRAL KANSAS TO AROUND FREEZING ACROSS FAR SOUTHWESTERN KANSAS.
OTHERWISE THERE IS QUITE A BIT OF MOISTURE UP TO AROUND 600 MB OVER THE AREA WHICH HAS PRODUCED WIDESPREAD CLOUDS AND SOME VERY LIGHT SNOW OVER THE HIGHER MTNS. FOR THIS AFTN THRU TONIGHT AN UPPER LEVEL RIDGE WILL BUILD INTO THE AREA WITH THE FLOW ALOFT BECOMING MORE SWLY. MAIN FORECAST CONCERNS STILL SURROUND SNOW CHANCES AHEAD OF SLOW MOVING SOUTHWEST TROUGH. UPPER LEVEL RIDGE IS IN PLACE. BUT MODELS ARE STILL CONSISTENT BRINGING INCREASING CLOUD COVER THROUGHOUT THE DAY AS DEEP MOISTURE PLUME SHIFTS NORTHEAST THROUGH THE RIDGE. ENOUGH MOISTURE BY AFTERNOON FOR A FEW SNOW SHOWERS IN THE HIGH COUNTRY. THERE IS A WEAK COLD FRONT ADVERTISED TO MOVE THROUGH LATE IN THE DAY.
A LOW PRESSURE SYSTEM WILL MOVE IN FROM THE PACIFIC TONIGHT AND MOVE ACROSS SOUTHERN CALIFORNIA FRIDAY.
STRONGER NORTHWEST FLOW WILL EXIST JUST TO THE EAST OF THE AREA THE NEXT COUPLE OF DAYS WITH SOME WEAK RIDGING TRYING TO BUMP INTO THE AREA FROM THE WEST. CLIMBING JUST A FEW DEGREES WARMER ON FRIDAY.
A WEAK COLD FRONT WILL MOVE ACROSS THE FORECAST AREA ON FRIDAY. HIGH PRESSURE NORTH OF THE AREA WILL SINK SOUTH THROUGH THE DAY AND KEEP WINDS BELOW HEADLINES.
754 AM EST THU JAN 29 2015 HIGH PRESSURE EXTENDING ALONG THE EAST COAST WILL MOVE OFFSHORE LATER TODAY. A COLD FRONT WILL MOVE ACROSS THE REGION TONIGHT.
A COLD FRONT IS PROGGED TO CROSS THE AREA LATE AFTERNOON/EVENING HOURS. A COLD FRONT WILL MOVE ENTER THE FORECAST AREA LATER TODAY AND SHOULD MOVE INTO SOUTH CENTRAL LOUISIANA BY MIDNIGHT.
622 AM EST THU JAN 29 2015 CROSSING LOW PRESSURE WILL BRING A WINTRY MIX OF PRECIPITATION TO THE UPPER OHIO REGION TODAY AND SNOW EARLY ON FRIDAY. A FREEZING RAIN ADVISORY IS IN EFFECT OVER MOST OF MY OHIO ZONES. ALL THE MODELS ARE SHOWING A STRONG SURGE OF WARMER AIR ENVELOPING MY ENTIRE CWA TODAY. THIS SHOWS UP QUIET WELL IN THE THERMAL PATTERN AT 850MB AND IN THE LOW AND MID-LEVEL THICKNESS PATTERNS. WET BULBING WILL ALLOW FOR A PERIOD OF FREEZING RAIN. COLD ADVECTION BEGINS IN EARNEST ALOFT AS TWO SHORT WAVE TROUGHS ARE SET TO CROSS THE AREA THROUGH FRIDAY MORNING. HOWEVER THE DENDRITIC GROWTH LAYER LOOKS TO CRASH TOWARD THE SURFACE TONIGHT IN THE RIDGES. 3 TO 6 INCH TOTALS SEEM REASONABLE IN THE RIDGES BY FRIDAY MORNING.
524 AM CST THU JAN 29 2015 /12Z TAFS/ A cold front will move south across West Central Texas this morning, exiting the southern terminals by 17Z. /ISSUED 352 AM CST Thu Jan 29 2015/ (Today and Tonight) A cold front will move south across West Central Texas today. Expect northeast winds of 10 to 20 mph with gusts to 25 mph and cooler temperatures behind the front. Highs will range from the lower 60s across the Big Country to the upper 60s to around 70 along the I-10 corridor.
A COLD FRONT IS CURRENTLY JUST N OF LRD. COLD FRONT JUST NORTH OF REGION WILL QUICKLY PUSH SOUTH THIS MRNG AND BE THROUGH ALL TERMINALS AOB 15Z. AS OF WRITING A COLD FRONT WAS PUSHING THROUGH DEL RIO AND SAN ANTONIO AND PICKING UP PACE AS IT CONTINUES TO TREK SOUTH. HIGH PRESSURE AXIS SLOWLY DRIFTS EASTWARD DURING THE DAY FRIDAY WITH COOL CONDITIONS PERSISTING.
AS OF 3 AM THE COLD FRONT IS ALONG A DEL RIO TO KERRVILLE TO SAN MARCOS TO GIDDINGS LINE. SKIES BEGIN TO CLEAR TONIGHT ALLOWING TEMPERATURES TO DROP INTO THE LOW TO MID 30S. A FEW LOW LYING AREAS ACROSS THE HILL COUNTRY COULD DROP TO THE FREEZING MARK.
WEED REPORTED A GUST TO 55 MPH OVERNIGHT AND THE HIGHER TERRAIN WAS FREQUENTLY SEEING GUSTS IN EXCESS OF 60 MPH.
EXITING LOW LEVEL THERMAL TROUGH REPRESENTING 850 MB TEMPERATURES OF -21 TO -23C. DRY MID LEVEL NORTHWEST FLOW WORKING ACROSS LOW LEVEL RIDGING SUSTAINING A STABLE PROFILE AND ENSURING PLENTY OF SUNSHINE. HIGHS WILL LIKELY STRUGGLE TO CLIMB MUCH ABOVE THE LOWER TEENS. LOWS ARRIVING IN THE LOWER AND MIDDLE SINGLE DIGITS. THE WESTERN CONUS RIDGE WILL KEEP NORTHWESTERLY FLOW IN PLACE OVER THE GREAT LAKES THROUGHOUT THE WEEKEND. THE WAVELENGTH OF THE RIDGE IS FORECASTED TO BROADEN ENOUGH TO PUSH THE JET STREAM AND MAIN BELT OF WESTERLIES INTO NORTHERN ONTARIO. THE LOWER LEVEL COLUMN WILL BE VOID OF MOISTURE.
624 AM EST THU FEB 5 2015 ARCTIC HIGH PRESSURE WILL BUILD IN TODAY AND MOVE OFF TO THE EAST ON FRIDAY.
554 AM CST THU FEB 5 2015 FOR 12Z TAFS /ISSUED 343 AM CST THU FEB 5 2015/ CURRENT WATER VAPOR IMAGERY SHOWS A BROAD UPPER TROUGH OVER MUCH OF THE EASTERN CONUS. WITH UPPER LEVEL RIDGING OVER THE WESTERN CONUS. THANKS TO A SURFACE COLD FRONT. TEMPERATURES WERE WARMING INTO THE LOW TO MID 40S AS THE BOUNDARY LAYER WINDS STRENGTHEN. WITH NO ACCUMULATIONS EXPECTED DUE TO THE LIGHT INTENSITY AND WARMER TEMPERATURES. AS HIGH PRESSURE BUILDS IN FROM THE NORTHWEST. AS THE HIGH MOVES TO THE SOUTHEAST ON FRIDAY. WITH UPPER LEVEL RIDGING BUILDING INTO THE REGION. TEMPERATURES WILL MODERATE FAIRLY QUICKLY UNDER THIS HIGH PRESSURE.
T-TD SPREAD AT MEEKER IS ONLY 3 DEGREES AT THIS POINT SO ADDED THEM INTO PATCHY FOG THROUGH THE LATE MORNING AS WELL ANTICIPATING MORE BREAKS IN THE HIGH CLOUDS. WENT AHEAD AND ADDED FOG FOR TONIGHT TO THESE AREAS AND VERNAL CONSIDERING FOG DEVELOPED SO RAPIDLY THIS MORNING AND HIGH PRESSURE BUILDING IN TODAY WILL ONLY TRAP MOISTURE AT THE SFC FOR TONIGHT. THIS HIGH CLOUD COVER IS KEEPING TEMPERATURES MILD THIS MORNING AND HINDERING FOG FROM DEVELOPING. CROSS SECTIONS SHOW DRIER AIR MOVING INTO THE FORECAST AREA BY THIS EVENING AS HIGH PRESSURE DEVELOPS. SO THE HIGH CIRRUS IS LIKELY TO STICK AROUND FOR THE MORNING HOURS TODAY BEFORE MOVING OUT OF THE REGION. THE HIGHER LOCATIONS ACROSS THE FORECAST AREA MAY SEE SOME 25+ MPH WIND GUSTS TODAY AS THE PRESSURE GRADIENT REMAINS MODERATELY TIGHT AT 700 MB.
TODAY THROUGH FRIDAY NIGHT UPPER LEVEL ANALYSIS HAS BROAD TROF OVER THE EASTERN CONUS WITH RIDGE BUILDING ACROSS THE WEST. FAST NORTHWEST UPPER FLOW IS PRESENT ACROSS THE NORTHERN PLAINS WITH HIGH THIN CIRRUS SPILLING OVER THE RIDGE AT THE MOMENT. MODIFIED ARCTIC HIGH HAS SHIFTED INTO THE MID MISSISSIPPI VALLEY WITH WEAK TROF DEVELOPING IN THE LEE OF THE NORTHERN ROCKIES. WARMER AIR IS ADVECTING INTO THE NORTHERN PLAINS ON LIGHT WESTERLY BOUNDARY LAYER FLOW. AND INTO THE 20S ACROSS THE HIGHER ELEVATIONS OF THE BLACK HILLS AND NORTHEAST WYOMING. SKIES WILL BE VARIABLY CLOUDY AS THE WARMER AIR CONTINUES TO BUILD IN. UPPER RIDGE WILL BUILD INTO THE PLAINS AS SURFACE LEE TROF STRENGTHENS.
TEMPERATURES HAVE BEEN DROPPING RAPIDLY BEHIND THE FRONT AS THE DENSE ARCTIC AIRMASS SINKS SOUTH WITH TEMPERATURES ALREADY IN THE LOW TO MID 20S IN NORTHEAST AR/MO BOOTHEEL/NORTH TN. WARM AIR ADVECTION BEGINS IN EARNEST AS A LOBE OF THIS WARMER AIRMASS OVERSPREADS THE MID-SOUTH THROUGH THE WEEKEND.
221 AM PST THU FEB 5 2015 A RIDGE OF HIGH PRESSURE WILL BRING DRY WEATHER AND ABOVE NORMAL AFTERNOON TEMPERATURES TO THE CENTRAL CALIFORNIA INTERIOR THROUGH FRIDAY MORNING.
THIS HIGH CLOUD COVER IS KEEPING TEMPERATURES MILD THIS MORNING AND HINDERING FOG FROM DEVELOPING. CROSS SECTIONS SHOW DRIER AIR MOVING INTO THE FORECAST AREA BY THIS EVENING AS HIGH PRESSURE DEVELOPS. SO THE HIGH CIRRUS IS LIKELY TO STICK AROUND FOR THE MORNING HOURS TODAY BEFORE MOVING OUT OF THE REGION. THE HIGHER LOCATIONS ACROSS THE FORECAST AREA MAY SEE SOME 25+ MPH WIND GUSTS TODAY AS THE PRESSURE GRADIENT REMAINS MODERATELY TIGHT AT 700 MB.
/ISSUED 347 AM CST Thu Feb 5 2015/ (Today and Tonight) A strong cold front cleared the area overnight, leaving much colder temperatures and cloudy skies in its wake. Being behind the strong cold front, and with clouds in place most of the day, temperatures will be much cooler than yesterday with highs in the mid 40s into the lower 50s. Tonight, with clear skies and light winds, temperatures will drop into the lower 30s most areas, and possibly into the upper 20s in low lying areas and valley locations along the I-10 corridor.
MODELS ARE SHOWING A MUCH COLDER AND DRIER AIR MASS FILLING IN BEHIND THE TROUGH. BUT MODELS ARE HITTING THE THREAT FOR SNOW SHOWERS HARDER ACROSS THE NORTH AND RIDGES. THE RIDGES WILL STAND THE BEST CHANCE FOR SNOW SHOWERS THROUGH THE MORNING AND INTO THE AFTERNOON AS AN OPTIMAL SETUP FOR UPSLOPE ACTIVITY ENSUES. AS THE MID- LEVEL RIDGE MOVES EASTWARD. WINDS WILL CREATE DANGEROUS WIND CHILLS ACROSS THE NORTH AND RIDGES TONIGHT.
AN ARCTIC HIGH PRESSURE SYSTEM OVER THE EASTERN PLAINS WILL MOVE EAST ACROSS OUR REGION LATE TODAY.
ARCTIC HIGH PRESSURE IS QUICKLY BUILDING ACROSS THE REGION EARLY THIS MORNING. THE HIGH WILL SLIP SOUTHEAST OF THE AREA BY 12Z FRIDAY ALLOWING FOR SOUTHERLY WINDS TO DEVELOP.
AN PRONOUNCED UPPER RIDGE AXIS EXTENDED FROM THE DESERT SOUTHWEST TO BRITISH COLUMBIA. AHEAD OF A LARGE EASTERN PACIFIC TROUGH. A LARGE CANADIAN HIGH PRESSURE RIDGE DOMINATED THE EASTERN GREAT PLAINS AND MS VALLEY. LATEST DETERMINISTIC MODEL GUIDANCE IS CONSISTENT DEPICTING A PROGRESSIVE LARGE SCALE FLOW ACROSS THE LOWER 48. THE RIDGE TO THE WEST WILL ADVANCE EASTWARD ACROSS THE INTERMOUNTAIN WEST AND ROCKY MOUNTAINS DURING THE FORECAST PERIOD. THE HIGH WIND POTENTIAL IS MARGINAL AT THIS TIME. INCREASING DOWNSLOPE WINDS WILL RESULT IN WARMER TEMPERATURES WITH AFTERNOON TEMPERATURES RISING INTO THE 40S AND LOWER 50S. FRIDAY WILL BE 10-15 DEGREES WARMER THAN TODAY WITH NEAR RECORD HIGHS IN THE LOWER TO MID 60S FOR THE PLAINS.
AN UPPER LEVEL RIDGE OVER THE FOUR CORNERS REGION WILL SLOWLY SLIDE EASTWARD INTO THE ROCKIES TODAY INTO TONIGHT WITH AN UPPER LEVEL LONG WAVE TROUGH CONTINUING ABOVE EASTERN CANADA. LEE TROUGHING WILL DEVELOP THIS MORNING SHIFTING WINDS TO MORE OF A SOUTHWESTERLY DIRECTION TODAY THEN MORE OF A WESTERLY DIRECTION BY SUNRISE TOMORROW.
AS SHOWERS AND POSSIBLE THUNDERSTORMS FLUSH SOUTHEASTWARD AHEAD OF A STRONG COLD FRONT. THEN SWITCH TO NORTH AND BECOME STRONG AND GUSTY IN WAKE OF THE COLD FRONT THIS EVENING.
245 AM PST THU FEB 5 2015 FAIR AND WARM WEATHER WILL CONTINUE THROUGH FRIDAY WITH HIGH PRESSURE ALOFT OVER THE SOUTHWEST.
WARMER TEMPERATURES ARE LIKELY BY FRIDAY AND INTO THE UPCOMING WEEKEND. MUCH WARMER TEMPS INTO THE UPPER 20S TO UPPER 30S ARE FORECAST AS WAA IN SW MID-LEVEL FLOW PUSHES 1000-500 MB THICKNESS UP TO 552 DAM AND 850 MB TEMPS TO NEAR +8 C.
MID TO UPPER LEVEL TROUGH WILL DEEPEN AND PUSH EWD THROUGH TONIGHT WITH DRIER AIR FILTERING IN ON W TO NW FLOW ALOFT. MUCH COOLER TONIGHT WITH LOWS IN THE LOWER TO MID 30S OVER A LARGE PART OF THE FORECAST REGION. WIND CHILLS WILL LIKELY DROP INTO THE LOWER TO MID 20S FRIDAY MORNING.
FREEZING DRIZZLE AT KDFW THIS MORNING. DRIZZLE/MIST IS OCCURRING AT KDAL AND KGKY WITH FREEZING DRIZZLE BEING REPORTED AT KDFW. COLD TODAY FOLLOWED BY A SUNNY AND MUCH WARMER WEEKEND. SURFACE OBSERVATIONS ON THE NORTH SIDE OF THE DFW METROPLEX SUGGEST THAT LOW LEVEL DRYING IS BRINGING AN END TO THE DRIZZLE JUST BEFORE TEMPERATURES GET DOWN TO FREEZING. A BRIEF PERIOD OF FREEZING DRIZZLE WILL BE POSSIBLE IN NORTHERN AREAS. THE RELATIVELY WARM GROUND TEMPERATURES AND SHORT DURATION OF FREEZING DRIZZLE SUGGEST THAT NO SIGNIFICANT IMPACTS WILL OCCUR THIS MORNING.
NO SERIOUS THREAT FOR ANY SIGNIFICANT COLD AIR INTRUSIONS EXPECTED INTO THE LOWER 48. GOING FCST SEEMS TO BE ON TRACK WITH FRIDAY HIGHS IN THE LOWER/MID 40S.
HIGH PRESSURE OVER THE PLAINS IS PUSHING SOUTH AND A COLD FRONT WILL MOVE THROUGH THE AREA THIS MORNING. LIGHT NORTH WINDS WILL CONTINUE TONIGHT UNDER CLOUDY SKIES WITH LOW TEMPERATURES FROM 45 TO 50 AS HIGH PRESSURE SPREADS OVER THE AREA. TEMPERATURES WILL WARM INTO THE MID 60S FRIDAY WITH HIGH PRESSURE OVERHEAD WHILE WINDS BEGIN TO VEER AND INCREASE FROM THE SOUTHEAST.
946 AM EST THU FEB 5 2015 LOW PRESSURE TRACKS AWAY FROM THE MID ATLANTIC COAST THIS AFTERNOON AS AN ARCTIC COLD FRONT PUSHES OFF THE COAST.
STRONG CAA WITH N TO NE SFC WINDS MEASURING BETWEEN 15-20 MPH WITH GUSTS UP TO 25 MPH WILL CONTINUE THIS MORNING BEHIND AN ARCTIC COLD FRONT AS A 1037 MB HIGH OVER N MO SLOWLY MOVES EAST. ARCTIC COLD FRONT HAS CLEARED BOTH TERMINALS THIS MORNING WITH NNE FLOW OF 15G22 KTS EXPECTED TO CONTINUE THRU 05/15Z BEFORE DIMINISHING TO 10G18 KTS.