Aikyam-Lab/Synoptic-Bench huggingface dataset:
402 PM EST TUE NOV 17 2015 AVIATION SECTION UPDATED LOW PRESSURE AND AN ASSOCIATED COLD FRONT WILL APPROACH INDIANA FROM THE WEST TONIGHT AND CROSS THE STATE WEDNESDAY. AFTER THAT THE HOOSIER STATE IS GOING TO BE IN A PATTERN OF HIGH PRESSURE SYSTEMS AND COLD FRONTS TAKING TURNS AFFECTING OUR WEATHER.
WINDS WILL INCREASE AT THE RIDGETOP LEVEL FIRST THIS EVENING.
236 PM EST TUE NOV 17 2015 HIGH PRESSURE WILL PROVIDE PLEASANT LATE FALL WEATHER CONDITIONS TO THE NORTH COUNTRY TODAY AND WEDNESDAY WITH MOSTLY CLEAR SKIES.
THE COLD FRONT HAS JUST ABOUT CLEARED EAST AND SOUTH OF THE CWA. TEMPERATURES HAVE PLUNGED BEHIND THE FRONT FROM THE MID 70S INTO THE LOW TO MID 50S ACROSS MOST AREAS. AND LOCATIONS ACROSS THE FAR EASTERN CWA MAY STRUGGLE BACK INTO THE LOW TO MID 60S.
WILL BE IN AN ACTIVE WEATHER PATTERN FOR THE SHORT TERM AS A STRONG LOW PRESSURE SYSTEM MOVES THROUGH THE AREA.
WILL LIKELY UPGRADE MOST OF THE HIGH WIND WATCH ACROSS THE CENTRAL TO A HIGH WIND WARNINGWITH THE NEXT FORECAST UPDATE. INCREASED THE MENTION OF LIGHT SNOW THIS MORNING ACROSS THE JAMES RIVER VALLEY GIVEN RADAR SIGNATURES AND SURFACE TEMPERATURES IN THE LOW TO MID 30S ADVECTING INTO THE AREA. THUS DECREASING CLOUDS WEST TO EAST TODAY WITH HIGHS IN THE LOWER 40S. UPGRADE THE HIGH WIND WATCH TO A WARNING WEST.
1151 AM CST TUE NOV 17 2015 VFR CONDITIONS WILL PREVAIL AT ALL TAF SITES FOR AT LEAST THE NEXT 24-30 HOURS BEHIND THE COLD FRONT THAT MOVED THROUGH THIS MORNING. THE COLD FRONT HAS JUST ABOUT CLEARED EAST AND SOUTH OF THE CWA. TEMPERATURES HAVE PLUNGED BEHIND THE FRONT FROM THE MID 70S INTO THE LOW TO MID 50S ACROSS MOST AREAS. AND LOCATIONS ACROSS THE FAR EASTERN CWA MAY STRUGGLE BACK INTO THE LOW TO MID 60S.
EXPECT GUSTY NORTHERLY WINDS AND CHILLY TEMPERATURES BEHIND A DEPARTING LOW PRESSURE SYSTEM. THIS MORNINGS SATELLITE IMAGERY REVEALS THE LOW PRESSURE SYSTEM THAT BROUGHT RAIN AND HIGH ELEVATION SNOW TO NORTHERN ARIZONA IS NOW WELL EAST OF THE STATE. DAYTIME TEMPERATURES ARE FORECAST TO CLIMB INTO THE LOW TO MID 40'S OVER HIGHER TERRAIN AND THE 50'S IN THE LOWER DESERTS.
WARMER TEMPERATURES WEDNESDAY INTO THE UPCOMING WEEKEND. UPPER LOW NOW ACROSS THE OKLAHOMA PANHANDLE AND PUSHING EASTWARD WITH DRY NORTH-NORTHWESTERLY FLOW ALOFT ACROSS SOUTHEAST ARIZONA. AS THE TROUGH MOVES EASTWARD.
333 PM EST TUE NOV 17 2015 TEMPERATURES WILL REMAIN MILD INTO WEDNESDAY BEFORE A COLD FRONT BRINGS RAIN AND A RETURN TO SEASONABLE TEMPERATURES. MODEL SOUNDINGS SUGGEST THAT THE BOUNDARY LAYER WEST OF THE RIDGES MAY REMAIN RELATIVELY UNSTABLE. STABILITY PROFILES DO SHOW A BIT OF AN INVERSION JUST ABOVE THE RIDGETOPS. HOWEVER MOMENTUM AT THE RIDGETOPS COMBINED WITH DIRECTIONAL SHEAR THAT FAILS TO BE ORTHOGONAL TO THE RIDGELINE MAY WELL MAKE STRONGER WIND GUSTS IMMEDIATELY TO THE WEST OF THE RIDGES TOUGH TO MUSTER. WITH 30-35 KTS AT THE RIDGETOPS. THIS MORE STABLE AIR WILL LIKELY INFILTRATE MORE OF THE EASTERLY FACING RIDGES THROUGH THE NIGHT. UNSEASONABLY WARM LOWS IN THE LOWER 50S WILL BE COMMON. FRIES PRECIPITATION POTENTIAL WILL REMAIN ALONG THE EASTERN RIDGES WEDNESDAY THANKS TO ATLANTIC MOISTURE FEED.
PROGRESSION OF COLD FRONT AND ASSOCIATED WIND FIELD MAIN ISSUES FOR TODAY.
/ISSUED 920 AM EST SUN FEB 28 2016/ HIGH PRESSURE WILL SHIFT OFFSHORE TODAY. /ISSUED / LATEST REGIONAL SURFACE ANALYSIS SHOWS HIGH PRESSURE HAS SETTLED OVER SOUTH GEORGIA AND NORTH FLORIDA TONIGHT WITH EXCELLENT RADIATIONAL COOLING CONDITIONS OVER THE SOUTHERN TWO THIRDS OF THE STATE. ANOTHER TREMENDOUS DAY IN STORE AS HIGH PRESSURE SLIDES FURTHER TO THE SOUTH AND A BROADER SOUTHWEST FLOW REGIME RESULTS IN ADDITIONAL MODERATION OF THE AIRMASS. MOISTURE WILL BE A LIMITING FACTOR BUT SINCE WHAT IS THERE WILL BE AT THE LOW LEVELS. WILL SHADE ON THE HIGH SIDE OF GUIDANCE FOR POPS.
Mostly sunny skies and compressional warming ahead of the next boundary have allowed for highs to be raised a few degrees into the lower 70s, especially given the recent trends of models being too cool.
A STRONG COLD FRONT FRONT ACROSS SOUTHERN SASKATCHEWAN WILL CONTINUE TO PROPAGATE SOUTHEAST THIS AFTERNOON THROUGH TONIGHT.
HIGH PRESSURE WILL SHIFT EASTWARD TONIGHT AND REMAIN ACROSS THE WESTERN ATLANTIC FOR MONDAY. WITH THE HIGH NO LONGER OVERHEAD. A LIGHT EAST TO SOUTHEAST FLOW WILL REMAIN ACROSS THE AREA WITH AN AFTERNOON SEA BREEZE TURNING WINDS ONSHORE ALONG THE COAST AND THE AIR MASS OVER US WILL MODIFY WITH HIGH TEMPERATURES A FEW DEGREES WARMER THAN TODAY.
A COLD FRONT DELINEATED WITH CLOUDS EXTENDING FROM WEST OF LAKE MICHIGAN TO THE RED RIVER OF TX/OK AND SE NM WAS APPROACHING THE REGION FROM THE EASTERN PLAINS. THIS WAS GOING UNDER A STORM SYSTEM ACROSS THE ALEUTIANS TO A RIDGE ACROSS THE WESTERN CONUS. ANOTHER WEAK TROUGH EAST OF THE RIDGE WAS HELPING SEND THE ABOVE NOTED FRONT TO THE EAST. FOR THE SHORTER TERM (TONIGHT INTO MONDAY) THE COLD FRONT SHOULD CONTINUE ARRIVING FROM THE WEST. WARMER AIR AND A SOUTHERLY FLOW RECOMMENCES SHOULD BRING MORE UNSEASONABLY WARM TEMPS FOR MON/TUE.
Its attendant cold front will move across the area this afternoon. In addition, both the latest runs of the HRRR and NSSL WRF are showing that there will be isolated light showers developing early to mid afternoon over the southeast half of the CWA ahead of the cold front.
306 PM EST SUN FEB 28 2016 A WEAK COLD FRONT WILL PUSH THROUGH THE AREA MONDAY AFTERNOON AND EVENING TRIGGERING A FEW LIGHT RAIN AND SNOW SHOWERS. FOLLOWED BY COOLER AIR.
338 PM CST SUN FEB 28 2016 (Tonight and Monday) A weak cold front this afternoon is located near a San Angelo to Brownwood line.
As deep layer ridging shifts eastward, low level flow will become more southerly and begin to return low level moisture to the region.
323 PM CST SUN FEB 28 2016 A WARM FRONT IS SLOWLY PUSHING EASTWARD ACROSS THE REGION THIS AFTERNOON WITH TEMPERATURES CLIMBING INTO THE UPPER 40S AND MID 50S BEHIND IT. THE ARCTIC COLD FRONT WILL BRING STRONG NORTHERLY WINDS. ESPECIALLY IN THE NORTHEAST PORTION OF THE CWA WHERE THE HIGHEST PRESSURE RISES WILL OCCUR. AN AREA OF LOW PRESSURE WILL TRACK ALONG THE BAROCLINIC ZONE MONDAY AFTERNOON THROUGH MONDAY NIGHT.
THIS EVENING THROUGH MONDAY NIGHT WEAK UPPER RIDGE IS MOVING OVER THE ROCKIES. WITH COOLER TEMPS THROUGHOUT THE CWA.
A WARM FRONT IS CURRENTLY LOCATED JUST EAST OF THE MISSOURI RIVER VALLEY. THIS WARM FRONT SHOULD PUSH EAST SOME THIS AFTERNOON. A WEAK UPPER TROF OVERHEAD SUPPORTS A FEW LIGHT SHOWERS. THIS COLD ADVECTION WILL ALSO SQUEEZE OUT AVAILABLE MOISTURE IN THE LOW LEVELS.
THIS WILL PUSH A WEAK COLD FRONT INTO THE MID SOUTH.
TONIGHT THROUGH MONDAY AS A HIGH PRESSURE RIDGE OVER EASTERN IDAHO MOVES EAST THROUGH THE NIGHT. THE LOWER ELEVATIONS MAY SEE SCATTERED TO ISOLATED RAIN SHOWERS WITH GUSTY WINDS THROUGH THE AFTERNOON. MONDAY NIGHT THROUGH SUNDAY HIGH PRESSURE WORKS TO RETURN TO THE AREA MONDAY NIGHT.
AND THE NEW FORECAST SPREADS THE LOW POPS INTO NORTHWEST SECTIONS.
309 PM CST SUN FEB 28 2016 THE SHORT TERM FORECAST ISSUE WILL BE ON A STRONG COLD FRONT THAT WILL MOVE THROUGH THE NORTHLAND TONIGHT INTO EARLY MONDAY MORNING BRINGING WITH IT A BURST OF SNOW AND STRONG WINDS. THERE MAY BE SOME LOCALIZED HIGHER SNOW TOTALS AS SEVERAL OF THE HIGH RES MODELS SHOW SOME BANDED STRUCTURE TO THE SNOW. BUT WE DO NOT EXPECT A PROLONGED PERIOD OF LAKE EFFECT SNOW AS STRONG SUBSIDENCE WILL OCCUR AS DRY HIGH PRESSURE QUICKLY BUILDS IN BEHIND THE FRONT. MAINLY ALONG THE NORTH SHORE WHERE QUITE A FEW OF THE HIGH RES MODELS DEVELOP SNOW OR FREEZING DRIZZLE IN AN AREA OF WEAK LOW LEVEL CONVERGENCE. SURFACE RIDGING WILL BUILD INTO THE BORDERLAND MONDAY NIGHT.
352 PM CST SUN FEB 28 2016 RIDGE OF HIGH PRESSURE WILL QUICKLY MOVE INTO IOWA THIS EVENING BRINGING DRIER AIR AND LIGHTER WINDS TO THE STATE. THE RIDGE WILL MOVE SWIFTLY AS WELL WITH A COLD FRONT ENTERING THE NORTHERN PLAINS.
WITH HIGH PRESSURE QUICKLY SETTLING INTO THE REGION MONDAY MORNING WINDS WILL DIMINISH AND CLEAR SKIES FOR ALL BUT THE SOUTHERN AND WESTERN FRINGES.
It will continue to move slowly through the rest of the afternoon and into the evening, with the movement of the low cloud deck in advance of the boundary mirroring the front's progress. Widespread thunderstorms, with some severe hail and wind potential, are still expected as the low level jet increases toward midnight tomorrow night and as a stronger cold front pushes through the region.
MOISTURE WILL CONTINUE TO ADVECT INTO THE REGION UNDERNEATH THE LOW LEVEL INVERSION.
A FLAT RIDGE WILL MOVE IN FOR TODAY AND PROVIDE A MOSTLY DRY DAY. ANOTHER SYSTEM WILL QUICKLY FOLLOW BEHIND THE RIDGE AND INVADE THE WEST FOR TONIGHT AND MONDAY.
COLD FRONT WHIPS THROUGH DURING THE LATE NIGHT/EARLY MORNING MONDAY.
CONSIDERABLE CLOUDINESS WILL BEGIN TO BREAK UP THIS EVENING AS A RIDGE BRIEFLY BUILDS ACROSS MN AND WI. WHICH RESULTS IN A SLIGHTLY COOLER HIGH TEMPERATURE FORECAST FOR MONDAY. SO IT ISN/T NECESSARILY IMPORTANT TO FOCUS ON THE HIGH TEMPERATURE.
DON/T THINK THIS WILL AFFECT THE LOW LEVEL MOISTURE ADVECTION MUCH THIS AFTERNOON. AND DESPITE THE GUSTY SW WINDS EVIDENCED BY THE TIGHT PRESSURE GRADIENT IN PLACE ACROSS THE SRN PLAINS AHEAD OF A COLD FRONT TRAVERSING CNTRL OK AND NW TX.
154 PM EST SUN FEB 28 2016 COLD FRONT WHIPS THROUGH LATE NIGHT/EARLY MORNING MONDAY.
First strong cold front of a series this week comes in tonight bringing a swath of precipitation, falling temps and gusty winds.
MVFR ceilings are preceding the advancing cold front.
MAIN STORY IN THE NEAR TERM LOOKS TO BE ELEVATED SRLY WINDS WITH A GOOD GRADIENT SETTING UP BETWEEN DEPARTING HIGH AND LOW PRESSURE MOVING OUT OF THE SRN PLAINS. A RIDGE AT THE SURFACE IS CENTERED OVER THE FL PANHANDLE THIS MORNING WHILE LOW PRESSURE IS MOVING ACROSS THE NORTHERN PLAINS. AS THE PLAINS LOW MOVES ACROSS THE GREAT LAKES THROUGH TONIGHT AN ASSOCIATED COLD FRONT WILL MOVE INTO AND STALL OVER NORTH TX AND AROUND THE LA/AR BORDER. ALSO DURING MONDAY A SHORT WAVE WILL MOVE ACROSS THE ROCKIES WHICH WILL ALLOW ANOTHER AREA OF LOW PRESSURE TO DEVELOP OVER THE CENTRAL PLAINS.
HIGHS WILL GENERALLY BE COOLER THAN YESTERDAY BUT THEY WILL STILL BE A GOOD 10 TO 15 DEGREES ABOVE AVERAGE AT MOST LOCATIONS. WEST TO NORTHWEST WINDS ACROSS THE HIGHER ELEVATIONS WILL BE GUSTY THROUGH THE DAY. THEN GUSTY NORTHERLY WINDS WILL OCCUR ACROSS THE E PLAINS AS A SFC COLD FRONT DROPS SOUTH ACROSS THE PALMER DVD MON EVE. SO GUSTY WINDS AND LIMITED PCPN LOOKS TO BE RESTRICTED TO THE HIGHER TERRAIN. MAINTAINED ISOLATED POPS OVER THE HIGHER ELEVATIONS.
A WEAK LOW PRESSURE SYSTEM WILL BRUSH NORTHEAST ARIZONA MONDAY WITH PARTLY CLOUDY SKIES AND POSSIBLY A LIGHT SHOWER.
Gusty winds will continue this afternoon into the evening ahead of the cold front approaching from the northwest. Will likely keep the Special Weather Statement out for now as the higher wind gusts are mainly to the west of the forecast area. High pressure will be moving across the region Monday and east of the area Monday night as a low pressure system begins to approach from the west. Monday will be partly cloudy to mostly sunny, but cooler than today with highs in the upper 50s to lower 60s.
A cold front is poised to sweep through the PAH forecast area from mid evening to about midnight, with little in the way of measurable pcpn to show for it due to limited available moisture. This slight chance of showers (mainly for the eastern half) will be gone by sunrise as dry high pressure air surges into the region. Starting late Monday night in southeastern MO and the Purchase area of KY, the weather picture will change for the PAH forecast area as forcing from a vigorous low pressure system provides ample lift of deep moisture.
LOWS TONIGHT WILL RANGE FROM THE LOW-MID 30S NORTHWEST TO LOW-MID 40S EAST.
UPPER AIR ANALYSIS AND IR SATELLITE IMAGERY SHOWED A RIDGE OVER SOUTHEAST CONUS TO NORTHEAST. A TROUGH AXIS FROM MINNESOTA TO TEXAS PANHANDLE AND ANOTHER SHARP TROUGH APPROACHING THE NORTHWEST PACIFIC. 18 UPPER LEVEL TROUGH OVER THE UPPER PLAINS/MIDWEST WILL TRACK EAST TO THE GREAT LAKES TO TENNESSEE VALLEY EARLY MONDAY.
226 PM MST SUN FEB 28 2016 LATEST SATELLITE AND UPPER AIR ANALYSIS DEPICT A SHORT WAVE TROUGH OVER THE MISSOURI RIVER VALLEY AND A SHORT WAVE RIDGE MOVING OVER THE GREAT BASIN. FURTHER WEST A TROUGH WAS OVER THE GULF OF ALASKA. A LARGE EXPANSE OF CLOUDS WAS ON THE WEST SIDE OF THE RIDGE AXIS AHEAD OF THE TROUGH. AT THE SURFACE THE COLD FRONT FROM LAST NIGHT STRETCHED FROM SOUTHEAST KANSAS TO THE TEXAS/OKLAHOMA PANHANDLES. SO WENT A FEW DEGREES COOLER FOR LOWS THAN MOST MODEL DATA. NORTHWEST WINDS WILL BE BREEZY BEHIND THE TROUGH DURING THE EARLY AFTERNOON WEST OF HIGHWAY 27.
223 PM EST SUN FEB 28 2016 HIGH PRESSURE WILL SHIFT OFFSHORE THIS EVENING.
A weak cold front will move south across much of the area this afternoon, with winds becoming north to northwest at around 10 knots. A cold front will move through KABI early afternoon, and through KSJT and KBBD late afternoon. /issued 325 AM CST SUN FEB 28 2016/ (Today and Tonight) A weak cold front will move into the Big Country midday, reaching the I-20 corridor 1 to 2 PM CST in the afternoon, and a San Angelo to Brownwood line around 5 PM CST.
WEAK, TRANSIENT HIGH PRESSURE AT ALL LEVELS BUILDS OVER US TONIGHT AND MUCH OF TOMORROW, AND THIS WILL BE A DRY PERIOD FOR ALL LOCATIONS. A WARM FRONT MAY BRING SOME RAIN LATE TOMORROW AND TOMORROW NIGHT, ESPECIALLY AT THE COAST AND OVER THE UMPQUA.
A COLD FRONT MOVING ACROSS THE NORTHERN TEXAS PANHANDLE THIS MORNING WILL SHIFT WINDS OUT OF A NORTHERLY DIRECTION TO START OFF THE 12Z TAF CYCLE. A COLD FRONT CURRENTLY DRAPED ACROSS THE OKLAHOMA PANHANDLE WILL CONTINUE MOVING SOUTH THROUGH THE PANHANDLES. LEESIDE TROUGHING WILL ONCE AGAIN DEVELOP LATE TONIGHT AND INTO MONDAY. IN THE LOWER LEVELS.
Temperatures this afternoon, while noticeably cooler than yesterday, are still running well above late February normals. A bit cooler tonight, with lows in the mid to upper 30s, but this is still about 10 degrees above normal.
133 PM EST SUN FEB 28 2016 HIGH PRESSURE WILL REIGN OVER THE SOUTHEASTERN STATES THROUGH MONDAY.
A COLD FRONT EXTENDED FROM TRAVERSE CITY MICHIGAN TO MONROE WISCONSIN. ABOUT 50 TO 100 MILES WEST OF THE COLD FRONT. A SHORT WAVE TROUGH. A COLD FRONT WILL PUSH QUICKLY SOUTH THROUGH THE FORECAST AREA.
WINDS FOLLOWING A COLD FRONT ACROSS THE FORECAST AREA ARE GUSTY OUT OF THE NORTHWEST. EXPECT THE STRONGEST WIND SPEEDS OF 20-30 WITH GUSTS AROUND 40 MPH THIS MORNING TO DIMINISH FROM MID DAY THROUGH THE AFTERNOON AS HIGH PRESSURE MOVES IN QUICKLY BEHIND THE FRONT.
WARM ADVECTION RETURNS TO THE REGION TONIGHT AHEAD OF THE NEXT COLD FRONT MOVEING SOUTH ACROSS THE NORTHERN PLAINS. MODELS HAVE THE COLD FRONT ALONG THE NORTHERN NEBRASKA BORDER BY 12Z THEN ACROSS ALL BUT THE FAR SOUTHEAST CORNER OF THE FORECAST AREA BY 00Z. FRONT THEN CONTINUES TO MOVE SOUTH MONDAY NIGHT BECOMING NORTHEAST-SOUTHWEST ORIENTED AS UPPER TROUGH MOVES INTO THE REGION. THE FRONT ITSELF COMES THROUGH THE AREA DRY WITH PRECIP CHANCES INCREASING BEHIND THE FRONT LATE MONDAY AFTERNOON INTO MONDAY NIGHT AS FORCING ASSOCIATED WITH MULTI SEGMENTED UPPER TROUGH MOVES INTO THE REGION. SECONDARY AND STRONGER PART OF THE TROUGH DIGS TOWARD THE SOUTHERN PLAINS WHERE PRIMARY CYCLOGENESIS TAKES PLACE.
DOWN TO THE LOW TO MID 30 MTR RANGE BY 12Z. LATEST RADAR MOSAIC SHOWING PRECIP ASSOCIATED WITH THE COLD FRONT EARLIER PRETTY MUCH OUT OF SOUTHEAST WYOMING AND ONLY CLIPPING THE NORTHERN NEBRASKA PANHANDLE. NEXT COLD FRONT FORECAST TO MOVE INTO THE AREA FROM THE NORTH MONDAY AFTERNOON. SNOW ACCUMS SHOULD NOT BE A CONCERN OUTSIDE OF THE HIGH COUNTRY. COLD FRONT MOVED THROUGH THE AREA LAST NIGHT WILL BRING COOLER TEMPERATURES AND HIGHER HUMIDITIES TO THE AREA TODAY. BUT WITH THE COOLER TEMPERATURES. ANOTHER COLD FRONT EXPECTED TO MOVE IN FROM THE NORTH MONDAY.
THE ONGOING FORECAST FOR TODAY LOOKS TO BE IN GOOD SHAPE WITH HIGH PRESSURE AT THE SURFACE WEDGED INTO THE REGION FROM THE EAST. PREVAILING LOW LEVEL SOUTHERLY FLOW ACROSS THE CWA WILL RESULT IN NOTICEABLY WARMER CONDITIONS. WV IMAGERY THIS MORNING SHOWING A SIGNIFICANT LACK OF MOISTURE IN THE MID/UPPER LEVELS AS MID/UPPER RIDGE REMAINS PARKED OVER THE REGION. NEXT SYSTEM TAKING SHAPE OVER THE PLAINS MONDAY/MONDAY NIGHT WILL DRAW THE WEAK SURFACE BOUNDARY BACK NORTHWARD AS A WARM FRONT MONDAY NIGHT AND TAKE THE PESKY LIGHT SHOWERS WITH IT. MAXES SHOULD APPROACH 70 TODAY AND THE LOWER 70S MONDAY.
WITH RIDGE OVER THE FAR WESTERN CONUS. LOW PRESSURE IS LOCATED IN SOUTHERN MINNESOTA WITH HIGH PRESSURE OVER THE NORTHERN ROCKIES. A BACK DOOR COLD FRONT WILL ALLOW MUCH COOLER AIR TO INFILTRATE THE SOUTH DAKOTA PLAINS. BUT WITH THE COOLER AIR MOVING IN. WITH THE COOLER AIR MOVING IN. TO THE LOWER 50S ACROSS FAR SOUTHWEST SOUTH DAKOTA.
A COLD FRONT MOVING THROUGH WASHINGTON STATE THIS AFTERNOON WILL CROSS SOUTHEAST IDAHO LATER TONIGHT.
/ISSUED 349 AM CST SUN FEB 28 2016/ THE EXPECTED COLD FRONT IS ON TIME THIS MORNING AS IT IS CURRENTLY PUSHING INTO THE NORTHERN TEXAS PANHANDLE AND SHOULD MOVE INTO OUR NORTHERN ROW OF COUNTIES BY 12Z. MOST AREAS SHOULD SEE OVERNIGHT LOWS NEAR OR ABOVE THE FREEZING MARK. ALDRICH A GOOD CHUNK OF THE FIRST PART OF THE EXTENDED WILL BE CHARACTERIZED BY RIDGING OUT WEST AND A PERSISTENT LOW UP NEAR HUDSON BAY.
UPPER LEVEL TROF CONTINUES TO SWEEP ACROSS NORTHEAST COLORADO AND INTO THE CENTRAL PLAINS EARLY THIS MORNING. TEMPERATURES WILL BE COOLER TODAY BEHIND LAST NIGHTS FRONT AND READINGS WILL BE BACK INTO THE 50S TO AROUND 60. THE NEXT UPPER TROF WILL SPREAD MOISTURE BACK INTO THE MOUNTAINS LATER TONIGHT WITH A FEW SNOW SHOWERS DEVELOPING BEFORE DAWN. THESE DISTURBANCES WILL MAINLY AFFECT THE HIGH COUNTRY WITH PRECIPITATION AS WELL AS BRING PERIODS OF WINDY CONDITIONS. THERE WILL BE A SLIGHT CHANCE OF SHOWERS OVER THE PLAINS AS THE COLD FRONT APPROACHES IN THE AFTERNOON. TEMPERATURES WILL BE SIMILAR TO TODAYS READINGS BEFORE THE COLD FRONT ARRIVES IN THE LATE AFTERNOON TO EARLY EVENING.
HIGH PRESSURE ALOFT TODAY WILL GIVE WAY TO THE NEXT WEAK STORM SYSTEM LATE TONIGHT INTO MONDAY. AN UPPER RIDGE CONTINUES TO BUILD OVER NEVADA THIS MORNING WHILE A VERY WEAK DISTURBANCE CROSSES UTAH. TEMPERATURES TODAY WILL BE A BIT COOLER THAN THE LAST COUPLE OF DAYS OWING TO YESTERDAYS COLD FRONT. THE NEXT WEAK TROUGH WILL CROSS THE AREA LATE TONIGHT INTO TOMORROW.
ATTENTION IS DRAWN TO THE FAR NORTH CENTRAL AND TURTLE MOUNTAINS AREA TONIGHT IN ASSOCIATION WITH THE STRONG COLD FRONT THAT WILL OVERTAKE THE AREA FROM NORTH TO SOUTH TONIGHT. SOME LIGHT FREEZING RAIN MAY MIX IN ACROSS NORTHERN NORTH DAKOTA THIS MORNING AS FORECAST SOUNDINGS INDICATE A DRYING OF THE MID-LEVELS WHILE A SATURATED BOUNDARY LAYER REMAINS. THERE MAY BE A FEW BRIEF PERIODS OF LIGHT FREEZING RAIN BEFORE OR AFTER MID LEVEL SATURATION OCCURS. A BRIEF PERIOD OF VERY LIGHT FREEZING RAIN WILL BE REMAIN POSSIBLE IN THE MORNING OVER THE SOUTHWEST.
EVEN THOUGH COLD FRONT WILL MOVE THROUGH TODAY. RIDGE AXIS MOVES ACROSS THE FORECAST AREA TONIGHT. COOLED TEMPERATURES A BIT TUE NIGHT AS RIDGE AXIS MOVES ACROSS WITH LIGHT WINDS. DOES APPEAR RIDGE AXIS WILL MOVE ACROSS ON THU NIGHT WITH RETURN FLOW BY FRI AND INTO SAT.
A COLD FRONT WILL BRING A WIND SHIFT TO THE NORTH AND NORTHWEST AT ALL SITES.
UPPER RIDGE REBUILT OVER OUR AREA OVERNIGHT. NEXT PACIFIC COLD FRONT. STRONG WLY FLOW ALOFT EXPECTED IN THE UPPER TROUGH THAT WILL PASS THROUGH MONDAY. COLD FRONT WILL BRING SHOWERS AND LOWERING CEILINGS TO MVFR TO LOCAL IFR IN CENTRAL MTNS ALONG FRONT FROM 03Z/MON TO 09Z/MON. COLD FRONT WILL BRING WEST-NORTHWESTERLY WINDS 10-20KT WITH GUSTS TO 30KT. COLD FRONT WILL BRING SHOWERS AND LOWERING CEILINGS TO MVFR TO LOCAL IFR IN CENTRAL MTNS ALONG FRONT FROM 03Z/MON TO 09Z/MON. COLD FRONT WILL BRING WEST-NORTHWESTERLY WINDS 10-20KT WITH GUSTS TO 30KT FOR SHORT TIME ALONG FRONT FROM 03Z-09Z/MON. A WEAK RIDGE WILL CONTINUE BUILDING OVER THE REGION THIS MORNING FOR RELATIVELY CALM AND CLEAR CONDITIONS. MID-LEVEL MOISTURE WILL MOVE THROUGH THE RIDGE AFTER ABOUT 5 AM MST.
321 PM EST SUN FEB 28 2016 GUSTY WINDS WILL CONTINUE OVERNIGHT AS A COLD FRONT BRINGS RAIN SHOWERS.
Windy warm day on tap with high pressure moving over the SE U. , while low pressure tracks from the Upper Midwest to Great Lakes region. Otherwise, increase in clouds will be later today from the NW as a mid level s/wv and cold front approach. Monday through Monday evening should be quiet as weak high pressure moves across the area.
WHILE THE HIGH ELEVATIONS WILL SEE SNOW. SNOW ACCUMULATIONS TOMORROW AFTERNOON OVER THE HIGHER PEAKS WILL LIKELY BE UP TO A COUPLE INCHES.
THIS SYSTEM WILL PUSH A COLD FRONT INTO SE TX TUE AFTN AND OFF THE COAST BY EARLY EVENING.
1148 AM CST SUN FEB 28 2016 H5 ANALYSIS FROM EARLIER THIS EVENING HAD A RIDGE ACROSS THE WEST COAST OF THE CONUS WHICH EXTENDED INTO THE YUKON. AN ELONGATED ARE OF LOW PRESSURE EXTENDED FROM THE NW TERRITORIES OF CANADA EAST INTO NRN QUEBEC. SOUTH OF THE LOW. IN BETWEEN THE WEST COAST RIDGE AND THE ZONAL FLOW IN THE EASTERN CONUS. THIS DISTURBANCE ACROSS THE HIGH PLAINS. HAS SPREAD LIGHT RAIN TO SOUTH DAKOTA AND NORTHERN NEBRASKA OVERNIGHT AND HAS PUSHED A PACIFIC COLD FRONT THROUGH WESTERN AND NORTH CENTRAL NEBRASKA OVERNIGHT. RESULTING IN HIGHS IN THE LOWER 50S IN THE NORTHEASTERN CWA. AN ARCTIC COLD FRONT WILL BEGIN TO PUSH SOUTH FROM SRN CANADA INTO NORTH DAKOTA AND NRN MINNESOTA OVERNIGHT.
258 PM EST SUN FEB 28 2016 A HIGH PRESSURE RIDGE IS PROMOTING A CLEAR AND SUNNY DAY ACROSS THE REGION. TEMPERATURES HAVE WARMED NICELY INTO THE LOW TO MID 60S AS OF 20Z.
HIGH PRESSURE WILL MOVE TO THE EAST TONIGHT. RETURN FLOW ON THE BACK SIDE OF THE HIGH WILL RESULT IN A FEW CLOUDS ADVECTING IN FROM THE WEST AND SOUTHWEST MONDAY. WITH HIGHS IN THE LOW TO MID 70S SUNDAY.
VIS SATELLITE HAS CLEAR SKIES ACROSS MUCH OF THE REGION AS HIGH PRESSURE CONTINUES TO DOMINATE THE SOUTHEAST THIS WEEKEND. BKN 5KFT CLOUDS MOVE IN THIS EVENING AND LOWER THROUGH THE OVERNIGHT AS A COLD FRONT APPROACHES.
THE LOWER COLUMBIA BASIN ZONE, ENCOMPASSING MUCH OF BENTON AND FRANKLIN COUNTIES, WILL HAVE THE BEST POTENTIAL FOR SUSTAINED WINDS OF 30 TO 35 MPH WITH OCCASIONAL STRONG GUSTS.
VIS SATELLITE HAS CLEAR SKIES ACROSS MUCH OF THE REGION AS HIGH PRESSURE CONTINUES TO DOMINATE THE SOUTHEAST THIS WEEKEND. CLOUDS WILL BECOME AN ISSUE LATE THIS EVENING AS MOISTURE INCREASES AHEAD OF A WEAK COLD FRONT APPROACHING FROM THE NW. WATER VAPOR AND 5H ANALYSIS SHOWS AN UPPER RIDGE SHIFTING INTO THE OH/LOWER MS VALLEYS THIS MORNING. AS THE RIDGE SLIDES EAST TODAY THE WAVE WILL TRACK RAPIDLY EAST THROUGH THE GREAT LAKES AND ERN CORN BELT DRAGGING A WEAKENING COLD FRONT RAPIDLY THRU THE TN VALLEY LATE TONIGHT.
An upper trough was approaching the MS Valley, and has dropped a cold front into the region. The main differences in this forecast from 24 hrs ago is that models are trending slightly cooler the last couple of runs, w/today's front slightly cooler/stronger than yesterday's depiction. Even so, temps will recover nicely Monday as a secondary trough approaches the area.
A COLD FRONT IS EXPECTED TO PASS THROUGH THE LOCAL AREA TONIGHT.
1247 PM EST SUN FEB 28 2016 HIGH PRESSURE WILL SHIFT OFFSHORE THROUGH MONDAY.
dry cold front is making its way south through West Texas/SE New Mexico.
THE NORTHERN PLAINS WILL BE AFFECTED BY THE NORTHERN STREAM WITH SHORT WAVES ROTATING AROUND AN UPPER LOW CENTERED OVER HUDSON BAY. WATER VAPOR LOOP INDICATED ANOTHER UPPER TROUGH OVER THE NORTHWEST TERRITORIES. TROUGH WILL ROTATE ACROSS SOUTHERN CANADA AND SEND ANOTHER SHOT OF COLD AIR WILL MOVE OUT OF CANADA SUN NIGHT AND MON. ANOTHER SHORT WAVE TROUGH OFF THE PACIFIC NORTHWEST COAST WILL MOVE ACROSS SD/NE MON NIGHT.
The peak wind gusts will occur now through early afternoon before a cold front and cloud cover begin to limit wind gusts. The surface cold front was approaching SE Kansas and will continue to move southeast as the day progresses. Regardless, an elevated to locally significant fire weather risk will occur behind the cold front. A cold front will approach and move through the Ozarks today. The frontal passage will bring slightly cooler temperatures to the area for tonight with lows in the 30s.
Mainly zonal flow on Monday as a warm front moves over the far northern part of the state and points northward.