Aikyam-Lab/Synoptic-Bench huggingface dataset:
/ISSUED 511 PM CDT THU MAR 26 2015/ UPDATED THE SKY COVER GRIDS FOR TONIGHT SHOWING GRADUALLY CLEARING FROM THE NORTHWEST AS THE COLD FRONT PUSHES SOUTHEAST OF THE MIDSOUTH.
W/NW SFC WINDS 5-15KTS AFTER 17Z WITH SOME GUSTS TO 20 KTS AS A SECONDARY SURGE OF HIGH PRESSURE PUSHES ACROSS THE AREA. TEMPS HAVE FALLEN INTO THE LOWER 50S AREA WIDE WITH A FEW UPPER 40S. WHERE DEWPOINTS HAVE FALLEN INTO THE LOWER AND MIDDLE 30S. /ISSUED 308 PM CDT THU MAR 26 2015/ NORTHWEST WINDS HAVE INCREASED TO AROUND 15 TO 20 MPH WITH HIGHER GUSTS BEHIND A COLD FRONT THAT MOVED ACROSS THE REGION TODAY. TEMPERATURES TONIGHT TO FALL INTO THE UPPER 30S TO LOWER 40S AREAWIDE AS COOL HIGH PRESSURE BUILDS ACROSS THE REGION.
WEAK COLD FRONT WILL EDGE THROUGH CDS AROUND DAYBREAK BEFORE STALLING NEAR PVW AND LBB BY LATE MORNING. RETURN TO WEST WIND IS SHORT LIVED AS A WEAK REINFORCING COLD FRONT PUSHES INTO THE ROLLING PLAINS WITH A RELAXED PRESSURE GRADIENT ACROSS THE SOUTH PLAINS. THIS MAY RESULT IN LIGHT AND VARIABLE WIND DURING THE DAY BUT TEMPERATURES WILL BE ABOUT 10 DEGREES WARMER THAN TODAY WITH MOSTLY CLEAR SKIES. JORDAN AMPLIFIED UA RIDGING IMPACTING THE WRN CONUS WILL GRADUALLY SHIFT EWRD TOWARDS THE SOUTHERN PLAINS THIS WEEKEND.
DECREASED ITS COVERAGE AND SHIFTED THE AXIS CLOSER TO THE HIGHWAY 83 CORRIDOR LATE TONIGHT INTO EARLY FRIDAY MORNING IN ASSOCIATION WITH A WARM FRONT THAT WILL ENTER WESTERN NORTH DAKOTA AROUND 12 UTC. THE FORECAST FOR TONIGHT AND INTO FRIDAY OF A BAND OF PREDOMINATELY SNOW IN ASSOCIATION WITH A WARM FRONT THAT WILL ENTER WESTERN NORTH DAKOTA EARLY FRIDAY MORNING AND PROPAGATE EAST THROUGH THE DAY REMAINS ON TRACK AND WELL SUPPORTED BY THE 18 UTC GUIDANCE SUITE. JUST AHEAD OF THE SURFACE WARM FRONT. THE MAIN FORECAST ISSUE IN THE SHORT TERM PERIOD WILL BE PRECIPITATION AMOUNTS AND TYPE TONIGHT AND FRIDAY ASSOCIATED WITH A WEAK TROUGH OF LOW PRESSURE MOVING ACROSS WESTERN AND CENTRAL NORTH DAKOTA. A BUILDING WESTERN RIDGE WILL PUSH THE TROUGH INTO FAR EASTERN MONTANA AS A WARM FRONT.
438 PM PDT THU MAR 26 2015 UPDATED AVIATION SECTION HIGH PRESSURE AND WELL ABOVE NORMAL AFTERNOON TEMPERATURES ARE EXPECTED THROUGH FRIDAY.
745 PM EDT THU MAR 26 2015 COLD FRONT PUSHES EAST OF THE AREA THIS EVENING.
SOME INSTABILITY WAS PRESENT IN THE LOWER AND MID LEVELS ABOVE THIS INVERSION. LIGHT SOUTHWEST FLOW WAS PRESENT IN THE LOWEST LEVELS.
624 PM CDT THU MAR 26 2015 ACTIVE AND COOLER PATTERN IS IN PLACE ACROSS THE CONUS. SUBJECTIVE 12Z UPPER AIR ANALYSIS INDICATES 500MB TROUGH DIGGING INTO THE GREAT LAKES. WITH A COLD FRONT ACROSS MN/CENTRAL NEB TOWARD NM. THE REST OF THE NIGHT WILL BE DRY AND COOL AS HIGH PRESSURE SLIDES THROUGH THE AREA. A SHARP THERMAL GRADIENT WILL REMAIN ACROSS THE CWA AS UPPER-LEVEL TROUGH CONTINUES TO DIG INTO THE EAST AND RIDGING BUILDS TO THE WEST.
627 PM CDT THU MAR 26 2015 FOR 00Z TAFS /ISSUED 321 PM CDT THU MAR 26 2015/ AS OF 19Z THE COLD FRONT MENTIONED IN EARLIER DISCUSSIONS WAS STARTING TO ENTER NW ALABAMA. ANOTHER ROUND OF LIGHT SHOWERS ARE POSSIBLE FRIDAY AFTERNOON AS THE UPPER LEVEL TROUGH AXIS SWINGS THROUGH THE AREA. A REINFORCING SHOT OF COLD AIR ARRIVES FRIDAY NIGHT WITH TEMPERATURES EXPECTED TO DROP TO FREEZING FOR MOST AREAS. DUE TO THE WARM TEMPERATURES OF LATE WE HAVE STARTED TO ENTER THE GROWING SEASON AND ANY TYPE OF BELOW FREEZING TEMPERATURES WOULD WARRANT SOME SORT OF FREEZE PRODUCT.
A SECOND COLD FRONT WILL QUICKLY APPROACH OVERNIGHT. /ISSUED 336 PM CDT THU MAR 26 2015/ AS AN UPPER LEVEL TROUGH CONTINUES TO MOVE OFF TO OUR EAST TODAY.
LOWS WILL REMAIN GENERALLY STEADY IN THE 60S UNDER MOSTLY CLOUDY SKIES AND DO NOT EXPECT ANY SIGNIFICANT FOG FORMATION DUE TO THE INCREASING SOUTHWEST FLOW AHEAD OF THE COLD FRONT. EXPECT INCREASING RAIN CHANCES AS COLD FRONT PUSHES THROUGH THE REGION AND EXITS INTO THE ATLC LATE IN THE DAY.
832 PM EDT THU MAR 26 2015 COLD FRONT PUSHES EAST OF THE AREA THIS EVENING.
/ISSUED 534 PM CDT THU MAR 26 2015/ A FAST MOVING BUT WEAK COLD FRONT WILL MOVE THROUGH THE TAF SITES OVERNIGHT.
/ISSUED 358 PM CDT Thu Mar 26 2015/ (Tonight and Friday) Look for dry conditions, cooler temperatures, and light winds. Overnight lows will be mainly in the lower to mid 40s, with possibly upper 30s at some locations along our Interstate 10 corridor.
A FAIRLY STRONG COLD FRONT CONTINUES TO MOVE ACROSS THE CWA THIS EVENING. THE UPPER TROUGH IS STILL HANGING BACK WELL TO OUR WEST WITH ENOUGH LIFT FOR POST-FRONTAL SHOWERS. THE COLD FRONT HAS PUSHED TO NEAR KMGM.
WEAK COLD FRONT WILL EDGE THROUGH CDS AND PERHAPS PVW AFTER SUNRISE AHEAD OF N-NE WINDS BEFORE DISSOLVING SOON THEREAFTER. RETURN TO WEST WIND IS SHORT LIVED AS A WEAK REINFORCING COLD FRONT PUSHES INTO THE ROLLING PLAINS WITH A RELAXED PRESSURE GRADIENT ACROSS THE SOUTH PLAINS. THIS MAY RESULT IN LIGHT AND VARIABLE WIND DURING THE DAY BUT TEMPERATURES WILL BE ABOUT 10 DEGREES WARMER THAN TODAY WITH MOSTLY CLEAR SKIES. JORDAN AMPLIFIED UA RIDGING IMPACTING THE WRN CONUS WILL GRADUALLY SHIFT EWRD TOWARDS THE SOUTHERN PLAINS THIS WEEKEND.
A RETURN OF COASTAL FOG AND LIGHT ONSHORE FLOW WILL MEAN COOLER TEMPERATURES ON FRIDAY.
906 PM EDT THU MAR 26 2015 A DEEP UPPER LVL TROUGH OVER THE MISS VALL WILL SWING EAST ACROSS PENNSYLVANIA THIS WEEKEND. SFC ANALYSIS AT 01Z SHOWS COLD FRONT HAS CLEARED THE SE COUNTIES. RESIDUAL LOW LVL MOISTURE ASCENDING THE HIGH TERRAIN WILL PRODUCE SCT -SHRA EARLY. ACROSS THE RIDGE/VALLEY REGION FROM KAOO NE THRU KIPT. TO ARND 40F ACROSS THE LOWER SUSQ VALLEY. APPROACH OF UPPER LVL TROUGH COULD SUPPORT A FEW PM SNOW SHOWERS. MAX TEMPS SHOULD RANGE FROM ONLY ARND FREEZING OVR THE NW MTNS.
CHATTANOOGA AIRPORT, TN 41 52 31 48 / 80 10 10 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 40 50 27 45 / 80 20 10 0 OAK RIDGE, TN 38 48 26 43 / 80 20 10 0 TRI CITIES AIRPORT, TN 39 47 25 39 / 90 30 20 10 NC.
644 PM CDT THU MAR 26 2015 12Z UA ANALYSIS HAS AN 850MB COLD FRONT FROM THE EASTERN GREAT LAKES INTO NORTHERN OKLAHOMA. WEAK TROFS WERE ACROSS THE NORTHERN PLAINS AND NORTHERN GREAT LAKES. 18Z SFC ANALYSIS HAS A COLD FRONT FROM NEAR KPIR TO KMKG. A WELL MIXED LOWER ATMOSPHERE HAS KEPT THE LOW CLOUDS FROM NORTHEAST IOWA INTO WISCONSIN FROM MAKING MUCH SOUTHWARD PROGRESS. THE WEAK COLD FRONT WILL MOVE THROUGH THE AREA THIS EVENING. THIS FEATURE COMBINED WITH A STABILIZING ATMOSPHERE MAY ALLOW THE LOW CLOUDS TO START MOVING SOUTH INTO THE AREA. THEN LOW TEMPERATURES TONIGHT COULD END UP BEING WARMER. IF THE LOW CLOUDS MOVE INTO THE AREA OVERNIGHT THEN THERE WOULD BE MORE CLOUDS AROUND FOR AT LEAST FRIDAY MORNING. THEN HIGH TEMPERATURES ON FRIDAY WOULD BE MUCH COOLER.
1147 PM CDT THU MAR 26 2015 12Z UA ANALYSIS HAS AN 850MB COLD FRONT FROM THE EASTERN GREAT LAKES INTO NORTHERN OKLAHOMA. WEAK TROFS WERE ACROSS THE NORTHERN PLAINS AND NORTHERN GREAT LAKES. 18Z SFC ANALYSIS HAS A COLD FRONT FROM NEAR KPIR TO KMKG. A WELL MIXED LOWER ATMOSPHERE HAS KEPT THE LOW CLOUDS FROM NORTHEAST IOWA INTO WISCONSIN FROM MAKING MUCH SOUTHWARD PROGRESS. THE WEAK COLD FRONT WILL MOVE THROUGH THE AREA THIS EVENING. THIS FEATURE COMBINED WITH A STABILIZING ATMOSPHERE MAY ALLOW THE LOW CLOUDS TO START MOVING SOUTH INTO THE AREA. THEN LOW TEMPERATURES TONIGHT COULD END UP BEING WARMER. IF THE LOW CLOUDS MOVE INTO THE AREA OVERNIGHT THEN THERE WOULD BE MORE CLOUDS AROUND FOR AT LEAST FRIDAY MORNING. THEN HIGH TEMPERATURES ON FRIDAY WOULD BE MUCH COOLER.
709 PM CDT THU MAR 26 2015 THE FORECAST FOR TONIGHT AND INTO FRIDAY OF A BAND OF PREDOMINATELY SNOW IN ASSOCIATION WITH A WARM FRONT THAT WILL ENTER WESTERN NORTH DAKOTA EARLY FRIDAY MORNING AND PROPAGATE EAST THROUGH THE DAY REMAINS ON TRACK AND WELL SUPPORTED BY THE 18 UTC GUIDANCE SUITE. JUST AHEAD OF THE SURFACE WARM FRONT. THE MAIN FORECAST ISSUE IN THE SHORT TERM PERIOD WILL BE PRECIPITATION AMOUNTS AND TYPE TONIGHT AND FRIDAY ASSOCIATED WITH A WEAK TROUGH OF LOW PRESSURE MOVING ACROSS WESTERN AND CENTRAL NORTH DAKOTA. A BUILDING WESTERN RIDGE WILL PUSH THE TROUGH INTO FAR EASTERN MONTANA AS A WARM FRONT.
AND CONFLUENT FLOW IN THE LOWER LEVELS HAS DEVELOPED ACROSS THE NORTHERN GULF OF MEXICO AND THE SOUTHEASTERN UNITED STATES. THE WESTERN ATLANTIC RIDGE AXIS REMAINS INTACT. A COLD FRONT NEAR THE TEXAS COAST WILL MOVE QUICKLY SOUTHEASTWARD. A BROAD AREA OF HIGH PRESSURE WILL SLIDE SOUTHEASTWARD THROUGH THE EASTERN UNITED STATES. A COLD FRONT WILL REACH THE AREA FRIDAY NIGHT.
857 PM CDT Thu Mar 26 2015 Quiet, but continued much cooler than normal. Canadian high pressure will gradually build into the area from the northwest. Upper level trough rather prominent on water vapor satellite imagery this afternoon, generally marking the back edge of the cloud line. 850mb cold air advection into area after the cold front that has moved east of region, with pcpn cleared area.
1016 PM EDT THU MAR 26 2015 A COLD FRONT WILL SLOWLY SHIFT SOUTH THROUGH OUR REGION TONIGHT AND FRIDAY.
A CANADIAN COLD FRONT EXTENDED FROM GREEN BAY TO THE TWIN CITIES TO ABERDEEN SOUTH DAKOTA. THIS WILL COLD AIR ALONG WITH SOME SNOW ON THE GROUND IN SOME PLACES WILL KEEP HIGH TEMPERATURES IN THE LOWER AND MID 30S. 12Z MODELS CONTINUE TO SHOW THAT A SHORT WAVE TROUGH WILL MOVE QUICKLY SOUTHEAST THROUGH WESTERN MINNESOTA AND WESTERN IOWA.
AREA OF RAIN CONTINUES MOVING SLOWLY EASTWARD ACROSS MIDDLE TENNESSEE THIS EVENING, WITH TEMPERATURES DROPPING IN THE COOLER, POST-FRONTAL AIR MASS. CLEARING LINE HAS ALREADY REACHED CLARKSVILLE WITH THE UPPER TROUGH POISED TO MOVE ACROSS THE MID STATE OVERNIGHT.
1052 PM EDT THU MAR 26 2015 A DEEP UPPER LVL TROUGH OVER THE MISS VALL WILL SWING EAST ACROSS PENNSYLVANIA THIS WEEKEND. COLD FRONT HAS CLEARED THE REGION. ACROSS THE RIDGE/VALLEY REGION FROM KAOO NE THRU KIPT. TO ARND 40F ACROSS THE LOWER SUSQ VALLEY. APPROACH OF UPPER LVL TROUGH COULD SUPPORT A FEW PM SNOW SHOWERS. MAX TEMPS SHOULD RANGE FROM ONLY ARND FREEZING OVR THE NW MTNS.
UPPER AIR MAPS THIS EVENING SHOW THE AXIS OF A SHARPLY DEFINED HIGH LEVEL TROUGH STRETCHING FROM THE GREAT LAKES TO CENTRAL TEXAS. THE TROUGH PIVOTS EASTWARD TONIGHT. THIS ALLOWS A COLD FRONT DRAPED FROM OFF THE NEW ENGLAND STATES TO ACROSS SOUTHEAST LOUISIANA TO PROGRESS EASTWARD ACROSS THE HEART OF THE FORECAST AREA SHORTLY AFTER MIDNIGHT. BUT WILL MAINTAIN AN ISOLATED OCCURRENCE OF A STORM UNTIL THE AXIS OF THE UPPER TROUGH MAKES A CLOSER APPROACH AND SHUNTS BETTER DYNAMICS EAST. AHEAD OF A COLD FRONT THAT WAS ANALYZED FROM NORTHERN ALABAMA TO CENTRAL LOUISIANA.
Weak upper trough this afternoon continues to push southeast across South Dakota into northern Nebraska. Elsewhere, winds are light with highs today on the cool side in the lower 50s. Fortunately, most of the precip is expected to fall while temps are above freezing. With the partly to mostly cloudy skies and no strong signal of temperature advection, have lowered highs especially over north central areas down to the lower 50s.
HIGH PRESSURE ALOFT WILL PREVAIL THROUGH FRIDAY MORNING. A FAST MOVING LOW PRESSURE SYSTEM WILL IMPACT THE REGION FRIDAY AFTERNOON AND NIGHT. AN UPPER RIDGE WILL REMAIN OVER THE REGION THROUGH FRI MORNING. THE RIDGE WILL SHIFT EAST FRI AFTERNOON. ALLOWING AN UPPER TROF AND ASSOCIATED COLD OR OCCLUDED FRONT TO APPROACH THE CWA FROM THE WEST. THE UPPER TROF AND SURFACE FRONT WILL MOVE QUICKLY ACROSS THE CWA FRI NIGHT.
THERE MAY BE SOME SHELTERED LOCATIONS IN THE NORTH OR NORTHWESTERN HALF OF THE STATE THAT REACH FREEZING BUT THINK THIS WILL BE MORE THE EXCEPTION THAN THE RULE TONIGHT.
642 PM CDT Thu Mar 26 2015 A highly amplified upper level pattern with a large ridge over the western CONUS and deep trough axis over the MS Vly region will keep the region in a nw flow pattern in the near term. Otherwise will see the long wave trough axis start continue to shift east on Friday with decreasing clouds by afternoon.
725 PM EDT THU MAR 26 2015 A COLD FRONT WILL SLOWLY SHIFT SOUTH THROUGH OUR REGION TONIGHT AND FRIDAY.
HIGH TEMPERATURES IN THE LOW 60S NORTON AND HILL CITY WITH UPPER 60S TO LOW 70S ACROSS THE REMAINDER OF THE AREA.
1101 PM EDT THU MAR 26 2015 A DEEP UPPER LVL TROUGH OVER THE MISS VALL WILL SWING EAST ACROSS PENNSYLVANIA THIS WEEKEND. COLD FRONT HAS CLEARED THE REGION. ACROSS THE RIDGE/VALLEY REGION FROM KAOO NE THRU KIPT. TO ARND 40F ACROSS THE LOWER SUSQ VALLEY. APPROACH OF UPPER LVL TROUGH COULD SUPPORT A FEW PM SNOW SHOWERS. MAX TEMPS SHOULD RANGE FROM ONLY ARND FREEZING OVR THE NW MTNS.
1149 PM CDT Thu Mar 26 2015 Quiet, but continued much cooler than normal. Canadian high pressure will gradually build into the area from the northwest. Upper level trough rather prominent on water vapor satellite imagery this afternoon, generally marking the back edge of the cloud line. 850mb cold air advection into area after the cold front that has moved east of region, with pcpn cleared area.
853 PM EDT THU MAR 26 2015 A COLD FRONT IS APPROACHING THE CHESAPEAKE BAY.
543 PM MDT THU MAR 26 2015 00Z TAF CYCLE UPPER LEVEL RIDGE CENTERED OVER CENTRAL AND SRN CALIFORNIA WILL SLOWLY SHIFT EASTWARD TOWARD NM TONIGHT AND FRIDAY.
1028 PM EDT THU MAR 26 2015 A LARGE SCALE UPPER LEVEL TROUGH WILL DIG SOUTHEAST ACROSS THE GREAT LAKES AND OHIO VALLEY THROUGH FRIDAY NIGHT.
NO UPDATE TO THE FORECAST FOR TONIGHT WHICH WILL BE CLEAR AND RELATIVELY MILD UNDER A BUILDING HIGH PRESSURE.
AHEAD OF A COLD FRONT THAT WAS ANALYZED FROM NORTHERN ALABAMA TO CENTRAL LOUISIANA. A LONGWAVE TROF OVER THE CENTRAL STATES DEEPENS WHILE ADVANCING INTO THE EASTERN STATES. A COLD FRONT CURRENTLY ADVANCING ACROSS MISSISSIPPI AND NORTHERN ALABAMA.
1129 PM CDT Thu Mar 26 2015 A highly amplified upper level pattern with a large ridge over the western CONUS and deep trough axis over the MS Vly region will keep the region in a nw flow pattern in the near term. Otherwise will see the long wave trough axis start continue to shift east on Friday with decreasing clouds by afternoon.
SKIES WILL EVENTUALLY CLEAR OUT TONIGHT ALLOWING SURFACE TEMPS TO BOTTOM OUT INTO THE LOWER TEENS. SOME CONCERN HERE IS WITH ANY FREEZING OR SUB FREEZING VALLEY TEMPERATURES AS THE RAIN MOVES INTO THE AREA. TEMPS WILL WARM JUST ENOUGH WHERE FREEZING PRECIP WONT BE A THREAT AND IF THE COLUMN DOES WET BULB.
HIGH PRESSURE WILL BUILD INTO THE REGION BY MIDWEEK RESULTING IN DECREASING CLOUDINESS.
AS HIGH PRESSURE AT THE SURFACE REMAINS IN CONTROL OF THE FORECAST. /ISSUED 309 AM CST TUE JAN 27 2015/ WEAK FRONTAL BOUNDARY WILL SHIFT SOUTH ACROSS THE REGION TODAY ALLOWING FOR A REINFORCEMENT OF DRY AIR AS HIGH PRESSURE REBUILDS AREAWIDE. TEMPERATURES TO CLIMB INTO THE LOWER 70S THIS AFTERNOON UNDER MOSTLY SUNNY SKIES DUE TO STRONG NORTHWEST FLOW ALOFT.
WITH UPPER RIDGING OVER THE DESERT SW/SOUTHERN ROCKIES AND A MAJOR WINTER STORM AFFECTING THE NORTHERN MID ATLANTIC AND ESPECIALLY NEW ENGLAND. THIS HAS HELPED WARM HIGHS INTO THE LOWER 50S NEAR/WEST OF I-65. WITH HIGHS ABOUT 10 DEGREES COOLER IN WINCHESTER. AS HIGH PRESSURE BUILDS FROM THE MID MISSISSIPPI VALLEY TO THE OHIO VALLEY. AT LEAST DURING THE MORNING AND EARLY AFTERNOON SHOULD HELP TEMPER HIGHS ONLY INTO THE LOWER 50S.
HOWEVER NEW NAM SHOWING HIGH LOW LEVEL MOISTURE WITH NW WIND FETCH STILL OVER THE HIGHER SMOKY MOUNTAINS THROUGH THE AFTERNOON. DUE TO THE AMOUNT OF SNOW OVER THE HIGHER ELEVATIONS ABOVE 3000 FEET IN THE PARK AND CONTINUED CHANCE OF SNOW HAVE EXTENDED THE WINTER WEATHER ADVISORY IN THAT AREA UNTIL 600 PM BUT ALLOWED IT TO EXPIRE ELSEWHERE. TEMPERATURES ARE WARMING INTO THE LOWER 40S IN THE SOUTH BUT UPPER 20S TO 30S ELSEHERE.
932 AM PST TUE JAN 27 2015 Areas of low clouds and fog will persist across portions of Inland Northwest as high pressure remains in place.
/ISSUED 308 AM CST TUE JAN 27 2015/ ANOTHER UNSEASONABLY WARM DAY IS ON TAP FOR EASTERN OKLAHOMA AND WESTERN ARKANSAS TODAY AS HIGH PRESSURE PREVAILS AT THE SURFACE AND ALOFT.
/ISSUED 342 AM CST Tue Jan 27 2015/ Mid and high cloud will decrease today as moisture at these levels heads into an upper ridge axis over the region. The same appears to be on tap Wednesday as the upper ridge remains over the region, except highs could be closer to 15 to 20 degrees above normal.
1013 AM CST TUE JAN 27 2015 CLOUD COVER HAS SLID DOWN THE BACKSIDE OF THE UPPER TROUGH. ADJUSTED TEMPERATURES SLIGHTLY TO BE A BIT COOLER.
THIS IS WHERE TEMPERATURES ARE IN THE LOW TO MIDDLE 30S. CURRENTLY SHOWING OVERNIGHT LOWS FALLING INTO THE LOW 20S ACROSS THE PLATEAU BUT THERE MIGHT BE A WRENCH THROWN INTO THOSE PLANS IF THE CLOUDS HANG ON MUCH PAST MIDNIGHT.
A WEAKENING UPPER LOW CURRENTLY CENTERED OVER THE CENTRAL SIERRA NEVADA WILL CONTINUE TO EJECT ACROSS THE GREAT BASIN TODAY. AND THE MOISTURE THAT WAS SOURCED EARLIER IN THE STORMS EVOLUTION HAS NOW WRAPPED AROUND TO THE NORTH OF THE LOW. MAY REACH THE HIGHER VALLEYS OF NORTHERN UTAH AND ALSO SOUTHWEST WYOMING. AFTERNOON MAXES TODAY WILL TREND SLIGHTLY COOLER TODAY AND TOMORROW.
150 PM PST TUE JAN 27 2015 HIGH PRESSURE WILL BUILD INTO THE REGION BY MIDWEEK RESULTING IN WARMING TEMPERATURES AND DECREASING CLOUDINESS.
1252 PM EST TUE JAN 27 2015 LOW PRESSURE WILL CONTINUE TO LIFT NORTHEAST AWAY FROM THE AREA THIS AFTERNOON. HIGH PRESSURE WILL BUILD IN FROM THE WEST WEDNESDAY.
EARLY WED OUR SFC WINDS RETURN OUT OF THE SE AS HIGH PRESSURE MOVES E. OUR CLIMB WINDS ARE NE IN THE LOWEST LEVELS AND QUICKLY BACK TO N/NW ALOFT WITH NOMINAL INCREASE IN SPEED ALONG THE WAY. /ISSUED 309 AM CST TUE JAN 27 2015/ WEAK FRONTAL BOUNDARY WILL SHIFT SOUTH ACROSS THE REGION TODAY ALLOWING FOR A REINFORCEMENT OF DRY AIR AS HIGH PRESSURE REBUILDS AREAWIDE. TEMPERATURES TO CLIMB INTO THE LOWER 70S THIS AFTERNOON UNDER MOSTLY SUNNY SKIES DUE TO STRONG NORTHWEST FLOW ALOFT.
1249 PM EST TUE JAN 27 2015 LOW PRESSURE OFF THE COAST OF SOUTHERN NEW ENGLAND WILL CONTINUE TO MOVE NORTHEAST. HIGH PRESSURE OVER THE MISSISSIPPI VALLEY WILL BUILD INTO THE CAROLINAS THROUGH WEDNESDAY.
155 PM EST TUE JAN 27 2015 A TROUGH OF LOW PRESSURE OVER NORTHWEST PENNSYLVANIA WILL DISSIPATE TODAY.
A very light, on-and-off northwest wind will likely keep temperatures above freezing for most locations.
1209 PM PST TUE JAN 27 2015 Areas of low clouds and fog will persist across portions of Inland Northwest as high pressure remains in place.
WEAK UPPER DISTURBANCE EJECTING NORTH THROUGH THE GREAT BASIN MAY TRICKLE OUT A FEW SNOW SHOWERS OVER THE HIGHER TERRAIN ALONG THE CONTINENTAL DIVIDE LATER TODAY AND TONIGHT. WARM RIDGE OF HIGH PRESSURE DRIFTING ACROSS COLORADO AND WARMING CHINOOK BREEZES OFF THE MOUNTAINS. BRINGING ISOLATED TO LOW END SCATTERED SNOW TO THE CENTRAL MTS AS WELL AS INCREASED CLOUDINESS FOR ALL OF THE HIGHER TERRAIN. AND INTO THE 40S TO LOWER 50S FOR THE HIGH VALLEYS. IT WILL PUSH A COLD FRONT DOWN EASTERN CO LATE WED NIGHT.
THE UPPER LEVEL RIDGE AXIS WILL REMAIN WEST OF THE REGION THROUGH THE PERIOD.
MEDIUM MID LEVEL RIDGE AXIS TRANSLATES EAST ACROSS WI DURG THE DAY.
RIDGING ALOFT. WARM CONDITIONS CONTINUE ON WEDNESDAY WITH FLATTENING RIDGING ALOFT AND SOUTH TO SOUTHWEST LOW LEVEL FLOW STRENGTHENING.
HIGH PRESSURE CURRENTLY OVER THE AREA WILL BEGIN TO BREAK DOWN TODAY AS A WEATHER SYSTEM FROM THE SOUTH AND A WEAK SYSTEM FROM THE WEST COLLIDES WITH THE AREA. MOST MODELS WANT TO MIX THINGS OUT ACROSS THE LOWER ELEVATIONS AND HAVE THE TYPICAL COLD SPOTS LIKE PENDLETON.
AS THE BACKSIDE OF A LARGE UPPER TROUGH AXIS BEGINS TO SHIFT EWD. THIS HAS AT LEAST ALLOWED TEMPS ACROSS MANY AREAS TO WARM INTO THE LOWER/MID 40S. AS HIGH PRESSURE MOVES EWD INTO THE OH VALLEY STATES.
EXPECT VFR CONDITIONS TO MOVE IN LATER THIS EVENING OR OVERNIGHT FOR ALL TAF SITES AS THE UPPER LEVEL TROUGH CONTINUES EASTWARD.
AND THE LOWER ELEVATIONS OF MALHEUR COUNTY AND HARNEY COUNTY. WV IMAGERY SHOWS A WEAK UPPER LEVEL LOW MOVING NORTHWARD OVER SOUTHERN NEVADA. BUT MID AND HIGH CLOUDS WILL MAKE IT HARDER TO BURN OFF THE LOWER CLOUDS AND FOG.
A SHARP RIDGE REMAINS OVER THE CENTRAL U. WITH A DEEP TROUGH OFF THE EAST COAST AND A DEEPENING TROUGH OFF THE WEST COAST. THE RIDGE WILL PROVIDE WARM TEMPS AND DRY WEATHER THROUGH WEDNESDAY.
247 PM CST TUE JAN 27 2015 RIDGING ACROSS THE AREA WILL QUICKLY TRANSITION TO SOUTHWESTERLY FLOW ALOFT THIS EVENING AS AN UPPER LEVEL DISTURBANCE TRANSLATES EASTWARD FROM NORTHERN NEVADA INTO THE CENTRAL PLAINS.
WEAK UPPER LEVEL DISTURBANCE ON THE BACK SIDE OF DEEP UPPER LOW THAT IS NOW MOVING OFF THE COAST OF THE NORTHEAST STATES HAS NOW WEAKENED TO THE POINT THAT SNOW SHOWERS HAVE ABOUT ENDED. BUT THE LOW LEVEL MOISTURE TRAPPED NEAR THE GROUND IN THE DRYING AIR MASS WAS STILL PRODUCING A FEW FLURRIES. MODELS TRYING TO HANG ONTO THE LOW CLOUDS INTO THE EVENING WITH UPPER FLOW BRINGING CLOUDS INTO REGION FROM THE NW. HIGH PRESSURE WILL MOVE OVERHEAD WEDNESDAY FOR A MOSTLY SUNNY DAY AND SLIGHTLY WARMER TEMPERATURES.
418 PM EST TUE JAN 27 2015 HIGH PRESSURE AND A DRY AND COLD AIRMASS WILL PUSH ACROSS THE AREA TONIGHT AND WEDNESDAY.
1015 AM CST TUE JAN 27 2015 HIGH PRESSURE OVER THE AREA WILL KEEP LIGHT WINDS IN PLACE TODAY.
BROAD HIGH PRESSURE WILL DOMINATE. FEW TO SCT HIGH CIRRUS POSSIBLE TONIGHT OVER A DIRTY RIDGE TO THE WEST. VFR CONDITIONS TO PREVAIL THE NEXT 24 HOURS AS HIGH PRESSURE AT THE SURFACE AND ALOFT REMAIN ANCHORED OVER SOUTH TEXAS. DEEP SOUTH TEXAS REMAINS IN BETWEEN THE TWO UPPER LARGE UPPER TROUGHS THAT ARE DOMINATING BOTH THE WESTERN AND EASTERN COASTS. UPPER RIDGE SITS OVER HEAD AND IS FORECAST TO STRENGTHEN TODAY AS THE WESTERN TROUGH DEEPENS SLIGHTLY.
16Z SURFACE PLOT SHOWED LOW PRESSURE ALONG THE EASTERN SEABOARD AND WEAK HIGH PRESSURE ACROSS THE CENTRAL PART OF THE COUNTRY. THIS LOW WILL CONTINUE TRACKING SOUTHEAST TODAY AND DRAG A WEAK DRY COLD FRONT ACROSS OUR CWA THIS MORNING REINFORCING THE DRY AIRMASS OVER OUR REGION. IN THE WAKE OF THE COLD FRONT. THE AMPLIFIED RIDGING TO OUR WEST TODAY WILL DAMPEN AND SHIFT OVER OUR CWA WEDNESDAY. THE RIDGING SURFACE AND ALOFT WILL MAINTAIN DECENT INSOLATION AND ALLOW TEMPERATURES TO CLIMB INTO THE 60S AGAIN OVER MUCH OF THE AREA.
COLD SURGE ASSOCIATED WITH LARGE BLIZZARD SYSTEM OFF THE THE EAST COAST WILL BE ADVANCIN SOUTHWARD TONIGHT AND MAINTAIN THE DRY BUT SOMEWHAT COOLER DAYTIME TEMPERATURES WEDNESDAY.
WITH INCREASING SUNSHINE FOR THE REGION AS A HIGH PRESSURE ALOFT MOVES IN. DRY AND A LITTLE WARMER FOR WEDNESDAY.
TEMPERATURES WILL RISE TO NEAR FREEZING ON WEDNESDAY WITH PARTLY CLOUDY SKIES.
320 PM CST TUE JAN 27 2015 THE STRATUS HAS HELD TOGETHER QUITE WELL ACROSS OUR FA TODAY WITH LOW LEVEL RIDGING OVERHEAD. THIS IS DUE TO THE LOW LEVEL FLOW BECOMING MORE SSW ALONG WITH INCREASING WIND SPEED. THIS WILL RESULT IN DOWNSLOPE OFF THE BUFFALO RIDGE WHICH MAY ERODE THE WESTERN EDGE OF THE CLOUDS. IT WILL BE ANOTHER MILD NIGHT WITH LOWS FROM THE LOWER 20S IN OUR FAR EASTERN WI COUNTIES TO THE LOWER 30S NEAR THE SD BORDER. THIS IS DUE TO LOW LEVEL MOISTURE INCREASING AHEAD OF AN APPROACHING LOW PRESSURE SYSTEM IN THE DAKOTAS IN CONJUNCTION WITH DECENT UPGLIDE AND ADIABATIC OMEGA. THE MAIN CONCERN ON WEDNESDAY IS THE HIGH TEMPERATURE FORECAST.
1221 PM EST TUE JAN 27 2015 A TROUGH OF LOW PRESSURE OVER NORTHWEST PENNSYLVANIA WILL DISSIPATE TODAY.
1151 AM CST TUE JAN 27 2015 WELL THE LOW CLOUDS ARE NOT SHOWING ANY SIGNS OF THINNING ANYWHERE AND ARE ACTUALLY BACKING UP TO THE WEST IN SOME AREAS. WILL ALSO LOWER THE HIGH TEMPERATURE FORECAST TODAY UNDER THE CLOUDS OR FOR AREAS ALONG AND EAST OF THE RED RIVER VALLEY. HIGH TEMPS IN THESE AREAS WILL LIKELY BE CAPPED IN THE LOWER 30S. BEFORE AN UPPER LEVEL TROF SAGS OVER THE AREA BY THE WEEKEND.
1233 PM EST TUE JAN 27 2015 A TROUGH OF LOW PRESSURE OVER NORTHWEST PENNSYLVANIA WILL DISSIPATE TODAY.
The best precip chances will be over the high Sierra where 1-2 inches of snow will fall above 6000 feet. Haze will keep vis between 3-6 miles through the afternoon as dust/smog is trapped in the lower atmosphere. Showers will begin to taper off by this evening as the low lifts northward through the Great Basin.
1234 PM EST TUE JAN 27 2015 PRIMARILY VFR CONDITIONS THROUGH THE TAF CYCLE AS AN AREA OF HIGH PRESSURE SLIDES THROUGH THE REGION. WEATHER WILL CONTINUE OVER THE AREA AS HIGH PRESSURE SETTLES SOUTH INTO THE AREA ON BACKSIDE OF MAJOR STORM LIFTING UP THE NORTHEAST COAST. TEMPERATURES WILL REMAIN BELOW AVERAGE AS HIGHS ONLY CLIMB INTO THE LOWER TO MIDDLE 20S BY AFTERNOON. THIS WILL COMBINE WITH LIGHT WINDS ASSOCIATED WITH THE HIGH TO PRODUCE RATHER DECENT RADIATIONAL COOLING. THE BAJA LOW HAS SIMTULTANEOUSLY BEGUN TO OPEN UP AND HELP ERODE THE RIDGE POSITIONED OVER THE WESTERN UNITED STATES.