Aikyam-Lab/Synoptic-Bench huggingface dataset:
216 AM EST WED FEB 3 2016 A DEEP CYCLONE OVER NORTHERN KANSAS WILL LIFT NORTHEAST INTO SOUTHWEST WISCONSIN AND WEAKEN BY WEDNESDAY MORNING. THE WARM FRONT ASSOCIATED WITH THIS SYSTEM WILL LIFT UP ACROSS THE AREA THIS EVENING WITH NUMEROUS SHOWERS AND EMBEDDED THUNDERSTORMS. THE COLD FRONT ASSOCIATED WITH THE LOW WILL SWEEP EASTWARD ACROSS THE AREA OVERNIGHT CAUSING ANOTHER ROUND OF SHOWERS AND POSSIBLY THUNDERSTORMS. DEEP LYRD CYCLONE OVR NRN KS THIS AFTN WILL OPEN EWD AND DEAMPLIFY SHRT TERM. SOME LAKE ENHANCED SNOW SHOWERS EXPECTED WED NIGHT INTO THURS MORNING AS THERMAL TROUGH ADVECTS OVER THE AREA AMID LINGERING MOISTURE AND CYCLONIC FLOW. WINDS BACK TO THE SW BY THURS AFTERNOON WITH LOWERING INVERSION AS MIDLEVEL TROUGH AXIS PASSES OVERHEAD. SOME LATE DAY WAA SHOULD PUSH HIGH TEMPS INTO THE LOW 30S.
445 AM EST WED FEB 3 2016 A NEW LOW PRESSURE AREA WAS FORMING OVER LOWER MICHIGAN THIS MORNING. SOME RAIN AND SNOW SHOWERS WILL BECOME ALL SNOW AS TEMPERATURES DROP TOWARD FREEZING. LOWS TONIGHT WILL FALL INTO THE LOWER TO MIDDLE 20S. SOME COLDER AIR WAS BEGINNING TO SPREAD INTO THE AREA FROM THE NORTHWEST ON THE SOUTHWEST SIDE OF THIS LOW. UPSTREAM RIDGE WITH LOW LEVEL/8H COLD POOL AT GREATEST EXTENT THU AM.
THURSDAY WILL BE A FEW DEGS WARMER THAN WEDNESDAY.
/ISSUED 936 PM CST TUE FEB 2 2016/ RADAR CONTINUES TO SHOW HEAVIER SHRA/TSRA DEVELOPING ALONG THE VERY SLOW MOVING COLD FRONT OVER ACADIANA INTO THE COASTAL WATERS. ISSUED A FLASH FLOOD WATCH FOR THIS AREA SOUTHEASTWARD ACROSS THE LOWER ACADIANA THROUGH 4 AM. A COLD FRONT NOW APPROACHING ACADIANA WILL MAINTAIN A FEW SHOWERS AND THUNDERSTORMS OVER THE NEXT FEW HOURS. SECONDARY SURGE OF DRIER AND COOLER AIR TO MOVE DOWN ON WEDNESDAY.
A MINOR WAVE DROPPING SOUTHEAST ON THE BACK SIDE OF THE MAIN UPPER LOW NOW OVER THE CENTRAL PLAINS MAY BRING SOME ENHANCEMENT TO SNOW SHOWERS OVER MAINLY NORTHERN AND WESTERN PARTS OF THE CWA OVERNIGHT INTO WEDS MORNING BUT NOT MUCH SNOW EXPECTED. CONTINUED COLD WEDS THEN A LITTLE WARMER THURSDAY.
MARGINAL RISK OF SEVERE THUNDERSTORMS FOR INLAND SOUTHEAST LATE EVENING SURFACE ANALYSIS DEPICTS LOW PRESSURE (995 MILLIBARS) ADVANCING NORTHEASTWARD TOWARDS LAKE MICHIGAN. WITH A TRAILING COLD FRONT EXTENDING SOUTHWARD THROUGH THE TENNESSEE AND LOWER MISSISSIPPI RIVER VALLEY. HIGH PRESSURE (1029 MILLIBARS) WAS CENTERED OVER NEW ENGLAND AND EXTENDED DOWN THE U. DEEP-LAYERED RIDGING WAS CENTERED OVER THE BAHAMAS AND THE NORTHWEST CARIBBEAN SEA. WITH LOWS ONLY FALLING TO THE LOW TO MID 60S. A COLD FRONT WILL CROSS THE WATERS ON THURSDAY AFTERNOON.
THE H5 HAND ANALYSIS PLOT SHOWS THE NORTHERN STREAM TROUGH MOVING OFF THE NORTHERN ROCKIES. THIS ENERGY HAS SEPARATED THE AMPLIFIED RIDGE THAT HAD BEEN IN PLACE THE PAST FEW DAYS BY PUSHING THE NORTHERN EXTENT TOWARD THE WESTERN GREAT LAKES. THE SPLIT FLOW PATTERN WILL BECOME A BIT MORE EVIDENT BY SATURDAY AS AN EAST PACIFIC LOW NUDGES THE SOUTHERN RIDGE EASTWARD. MID LEVEL LAPSE RATES STAY MODERATELY STEEP UNDER THE RIDGE AND IN THE TRANSITION TO SOUTHWEST FLOW. THIS LEAVES THE TERRAIN CIRCULATIONS AS THE MAIN FORCING AND WILL CONTINUE TO RUN POPS HIGHEST ON THE RIDGES THE NEXT FEW AFTERNOONS WITH ONLY VERY SMALL CHANCES OF A DECENT SHOWER REACHING THE LOWER VALLEY FLOORS.
ASSOCIATED WITH A WEAK UPPER LEVEL TROUGH. TEMPERATURES WILL BE 5-10 DEGREES WARMER TODAY. WITH LITTLE CHANGE ON SATURDAY /EXCEPT SLIGHTLY COOLER ACROSS THE NORTH/.
MID TO UPPER LEVEL TROUGH OVERHEAD TO HAVE LITTLE IMPACT ON THE SENSIBLE WEATHER WITH A VERY DRY ATMOSPHERIC COLUMN IN PLACE.
A PRE-FRONTAL TROUGH WITH A BRIEF PERIOD OF LOW LEVEL SOUTHERLY FLOW WILL COMMENCE LATE FRIDAY NIGHT OVER WESTERN NORTH DAKOTA. AHEAD OF THE PRE FRONTAL TROUGH.
VFR CONDITIONS EXPECTED WITH LIGHT SOUTH WINDS BECOMING SOUTHEAST LT 11 KNOTS LATER TODAY AS LOW PRESSURE DEVELOPS OVER THE LEE OF THE ROCKIES. AS HIGH PRESSURE SHIFTS EAST AND GULF MOISTURE RETURNS. AM EXPECTING TEMPERATURES TODAY TO BE ONLY ABOUT A DEGREE OR TWO WARMER THAN YESTERDAY. THEN ABOUT THE SAME EAST AND 1-2 DEGREE WARMER ON SATURDAY (BASED ON 850MB AND 2M TEMPERATURE FORECASTS). BUT STILL GENERALLY WEAK AS LOW PRESSURE OVER THE SOUTHERN PLAINS WILL NEED TIME TO DEEPEN.
A MODEST RIDGE EXTENDS FROM THE WESTERN GULF OF MEXICO AND ACROSS THE GULF OF MEXICO. WITH AN AREA OF LOW PRESSURE (1004 MB) JUST OFFSHORE OF THE NORTH CAROLINA TAR HEEL COAST. NORTHWEST TO NORTH WINDS OF 15 MPH OR LESS BLOWING ACROSS RELATIVE WARM WATER TEMPERATURES WILL KEEP HIGH TEMPERATURES IN THE LOWER 80S. WITH DAYTIME HEATING ON SOUTH FLORIDA LOOSENING THE PRESSURE GRADIENT AND HIGH PRESSURE REMAINING ON THE WESTERN GULF OF MEXICO.
A REINFORCING DRY COOL FRONT ASSOCIATED WITH AN AREA OF LOW PRESSURE OFF THE MID ATLANTIC COAST WILL MOVE THROUGH THE FLORIDA PENINSULA TODAY.
WEAK STORM SYSTEMS WILL BRING A SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS TO THE SIERRA NEVADA AND THE HIGHER TERRAIN OF THE SOUTHERN GREAT BASIN TODAY.
A VERY DEEP UPPER LOW OVER THE MID ATLANTIC STATES WILL PROVIDE A LATE SPRING SEASON COOL SNAP ACROSS CENTRAL ALABAMA TODAY AND TONIGHT.
OVERALL TEMPERATURES WILL BE SLIGHTLY WARMER TODAY AND AGAIN OVERNIGHT.
DRY WEATHER IS EXPECTED TODAY WITH TEMPERATURES A FEW DEGREES WARMER THAN NORMAL. AN WEAK UPPER LEVEL RIDGE WILL MOVE OVER THE REGION THIS WEEKEND BRINGING MOSTLY SUNNY SKIES AND WARMER TEMPERATURES.
1037 AM EDT FRI MAY 1 2015 HIGH PRESSURE WILL BUILD ACROSS THE AREA THROUGH THE WEEKEND.
1005 AM EDT FRI MAY 1 2015 NO CHANGES SO FAR AS HIGH PRESSURE OVER THE REGION CONTINUES TO PRODUCE LIGHT WINDS AND CLEAR SKIES. PATTERN SYNOPSIS/FORECAST: MIDNIGHT SURFACE ANALYSIS SHOWS HIGH PRESSURE FROM JAMES BAY SOUTHWEST INTO THE UPPER/MID MISSISSIPPI VALLEY. COLD FRONT STRETCHED FROM FAR NORTHWEST ONTARIO/NORTHWEST MINNESOTA/EASTERN SOUTH DAKOTA. SHORT WAVE RIDGE AXIS EXTENDS FROM EASTERN NEBRASKA NORTHEAST INTO NORTHERN ONTARIO. WHILE UPPER MIDWEST COLD FRONT WEAKENS BEFORE MOVING INTO THE UPPER LAKES TONIGHT AS SUPPORTING UPPER LEVEL ENERGY GETS SHEARED APART. BAND OF CLOUDS/SHOWERS ASSOCIATED WITH DISSIPATING COLD FRONT EXPECTED TO WEAKEN AS IT PUSHES INTO THE UPPER LAKES TONIGHT.
REGIONAL 12Z SURFACE ANALYSIS SHOWS A DRY COLD FRONT LAID ACROSS NORTH FLORIDA IN AN ARC FROM PENSACOLA TO PERRY TO JACKSONVILLE. UNDER CLEAR SKIES, TEMPERATURES WILL PEAK IN THE UPPER 70S TO AROUND 80 TODAY WITH DEW POINTS DIPPING INTO THE LOW 40S, EVEN UPPER 30S IN OUR NORTHERN ZONES. [THROUGH 12Z SATURDAY] WITH A DRY COLD FRONT PASSAGE TODAY, EXPECT UNLIMITED CIGS AND UNRESTRICTED VSBYS AND GUSTY WINDS FROM THE NORTH PEAKING AROUND 20 KNOTS AT TIMES.
A WEAK UPPER LOW WILL CONTINUE TO DIVE SOUTHEASTWARD INTO THE GULF OF MEXICO WHILE A WEAK RIDGING CONTINUES TO SET UP OVER THE LEE OF THE ROCKIES THROUGH SATURDAY.
HIGH PRESSURE SITS OFF TO OUR NORTH TODAY WITH OCCASIONALLY BREEZY NORTH WINDS ACROSS THE AREA. HIGH PRESSURE WILL KEEP SKIES MOSTLY CLEAR TODAY. 14 /ISSUED 635 AM CDT FRI MAY 1 2015/ A VERY DEEP UPPER LOW OVER THE MID ATLANTIC STATES WILL PROVIDE A LATE SPRING SEASON COOL SNAP ACROSS CENTRAL ALABAMA TODAY AND TONIGHT.
THE MARINE LAYER WILL DEEPEN TONIGHT AND SPREAD INTO THE BAY AND COASTAL VALLEYS BY SATURDAY MORNING WITH ALL AREAS SEEING MUCH COOLER TEMPERATURES SATURDAY AFTERNOON.
/ISSUED 353 AM CDT FRI MAY 1 2015/ A WEAK COLD FRONT IS EXPECTED TO SLIP INTO THE NORTHWEST CWA THIS MORNING. A WEAK UPPER AIR DISTURBANCE WILL MOVE EAST SOUTHEAST THROUGH THE RIDGE FROM SOUTHERN COLORADO INTO THE CENTRAL AND SOUTHERN HIGH PLAINS THIS AFTERNOON AND EVENING.
CURRENTLY AN UPPER LEVEL TROUGH AND SURFACE COLD FRONT IS PASSING THROUGH THE CWA. WARMER 925/850 MB TEMPS ARE LIKELY ON SATURDAY. AN AREA OF LOW PRESSURE AND COLD FRONT WILL APPROACH THE REGION DURING THE LATE AFTERNOON HOURS ON SATURDAY.
1049 AM EDT FRI MAY 1 2015 DEEP LAYER RIDGING WILL PREVAIL THROUGH MID WEEK.
ISSUED AT 330 CDT FRI MAY 1 2015 SCATTERED SHOWERS HAVE PERSISTED OVER NORTHWEST KS NEAR SE-MOVING DECELERATING SURFACE TROF. A RIDGE IS PUNCHING NE FROM AZ & NM TO LAKE SUPERIOR THEN ALMOST DUE NORTH TO HUDSON BAY WITH BY FAR THE SHARPEST AMPLITUDE EXTENDING FROM THE EASTERN DAKOTAS TO HUDSON BAY. WEAK SE LOWER DECK FLOW HAS PREVAILED ACROSS MOST OF KS WHICH HAS HELPED TO CAUSE ONLY SLIGHTLY COOLING TEMPERATURES IN THE LOWER-MID 50S.
Huber (Weekend) An upper ridge over the forecast area will begin to drift eastward this weekend. However, dry conditions will persist and afternoon highs will be in the lower 80s under mostly clear skies.
633 AM CDT FRI MAY 1 2015 06Z OBJECTIVE ANALYSIS HAS HIGH PRESSURE FROM THE GREAT LAKES INTO THE LOWER MISSISSIPPI VALLEY. QUIET AND DRY CONDITIONS WILL BE SEEN ACROSS THE AREA THIS MORNING AS HIGH PRESSURE SLOWLY DRIFTS INTO THE EASTERN GREAT LAKES.
LOWS OVERNIGHT LOOK TO DIP TO THE LOWER TO MID 50S.
1105 AM CDT FRI MAY 1 2015 MORNING SURFACE ANALYSIS PLACED A WEAK COLD FRONT JUST NORTHEAST OF THE REGION. THIS HIGH PRESSURE RIDGE WILL LINGER ALONG THE COAST THROUGH TONIGHT BEFORE MOVING OFF TO THE EAST ON SATURDAY. THERE WAS ALSO AN UPPER LEVEL LOW PRESSURE TROUGH LOCATED OVER THE COASTAL AREAS THIS MORNING.
TODAY AND TONIGHT WEATHER CONDITIONS WILL PROVIDE AN IDEAL START TO THE MONTH OF MAY AS HIGH PRESSURE TAKES CONTROL TO KICK OFF THE WEEKEND. WILL BE REACHABLE OUTSIDE OF THE SHORELINE AREAS WHICH WILL BE SUBJECTED TO COOLER LAKE BREEZE CONDITIONS. THE FRONT WILL WASH OUT BY TONIGHT BUT THE LEADING THETA-E RIDGE AND WEAK UPPER TROUGH WILL MAINTAIN JUST ENOUGH INTEGRITY TO SUPPORT CLOUDS AS THESE FEATURES DRIFT OVER THE AREA DURING SATURDAY. TEMPERATURE GUIDANCE IS A COUPLE DEGREES WARMER THAN TODAY WHICH SEEMS REASONABLE CONSIDERING THE LATE BOOST IN SURFACE HEATING THAT IS LIKELY.
1213 PM EDT FRI MAY 1 2015 HIGH PRESSURE WILL BUILD ACROSS THE AREA THROUGH THE WEEKEND.
SHORT TERM: (Through Late This Afternoon) Dry and tranquil weather is expected today as weak height rises commence aloft with the departure of the mid Atlantic upper low/trof and eastward shift in the upper ridge currently centered in the southern Rockies. Temperatures will be seasonable and forecast highs are a blend of the warmer MAV MOS and RAP 2m temps.
UPPER LOW CENTERED ACROSS NORTHWEST NORTH CAROLINA WILL CONTINUE TO MOVE AWAY FROM EAST TENNESSEE TODAY.
A SFC BOUNDARY WILL REMAIN BANKED UP ALONG THE HIGHER TERRAIN OF SE WYOMING TODAY BEFORE ERODING EASTWARD OVERNIGHT INTO SATURDAY.
REGIONAL RADAR LOOP EARLY THIS MORNING SHOWED SHOWERS AND A FEW EMBEDDED THUNDERSTORMS OCCURRING IN ASSOCIATION WITH A WEAK COLD FRONT MOVING EASTWARD ACROSS THE NORTHERN AND CENTRAL PLAINS. LOOK FOR HIGHS MOSTLY IN THE LOWER AND MID 70S BUT A FEW LOCATIONS IN WEST CENTRAL IOWA MAY ONLY REACH NEAR 70.
TEMPS TODAY WILL BE A BIT COOLER THAN NORMAL. DUE TO THE COOLER AIR MASS FILTERING FROM THE NE. ALOFT THE STRONG UPPER TROUGH HAD MOVED TO THE EAST COAST. WHILE UPPER RIDGING WAS SEEN OVER THE SOUTHERN PLAINS. THE OVERALL UPPER HIGH PRESSURE RIDGING PATTERN WILL HOLD INTO THE WEEKEND.
705 AM EDT FRI MAY 1 2015 HIGH PRESSURE OVER THE MIDWEST WILL MOVE SOUTHEAST ACROSS THE OHIO VALLEY TODAY.
910 AM PDT FRI MAY 1 2015 HIGH PRESSURE WILL LINGER TODAY AND BRING ABOVE NORMAL TEMPERATURES AND FAIR SKIES.
WEAK COLD FRONT MOVING SOUTH ACROSS NORTH-CENTRAL FL THIS MORNING. NW WINDS WILL INCREASE BEHIND WEAK COLD FRONT.
1039 AM EDT FRI MAY 1 2015 BUILDING HIGH PRESSURE WILL END SHOWERS AND INCREASE TEMPERATURES FOR THE WEEKEND. ALTHOUGH LIKELY POPS REMAIN IN THE FORECAST FOR PORTIONS OF THE RIDGES.
606 AM CDT FRI MAY 1 2015 FOR 12Z TAFS /ISSUED 521 AM CDT FRI MAY 1 2015/ SHORT TERM MODELS ARE IN AGREEMENT THAT THE CENTER OF A COLD CORE UPPER LOW WILL CONTINUE TO SHIFT SOUTHEASTWARD INTO CENTRAL NORTH CAROLINA THIS MORNING. WITH WEAK ASCENT ALONG THE TRAILING TROUGH AXIS LEADING TO AN ENHANCEMENT IN DIURNAL CUMULUS -- ESPECIALLY ACROSS THE EASTERN COUNTIES. A RIDGE CURRENTLY CENTERED ACROSS THE MID-MISSISSIPPI VALLEY WILL SLOWLY BUILD SOUTHWARD INTO THE REGION BY THIS EVENING.
THIS WEAK BOUNDARY WILL LIFT BACK NORTH SATURDAY AS THE RIDGE OF HIGH PRESSURE RESPONSIBLE FOR THE PLEASANT WEATHER MOVES ACROSS THE MS VALLEY.
HIGH PRESSURE REMAINS CENTERED OVER ARIZONA AND NEW MEXICO THIS MORNING. ENOUGH MID-LEVEL MOISTURE IS STILL LINGERING OVER THE AREA THAT AFTERNOON CONVECTIVE BUILD-UPS ARE EXPECTED ALONG THE HIGHER TERRAIN. HIGH TEMPERATURES TODAY SHOULD WARM A BIT ACROSS THE NORTH AS YESTERDAYS COLD FRONT CONTINUES TO DISSIPATE.
740 AM EDT FRI MAY 1 2015 UPPER LOW OVER THE SOUTHERN APPALACHIANS THIS MORNING WILL SLIDE OFF THE ATLANTIC COAST BY AFTERNOON. THIS LOW HAD PUSHED A FRONTAL BOUNDARY THROUGH NORTH GA AND INTO CENTRAL GA THIS MORNING. HIGH PRESSURE WILL SPREAD ACROSS THE FORECAST AREA THROUGH THE SHORT TERM. 41 ONE OF THE QUIETEST LONG TERMS ON TAP IN A LONG TIME WITH REGIME DOMINATED BY WEAK RIDGING ACROSS THE SOUTHEAST CONUS. WHILE THE UPPER RIDGE LOOKS TO DAMPEN BY THE END OF THE WEEK.
/ISSUED 418 AM CDT FRI MAY 1 2015/ MAY WILL KICK OFF ON THE WARM AND QUIET SIDE AS WEAK UPPER RIDGING HOLDS SWAY OVER THE SOUTH PLAINS TODAY. A DECENT PLUME OF MID-LEVEL MOISTURE AND WEAK EMBEDDED DISTURBANCES ROUNDING THE UPPER RIDGE WILL SUPPORT ADDITIONAL STORM DEVELOPMENT OVER THE SANGRE DE CRISTO RANGE THIS AFTERNOON. THE SOUTHERLY WINDS AND FULL INSOLATION WILL PROVIDE ANOTHER SEASONABLY MILD DAY WITH AFTERNOON HIGHS PEAKING IN THE LOWER TO MIDDLE 80S.
724 AM EDT FRI MAY 1 2015 BUILDING HIGH PRESSURE WILL END SHOWERS AND INCREASE TEMPERATURES FOR THE WEEKEND. THE UPPER LEVEL LOW CURRENTLY CENTERED OVER VIRGINIA WILL SHIFT EASTWARD TODAY AND EXPECT ANY ADDITIONAL SHOWER ACTIVITY TO BE OVER THE RIDGES WITH HIGH PRESSURE BUILDING FROM THE WEST.
A 1023 MB HIGH PRESSURE OVER WESTERN IL LATE THIS MORNING, WILL DRIFT EAST ACROSS EASTERN IL THIS AFTERNOON AND INTO THE MID MS RIVER VALLEY AND INDIANA THIS EVENING.
LOWER BASED CUMULUS CLOUDS WILL THEN BEGIN POPPING UP OVER THE HIGHER TERRAIN WITHIN THE STATE DURING THE EARLY AFTERNOON. MOST OF THE STORMS ARE NOT EXPECTED TO SURVIVE LONG AFTER DRIFTING OFF OF THE HIGHER TERRAIN.
A RIDGE OF HIGH PRESSURE WILL CAUSE FAIR WEATHER AND WELL ABOVE NORMAL DAYTIME TEMPERATURES ACROSS MOST OF NORTHERN ARIZONA TODAY. AS THE RIDGE BEGINS TO PUSH TO THE EAST OVER THE WEEKEND.
HIGH PRESSURE WILL BRING MOSTLY CLEAR SKIES THIS WEEKEND AND MAKE FOR IDEAL FLYING CONDITIONS.
927 AM EDT FRI MAY 1 2015 HIGH PRESSURE OVER THE MIDWEST WILL MOVE SOUTHEAST ACROSS THE OHIO VALLEY TODAY.
714 AM CDT Fri May 1 2015 High pressure is currently over the region bringing clear and quiet weather for the Missouri Ozarks.
THIS AFTERNOON A FEW CLOUDS FROM THE BACK SIDE OF THE LOW PRESSURE STATIONED OFF THE COAST OF NC/VA WILL MAKE IT INTO THE CWA. OCCASIONAL GUSTS UP TO 20 KTS ARE POSSIBLE ESPECIALLY IN THE HIGHER TERRAIN. VFR CONDITIONS ARE FORECAST DURING THE NEXT 24 HOURS AS HIGH PRESSURE DRIFTS SOUTHEAST INTO THE REGION LATER TONIGHT.
DECENT AMOUNT OF DRY AIR IN THE LOWER LEVELS WITH CLOUD BASES AROUND 6-10 KFT. OVERALL WARMER AIR IN PLACE BUT WITH THE CLOUD COVER EXPECTED TODAY AND POSSIBILITY OF A RAIN SHOWER HAVE KEPT TEMPS CLOSE TO SIMILAR READINGS FROM THE PAST FEW DAYS WITH HIGHS TOPPING OUT IN THE UPPER 60S TO LOWER 70S.
SOME COOL TEMPERATURES NOTED ACROSS THE REGION ON THE BACK SIDE OF THE UPPER LOW.
/ISSUED 257 AM CDT FRI MAY 1 2015/ UPPER LEVEL TROUGH ACROSS THE GREAT LAKES THIS MORNING WILL SHIFT SOUTHWARD INTO THE OHIO VALLEY THIS AFTERNOON. WITH OUR REGION BEING ON THE BACK SIDE OF THIS SYSTEM AND WITH UPPER RIDGING WELL TO OUR WEST. WEAK NORTHWEST FLOW ALOFT WILL CONTINUE ACROSS THE SOUTHERN PLAINS INTO THE LOWER MISS VALLEY. WEAK UPPER LEVEL RIDGING WILL CONTINUE TO DOMINATE TO OUR WEST THROUGH THE UPCOMING WEEKEND.
A weak cold front will bring locally breezy conditions to central and north central Washington tonight.
1246 PM EDT FRI MAY 1 2015 HIGH PRESSURE OVER THE MIDWEST WILL MOVE SOUTHEAST ACROSS THE OHIO VALLEY TODAY.
THE LOW LEVEL TROUGH WILL BE A FOCUS AND ACT ON SOME LOW STABILITY AIR WHICH MAY SET OFF A FEW LIGHT SHOWERS. SEVERAL OF THE HIGH RESOLUTION MODELS SHOW THIS AS WELL. WE HAVE HIGHS IN THE LOWER SIXTIES TO LOWER SEVENTIES ACROSS THE CWA. BUT KEEP THE NORTH SHORE COOLER THROUGH THE DAY.
EVERY DAY WAS WARMER THAN NORMAL AT THESE SITES IN APRIL.
1034 AM EDT FRI MAY 1 2015 AN UPPER LEVEL LOW PRESSURE SYSTEM MOVES OFF TO THE EAST TODAY.
710 AM EDT FRI MAY 1 2015 HIGH PRESSURE OVER THE MIDWEST WILL MOVE SOUTHEAST ACROSS THE OHIO VALLEY TODAY.
932 AM EDT FRI MAY 1 2015 PERSISTENT LOW PRESSURE SHIFTS EAST OUT OF THE CANADIAN MARITIMES TODAY.
1242 PM EDT FRI MAY 1 2015 HIGH PRESSURE WILL PROVIDE THE REGION WITH AMPLE SUNSHINE AND DRY CONDITIONS TODAY INTO THIS WEEKEND.
THE MARINE LAYER WILL DEEPEN TONIGHT AND SPREAD INTO THE BAY AND COASTAL VALLEYS BY SATURDAY MORNING WITH ALL AREAS SEEING MUCH COOLER TEMPERATURES BY SATURDAY AFTERNOON.
DRY WEATHER CONDITIONS AND UNSEASONABLY WARM TEMPERATURES WILL CONTINUE THROUGH THE REMAINDER OF THE WORK WEEK AS HIGH PRESSURE REMAINS OVER THE AREA.
419 AM EST THU FEB 25 2016 COOLER AND DRIER AIR WILL PUSH INTO THE AREA OVERNIGHT. LOW PRESSURE OVER THE NEW ENGLAND REGION WILL CONTINUE MOVING AWAY FROM THE AREA TODAY AS COOLER AND DRIER AIR OVERTAKE THE REGION.
MOSTLY CLEAR SKIES AND LIGHT WINDS COVER THE REGION THIS EVENING AS THE INFLUENCE OF THE UPPER RIDGE GROWS.
359 AM CST THU FEB 25 2016 UPPER LEVEL RIDGE TO REMAIN OVER WESTERN NORTH AMERICA THROUGH 84 HOURS. ANOTHER UPPER TROUGH OVER THE EASTERN PACIFIC WILL MOVE THROUGH THE WESTERN RIDGE AND AFFECT THE AREA SAT NIGHT. SHORT WAVE WILL SEND COOLER AIR INTO THE FAR NORTHERN RED RIVER VALLEY SAT NIGHT AND TEMPORARILY STALL. INCREASED HIGH TEMPS FOR FRI AND SAT MAINLY SOUTHERN ZONES WITH RIDGING EAST OF PACIFIC TROUGH.
PLAINS HIGH PRESSURE WILL KEEP THE WEATHER GREAT ALL WEEKEND AS IT DROPS EAST ALONG THE GULF COAST. TEMPERATURES FORECAST TO FALL INTO THE LOW TO MID 30S AREAWIDE.
COLD FRONT THAT PUSHED THROUGH THE FORECAST AREA OVERNIGHT. BOTH MODELS TRACK THE UPPER LOW JUST SOUTH OF THE OK/KS BORDER WITH PARTS OF THE AREA GETTING INTO THE WRAP AROUND REGION TUE INTO TUE NIGHT. NORTH/NW WINDS WILL BE GUSTY TODAY BUT COOLER TEMPS WILL KEEP RH'S IN THE 35 TO 40% RANGE. CONDITIONS WILL ONLY GET WORSE FOR BOTH SAT AND SUN AS RH VALUES DROP TO MORE CRITICAL LEVELS AND WINDS STAY ON THE HIGHER SIDE.
OVERNIGHT TEMPERATURES ARE DIFFICULT DUE TO UNCERTAINTY IN CLOUD COVER AND TIMING/DURATION OF CLEARING ASSOCIATED WITH RIDGE AXIS. NORTHWEST FLOW ALOFT TO BEGIN THE WEEKEND WITH A RIDGE OF WARM AIR MOVING EAST ACROSS THE NORTHERN PLAINS INTO THE UPPER MIDWEST RESULTING IN WARMER TEMPERATURES.
115 AM EST THU FEB 25 2016 A WARM FRONT HAS LIFTED NORTH OF THE REGION THIS EVENING. A COLD FRONT WILL MOVE ACROSS LATE TONIGHT AS STRONG LOW PRESSURE PASSES TO THE WEST. ANOTHER COLD FRONT WILL PASS THROUGH THURSDAY NIGHT.
1023 PM MST WED FEB 24 2016 BREEZY CONDITIONS PREVAIL TODAY IN THE WAKE OF THE COLD FRONT AND AS THE UPPER JET SLIDES JUST EAST OF OUR AREA. CHEYENNE RIDGE AND SOUTH LARAMIE RANGE. HUMIDITIES ARE IN THE LOW TO MID 20S ACROSS MUCH OF THE PLAINS WITH THE LOWEST READINGS IN THE SOUTHERN PANHANDLE WHERE WINDS ARE GUSTY AS WELL. THE UPPER LEVEL RIDGE WILL MAINTAIN HOLD OF THE REGION THROUGH THE END OF THE WEEK WITH HEIGHTS RISING OVERHEAD.
117 AM EST THU FEB 25 2016 A STRONG LOW PRESSURE SYSTEM OVER THE AREA WILL TRACK NORTHEAST THIS EVENING. COLDER AIR AND GUSTY WINDS BEHIND THE LOW WILL RESULT IN SNOW SHOWERS INTO THURSDAY NIGHT.
111 AM EST THU FEB 25 2016 A COLD FRONT WILL PUSH THROUGH THE AREA THIS EVENING AND EARLY TONIGHT.
THE TRI STATE REGION IS SEEING SUNNY CONDITIONS WITH TEMPS IN THE LOWER TO MID 50S. CONDITIONS BEGIN TO IMPROVE GOING INTO SUNSET/EVENING HRS AS UPPER TROUGH OVER THE PLAINS REGION TRENDS EASTWARD. AIDED BY UPPER FLOW REMAINING FROM THE NORTHWEST WITH UPPER RIDGE OVER THE WEST. LOOKING FOR OVERNIGHT LOWS IN THE UPPER TEENS TO THE LOWER 20S. PASSAGE OF SURFACE BOUNDARY AND SHIFTING OF UPPER TROUGH TO THE EAST WILL ALLOW FOR CAA TO WORK SOUTH ON THE NORTHERLY FLOW.
318 AM EST THU FEB 25 2016 HIGH PRESSURE BUILDS IN FOR THE END OF THE WEEK.
TEMP TIME HEIGHT PROFILES ACROSS THE PLATEAU SHOWS A STEADY TO SLIGHTLY DECREASING FREEZING LEVEL OVERNIGHT. THE WARM GROUND AND ABOVE FREEZING TEMPS MAY DELAY ANY ACCUM UNTIL AFTER THE ADVISORY STARTS. AS AN UPPER LEVEL LOW CONTINUES TO MOVE NEWD INTO THE ERN GREAT LAKES AND WITH TEMPS IN THE LOW LEVELS BNA/CKV STILL SEVERAL DEGREES ABOVE FREEZING.
A STRONG LONG WAVE RIDGE NOW OVER THE WEST COAST STATES WILL MOVE SLOWLY EAST.
ALTHOUGH WE HAVE SEEN ISOLATED INSTANCES OF FREEZING SPRINKLES/DRIZZLE THROUGH THE OVERNIGHT HOURS.
Reinforcing cold front moving into nern OK at this time will pass through all TAF sites by 10-12z.
AN UPPER LEVEL RIDGE WILL BUILD OVER THE PACIFIC NORTHWEST THROUGH THURSDAY.
A trof rotating around the back side of the departing system will help keep wrap around clouds across the area today, and a few light snow showers or flurries are possible near the Indiana border. Strong 986 mb low pressure over eastern Lake Ontario, will lift ne into the Saint Lawrence Seaway this evening, while 1031 mb high pressure over the northern high plains settles sse across the central and southern plains. Approaching high pressure ridge will weaken brisk nw winds today to between 5 and 10 mph during overnight. This should also decrease the low clouds from the sw during tonight as skies become partly cloudy. Cooler lows tonight in the low to mid 20s which is pretty close to normals for late February.
FOR NOW MOST OF THIS APPEARS TO BE VERY VERY FINE FLURRIES/SNOW GRAINS BUT MUST COVER FOR PATCHY FREEZING DRIZZLE AS WELL. DECENT SUBSIDENCE WITH THE INCOMING HIGH PRESSURE SHOULD HELP CLEAR SKIES FAIRLY WELL BEFORE THE LOW LEVEL FLOW DIES. TEMPERATURES SHOULD DIP INTO THE LOWER 20S LATE TONIGHT.
417 AM EST THU FEB 25 2016 STRONG NORTHWEST FLOW WILL BE FOUND OVER THE OHIO VALLEY AS LOW PRESSURE EJECTS NORTHEAST AND AWAY FROM THE REGION TODAY.
339 AM EST THU FEB 25 2016 SMALL STREAMS AND CREEKS WILL REMAIN ELEVATED ACROSS THE LOWER SUSQUEHANNA VALLEY TODAY.
1019 PM MST WED FEB 24 2016 WINDS CONTINUE TO DIMINISH ACROSS THE AREA AS SURFACE PRESSURE GRADIENT RELAXES WITH HIGH PRESSURE SETTLING IN. UPPER RIDGE SLOWLY SHIFTS INTO THE NORTHERN PLAINS OVER THE NEXT SEVERAL DAYS. STRONG UPPER RIDGING WILL BUILD INTO THE REGION TONIGHT AND REMAIN THROUGH THURSDAY.
325 AM CST THU FEB 25 2016 THE EASTERN HALF OF THE CONUS WILL REMAIN UNDER A FAIRLY BROAD LONGWAVE TROUGH THROUGH THE START OF THE WEEKEND.
THE HIGHER ELEVATIONS WILL SEE AREAS OF AND UP TO 1/2 INCH ON LOOKOUT MOUNTAIN RIDGE. STRONG UPPER LOW WILL MOVE OVERHEAD TONIGHT. AT THE HIGHEST ELEVATIONS ACROSS NORTHEAST GA.
As of 05Z, An upper level ridge sits above the western United States with a large upper level low over the Great Lakes. A weakening upper level low is sinking southward from the northern Plains and should weaken into an open wave and move through Nebraska by late this morning. Towards the surface, the cold front that moved through the area Wednesday afternoon continues to move south into the Southern Plains with a dome of high pressure building into western Kansas. The dome of high pressure will continue to build into the area today then slip south of the area tonight.
WITH A WARMUP INTO THE LOW TO MID 50S EXPECTED TOMORROW.
WATER VAPOR SATELLITE TRENDS THIS EVENING PLACE AN UPPER LEVEL LOW OVER THE OHIO VALLEY AND A LARGE UPPER LEVEL TROUGH ROTATING THROUGH THE LOWER MISSISSIPPI VALLEY. /ISSUED 311 PM CST WED FEB 24 2016/ 21Z SURFACE MAP SHOWED A 987MB LOW PRESSURE CENTERED OVER OHIO. AS ITS PARENT UPPER LOW LIFTS INTO THE EASTERN GREAT LAKES.
CHANGING TO ALL SNOW IN THE RIDGES EARLY MORNING. BETTER ACCUMULATIONS IN THE RIDGES AND INTO EASTERN OHIO AND PORTIONS OF I-80 IN NW PA ESPECIALLY AS THE AFTERNOON PROGRESSES. WITH 3-6 IN THE HIGHER RIDGES.
251 AM CST THU FEB 25 2016 UPPER LOW FINALLY EXITS THE AREA TODAY AND MARKS THE START OF A MULTI-DAY RAIN FREE PERIOD THROUGH THE WEEKEND.