Aikyam-Lab/Synoptic-Bench huggingface dataset:
CLIPPER RELATED COLD FRONT APPEARS TO BE GOING THROUGH THE WESTERN ZONES AT THIS TIME WITH WINDS AT LIVINGSTON SWITCHING OVER TO THE NORTHWEST LAST HOUR. AND WITH PASSAGE OF COLD FRONT THE PRESSURE GRADIENT WILL NO LONGER BE FAVORABLE FOR STRONGER WIND GUSTS TONIGHT. PRECIPITATION IS FIGHTING DOWNSLOPE FLOW SO WILL BE DIFFICULT TO MEASURE ANY PRECIPITATION AT THE LOWER ELEVATIONS. FAST MOVING UPPER LEVEL DISTURBANCE WILL PUSH A COLD FRONT THROUGH THE AREA TONIGHT. STILL TIME TO REACH ADVISORY LEVELS AHEAD OF THIS EVENINGS COLD FRONT THOUGH. BEHIND THE COLD FRONT THURSDAY LOOKS DRY AND WINDY WITH TEMPERATURES 5 TO 10 DEGREES COOLER THAN TODAY.
356 PM MST WED NOV 11 2015 WINDS HAVE DIMINISHED BELOW CRITERIA SO CANCELLED THE HIGH WIND WARNING. HIGH TEMPERATURES WILL RANGE FROM THE MIDDLE 40S IN NORTHEAST COLORADO TO THE LOWER 50S IN NORTH CENTRAL KANSAS.
1005 PM EST WED NOV 11 2015 HIGH PRESSURE OVER THE REGION WILL MOVE SOUTH OVERNIGHT. A DRY COLD FRONT WITH LIMITED MOISTURE WILL CROSS THE AREA LATE THURSDAY AFTERNOON.
A COLD FRONT WILL MOVE THROUGH THE AREA EARLY THURSDAY.
COLD FRONT ON SCHEDULE TO MOVE THROUGH THE MARINE AREAS LATE TONIGHT AND EARLY THURSDAY MORNING.
616 PM CST WED NOV 11 2015 GUSTY NORTHWEST WINDS WILL SUBSIDE THIS EVENING AS THE STRONG LOW PRESSURE CONTINUES TO MOVE AWAY FROM OKLAHOMA. /ISSUED 316 PM CST WED NOV 11 2015/ SOME RECOVERY IN RELATIVE HUMIDITY HAS OCCURRED THIS AFTERNOON ACROSS NORTHERN OKLAHOMA BEHIND A COLD FRONT. NEAR FREEZING TEMPERATURES ARE POSSIBLE ACROSS FAR NORTHWEST OKLAHOMA BY EARLY THURSDAY MORNING.
SURFACE ANALYSIS SHOWS THE PRE-FRONTAL TROUGH JUST WEST OF ALICE TO BEEVILLE WITH DEWPOINT TEMPS IN THE MID TO UPPER 70S OVER THE COASTAL PLAINS. COLD FRONT ON SCHEDULE TO MOVE THROUGH THE MARINE AREAS LATE TONIGHT AND EARLY THURSDAY MORNING.
DRY AND WARMER WEATHER IS EXPECTED FOR THE REST OF THIS WEEK AND INTO THE COMING WEEKEND.
938 PM EST WED NOV 11 2015 A WEAK RIDGE OF HIGH PRESSURE WILL BUILD OVER THE REGION TONIGHT AND WILL SHIFT OFFSHORE ON THURSDAY AS A WARM FRONT APPROACHES FROM THE SOUTHWEST. A COLD FRONT WILL PUSH EAST THROUGH THE AREA THURSDAY NIGHT.
COLD FRONT WILL MOVE SOUTH ACROSS THE REGION TONIGHT.
A STRONG CAP AND BROAD RIDGING REMAINS OVER SOUTH TEXAS WHICH HAS LED TO LIMITED ACTIVITY OCCURRING TODAY. THINGS ARE EXPECTED TO CHANGE AS A MIDLEVEL TROUGH/LOW LIFTS TO THE NORTHEAST THROUGH THE CENTRAL PLAINS. THE ASSOCIATED SURFACE COLD FRONT. A MORE NORTHERLY FLOW IS DEVELOPING ACROSS THE WESTERN BRUSH COUNTRY AS THE PREFRONTAL TROUGH SLOWLY SLIDES EAST ACROSS THE REGION. WITH COOLER TEMPS FOR THURSDAY NIGHT.
620 PM EST WED NOV 11 2015 A WEAK RIDGE OF HIGH PRESSURE WILL BUILD OVER THE REGION TONIGHT AND WILL SHIFT OFFSHORE ON THURSDAY AS A WARM FRONT APPROACHES FROM THE SOUTHWEST. A COLD FRONT WILL PUSH EAST THROUGH THE AREA THURSDAY NIGHT.
528 PM CST WED NOV 11 2015 Powerful, deep low pressure system currently centered in the vicinity of the IA/NE/MO borders has dropped down to around 989/990mb as of the last hour. Behind a fropa roaring through, this dynamic system is ushering in much drier air (dewpoints have been crashing across eastern KS and into far western MO) and eventually the chillier air from the north as the cold front makes its way through. Across northern MO tonight, where dewpoint depressions are much closer together and better atmospheric moisture is available, could see a few showers streaking through on the backside of the low but these should be relatively light in nature and not widespread. Once the high traverses into the eastern U.
WIND IN CENTRAL AND NORTH CENTRAL NEBRASKA WAS LOWER THAN THE HIGH WIND CRITERIA. SO WE HAVE CANCELED THE HIGH WIND WARNING.
804 PM EST WED NOV 11 2015 HIGH PRESSURE OVER THE REGION BOTH AT THE SURFACE AND ALOFT ARE KEEPING SKIES MOSTLY CLEAR WITH LIGHT WINDS EXPECTED TO CONTINUE OVERNIGHT. IN THE WAKE OF THE RECENT COLD FRONT.
734 PM EST WED NOV 11 2015 HIGH PRESSURE WILL CROSS THE REGION OVERNIGHT THROUGH EARLY THURSDAY. LOW PRESSURE WILL APPROACH FROM THE WEST THURSDAY NIGHT.
909 PM EST SAT JAN 23 2016 LOW PRESSURE WAS LOCATED OFF THE MIDDLE ATLANTIC COAST LATE THIS AFTERNOON AND WILL CONTINUE TO DRIFT SLOWLY EASTWARD.
FREEZING TEMPERATURES AND LOW WIND CHILLS EXPECTED LATE TONIGHT HIGH PRESSURE CONTINUES TO BUILD INTO THE SOUTHEASTERN U. EXPECT FREEZING TEMPERATURES. THOSE ALONG THE NATURE COAST AND INLAND PORTIONS OF NORTHERN AND CENTRAL FLORIDA SHOULD TAKE STEPS TO PROTECT SENSITIVE PLANTS FROM FREEZING TEMPERATURES. AS PRESSURE GRADIENT GRADUALLY WEAKENS WITH HIGH PRESSURE MOVING IN.
HIGH PRESSURE ALOFT WILL MOVE OVER THE REGION OVERNIGHT FOR A DIMINISHING THREAT OF SHOWERS.
402 PM CST SAT JAN 23 2016 TEMPERATURES HAVE WARMED TO THE LOW TO MID 60S ACROSS THE CENTRAL AND WESTERN PORTIONS OF THE AREA THIS AFTERNOON. MUCH COOLER TEMPERATURES IN THE 40S AND 50S WERE PRESENT WERE STRATUS LINGERED THE LONGEST THIS MORNING AND LOW LEVEL WINDS WERE MORE SOUTHEASTERLY. BROAD RIDGING IS PRESENT ACROSS THE CENTRAL CONUS. A TROUGH HAS MOVED ONSHORE TO OUR WEST AND WILL PROGRESS EASTWARD TOWARD THE AREA TOMORROW. A COLD FRONT WILL MOVE SOUTHWARD DURING THE EVENING. LIGHT PRECIPITATION IS POSSIBLE IN THE NORTHWEST DURING THE EVENING AND OVERNIGHT WHERE DEEPEST SATURATION OCCURS BEFORE THE TROUGH MOVES EAST. IN THE WAKE OF THIS TROUGH.
IN AGREEMENT WITH LMK THAT THERE IS A POSSIBLITY FOR SOME PATCHY FREEZING FOG ESPECIALLY ACROSS UPPER CUMBERLAND REGION FROM MID EVENING HRS THRU MID MORNING HRS ON SUN. UNDER COLD HIGH PRESSURE.
524 PM EST SAT JAN 23 2016 HIGH PRESSURE WILL REMAIN ANCHORED ACROSS NORTHERN NEW ENGLAND THROUGH THE REST OF THIS WEEKEND AS A STRONG STORM SYSTEM PASSES SOUTH OF THE REGION. A WEAK TROUGH WILL MOVE INTO THE REGION SUNDAY NIGHT WITH A FEW SNOW SHOWERS EXPECTED IN THE MOUNTAINS.
PATCHY FREEZING FOG FORMING W OF PLATEAU REGION IN A FEW LOW LYING SELECTED LOCATIONS. ALSO TWEAKED SKY CONDITIONS ON SUN TO MAKE ALL AREAS PTCLDY AS CONTINUED PASSAGES OF SCT/BKN CI OVER TOP OF UPPER LEVEL RIDGING INFLUENCES CONTINUE TO OCCUR. UNDER COLD HIGH PRESSURE.
603 PM EST SAT JAN 23 2016 HIGH PRESSURE WILL BUILD OVER THE REGION TONIGHT AND SUNDAY.
1021 PM EST SAT JAN 23 2016 HIGH PRESSURE WILL REMAIN ANCHORED ACROSS NORTHERN NEW ENGLAND THROUGH THE REST OF THIS WEEKEND AS A STRONG STORM SYSTEM PASSES SOUTH OF THE REGION. A WEAK TROUGH WILL MOVE INTO THE REGION SUNDAY NIGHT WITH A FEW SNOW SHOWERS EXPECTED IN THE MOUNTAINS.
/ISSUED 322 PM CST SAT JAN 23 2016/ Surface analysis this afternoon shows developing lee trough which has resulted in light south winds. which have aided in scouring out the low clouds we started the day with.
632 PM EST SAT JAN 23 2016 HIGH PRESSURE WILL REMAIN IN CONTROL FOR THE REMAINDER OF THE WEEKEND, CONTINUING THE CURRENT BENIGN CONDITIONS.
629 PM EST SAT JAN 23 2016 VIGOROUS UPPER LOW CONTINUES TO CHURN ACROSS THE MID-ATLANTIC SEABOARD WITH EASTERN KENTUCKY ON THE FAR WESTERN EXTENT OF THE VAST PRECIPITATION SHIELD. SURFACE RIDGING WILL BUILD IN OUT OF THE TENNESSEE VALLEY TONIGHT THUS PROVIDING DEEP LAYER SUBSIDENCE IN COMBINATION WITH THE APPROACH OF UPPER RIDGING. WARMER AIR WILL FILTER IN ALOFT LATER TONIGHT INTO TOMORROW. BUT TEMPERATURES WILL LIKELY STRUGGLE TO SURPASS THE FREEZING MARK DUE TO THE SNOWPACK. CENTER OF UPPER RIDGING WILL THEN SLIDE ACROSS THE REGION SUNDAY NIGHT AS SOUTH/SOUTHWESTERLY FLOW AND WARMING TEMPERATURES SET UP FOR THE FINAL WEEK IN JANUARY.
TEMPERATURES ARE IN THE LOWER TO MID 60S. IN THE LOW LEVELS OF THE ATMOSPHERE. AN AREA OF HIGH PRESSURE OVER THE SOUTHEASTERN UNITED STATES WILL BUILD SOUTHEASTWARD ACROSS SOUTH FLORIDA OVERNIGHT. A TROUGH OF LOW PRESSURE WILL PROGRESS EASTWARD OVER THE FLORIDA PENINSULA TONIGHT.
630 PM EST SAT JAN 23 2016 A WINTER WEATHER ADVISORY HAS BEEN ISSUED FOR FAR NORTH GEORGIA ESPECIALLY IN THE HIGHER ELEVATIONS WHERE THE GREATER AMOUNTS OF SNOW AND ICE OCCURRED AND TEMPERATURES HAVE REMAINED BELOW FREEZING.
THESE HIGHS ARE SOME 15 DEGREES BELOW NORMAL AND THE MOSTLY CLEAR SKIES AND RELATIVELY LIGHT WINDS TONIGHT SHOULD SET THE STAGE FOR WIDESPREAD LOWS IN THE LOW TO MID 20S.
AHEAD OF THE NEXT UPPER LEVEL LOW PRESSURE TROUGH. AND INTO THE 30S AND 40S FOR THE HIGHER ELEVATIONS. THE UPPER TROUGH AXIS SLIDES EAST INTO THE GREAT BASIN TONIGHT. THE TROUGH AXIS CONTINUES EAST AND CROSSES INTO COLORADO TOMORROW MORNING. LOOKS LIKE THE HIGHER ELEVATIONS OF LAKE COUNTY WILL SEE THE HIGHEST AMOUNTS.
LEADING TO DRIZZLE/FREEZING DRIZZLE IF PRECIPITATION WOULD BE PRODUCED.
WILL ALSO BE ASSESSING THE POTENTIAL FOR FREEZING FOG LATER TONIGHT. VIGOROUS UPPER LOW CONTINUES TO CHURN ACROSS THE MID-ATLANTIC SEABOARD WITH EASTERN KENTUCKY ON THE FAR WESTERN EXTENT OF THE VAST PRECIPITATION SHIELD. SURFACE RIDGING WILL BUILD IN OUT OF THE TENNESSEE VALLEY TONIGHT THUS PROVIDING DEEP LAYER SUBSIDENCE IN COMBINATION WITH THE APPROACH OF UPPER RIDGING. WARMER AIR WILL FILTER IN ALOFT LATER TONIGHT INTO TOMORROW. BUT TEMPERATURES WILL LIKELY STRUGGLE TO SURPASS THE FREEZING MARK DUE TO THE SNOWPACK. CENTER OF UPPER RIDGING WILL THEN SLIDE ACROSS THE REGION SUNDAY NIGHT AS SOUTH/SOUTHWESTERLY FLOW AND WARMING TEMPERATURES SET UP FOR THE FINAL WEEK IN JANUARY.
AN ADDITIONAL ONE HALF TO ONE INCH OF SNOW STILL POSSIBLE ACROSS THE HIGHEST PEAKS. CHATTANOOGA AIRPORT, TN 20 45 29 54 / 10 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 16 39 25 50 / 10 0 0 0 OAK RIDGE, TN 16 39 25 50 / 10 0 0 0 TRI CITIES AIRPORT, TN 13 35 18 46 / 10 0 0 10 TN.
RAIN AND SNOW EARLY THIS EVENING AS A WEAK COLD FRONT PASSES NORTHWEST TO SOUTHEAST ACROSS THE GREAT BASIN. COOLER TEMPERATURES OVERNIGHT WITH ALL REMAINING PRECIPITATION FALLING AS SNOW.
SHOWERS ASSOCIATED WITH AN UPPER TROUGH WILL CONTINUE ACROSS SE OREGON AND SW IDAHO TONIGHT THROUGH SUNDAY MORNING. SHOWERS WILL DECREASE IN THE AFTERNOON AS THE TROUGH MOVES TO OUR EAST.
847 PM CST SAT JAN 23 2016 HIGH PRESSURE HAS ALLOWED FOR CLEAR SKIES AND VERY COLD TEMPERATURES TODAY AND SO ON INTO TONIGHT. ESPECIALLY AT GLH/GWO WHERE CROSSOVER TEMPS ARE WARMER AND CURRENT TEMP/DEWPOINT SPREADS SMALLER. THESE HIGHS ARE SOME 15 DEGREES BELOW NORMAL AND THE MOSTLY CLEAR SKIES AND RELATIVELY LIGHT WINDS TONIGHT SHOULD SET THE STAGE FOR WIDESPREAD LOWS IN THE LOW TO MID 20S.
925 PM EST SAT JAN 23 2016 WINDS ARE DECREASING MUCH QUICKER THAN PREVIOUSLY THOUGHT AND POCKETS OF BELOW FREEZING TEMPS HAVE ALREADY DEVELOPED ACROSS PORTIONS OF INLAND SE GA AND INLD NE FL. HAVE EXPANDED MARION/PUTNAM COUNTIES INTO THE HARD FREEZE AS TEMPS AT PALATKA/GAINESVILLE HAVE ALSO FALLEN TO FREEZING ALREADY.
DESPITE LACK OF RADIATIONAL EFFECTS TEMPS STILL LOOK FREEZING TO JUST BELOW IN MANY SPOTS ALONG AND WEST OF THE I-4 CORRIDOR AND OUTSIDE THE URBANIZED AREAS OF ORANGE COUNTY.
711 PM EST SAT JAN 23 2016 HIGH PRESSURE WILL REMAIN IN CONTROL FOR THE REMAINDER OF THE WEEKEND, CONTINUING THE CURRENT BENIGN CONDITIONS.
605 PM EST SAT JAN 23 2016 LOW PRESSURE WAS LOCATED OFF THE MIDDLE ATLANTIC COAST LATE THIS AFTERNOON AND WILL CONTINUE TO DRIFT SLOWLY EASTWARD.
a ridge axis continues to slide off to the east as pressures slowly fall on the lee side of the Rockies. /ISSUED 322 PM CST SAT JAN 23 2016/ Surface analysis this afternoon shows developing lee trough which has resulted in light south winds. which have aided in scouring out the low clouds we started the day with.
918 PM CST SAT JAN 23 2016 LOW CLOUDS MOVING SOUTH ALONG A COLD FRONT IN ND WILL ENCOMPASS ALL OF THE REGION BY MORNING AS WINDS BECOME NORTH.
COLD FRONT HAS PUSHED THROUGH GRAND FORKS AND NW SFC WINDS EXTENDING FROM DEVILS LAKE BASIN THROUGH THE NORTHERN VALLEY AND INTO SOUTHERN LAKE OF THE WINDS COUNTY. HAVE UPDATED TEMP CURVE TO REFLECT A BIT WARMER LATE EVENING TEMPS. THE SUN AND WARMER TEMPS WILL BE SHORT LIVED AS THE WINDS ARE ALREADY SWITCHING TO THE NORTHWEST ACROSS NORTHWEST ND.
COLD FRONT AND ASSOCIATED LOWER STRATUS IS DROPPING SOUTHEAST ACROSS THE FORECAST AREA. STRONG PRESSURE RISES BEHIND THE COLD FRONT. COOLER TEMPERATURES AND LIGHT SNOW ON SUNDAY BEHIND A COLD FRONT HIGHLIGHT THE SHORT TERM FORECAST. THE SURFACE COLD FRONT ACROSS SOUTHERN CANADA WAS JUST ENTERING NORTHWEST NORTH DAKOTA. A COOLER POST FRONTAL SUNDAY IS EXPECTED AREA WIDE WITH HIGHS GENERALLY IN THE 20S.
941 PM EST SAT JAN 23 2016 HIGH PRESSURE WILL REMAIN IN CONTROL FOR THE REMAINDER OF THE WEEKEND, CONTINUING THE CURRENT BENIGN CONDITIONS.
616 PM CST SAT JAN 23 2016 A WEAK PACIFIC COLD FRONT CROSSED THE AREA THIS MORNING. AS SOME BREAKS IN THE HIGH OVERCAST AND LIGHT WEST WINDS WILL ALLOW TEMPERATURES TO DROP. THE NAM MODEL HINTING AT A WEAK BACKDOOR COLD FRONT PUSHING TO NEAR A VALENTINE TO BROKEN BOW LINE DURING THE AFTERNOON. NAM HAS COME IN MORE AGGRESSIVE WITH CLOSING UPPER LOW OFF OVER CENTRAL AND EASTERN NEBRASKA WITH AN ENHANCED BAND OF PRECIPITATION IN THE DEFORMATION ZONE.
RESULTING IN CLEAR SKIES AND PLENTY OF RADIATIONAL COOLING AS HIGH PRESSURE BUILDS INTO THE AREA ON THE BACKSIDE OF THE TROUGH EXITING INTO THE MID ATLANTIC. TEMPERATURES TONIGHT WILL BE IN THE LOW TO MID 20S WITH A FEW COOLER SPOTS IN THE TEENS ACROSS THE NORTH. THERE WILL BE PLENTY OF SUN AND LIGHT WINDS ON SUNDAY AS HIGH PRESSURE SLOWLY SLIDES EAST LATE AFTERNOON AND INTO THE EVENING.
617 PM EST SAT JAN 23 2016 THE VERY GRADUAL EROSION OF THE LOW CLOUD DECK THIS AFTERNOON ALLOWED ALL TERMINALS TO CLEAR WITH THE EXCEPTION OF FNT. THE LOW LEVEL WIND FIELD WILL BACK TOWARD THE WEST THIS EVENING. THIS WILL INHIBIT THE LOW CLOUD DECK WHICH NOW BLANKETS LAKE HURON AND THE THUMB FROM ADVANCING BACK INTO THE TERMINALS. GIVEN THE DEPTH OF THE LOW LEVEL INVERSION. PERHAPS PUNCTUATED BY PATCHY LIGHT FREEZING DRIZZLE. TEMPERATURES WILL MODERATE INTO THE LOWER 30S ON SUNDAY AFTER ANOTHER CHILLY NIGHT IN THE TEENS TONIGHT. WITH A SLIGHT SHIFT NORTH AND NORTHWEST WITH THE MAIN LOW PRESSURE SYSTEM THAT DEVELOPS IN RESPONSE TO THE AMPLIFYING UPPER SYSTEM AS IT LIFTS INTO THE UPPER MIDWEST AND WESTERN/NORTHWEST GREAT LAKES.
501 PM MST SAT JAN 23 2016 THE NEXT TROUGH WAS ONSHORE THIS AFTERNOON AND WILL TRACK W-E ACROSS THE REGION ON SUNDAY. THE COLD FRONT SHIFTS AND WEAKENS INTO THE EASTERN FORECAST AREA THROUGH THE DAY SO THE CENTRAL CO MTN ADVISORIES BEGIN AT NOON. OTHER ZONES THAT MAY GET CLOSE TO ADVISORY SNOW CRITERIA INCLUDE THE EASTERN UTAH MTNS AND THE LOWER YAMPA RIVER BASIN.
A RIDGE OF HIGH PRESSURE WILL BRING DRY CONDITIONS THROUGH MUCH OF THE WEEK BEFORE CHANCES FOR RAIN AND SNOW RETURN THE END OF THE WEEK INTO THE WEEKEND. THERE ARE SHOWERS LINGERING IN THE SIERRA AS THE UNSTABLE TROUGH AXIS SHIFTS ACROSS CA/NV THIS AFTERNOON, BUT ROAD TEMPERATURES ARE WARM ENOUGH THAT LITTLE IF ANY SNOW IS STICKING.
SHOWERS DIMINISH BUT REMAIN IN THE COLD AIR MASS ALOFT EVEN WITH THE WEAK RIDGING. A STRONGER UPPER RIDGE BUILDS WITH ANOTHER SYSTEM SLIDING DOWN THE BACKSIDE OF IT THROUGH THE AREA SUNDAY AFTERNOON INTO SUNDAY NIGHT.
THOSE TWO FACTORS WILL RESULT IN COOLER TEMPERATURES.
917 PM CST SAT JAN 23 2016 HIGH PRESSURE HAS SETTLED OVER THE MIDSOUTH THIS EVENING. PLACING WINDCHILL VALUES AT OR BELOW FREEZING AREAWIDE.
727 PM EST SAT JAN 23 2016 HIGH PRESSURE WILL BRING DRY WEATHER THROUGH EARLY IN THE WEEK. BUILDING HIGH PRESSURE SHOULD BRING DRY WEATHER TONIGHT. HIGH PRESSURE SHOULD CONTINUE THE DRY WEATHER THRU SUN NGT.
SOUTHEAST WINDS WILL BRING IN SLIGHTLY HIGHER MOISTURE WITH DEWPOINT TEMPS IN THE LOWER 40S INTO THE SOUTHERN COASTAL BEND AT THIS TIME. SOUTHERLY LOW LEVEL FLOW WILL INCREASE ON SUNDAY AS LOW PRESSURE DEEPENS OVER THE SOUTHERN HIGH PLAINS. BASICALLY A TEMPERATURE FORECAST WITH WARMER TEMPERATURES THROUGH THE THREE PERIODS. WARMER TEMPERATURES TONIGHT DUE TO WINDS BECOME MORE SOUTH. THEN WARMER SUNDAY NIGHT WITH HIGHER WINDS AND SOME CLOUDS. GENERALLY WILL LEAN MORE TOWARD THE COOLER SIDE OF GUIDANCE AWAY FROM THE COASTAL AREAS. BUT THEN GO WARMER OR ON THE WARM SIDE FOR SUNDAY AND SUNDAY NIGHT. UPPER TROUGH APPROACHES AREA SUNDAY NIGHT AND DOES PROVIDE SOME ENERGY. BUT AT THIS TIME IT LOOKS AS THOUGH MOISTURE WILL BE TOO LIMITED FOR RAINFALL (EVEN ISENTROPIC FORECASTS HAVE HIGH PRESSURE DEFICITS).
1020 PM EST SAT JAN 23 2016 DEEP LOW PRESSURE WILL DRIFT EAST FROM THE MOUTH OF THE CHESAPEAKE BAY OVERNIGHT. HIGH PRESSURE WILL RETURN EARLY IN THE NEW WEEK.
715 PM EST SAT JAN 23 2016 HIGH PRESSURE WILL REMAIN OVER THE GREAT LAKES AND OHIO VALLEY AREA TONIGHT AS THE EAST COAST BLIZZARD CONTINUES. HIGHS ON SUNDAY WILL BE IN THE LOWER TO MIDDLE 30S. UPSTREAM AIRCRAFT SOUNDINGS OVER SOUTHEAST LOWER MICHIGAN INDICATED A SUBSTANTIAL DRYING OUT OF THE LOWER LAYERS. TEMPERATURES SHOULD BE A LITTLE WARMER WITH HIGHS NEAR 35 AS WARM AIR ADVECTION INCREASES AHEAD OF THE NEXT SYSTEM. MID LEVEL SHORT WAVE RIDGE TO PASS ACROSS THE REGION SUNDAY NIGHT WHILE LOW LEVEL WARM AIR ADVECTION DEVELOPS ALONG WITH INCREASING SFC GRADIENT.
AS HIGH PRESSURE MOVING EAST BEGINS TO INTERACT MORE INTENSELY WITH A LOW PRESSURE SYSTEM IN THE CENTRAL PLAINS. HIGH PRESSURE SHIFTS EAST AS WELL WITH A RELAX PRESSURE GRADIENT IN CONTROL KEEPING LIGHTER WINDS THROUGH THE DAY. SOUTHEAST FLOW IN THE LOWER LEVEL WILL GRADUALLY BRING GULF MOIST AIR INLAND INCREASING RH VALUES IN THE 30 TO 40 PERCENT RANGE. DUE TO ABUNDANT DAYTIME HEATING WITH WAA INTO THE AREA TEMPERATURES WILL WARM UP INTO THE LOW TO MID 70S ACROSS THE AREA.
936 PM EST SAT JAN 23 2016 HIGH PRESSURE WILL BRING DRY WEATHER THROUGH EARLY IN THE WEEK. BUILDING HIGH PRESSURE SHOULD BRING DRY WEATHER TONIGHT. HIGH PRESSURE SHOULD CONTINUE THE DRY WEATHER THRU SUN NGT.
ISSUED 617 PM EST SAT JAN 23 2016 THE VERY GRADUAL EROSION OF THE LOW CLOUD DECK THIS AFTERNOON ALLOWED ALL TERMINALS TO CLEAR WITH THE EXCEPTION OF FNT. THE LOW LEVEL WIND FIELD WILL BACK TOWARD THE WEST THIS EVENING. THIS WILL INHIBIT THE LOW CLOUD DECK WHICH NOW BLANKETS LAKE HURON AND THE THUMB FROM ADVANCING BACK INTO THE TERMINALS. GIVEN THE DEPTH OF THE LOW LEVEL INVERSION. PERHAPS PUNCTUATED BY PATCHY LIGHT FREEZING DRIZZLE. TEMPERATURES WILL MODERATE INTO THE LOWER 30S ON SUNDAY AFTER ANOTHER CHILLY NIGHT IN THE TEENS TONIGHT. WITH A SLIGHT SHIFT NORTH AND NORTHWEST WITH THE MAIN LOW PRESSURE SYSTEM THAT DEVELOPS IN RESPONSE TO THE AMPLIFYING UPPER SYSTEM AS IT LIFTS INTO THE UPPER MIDWEST AND WESTERN/NORTHWEST GREAT LAKES.
THE PRESSURE GRADIENT WILL RELAX AS HIGH PRESSURE BUILDS IN FROM THE WEST. THE SUBSIDING WINDS AND TEMPS BELOW FREEZING WILL ALLOW FOR SOME PATCHY FROST FORMATION TOWARDS MORNING MAINLY IN WIND PROTECTED AREAS. HIGH PRESSURE BUILDS OVERTOP OF THE REGION AND WILL SEE SUNNY SKIES AND WIND SPEEDS LESS THAN 10 MPH THROUGH THE DAY. MUCH COOLER THAN NORMAL TEMPS WILL PREVAIL WITH MAX TEMPS TOPPING OUT IN THE LOWER 50S IN MOST LOCATIONS.
HAVE UPDATED TEMP CURVE TO REFLECT A BIT WARMER LATE EVENING TEMPS. THE SUN AND WARMER TEMPS WILL BE SHORT LIVED AS THE WINDS ARE ALREADY SWITCHING TO THE NORTHWEST ACROSS NORTHWEST ND.
602 PM EST SAT JAN 23 2016 LOW PRESSURE WAS LOCATED OFF THE MIDDLE ATLANTIC COAST LATE THIS AFTERNOON AND WILL CONTINUE TO DRIFT SLOWLY EASTWARD.
244 PM EDT THU SEP 10 2015 A STATIONARY FRONT REMAINS OVER THE REGION THIS AFTERNOON AS A WAVE OF LOW PRESSURE APPROACHES ALONG IT FROM THE SOUTH. THE LOW MOVES SOUTHEAST OF LONG ISLAND TONIGHT AND EXITS NORTHEAST OF THE REGION FRIDAY ALONG WITH THE FRONT. WEAK HIGH PRESSURE BUILDS IN FRIDAY NIGHT.
MOST IF NOT ALL OF THE PRECIP SHOULD BE SOUTH OF THE AREA BY 06Z WITH COOL CANADIAN HIGH PRESSURE BUILDING IN.
THE UPPER RIDGE OVER THE WEST WILL HOLD THRU FRI BEFORE FLATTENING TO NW FLOW ON SAT. A STRONG UPPER TROF MOVES INTO THE PAC NW. THE FIRST UPPER TROF MOVES TO THE EAST LATER ON TUE. A BROAD LONG WAVE TROF SETS OFF OVER THE WEST AND MAINTAINS LOW PRECIP CHANCES THRU FRI AS MINOR WAVES MOVE THRU. THEN TURN COOLER FOR THE REST OF THE WEEK. HIGH PRESSURE WILL BRING VFR CONDITIONS THROUGH FRIDAY WITH MAINLY CLEAR SKIES AND LIGHT WINDS WITH SOME 10 KNOT UP VALLEY WINDS POSSIBLE IN THE AFTERNOON AT IDA AND PIH.
318 PM CDT THU SEP 10 2015 CANADIAN HIGH PRESSURE WILL SETTLE IN OVER THE REGION TONIGHT BRINGING LIGHT WINDS AND CHILLY TEMPERATURES.
415 PM CDT THU SEP 10 2015 COLD FRONT STILL ON TRACK TO BRING INCREASED THUNDERSTORM CHANCES AND MUCH COOLER TEMPERATURES TO THE PANHANDLES OVER THE NEXT 24 HOURS. AFTERNOON WATER VAPOR IMAGERY SHOWED NORTHWEST FLOW ALOFT IN PLACE ACROSS THE REGION IN BETWEEN WEST COAST RIDGING AND AN UPPER LOW OVER ONTARIO. THE COLD FRONT THAT WILL MOVE THROUGH THE PANHANDLES LATE TONIGHT INTO FRIDAY MORNING WAS STRETCHED ALONG THE NE/KS STATE LINE INTO FAR NORTHEAST CO. THE COLD FRONT WILL MOVE SOUTH THROUGH THE AREA. BRINGING WITH IT COOLER/DRIER/MORE STABLE AIR.
AND NORTHWESTERLY FLOW IN THE MID AND UPPER LEVELS COURTESY OF AN UPPER LEVEL TROUGH NORTH OF THE GREAT LAKES WILL KEEP A CHANCE FOR SCATTERED SHOWERS AND THUNDERSTORMS THIS EVENING. THOSE CHANCES WILL CONTINUE TO INCREASE THROUGH THE OVERNIGHT HOURS AND INTO FRIDAY AS A COLD FRONT DROPS SOUTHWARD ACROSS THE PANHANDLES.
GIVEN COOLER TEMPERATURES ALOFT ANY STORMS WHICH DO DEVELOP WILL HAVE POTENTIAL FOR SEVERE HAIL OR WIND. BEHIND BOUNDARY MUCH COOLER TEMPERATURES WILL PUSH SOUTH. CURRENT NRN CONUS MEAN TROUGH WILL CONTINUE TO AMPLIFY EVENTUALLY CLOSING OFF OR NEARLY CLOSING AS IT REACHES THE ERN GREAT LAKES/OH VALLEY. BIGGEST STORY THROUGH THE WEEKEND WILL BE A COOLER DRIER AIRMASS WITH HIGH PRESSURE CROSSING IA SAT. MINS MAY DIP JUST INTO THE UPPER 30S SAT MORNING NORTH AND WEST CLOSER TO THE RIDGE. RIDGE BUILDS FROM THE ROCKIES INTO THE NRN PLAINS BY SUN WITH RETURN FLOW STARTING. PATTERN CHANGE WILL THEN COMMENCE WITH WRN CONUS TROUGH MATURING. BEHIND BOUNDARY HIGH PRESSURE WILL KEEP CONDITIONS VFR THROUGH REMAINDER OF PERIOD WITH WINDS INCREASING AFTER 15Z.
200 PM CDT THU SEP 10 2015 DATA ANALYSIS THIS AFTERNOON FEATURES A CLOSED UPPER LEVEL LOW OVER CENTRAL ONTARIO WITH A LARGE/BROAD TROUGH OF LOW PRESSURE EXTENDING SOUTHWARD THROUGH THE CENTRAL CONUS. MAY SEE A FEW MORE CLOUDS SPREADING IN ACROSS NORTHERN WI BY MORNING AHEAD OF ANOTHER EMBEDDED TROUGH WITHIN THE LONGWAVE TROUGH COMING OUT OF CANADA. COMBINED WITH CLOUD COVER EXPECTED TO YIELD SURFACE TEMPERATURES ONLY IN THE MIDDLE 50S TO THE LOWER 60S. THE REST OF THE AREA SHOULD BE SAFE BUT CHILLY NONETHELESS WITH LOWS IN THE LOWER/MID 40S. WITH RIDGE AXIS OVERHEAD AND DEEP LIGHT WINDS THROUGH THE BOUNDARY LAYER. BUILDING HEIGHTS TAKE PLACE THROUGH THE PERIOD AS A RIDGE OF HIGH PRESSURE BENDS INTO THE REGION FROM THE NORTHERN PLAINS.
THIS EVENING THROUGH FRIDAY NIGHT WATER VAPOR PLACES UPPER TROF AXIS OVER THE NRN PLAINS/UPPER MIDWEST. AND NEAR FREEZING IN HIGHER BLKHLS VALLEYS. UPPER TROF SHIFTS EAST WHILE UPPER RIDGE BUILDS INTO THE NRN ROCKIES.
642 PM EDT THU SEP 10 2015 LOW PRESSURE WILL TRACK NORTHEAST ALONG THE NEW ENGLAND COAST TONIGHT THROUGH FRIDAY MORNING.
HIGH PRESSURE OVERHEAD WILL PROLONG DRY WEATHER AND ABOVE NORMAL TEMPERATURES FOR INTERIOR LOCATIONS THROUGH FRIDAY.
STILL HANGING ONTO THE CLOUD COVER AND THIS IS KEEPING TEMPERATURES IN THE LOWER TO MID 70S. THEREFORE FOCUS THE HIGHEST POPS ACROSS THE SE NEARER THE TN/VA BORDERS. MODELS REMAIN IN GOOD AGREEMENT WITH LULL IN THE PRECIP AHEAD OF SECOND COLD FRONT. A DEEP UPPER TROUGH WILL BE AMPLIFYING OVER THE EASTERN CONUS. WITH AN ASSOCIATED SURFACE COLD FRONT MOVING SE THROUGH OUR AREA.
323 PM CDT THU SEP 10 2015 A WEAK UPPER LEVEL TROF WILL PUSH TO THE EAST OF ALABAMA TONIGHT AND WILL BE THE PRIMARY FOCUS FOR EVENING SHOWERS AND THUNDERSTORMS. A WEAK SURFACE FRONT NEAR THE I-20 CORRIDOR THIS AFTERNOON WILL PUSH SLOWLY SOUTHEAST OVERNIGHT AS THE UPPER TROF AXIS MOVES OUT OF THE AREA. AND ACROSS NORTHWEST ALABAMA AS A STRONGER SHORT WAVE TROF APPROACHES FROM THE NORTHWEST.
ISSUED A FROST ADVISORY FOR ALL OF WESTERN AND CENTRAL NORTH DAKOTA FOR LATE TONIGHT INTO EARLY FRIDAY MORNING WITH COOL HIGH PRESSURE CENTERED OVER THE AREA. EXPECTING WIDESPREAD OVERNIGHT LOWS IN THE LOWER TO MID 30S. WHICH IS ON THE COOLER SIDE OF THE 12 UTC GUIDANCE SUITE WHICH HAS BETTER VERIFICATION WHEN STRONG RADIATIONAL COOLING IS EXPECTED. NORTHWEST FLOW FRIDAY NIGHT WILL TRANSITION TO ZONAL FLOW OVER THE WEEKEND WITH INCREASING LOW LEVEL WARM AIR ADVECTION/PER 850MB TEMPS AHEAD OF APPROACHING COLD FRONT.
WHILE AT THE SURFACE A COLD FRONT DROPPING OUT OF NEBRASKA AND OUTFLOW BOUNDARIES FROM LAST NIGHTS CONVECTION ARE POTENTIAL FOCUSING MECHANISMS.