Aikyam-Lab/Synoptic-Bench huggingface dataset:
HIGH PRESSURE WILL CONTINUE AT THE SURFACE. MIN TEMPS COULD APPROACH FREEZING. NOT CONFIDENT ENOUGH THAT A LARGE AREA OF FREEZING TEMPS WOULD OCCUR. BUT TEMPERATURES MODERATE AS WE HEAD INTO THE MIDDLE AND END OF THE WORK WEEK AS THE PERSISTENT NORTHWESTERLY UPPER-LEVEL FLOW FLATTENS OVER THE REGION AND THE UPPER RIDGE EVENTUALLY BUILDS NORTH OUT OF THE GULF OF MEXICO. THE UPR LVL PATTERN BECOMES MORE ZONAL AS LONGWAVE TROUGH THAT IS CURRENTLY OVER THE EASTERN CONUS DEPARTS OFF THE ATLANTIC COAST. HIGH PRESSURE WILL REMAIN IN CONTROL ACROSS NORTH AND CENTRAL GEORGIA RESULTING IN DRY AND STABLE CONDITIONS WITH NO CHANCE FOR RAIN THROUGH THE PERIOD. TEMPERATURES WILL GRADUALLY WARM AS LOW-MID LVL HEIGHTS INCREASE IN RESPONSE TO UPR RIDGE BUILDING OVER THE GULF OF MEXICO.
1148 PM EDT SAT OCT 17 2015 A DEEP UPPER LEVEL TROUGH OVER EASTERN CANADA AND THE NORTHEAST CONUS WILL BRING BELOW NORMAL TEMPERATURES TO CENTRAL PA THIS WEEKEND. WIDESPREAD NIGHTTIME FREEZING CONDITIONS WILL LIKELY END THE GROWING SEASON. THE CASE FOR A WIDESPREAD FREEZE /ESP ACROSS THE LOWER SUSQ VALLEY/ APPEARS TO BE WEAKENING. LITTLE TO BE GAINED BY DROPPING WARNING AT THIS TIME AND TEMPS STILL LIKELY TO GET CLOSE TO FREEZING. THE 850MB THERMAL TROUGH /-4C TO -8C/ WILL MOVE THROUGH ON SUNDAY WITH ONE MORE DAY OF SEASONABLY COLD.
AN UPPER LOW, CURRENTLY NEAR 42N/126W, WILL CONTINUE TO SHIFT TOWARDS NORTHERN CALIFORNIA TONIGHT INTO SUNDAY. FLOW AROUND THIS LOW CONTINUES TO PUSH BANDS OF SHOWERS NORTH ACROSS THE INTERIOR NORTHWEST. MEANWHILE HAVE INCREASED POPS ACROSS THE LOWER BASIN AND FOOTHILLS OF WASHINGTON.
954 PM EDT SAT OCT 17 2015 UPDATE ANOTHER NIGHT WITH NEAR TO BELOW FREEZING TEMPERATURES EXPECTED OVER ALL BUT THE COASTAL SECTIONS. HIGH PRESSURE PASSING SOUTH OF MICHIGAN ON SUNDAY SHOULD BRING SUNSHINE WITH ONLY SLIGHTLY WARMER AFTERNOON TEMPERATURES.
100 AM EDT SUN OCT 18 2015 HIGH PRESSURE CENTERED OVER THE MID MS VALLEY CONTINUES TO GRADUALLY SHIFT EAST INTO THE OH VALLEY REGION AND HAS USHERED IN A RELATIVELY COLD AND DRY AIRMASS FOR MID OCTOBER. 17Z SFC ANALYSIS SHOWS HIGH PRESSURE SETTLING INTO THE MID MISSISSIPPI VALLEY WITH ITS INFLUENCE STRETCHING WELL EAST INTO THE OHIO VALLEY. THE MODELS REMAIN IN EXCELLENT AGREEMENT ALOFT THROUGH THE SHORT TERM PORTION OF THE FORECAST AS THEY ALL GRADUALLY MOVE A BROAD AND RELATIVELY DEEP TROUGH THE NORTHEASTERN PARTS OF NORTH AMERICA. IN THE WAKE OF THIS TROUGH DEPARTING THE OHIO VALLEY.
FOR 00Z TAFS HIGH PRESSURE NOSING IN FROM THE NORTHWEST WILL BRING MIDDLE TN TERMINAL SITES ANOTHER CLEAR/FROSTY NIGHT WITH LIGHT NORTH WINDS. MAINLY FOR CSV (FURTHEST FROM THE HIGH PRESSURE). WITH 850MB TEMPS AROUND 0C-6C AND NORTHERLY WINDS IN THE LOW LEVELS. AS MENTIONED YESTERDAY WITH A COOLER START IN REGARDS TO HIGH TEMPS TODAY. MORE WIDESPREAD TEMPS AT OR BELOW FREEZING MAY BE POSSIBLE. TEMPERATURES SLOWLY LOOK TO RECOVER FOR THE REMAINDER OF THE WEEK AS RIDGING STARTS TO BUILD IN.
AN UPPER LEVEL LOW OFF THE SOUTH OREGON COAST WILL CONTINUE A THREAT FOR SHOWERS THROUGH THE REST OF THE WEEKEND AS IT SLOWLY MOVES INLAND.
CLEAR SKIES AND WESTERLY DOWNSLOPE FLOW INCREASING THROUGH THE AFTERNOON WILL BRING TEMPERATURES INTO THE LOW 80S SOUTH AND THE MID 70S NORTH THIS AFTERNOON.
MILDER TONIGHT AS WEST WINDS BRINGING IN A BIT WARMER AIR.
LOW TEMPERATURES GENERALLY IN THE LOW 40S. LOW TEMPERATURES IN THE LOW TO MID 40S.
WARM AND DRY CONDITIONS WILL PERSIST TODAY AS HIGH PRESSURE REMAINS OVER THE REGION.
DOWNSLOPE FLOW AND GOOD MIXING POTENTIAL THIS AFTERNOON WILL SUPPORT WARMER TEMPS. SUPPORTING HIGHS IN THE LOWER TO MID 70S F GIVEN MIXING TO AT LEAST 750-MB PER MODEL-FORECAST SOUNDING PROFILES. WINDS ARE WITH THE HIGHEST GUSTS AROUND 30 MPH NEAR LIVINGSTON. WITH UPPER 30S F LIKELY IN THE LOWER-LYING AREAS OF SOUTHEASTERN MT LIKE BAKER. THAT IS BASED ON THE WARMER EDGE OF THE 00 UTC GUIDANCE THAT WE GENERALLY LEANED ON FOR DAYTIME HIGHS AND HUMIDITY VALUES FOR BOTH TODAY AND WEDNESDAY GIVEN A DRY AND WELL- MIXED BOUNDARY LAYER AND RECENTLY-OBSERVED MODEL BIASES.
1025 AM EDT TUE OCT 13 2015 AVIATION SECTION UPDATED COOL HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH MID WEEK.
1034 AM EDT TUE OCT 13 2015 A COLD FRONT WILL PUSH TO THE EAST TODAY.
A STRONG HIGH PRESSURE SYSTEM WILL BE IN PLACE THROUGH WEDNESDAY FOR CONTINUED UNSEASONABLY WARM AFTERNOONS.
COOL HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH MID WEEK.
A MOSTLY DRY COLD FRONT WILL CROSS THE AREA LATE THIS AFTERNOON/EVENING. HIGH PRESSURE WILL BUILD INTO THE AREA ON WEDNESDAY. THE TRAILING SFC COLD FRONT WILL LAG THE AFOREMENTIONED FAVORABLE NARROW MOIST PLUME BY SOME 8-12 HRS. REINFORCING THE BROAD TROUGH IN PLACE OVER THE EASTERN US ON WEDNESDAY. WEAK/MODEST DRY COLD AIR ADVECTION WILL CONTINUE INTO LATE WEDNEDAY/WEDNESDAY NIGHT AS THE HIGH BUILDS IN SLOWLY FROM THE WEST. HIGHS IN THE LOWER 70S NW TO MID 70S SE.
850 AM EDT TUE OCT 13 2015 A COLD FRONT ARRIVES THIS MORNING. DRY HIGH PRESSURE WILL DOMINATE OUR WEATHER FOR THE REMAINDER OF THE WEEK. COOLER AND DRIER HIGH PRESSURE BEGINS TO BUILD IN. ON WEDNESDAY MORNING UPPER TROUGH WILL EXTEND FROM HUDSON BY TO THE SOUTHERN APPALACHIANS. WHILE AN UPPER RIDGE BE ALONG THE WEST COAST.
THE COLD FRONT IS SLOWLY MOVING SOUTHWARD THROUGH THE HILL COUNTRY.
HIGH PRESSURE OVER NORTHERN ARIZONA WILL BRING WARM AND DRY WEATHER THROUGH WEDNESDAY.
40 THE COLD FRONT WAS APPROACHING THE COASTAL AREAS AT 1630Z. HIGH PRESSURE WILL MOVE OVERHEAD AND WINDS WILL BECOME LIGHT AND VARIABLE OVER THE INLAND SITES BY EARLY THIS EVENING.
AS LONGWAVE TROUGHING BECOMES WELL ESTABLISHED ACROSS THE EASTERN CONUS THROUGH THE MIDDLE OF THE WEEK.
APPEARS THE STRONGEST WINDS WILL OCCUR LATE THIS MORNING AND EARLY AFTERNOON WHILE THE LOWEST RELATIVE HUMIDITIES ARE EXPECTED LATE THIS AFTERNOON. TONIGHTS MINIMUM TEMPERATURES WILL BE SIMILAR TO A FEW DEGREES WARMER THAN THIS MORNINGS READINGS.
EXPECT A VERY PLEASANT DAY WITH HIGHS IN THE LOW/MID 80S AND LIGHT WEST/SOUTHWEST WINDS. WEAK HIGH PRESSURE WILL REMAIN OVER THE GULF WATERS THROUGH TODAY. A DRY COLD FRONT WILL MOVE THROUGH THE REGION ON WEDNESDAY. WITH HIGH PRESSURE THEN BUILDING IN BEHIND IT FOR THE END OF THE WEEK.
LOCAL 88DS SHOW SPOTTY SHOWERS STEADILY INCREASING IN COVERAGE AHEAD OF THE COLD FRONT WHICH CURRENTLY LIES ACROSS THE NRN PORTIONS OF THE FORECAST AREA. WITH LOW-LEVEL DRY AIR EXPECTED TO SCOUR OUT THE LOW CEILINGS CURRENTLY ENVELOPING MUCH OF THE AREA. /ISSUED 353 AM CDT TUE OCT 13 2015/ A COLD FRONT IS ALMOST TO OUR NORTHERN REGION (EAST TEXAS AND CENTRAL LOUISIANA) EARLY THIS MORNING. THE COLD FRONT SHOULD BE THROUGH MOST OF THE REGION BY NOON TODAY. DESPITE SEEING A COLD FRONT PASSAGE TODAY.
1043 AM CDT TUE OCT 13 2015 A COLD FRONT WILL SLIDE ACROSS THE REGION TODAY WITH GUSTY NORTHWESTERLY WINDS EXPECTED FOR THE MISSOURI RIVER VALLEY.
As for temperatures, cooler air to filter in despite the sunshine, so highs will only be in the upper 60s to low 70s. This could keep temperatures a tad cooler.
A COLD FRONT ACROSS WRN PA WILL COMPLETE IT/S PASSAGE THIS AFTERNOON. A FEW SHOWERS ARE ALSO POSSIBLE AS AN UPPER TROUGH ADVANCES ACROSS THE REGION. CONTINUOUS TROUGHING AND COLD ADVECTION ACROSS THE REGION WILL HELP SUPPORT A STRATOCU DECK THROUGH WEDNESDAY EVENING. WEAK UPPER IMPULSES PASSING THROUGH THE MAIN TROUGH MAY BRING LOW CHANCE SHOWERS FOR THE REGION NORTH OF I-80.
432 AM PDT TUE OCT 13 2015 After the passage of a weak weather disturbance expect increased sunshine with warmer and drier weather for the rest of the work week.
630 AM CDT TUE OCT 13 2015 UPPER LEVEL TROUGH CONTINUES TO PROGRESS EAST ACROSS THE WESTERN GREAT LAKES EARLY THIS MORNING WITH EXPANSIVE STRATUS/STRATOCUMULUS IN PLACE ACROSS MOST OF THE FORECAST AREA. WITH THE LOW EXITING TO THE EAST AND THE HIGH BUILDING IN FROM THE WEST. THE LOW STRATUS SHOULD GRADUALLY CLEAR TODAY FROM WEST TO EAST. HAVE LOWERED HIGH TEMPERATURES SLIGHTLY ALONG AND EAST OF THE MISSISSIPPI RIVER DUE TO THE LOW CLOUDS TODAY. AND BREEZY CONDITIONS ARE EXPECTED ACROSS THE REGION ON WEDNESDAY AS HIGH PRESSURE SLIDES TO THE SOUTH OF THE FORECAST AREA. A TROUGH AND COLD FRONT PUSH ACROSS THE REGION ON WEDNESDAY LOOK TO BRING A GOOD CHANCE OF SHOWERS TO THE FORECAST AREA. MUCH COOLER AIR WILL MOVE IN.
THE REMAINDER OF THE DAY WILL BE SUNNY WITH TEMPERATURES RISING INTO THE LOW 70S THIS AFTERNOON.
1050 AM EDT TUE OCT 13 2015 A COLD FRONT WILL SLOWLY CROSS THE REGION TODAY.
A cold front yesterday brought cooler air into West Central Texas. However, some lower areas may be even cooler, possibly closer to 50.
913 AM PDT TUE OCT 13 2015 GRADUALLY COOLER THROUGH THE WEEKEND. WITH A CHANCE OF AFTERNOON AND EARLY EVENING SHOWERS AND THUNDERSTORMS AS A LOW PRESSURE SYSTEM MOVES IN FROM THE SOUTHWEST.
GIVEN COMBINATION OF LGT/VRBL FLOW INVOF SLOW-MOVING COLD FRONT, RECENT RAFL AND CLEARING SKIES ALOFT.
AN UPPER RIDGE WILL START TO BUILD AND AMPLIFY OVER WESTERN WASHINGTON THIS AFTERNOON. LINGERING LOW-LEVEL MOISTURE TONIGHT WILL LEAD TO WIDESPREAD FOG OVER THE LOWLANDS ON WEDNESDAY MORNING.
This activity is out ahead of a cold front which stretches from northwest Georgia into west central Alabama.
A FAST MOVING TROUGH WILL SLIDE ACROSS NORTH DAKOTA THIS MORNING BRINING LITTLE MORE THAN INCREASED CLOUD COVER.
922 AM EDT TUE OCT 13 2015 KBYX DETECTS ISOLATED SHOWERS OVER OFFSHORE GULF OF MEXICO WATERS WEST-NORTHWEST OF THE LOWER KEYS. TEMPERATURES ARE IN THE LOWER TO MID 80S. IN THE LOW LEVELS OF THE ATMOSPHERE. A TROUGH OF LOW PRESSURE WILL BE LOCATED NEAR THE FLORIDA KEYS THIS AFTERNOON. AN ATLANTIC RIDGE OF HIGH PRESSURE WILL EXTEND ACROSS THE FLORIDA STRAITS TODAY. A TROUGH OF LOW PRESSURE WILL PROGRESS EASTWARD THROUGH THE WESTERN GULF OF MEXICO THIS AFTERNOON.
A WEAK COLD FRONT WAS MOVING ACROSS CENTRAL GEORGIA. THE COOL MORNING TEMPS WILL QUICKLY RISE INTO THE LOW TO MID 80S THIS AFTERNOON. A WEAK COLD FRONT WILL PUSH THROUGH THE REGION OVERNIGHT INTO WEDNESDAY MORNING. SMALL CRAFT EXERCISE CAUTION CONDITIONS EXPECTED OVER THE OFFSHORE WATERS AS SW WINDS INCREASE TO 15-20 KTS TONIGHT AS GRADIENT INCREASES AHEAD OF SURFACE COLD FRONT.
AS WINDS SHIFT TO THE WEST AND NORTHWEST BEHIND A DEPARTING AREA OF LOW PRESSURE ALOFT. DRIER AND COOLER AIR WILL FILTER INTO THE REGION. AS A SMALL WAVE OF LOW PRESSURE MOVES OUT OF THE WESTERN GREAT LAKES REGION AND ACROSS THE OHIO VALLEY THROUGH EARLY TOMORROW MORNING. OVERNIGHT LOWS SHOULD ALSO DROP TO NEAR NORMAL VALUES ALONG OUR RIDGE TOPS. RIDGING WILL BE IN PLACE FROM THE DESERT SOUTHWEST TO THE PACIFIC NORTHWEST. WITH BROAD TROUGHING ALONG THE EASTERN THIRD OF THE NATION. AND DEEPER TROUGHING ACROSS THE EASTERN PACIFIC. AS THE EASTERN PACIFIC TROUGH AND ROCKIES RIDGE EFFECTIVELY CANCEL THEMSELVES OUT WITH TIME. A SHORT WAVE TROUGH WILL BE MOVING FROM THE NORTHERN PLAINS THROUGH THE OHIO VALLEY. HIGH PRESSURE WILL BE BUILDING IN ACROSS THE AREA WEDNESDAY NIGHT.
403 AM MST TUE OCT 13 2015 A STRONG HIGH PRESSURE SYSTEM WILL BE IN PLACE THROUGH WEDNESDAY FOR CONTINUED UNSEASONABLY WARM AFTERNOONS.
WILL BE TRANSITIONING INTO A QUIET WEATHER PATTERN AS A COLD FRONT TRACKS THROUGH THE AREA TODAY. CHATTANOOGA AIRPORT, TN 76 48 73 45 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 74 46 70 44 / 0 0 0 0 OAK RIDGE, TN 74 46 70 44 / 0 0 0 0 TRI CITIES AIRPORT, TN 72 45 67 40 / 10 0 0 0.
621 AM CDT TUE OCT 13 2015 With high pressure ridge in the plains, surface cyclonic flow will continue across the CWA today.
THE NAM MAINTAINS THE LOW LEVEL INVERSION SO THUNDER WILL REMAIN NIL.
TEMPERATURES GENERALLY RANGED FROM THE MID TO UPPER 30S NORTH TO THE LOWER TO MIDDLE 40S SOUTH. OVERNIGHT LOWS SHOULD RANGE FROM THE LOWER TO MIDDLE 30S FOR MOST AREAS. WITH HIGHS RANGING FROM THE LOWER TO MIDDLE 60S SOUTH TO THE MID 50S NORTH.
SCATTERED TO NUMEROUS SHOWERS AND STORMS CONTINUE TO DEVELOP EARLY THIS MORNING ASSOCIATED WITH A STRONG OUTFLOW BOUNDARY AHEAD OF A SURFACE COLD FRONT. A LOW LEVEL JET OUT OF THE SOUTHWEST HAS KEPT TEMPERATURES NEARLY STEADY FOR MANY LOCATIONS OUT AHEAD OF THE COLD FRONT. RAIN CHANCES WILL ABRUPTLY COME TO AN END FROM NORTH TO SOUTH THROUGH THE MORNING AS DRIER AND COOLER AIR FILTERS SOUTHWARD. THE CURRENT FORECAST OF MID 40S NORTH TO THE LOWER 50S SOUTH STILL LOOKS ON TRACK.
WITH THE QUICKLY EASING PRECIP ASSOCIATED WITH A PRE-FRONTAL TROUGH ALONG THE COAST. MVFR LEVEL CIGS ASSOCIATED WITH A PRE-FRONTAL TROUGH HAS MOVED TO NEAR THE COAST.
A COLD FRONT IS EXPECTED TO CROSS THE REGION THIS MORNING. A FEW SHOWERS ARE POSSIBLE ESPECIALLY N OF I 80 AS AN UPPER TROUGH ADVANCES ACROSS THE REGION. CONTINUOUS TROUGHING AND COLD ADVECTION ACROSS THE REGION WILL HELP SUPPORT A STRATOCU DECK THROUGH WEDNESDAY EVENING. WEAK UPPER IMPULSES PASSING THROUGH THE MAIN TROUGH MAY BRING LOW CHANCE SHOWERS FOR THE REGION NORTH OF I-80.
COOLER AND MUCH DRIER AIR WAS FILTERING IN TO THE REGION AS A STRONG CANADIAN HIGH PRESSURE SYSTEM BUILDS SOUTH.
1033 AM EDT TUE OCT 13 2015 COOLER AIR WILL CONTINUE TO FILTER INTO THE REGION TODAY BEHIND A FRONTAL BOUNDARY.
740 AM CDT TUE OCT 13 2015 VRF CONDITIONS WILL PERSIST IN A WAKE OF COLD FRONT WHICH IS SOUTH OF ARKLATEX TERMINALS. NOT EXPECTING TO SEE MUCH IN THE WAY OF COOLER TEMPS IN THIS POST-FRONTAL AIR MASS.
A FLAT RIDGE OF HIGH PRESSURE WILL BEGIN TO AMPLIFY OVER THE REGION DURING THE NEXT 36 HOURS.
A MOSTLY DRY COLD FRONT WILL CROSS THE AREA LATE THIS AFTERNOON/EVENING. HIGH PRESSURE WILL BUILD INTO THE AREA ON WEDNESDAY. GIVE JUST A GLANCING BLOW TODAY AS THE MAIN NORTHERN STREAM TROUGH AND PRIMARY COLD FRONT. THE COLD FRONT WILL MOVE INTO THE WESTERN PIEDMONT LATER THIS AFTERNOON. MERGING WITH A PREFRONTAL TROUGH CURRENTLY OVER THE WESTERN PIEDMONT. REINFORCING THE BROAD TROUGH IN PLACE OVER THE EASTERN US ON WEDNESDAY. WEAK/MODEST DRY COLD AIR ADVECTION WILL CONTINUE INTO LATE WEDNEDAY/WEDNESDAY NIGHT AS THE HIGH BUILDS IN SLOWLY FROM THE WEST. HIGHS IN THE LOWER 70S NW TO MID 70S SE.
1000 AM PDT TUE OCT 13 2015 AN UPPER LEVEL LOW APPROACHING FROM THE SOUTHWEST WILL BRING THE SLIGHT CHANCE OF THUNDERSTORMS ACROSS THE MOUNTAINS THIS AFTERNOON.
AND STILL LOOKS LIKE IT SHOULD DROP BELOW FREEZING IN THE CENTER OF THE SAN LUIS VALLEY BY MORNING. ESPECIALLY ACROSS THE SAN LUIS VALLEY AND SOME OF THE HIGHER MOUNTAIN VALLEYS. ARE BELOW FREEZING FOR KALS AND ALTHOUGH IT SHOULD BE A BRIEF HIT. LOOKS LIKE A 2-3 HOUR WINDOW OF SUB FREEZING TEMPERATURES WILL BE POSSIBLE ACROSS THE CENTRAL AND SOUTHERN PORTIONS OF THE SAN LUIS VALLEY.
ALSO DO HAVE SOME HOLES IN THE LOWER CLOUDS WASKISH UP THROUGH LAKE OF THE WOODS. MILDER TONIGHT AS WEST WINDS BRINGING IN A BIT WARMER AIR.
A cold front has pushed se of IL into central KY and mid TN late this morning with breezy nw winds 10 to 16 mph and gusts of 20 to 26 mph over central/se IL bringing in cooler and drier air. Dewpoints were mostly in the lower 40s. Weak high pressure of 1015 mb drifting into the upper Midwest by this evening should weaken pressure gradient and winds later today. With high pressure ridge in the plains, surface cyclonic flow will continue across the CWA today.
927 AM EDT TUE OCT 13 2015 A COLD FRONT WILL MOVE THROUGH THE FORECAST AREA LATE THIS AFTERNOON AND EVENING. THE COLD FRONT WILL MOVE THROUGH THE FORECAST AREA LATE THIS AFTERNOON AND EVENING. RADAR TRENDS AND THE HIGH-RESOLUTION MODELS INDICATE JUST ISOLATED SHOWER COVERAGE. IT WILL BE WARM JUST AHEAD OF THE COLD FRONT AND EXPECT HIGHS IN THE LOWER 80S.
A PRE-FRONTAL TROUGH AXIS BROUGHT NORTHERN ALABAMA AND SOUTHERN MIDDLE TENNESSEE BETWEEN 1/4 AND 3/4 OF AN INCH OF RAINFALL OVERNIGHT. MUCH DRIER AND COOLER AIR WILL PUSH INTO THE REGION ON TUESDAY AND REMAIN IN PLACE FOR MUCH OF THE WEEK. IN HIGHER ELEVATIONS HIGHS WILL LIKELY ONLY REACH THE LOWER 70S.
632 AM CDT TUE OCT 13 2015 AREA OF HIGH PRESSURE TO CONTINUE TO BUILD INTO THE CENTRAL US AT THE SURFACE.
THE PAC NW WILL REMAIN UNDER WEAK RIDGING THROUGH THE SHORT TERM.
TEMPERATURES TODAY WILL BE COOLER MAINLY OUT WEST. AND MOST MODEL GUIDANCE IS SHOWING SIMILAR IF NOT WARMER TEMPERATURES OVER THE EAST TODAY.
LATEST MODEL GUIDANCE CONTINUES TO SHOW A RATHER VIGOROUS SHORT WAVE APPROACHING THE FORECAST AREA FROM THE NW THIS MORNING PROGGED TO TRACK SE AND EAST QUICKLY TODAY ROUNDING THE BASE OF MAIN UPPER TROF LOCATED OVER MUCH OF THE EASTERN UNITED STATES LATE TODAY AND EARLY TONIGHT. AS FOR TEMPS WILL USE A BLEND OF THE CURRENT 00Z MAV AND MET GUIDANCE THROUGH TONIGHT RESULTING IN HIGHS IN THE MID 80S FOR MOST INLAND AREAS AND THE LOWER 80S CLOSER TO THE COAST. FOR LOWS TONIGHT WITH CLOUDS CLEARING OFF QUICKLY WILL LEAN TOWARDS THE COOLER MAV GUIDANCE WHICH LEADS TO THE LOWS IN THE UPPER 40S TO LOWER 50S FOR MOST INLAND AREA NORTH OF THE I-65 CORRIDOR AND THE LOWER TO MIDDLE 50S FURTHER TO SOUTH TO THE COAST.
610 AM CDT TUE OCT 13 2015 The quiet pattern will continue across the area for the next several days as surface ridging settles into the area, bringing dry and somewhat cooler air. Helping to keep the area under dry conditions is the mid level trough, which is currently off to the east/northeast of the forecast area, with NW H5 flow overhead and fairly strong mid level subsidence. While temperatures are generally pleasant across the area, and perhaps a bit cooler than the previous few days high temperatures will reflect values well above normal for the next few days. Highs will generally be in the middle to upper 70s, with a few areas in the lower 80s (mainly south of I-70).
1012 AM EDT TUE OCT 13 2015 A COLD FRONT WILL MOVE THROUGH THE AREA TONIGHT FOLLOWED BY HIGH PRESSURE THROUGH LATE WEEK.
A very weak surface pressure gradient will be in place across western Kansas today with light westerly winds becoming light north to light and variable, as weak low pressure moves into parts of southwest Kansas. Slightly cooler temps will be found behind a weak cold front with highs from 79 to 82 degrees.
HIGH PRESSURE WILL CONTINUE TO BUILD SOUTH INTO THE FORECAST AREA TODAY IN THE WAKE OF A COLD FRONT THAT'S CURRENTLY PUSHING SOUTH AND OUT OF THE FORECAST AREA. AS A COOLER DRIER AIRMASS ADVECTS SOUTH INTO THE REGION. THE COLD FRONT WILL MOVE SOUTHEAST OF THE AREA THIS MORNING AND THERE COULD BE A FEW SHOWERS EARLY BEFORE MOVING EAST BY NOON. LITTLE WILL CHANGE WEDNESDAY NIGHT UNDER HIGH PRESSURE RIDGING. WITH SLIGHTLY WARMER OVERNIGHT LOWS IN THE UPPER 40S AND LOW 50S.
HIGH PRESSURE WILL PREVAIL OVER THE CENTRAL PLAINS WITH WEAK SFC RIDGING EXTENDING INTO CENTRAL WI. HIGH HIGH PRESSURE CENTERED JUST TO THE SOUTHWEST OF WISCONSIN WILL BRING MOSTLY SUNNY SKIES WEDNESDAY.
DRIER AIR WILL EVENTUALLY BUILD INTO THE REGION SCATTERING OUT THE LOW CLOUDS BY LATE MORNING.
1242 PM EDT TUE OCT 13 2015 THE AVIATION SECTION HAS BEEN UPDATED BELOW COOL HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH MID WEEK.
NEAR FREEZING TEMPERATURES AND PATCHY FROST WILL BE PRETTY LOCALIZED THIS MORNING AND WEDNESDAY MORNING.
Highs today will range from the lower to middle 70s across the eastern Ozarks to the upper 70s along the I-49 corridor.
FRONTAL BOUNDARY WAS LOCATED JUST NORTH OF THE FORECAST AREA WITH DEWPOINTS DROPPING OFF INTO THE LOWER 50S. INSTABILITY IS A LITTLE STRONGER WITH THE HIGHER MOISTURE IN PLACE WITH 12Z CRP SOUNDING SHOWING CAPE VALUE AROUND 2500 J/KG.
DEEP LAYER TROUGH OVER THE EASTERN CONUS WAS PRODUCING DEEP WEST SOUTHWEST FLOW. MORNING SOUNDINGS SHOW DRY AIR ALOFT BUT THE LOW LEVEL FLOW HAD TAPPED SOME HIGHER MOISTURE VALUES WITH PRECIPITABLE WATER CLIMBING OVER SOUTH FLORIDA AND UP TO TAMPA. LOW LEVEL RIDGE AXIS ACROSS SOUTH FL WILL PRODUCE A WESTERLY FLOW OVER THE ATLC COASTAL WATERS. A LITTLE STRONGER ACROSS THE NORTHERN WATERS (10-15 KNOTS) WHERE PRESSURE GRADIENT IS A LITTLE TIGHTER AND A LITTLE LIGHTER ACROSS THE SOUTH (5-10 KNOTS) CLOSER TO THE RIDGE AXIS.
/ISSUED 740 AM CDT TUE OCT 13 2015/ VRF CONDITIONS WILL PERSIST IN A WAKE OF COLD FRONT WHICH IS SOUTH OF ARKLATEX TERMINALS. NOT EXPECTING TO SEE MUCH IN THE WAY OF COOLER TEMPS IN THIS POST-FRONTAL AIR MASS.
1059 AM EDT TUE OCT 13 2015 LOW PRESSURE OVER THE GREAT LAKES WILL BRING COOLER AIR WITH LOTS OF CLOUDS THROUGH TONIGHT. COOL DRY HIGH PRESSURE FOR WEDNESDAY.
SCATTERED STRONG TO BRIEF SEVERE STORMS ARE OCCURRING WELL NW OF D/FW THIS EVENING IN RESPONSE TO HOT AND UNSTABLE CONDITIONS AHEAD OF A COLD FRONT CURRENTLY MOVING INTO SRN OK AND NW TX. ANOTHER STORM OUTFLOW FROM ACTIVITY SOUTHWEST WAS CURRENTLY APPROACHING BRIDGEPORT AND MINERAL WELLS. CURRENT SURFACE OBS SHOW THAT THE COLD FRONT HAS SLOWED AS EXPECTED AND AT 3 PM EXTENDED FROM NEAR MIDLAND TO WICHITA FALLS TO FORT SMITH ARKANSAS. SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP ALONG AND AHEAD OF THE COLD FRONT BUT MOST ACTIVITY SHOULD DISSIPATE AFTER SUNSET.
1149 PM CDT SUN AUG 23 2015 HIGH PRESSURE WAS THE DOMINANT SURFACE FEATURE ON THE HIGH PLAINS THIS AFTERNOON. COMBINING THAT WITH CLEAR SKY WILL ALLOW TEMPERATURES TO FALL INTO THE LOWER FORTIES AGAIN OVER MUCH OF CENTRAL AND NORTH CENTRAL NEBRASKA.
/ISSUED 345 PM CDT SUN AUG 23 2015/ THE COLD FRONT THAT PUSHED SOUTH THROUGH OUR AREA EARLIER TODAY IS CURRENTLY PARKED ALONG THE I20 CORRIDOR WITH ONGOING CONVECTION FROM SNYDER TO ABILENE. ECMWF/SREF QPF SIGNALS ARE HIGHER FOR OUR AREA ON MONDAY THAN THE NAM/GFS DUE TO DIFFERENCES IN THE LOW LEVEL WIND FIELDS RESPONDING TO SURFACE PRESSURE FALLS. TEMPERATURE FORECAST REMAINED RELATIVELY UNCHANGED FROM PREVIOUS WITH A NICE COOL DOWN INTO THE MID-UPPER 80S BEHIND THE COLD FRONT. A LITTLE WARMER OFF THE CAPROCK INTO THE ROLLING PLAINS.
HIGH PRESSURE REMAINS ANCHORED OVER THE NORTHERN GULF OF MEXICO PROVIDING THE AREA WITH THE LAST DAY OF A S-SW FLOW. ESPECIALLY OUT IN THE WEST WHERE DEW POINTS REMAIN IN THE LOWER 70S. THERE IS ONLY A SHOWER TWO PRESENTLY OUT ACROSS THE AREA BUT WITH REMNANT OUTFLOW BOUNDARIES FROM THE MCS AS WELL AS DIFFERENTIAL HEATING POSSIBLY SETTING UP A PREFRONTAL TROUGH. THE TRUE COLD FRONT LOOKS TO ARRIVE AND MOVE THROUGH THE AREA BETWEEN 06-12Z MONDAY MORNING AND WILL CONTINUE SLIGHT CHANCE POPS OVERNIGHT AS WELL AS IN THE SOUTHEASTERN AREAS THROUGH 15Z FOR LINGERING SHOWERS.
RAIN SHOWERS DEVELOPED A BIT FURTHER WEST THAN EXPECTED AS VORT MAX ROTATES AROUND UPPER LOW OVER WRN ONTARIO. LOOKING AT BREEZY CONDITIONS DEVELOPING ONCE AGAIN BY MONDAY AFTERNOON WITH HIGHS A LITTLE WARMER THAN TODAY.
1003 PM EDT SUN AUG 23 2015 HIGH PRESSURE WILL BUILD INTO THE AREA FROM THE NORTH TONIGHT.
A WEAK COLD FRONT IS DRAPED FROM WEST TEXAS INTO NORTH CENTRAL TEXAS THIS EVENING AND THIS FEATURE IS EXPECTED TO REMAIN NORTH OF THE REGION OVERNIGHT.
A COLD FRONT WILL SHIFT EAST QUICKLY THIS EVENING. WITH HIGH PRESSURE REESTABLISHING OVER THE OHIO VALLEY. DRY AND PLEASANT WEATHER IS EXPECTED FOR THE ENTIRE WORK WEEK AS THE HIGH REMAINS THE DOMINANT WEATHER FEATURE. OVERNIGHT LOWS IN THE LOW TO MID 50S STILL SEEM REASONABLE AS RADIATIONAL COOLING COMMENCES. GENERALLY WENT WITH A MOS BLEND FOR LOW TEMPERATURES TONIGHT IN THE LOW TO MID 50S WHICH SEEMS VERY REASONABLE. FORECAST CHALLENGES ARE MINIMAL AS STRONG HIGH PRESSURE BUILDS IN A FAIRLY STRONG UPPER LOW FOR THIS TIME OF YEAR WILL ROTATE SLOWLY THROUGH THE GREAT LAKES. THIS WILL ALLOW A BROAD UPPER TROUGH WITH COOL CYCLONIC FLOW OVER THE REGION THROUGH AT LEAST MIDWEEK. THIS OCCURS AS A STRONG UPPER TROUGH FROM EASTERN ONTARIO TO SOUTHERN NEW ENGLAND MOVES EASTWARD AND WEAKENS.
741 PM EDT SUN AUG 23 2015 AN UPPER LEVEL LOW PRESSURE SYSTEM WILL MOVE OVER THE GREAT LAKES REGION THIS WEEK, AND PROVIDE FOR UNSETTLED WEATHER IN THE NORTHEAST.
THE AIR MASS REMAINS VERY DRY IN THE LOWER LEVELS. TEMPERATURES WILL BE A LITTLE WARMER WITH HIGHS 4-8 DEGREES ABOVE NORMAL.
AFTERNOON STORMS WILL BE CONFINED TO THE HIGH COUNTRY AND REMAIN MAINLY ISOLATED. MAIN CONCENTRATION OF SMOKE ON THE WEST SIDE OF THE DENVER CYCLONE SHOULD BE THINNING MONDAY WITH DAYTIME HEATING AND GRADUAL DISPERSION.
A REINFORCING SHOT OF COOLER AIR ROTATES AROUND DEPARTING LOW TONIGHT THROUGH MONDAY.
1235 AM EDT MON AUG 24 2015 HIGH PRESSURE WILL BUILD INTO THE AREA FROM THE NORTH TONIGHT.