Aikyam-Lab/Synoptic-Bench huggingface dataset:
ELEVATED LIGHT PRECIP WILL STILL BE A POSSIBILITY THROUGH THIS AFTERNOON AS THE AXIS OF A MID LEVEL SHORT WAVE TROUGH. AS HIGH PRESSURE SPREADS OVER THE AREA. A POSITIVELY TILTED 500MB TROUGH EXTENDS FROM THE GREAT LAKES REGION TO THE TEXAS BIG BEND EARLY THIS MORNING. A SECONDARY SURGE OF HIGH PRESSURE HAS MOVED OVER THE AREA OVERNIGHT. DEEP TROPICAL MOISTURE AND INCREASING LIFT FROM THE APPROACHING MID LEVEL TROUGH WILL SUPPORT OVERRUNNING RAIN FOR TODAY.
THE HIGHEST WINDS CONTINUE OVER OUR EASTERN AREA. FORECAST - THE COMPLICATED GULF LOW PRESSURE SYSTEM WILL MIGRATE NORTHEASTWARD TODAY INTO TOMORROW. AS THE LOW DRAWS NEARER THE ISLAND CHAIN. THE KEYS WILL REMAIN ON THE EASTERN AND SOUTHEASTERN SIDE OF THE LOW TONIGHT AND TOMORROW. A PREFRONTAL TROUGH WILL SWING THROUGH THE KEYS LATE TOMORROW AFTERNOON OR EVENING FOLLOWED BY A COLD FRONT. TEMPERATURES WILL TREND DOWNWARDS OVER THE FOLLOWING COUPLE OF DAYS AS AN AREA OF HIGH PRESSURE SHIFTS SOUTHEASTWARD OFF OF THE MAINLAND AND WINDS TURN NORTHERLY.
SHOWERS AND THUNDERSTORMS HAVE CONTINUED TO AFFECT AREAS MAINLY ALONG AND NORTH OF ALLIGATOR ALLEY ALONG A QUASI-WARM FRONTAL BOUNDARY. THOUGH STILL CANNOT BE COMPLETELY RULED OUT TONIGHT-THURSDAY AHEAD OF A COLD FRONT.
ELEVATED LIGHT PRECIP WILL BE A POSSIBILITY THROUGH THIS AFTERNOON AND EARLY EVENING AS THE AXIS OF A MID LEVEL SHORT WAVE TROUGH. AS HIGH PRESSURE SPREADS OVER THE AREA. MID 30S ACROSS THE RANCHLANDS AND BRUSH COUNTRY WILL RESULT IN ISOLATED FREEZING MARKS.
UPPER LEVEL TROUGH. WE COULD SEE POCKETS OF FREEZING OR SUB-FREEZING TEMPERATURES. BUT MAY NEED A SPECIAL WEATHER STATEMENT FOR BRIEF FREEZING TEMPERATURES. HIGH PRESSURE AND LOTS OF SUBSIDENCE WILL BE AROUND TOMORROW AS WINDS BACK MORE WESTERLY THROUGH THE AFTERNOON HOURS. 850 AND 925MB TEMPERATURES INCREASE AND WITH AMPLE SUNSHINE AND A RELATIVELY DRY GROUND WE SHOULD REBOUND NICELY BACK TOWARDS THE LOW-70S AREA WIDE. OVERNIGHT LOWS WILL BE WARMER WITH WARMER DEWPOINTS ADVECTING. AS SOUTHERLY SURFACE FLOW DEVELOPS WITH HIGH PRESSURE SLIDING THROUGH TO OUR EAST.
404 PM EST WED JAN 27 2016 A COLD FRONT WILL STALL OFF THE SOUTHEAST COAST THROUGH TONIGHT. LOW PRESSURE WILL TRACK NORTHEAST ALONG THE OFFSHORE STATIONARY FRONT THURSDAY.
245 PM CST WED JAN 27 2016 AN UPPER LEVEL TROUGH WILL MOVE EAST ACROSS TEXAS AND THE OPEN WATERS OF THE GULF TONIGHT THROUGH THURSDAY WHILE AN UPPER LEVEL RIDGE BUILDS IN FROM THE WEST. THE PASSAGE OF THE UPPER TROUGH AXIS WILL ALLOW A WEAK FRONT TO MOVE INTO NORTH TEXAS ON THURSDAY.
The upper level trough that brought rain and snow to the southern part of the CWA has moved southeast of the area today and will be replaced by dry northwest flow aloft. Lows will range from the mid 20s in southern valley locations where pooling of cold air will be maximized, to the lower 30s elsewhere.
243 PM EST WED JAN 27 2016 A SERIES OF LOW PRESSURE CENTERS WILL MOVE NORTHEASTWARD ALONG A FRONTAL ZONE NEAR THE SOUTHEAST COAST. DRY HIGH PRESSURE WILL DOMINATE OVER THE WEEKEND. THE HIGH-RESOLUTION MODELS DISPLAYED SCATTERED COVERAGE DURING MUCH OF THE NIGHT.
HIGH PRESSURE ALOFT WILL MAINTAIN DRY WEATHER CONDITIONS AND MILD TEMPERATURES OVER THE AREA THROUGH THURSDAY.
433 PM EST WED JAN 27 2016 A WEAK TROUGH OF LOW PRESSURE WILL MOVE THROUGH THE AREA ON THURSDAY.
TONIGHT THROUGH THURSDAY NIGHT HIGH PRESSURE OVER THE REGION TODAY. WITH THE HIGH MOVING OFF TO THE SOUTHEAST TONIGHT INTO THURSDAY. THIS SET UP USUALLY LEADS TO HARRISON AND MENA REMAINING WARMER THAN SURROUNDING AREAS FOR OVERNIGHT LOWS.
ASSOCIATED TROUGH AXIS BISECTING IOWA AND SHOULD BE INTO ILLINOIS BY AROUND 06Z THU. SLIGHTLY COOLER CONDITIONS EXPECTED FOR THURSDAY WITH THE WARMING TREND TO BEGIN IN EARNEST THURSDAY NIGHT INTO THE WEEKEND AS SOUTHWESTERLY TO WESTERLY FLOW SETS UP IN THE LOWER LEVELS.
UPPER RIDGE IS BUILDING OVER THE WESTERN CONUS. UPPER RIDGE AXIS SHIFTS OVER THE NORTHERN PLAINS. AND WEAK HIGH PRESSURE PUSHES THROUGH THE REGION.
The warmer temperatures aloft should also keep lows tonight warmer than last night with lows in the mid/upper 20s to around 30 degrees. Despite the northwesterly winds tomorrow, temperatures should be fairly similar or slightly warmer compared to today with highs reaching into the upper 40s to mid 50s. If anything, slightly warmer temperatures are expected tomorrow for far northern Kansas as decent snow melt is expected today across that area.
215 PM CST WED JAN 27 2016 A weak surface trof will move through early Thursday. After that, high pressure moves across the region maintaining dry weather.
1037 AM CST WED JAN 27 2016 LATEST SFC ANALYSIS SHOWING A STRONG RIDGE OF HIGH PRESSURE EXTENDING FROM THE MID MISS VALLEY. THIS RIDGE POSITION IS ALLOWING FOR CONTINUES NE SFC FLOW ACROSS MUCH OF THE REGION WITH A SLIGHTLY STRONGER PRESSURE GRADIENT ACROSS OUR EASTERN ZONES ALLOWING FOR A LITTLE MORE WIND SPEED. THE LAST IN THIS SERIES OF UPPER DISTURBANCES IS NOW ROUNDING THE BASE OF THE LONG WAVE TROUGH OVER TX. THESE CLOUDS WILL LIKEWISE CLEAR OUT BY THIS TIME TOMORROW W/ SKC FOR LATE WEEK AS THE UPPER RIDGE BUILD PRESSURE HEIGHTS ALOFT FOR MUCH OF THE COUNTRY W/ JAN THAW.
HIGH PRESSURE ALOFT WILL REMAIN THE DOMINANT FEATURE OVER THE GREAT BASIN THROUGH THURSDAY EVENING.
1218 PM EST WED JAN 27 2016 A SERIES OF LOW PRESSURE CENTERS WILL MOVE NORTHEASTWARD ALONG A FRONTAL ZONE NEAR THE SOUTHEAST COAST. DRY HIGH PRESSURE WILL DOMINATE OVER THE WEEKEND. THE COLD FRONT HAS SHIFTED EAST OF THE FORECAST AREA. THE MODELS DEPICT THIS TROUGH SHIFTING OFF THE SOUTHEAST COAST THURSDAY EVENING.
253 PM CST WED JAN 27 2016 THE 20Z SURFACE ANALYSIS INDICATED THAT HIGH PRESSURE WAS CENTERED OVER THE LOWER OHIO VALLEY WITH MOSTLY SUNNY SKIES ACROSS THE REGION. AND INTO THE LOW-MID 40S IN NORTHERN ALABAMA. THE UPPER TROUGH ACROSS THE EAST-SOUTHEAST PART OF THE U.
WILL CARRY A CHANCE FOR SNOW SHOWERS THURSDAY ACROSS THE ENTIRE AREA AS COLD FRONT ASSOCIATED WITH CLIPPER SWEEPS THROUGH DURING THE AFTERNOON.
16Z SURFACE ANALYSIS THIS MORNING PLACES A 1029 MB RIDGE OF HIGH PRESSURE OVER THE MIDDLE AND LOWER MISSISSIPPI VALLEYS. 3 AM H5 ANALYSIS DEPICTS A TROUGH AXIS JUST TO THE NORTHWEST OF THE MIDSOUTH EXTENDING FROM NEAR EL PASO TEXAS NORTHEASTWARD TO THE GREAT LAKES REGION. SURFACE ANALYSIS PLACES AN ELONGATED FRONTAL BOUNDARY ROUGHLY ALONG THE EASTERN SEABOARD WITH HIGH PRESSURE BUILDING INTO THE MIDSOUTH WITH SURFACE WINDS FROM THE NORTH. HIGH PRESSURE AND SURFACE WINDS FROM THE NORTH WILL KEEP CONDITIONS DRY AND COOL TODAY. TONIGHT WILL LIKELY BE THE LAST NIGHT AREA WIDE TEMPERATURES ARE SUBFREEZING FOR AT LEAST THE NEXT SEVEN DAYS.
WV IMAGERY CONTINUES TO SHOW MID LEVEL TROF AXIS SAGGING SOUTH PUTTING A SQUEEZE ON THE SW FLOW OVER THE AREA AND ITS ASSOCIATED CLOUD COVER. FLOW PATTERN LOOKS TO BECOME MORE ZONAL BY THE WEEKEND RESULTING IN THE TRANQUIL HIGH PRESSURE AREA SCOOTING TO THE EAST. RESULTING SOUTHERLY LOW LEVEL FLOW WILL BEGIN PUMPING IN THE JUICE ALONG WITH THE WARMER TEMPS.
128 PM CST WED JAN 27 2016 A weak surface trof will move through early Thursday. After that, high pressure moves across the region maintaining dry weather.
A HIGH PRESSURE RIDGE WILL KEEP THE REGION DRY WITH MILD TEMPERATURES.
658 AM CDT TUE OCT 27 2015 08z/3am surface analysis shows ridge of high pressure extending from New England southwestward to the Central Plains. Once the airmass moistens sufficiently and an upper-level trough approaching from the west provides increasing synoptic lift, rain will become widespread across the entire area by mid to late morning through the afternoon. Thanks to the rain and a brisk easterly wind of 10 to 15mph, high temperatures today will be considerably cooler than yesterday with readings remaining in the 50s in most locations. Forecast soundings remain quite stable, but do show modest elevated instability as the upper trough arrives. As the low lifts into the Great Lakes, showers will gradually diminish from southwest to northeast on Wednesday.
LOW PRESSURE CONTINUES OVER SOUTHERN MISSISSIPPI AND IS MOVING SLOWLY NORTHEAST. RAIN CHANCES WILL DECREASE SOMEWHAT TONIGHT SOUTH TO NORTH AS THE LOW MOVES FURTHER NORTH.
1025 AM EDT TUE OCT 27 2015 MORNING RAOBS ACRS CENTRAL/SOUTH FL REFLECT THE APPROACH OF A FRONTAL TROF FROM THE ERN GOMEX: KTBW/KEYW MEASURING PWAT VALUES BTWN 1. THE DRY LYR WILL STEADILY ERODE AS A DEEP HI PRES RIDGE OVER THE ERN CONUS/WRN ATLC DRIFTS EWD AND ALLOWS THE FRONTAL BOUNDARY TO PUSH INTO THE PENINSULA. HI PRES RIDGE SPANNING THE W ATLC FROM CAPE COD TO CUBA WILL MAINTAIN A MODERATE TO FRESH SERLY BREEZE THRU THIS EVNG AS A FRONTAL BNDRY OVR THE ERN GOMEX CREEPS TOWARD THE FL PENINSULA.
AN UPPER RIDGE WILL BRING DRY WEATHER TODAY. A WEAK COLD FRONT AND TRAILING UPPER LEVEL TROUGH WILL BRING A LITTLE RAIN LATE TONIGHT THROUGH WEDNESDAY NIGHT.
A COLD FRONT WILL APPROACH NORTHWEST OKLAHOMA JUST PRIOR TO 06Z. ISOLATED SHOWERS AND STORMS MAY DEVELOP BEHIND THE COLD FRONT. THE WAVE WILL PUSH A COLD FRONT THROUGH. DIFFERENCES CONTINUE BETWEEN THE GFS AND ECMWF MODEL FOR THE APPROACHING TROUGH/UPPER-LEVEL LOW AT THE END OF THE WEEK.
THE LOW LEVEL JET WILL START CRANKING UP IN STRENGTH THIS AFTERNOON INTO THE OVERNIGHT HOURS IMPACTING THE HIGHER TERRAIN.
LOCAL RADARS ARE DETECTING ONLY A FEW SHOWERS BOTH NORTH AND SOUTH OF THE LOWER AND MIDDLE KEYS. A WEAKENING LOW PRESSURE SYSTEM (1008 MB) IS LOCATED OVER SOUTHWEST MISSISSIPPI. WITH A LENGTHY RIDGE DRAPED ALONG THE ENTIRE EASTERN SEABOARD AND JUST OFFSHORE OF THE FLORIDA EAST COAST. THE LOW TEMPERATURE IN KEY WEST WAS 62 DEGREES.
1226 PM EDT TUE OCT 27 2015 HIGH PRESSURE WILL CROSS THE REGION TODAY THROUGH TONIGHT.
WINDS WILL SHIFT TO THE NORTHWEST BEHIND A WEAK COLD FRONT THAT WILL BE MOVING THROUGH THE AREA.
AS THE HYBRID LOW PRESSURE SYSTEM BEGINS TO MAKE ITS WAY INLAND OVER S CNTRL LA. THE ASSOCIATED UPPER LOW/TROUGH HAS MADE ITS WAY FURTHER INLAND OVER S CNTRL MS INTO SW AL. AS BOTH THE SFC/UPPER LOW CONTINUE TO TRACK NWD. MAINLY IN THE HIGHER ELEVATIONS. ALTHOUGH A FEW GUSTS MAY GET CLOSE TO 35 MPH IN THE HIGHER TERRAIN. AS SFC WINDS TURN MORE TOWARD THE W IN ADVANCE OF AN APPROACHING COLD FRONT. AS HIGH PRESSURE BUILDS INTO REGION IN THE WAKE OF THE FRONTAL PASSAGE LATE WED/EARLY THU. AND THEN QUICKLY TRANSLATING EWD INTO THE LOWER MS/TN VALLEY REGIONS IN THE LATE SAT/SUN TIME FRAME. 09 INCLEMENT FLYING WEATHER WILL CONTINUE AS AN AREA OF LOW PRESSURE MOVES NORTHWARD ACROSS THE LOWER MISSISSIPPI VALLEY. AS THE LOW MOVES NORTH OF THE MID SOUTH TONIGHT.
Precipitation will affect area terminals this morning as a low pressure system moves south. A low pressure system continues to move south through the Northern Rockies this AM.
1026 AM EDT TUE OCT 27 2015 ONE MORE DAY OF DRY WEATHER TODAY WITH HIGH PRESSURE REMAINING OVER THE REGION.
/ISSUED 725 AM EDT TUE OCT 27 2015/ CLOSED UPPER LOW OVER THE LOWER MISSISSIPPI VALLEY HAS ALREADY OPENED UP AND IS LIFTING NORTHEAST EARLY THIS MORNING. MEDIUM RANGE MODELS CONTINUE THE TREND OF THIS TROUGH LIFTING NORTHEAST AND DAMPING OUT SOMEWHAT THROUGH THE DAY TODAY. DECENT 850MB WINDS WILL KEEP THINGS A BIT GUSTY IN THE HIGHER ELEVATIONS OF NORTH GEORGIA THROUGH TONIGHT. HOWEVER SOME OF THE HIGHER RIDGES MAY SEE BRIEF GUSTS STRONG ENOUGH TO KNOCK OVER A TREE OR TWO WITH THE WET SOILS. 20 MAIN COLD FRONT WILL BE MOVING OUT OF THE CWFA WEDNESDAY NIGHT.
714 AM EDT TUE OCT 27 2015 ONE MORE DAY OF DRY WEATHER TODAY WITH HIGH PRESSURE REMAINING OVER THE REGION.
A COLD FRONT WILL DROP SOUTHWARD INTO NEW MEXICO TONIGHT WITH FREEZING TEMPERATURES POSSIBLE IN PARTS OF THE NORTHWEST PLATEAU AND NORTHEAST HIGHLANDS.
918 AM EDT TUE OCT 27 2015 HIGH PRESSURE WILL CROSS THE REGION TODAY THROUGH TONIGHT.
759 AM EDT TUE OCT 27 2015 A STATIONARY FRONT JUST SOUTH OF THE FORECAST AREA WILL LIFT NORTH ACROSS THE AREA AS A WARM FRONT LATE TONIGHT OR EARLY WEDNESDAY. A WEAK COLD FRONT WILL MOVE THROUGH THE AREA WEDNESDAY NIGHT.
HIGH PRESSURE AND DRY AIR STILL IN CONTROL FOR THE MOMENT. THE HIGH WILL KEEP US DRY FOR MOST OF THE DAY BUT LOSE THE FIRST BATTLE LATE TODAY.
WINDS WILL EASE UP THIS AFTERNOON AND EVENING AS THE AREA OF LOW PRESSURE OVER THE NORTHERN GULF MOVES NORTHEAST AND AWAY FROM THE REGION.
743 AM EDT TUE OCT 27 2015 HIGH PRESSURE WILL CROSS THE REGION TODAY THROUGH TONIGHT.
A SURFACE TROF OF LOW PRESSURE WILL MOVE ACROSS THE TAF SITES THIS MORNING. A COLD FRONT IS THEN FORECAST TO ZIP SEWD ACROSS THE TERMINAL SITES LATE THIS EVENING WITH GUSTY NORTH WINDS BEHIND THIS BOUNDARY.
UPPER TROUGH ALREADY DIGGING DOWN THROUGH CENTRAL AND SOUTHERN PLAINS AS EXPECTED YESTERDAY WILL TAKE ON NEGATIVE TILT TONIGHT WITH A 75 KNOT SPEED MAX PUNCHING INTO THE AREA LATER TONIGHT.
OVERNIGHT LOWS WERE IN THE LOW TO MID 50S AND HAVE ONLY CLIMBED A HAND FULL OF DEGREES THUS FAR. THE LOW WILL MOVE NORTHWARD TODAY BUT NOT BEFORE BRINGING ADDITIONAL RAINFALL AND BLUSTERY CONDITIONS TO THE TN VALLEY. WILL MONITOR TEMPS FOR ANY ADJUSTMENTS NEEDED AS CLOUD COVER WILL PERSIST AND BREEZY WINDS ADVECT SOME COOLER AIR FROM THE EAST. JMS /ISSUED 640 AM CDT TUE OCT 27 2015/ INCLEMENT FLYING WEATHER WILL CONTINUE AS AN AREA OF LOW PRESSURE MOVES NORTHWARD ACROSS THE LOWER MISSISSIPPI VALLEY. AS THE LOW MOVES NORTH OF THE MID SOUTH TONIGHT.
A cold front will shift winds at KABI to the northwest to north around 12KTS towards 12Z Wednesday. /ISSUED 434 AM CDT TUE OCT 27 2015/ (Today and Tonight) It will be warmer today, with downslope southwest to west winds of 5 to 15 mph. Most areas should warm to highs into the lower 80s. A cold front will move into the Big Country along the I-20 corridor towards sunrise Wednesday. Atmospheric mixing with stronger winds near the front should keep temperatures slightly warmer in the lower 50s. Expect breezy north winds Wednesday with cooler highs in the lower to mid 70s.
602 AM CDT TUE OCT 27 2015 UPPER LEVEL TROUGH HAS EXITED THE REGION TO THE WEST BUT WE ARE STILL DEALING WITH WRAP AROUND LOW CLOUDS AND DRIZZLE ACROSS A FEW TERMINAL LOCATIONS THIS MORNING. IF WE DO SEE THE LOW CLOUDS DISSIPATE FROM WEST TO EAST OVERNIGHT. LIFT ASSOCIATED WITH THIS TROUGH WILL BE RATHER STRONG BUT DEEP LAYER MOISTURE APPEARS TO BE LACKING. A STRONG UPPER TROUGH WILL DEVELOP OVER THE DESERT SW.
621 AM CDT TUE OCT 27 2015 ANALYSIS OF THE 07Z SURFACE DATA SHOWED A WEAK WARM FRONT ACROSS SOUTH DAKOTA AND SOUTH FLOW ALONG THE LEE SIDE TROUGH IN EASTERN COLORADO AND EASTERN WYOMING.
, and with a series of upper trofs well west from the Plains into the northern Rockies, our precipitation is essentially driven by isentropic lift and moisture transport. As the trof out west moves east, surface pressure falls and developing low pressure over the Mississippi Valley region coupled with the ascent with the approaching trof means an increase in the activity through the day.
PUSHING A COLD FRONT THROUGH THE STATE. HIGH PRESSURE WILL RETURN BRIEFLY WEDNESDAY.
A LOW PRESSURE TROF HAS MOVED EAST OF THE REGION AND THE ASSOCIATED COLD FRONT HAS MOVED INTO SOUTHWEST MONTANA. A COLD FRONT WILL MOVE SOUTHWARD THROUGH THE REGION TODAY.
POPS WERE BUMPED UP TO THE 60-80% RANGE WITH THE HIGHEST CHANCES EXPECTED ACROSS SE GA. SMALL CRAFT ADVISORY CONDITIONS MAY RETURN TOMORROW AS WINDS VEER TO THE SOUTH AND INCREASE IN ADVANCE OF A COLD FRONT. COASTAL IMPACTS: A COASTAL FLOOD ADVISORY REMAINS IN EFFECT THROUGH THE HIGH TIDES THIS AFTERNOON. THE TIDE LEVELS WE SAW THIS MORNING WILL LIKELY BE REPEATED AGAIN TOMORROW MORNING AND ANOTHER COASTAL FLOOD ADVISORY APPEARS LIKELY FOR THE HIGH TIDE CYCLE TOMORROW MORNING.
WESTERLY FLOW ALOFT AND HIGH PRESSURE AT THE SURFACE WILL CONTINUE TO PROVIDE SUBSIDENCE ACROSS THE AREA THROUGH TONIGHT. WESTERLY FLOW ALOFT AND HIGH PRESSURE AT THE SURFACE WILL CONTINUE TO PROVIDE SUBSIDENCE ACROSS THE REGION THROUGH THE PERIOD. EXCEPT FOR THE LOWER 80S AT THE BEACHES. LOW TEMPERATURES WILL ONLY FALL INTO THE LOW TO MID 60S TONIGHT DUE TO THE SOUTHERLY FLOW. MOSTLY SUNNY AND WARMER ON WEDNESDAY WITH HIGH TEMPERATURES IN LOW 90S. A WEAK COLD FRONT IS EXPECTED TO MOVE ACROSS THE NORTHERN RANCHLANDS BY LATE WEDNESDAY AFTERNOON.
1150 AM EDT TUE OCT 27 2015 A STATIONARY FRONT JUST SOUTH OF THE FORECAST AREA WILL LIFT NORTH ACROSS THE AREA AS A WARM FRONT LATE TONIGHT OR EARLY WEDNESDAY. A WEAK COLD FRONT WILL MOVE THROUGH THE AREA WEDNESDAY NIGHT.
LIGHT RAIN CHANCES INCREASE OVERNIGHT INTO WEDNESDAY MORNING AS THE MAIN COLD FRONT WILL PASS THROUGH THE STATE WITH THE BEST CHANCE OF RAIN FOR THE NORTH BAY.
Early Tuesday morning, an upper trough axis was making its way into western Kansas with several embedded areas of upper level energy embedded within the broader trough. The influx of quality low level moisture will interact with increasing (but modest) mid/upper level moisture associated with the trough incoming from the west. Clouds will keep high temperatures cooler than the past two days but will help modify tonight's lows. This will bring another chance for (mainly widely scattered) showers along with a cold front, increasing northwest winds, and cold advection by sunrise. As the deepening upper low lifts towards the Great Lakes region, winds and subsidence increase downstream during the day on Wednesday. The diurnal heating competing with the cold air advection will result in highs near the lower 60s.
A TRANSITORY UPPER LEVEL RIDGE OF HIGH PRESSURE WILL SHIFT EAST ACROSS THE REGION TODAY AND THIS EVENING.
A WARM FRONT LIFTING NORTHWARD TODAY WILL BRING ABOVE NORMAL TEMPERATURES INTO THE AREA WITH HIGHS IN THE MID 50S. TO THE LOWER 60S. AN UPPER LEVEL TROUGH OF LOW PRESSURE CURRENTLY OVER ALBERTA WILL TRACK SOUTHEASTWARD ACROSS THE REGION OVER THE NEXT 48 HOURS. THIS SYSTEM WILL BRING MUCH COOLER TEMPERATURES INTO THE REGION.
725 AM EDT TUE OCT 27 2015 CLOSED UPPER LOW OVER THE LOWER MISSISSIPPI VALLEY HAS ALREADY OPENED UP AND IS LIFTING NORTHEAST EARLY THIS MORNING. MEDIUM RANGE MODELS CONTINUE THE TREND OF THIS TROUGH LIFTING NORTHEAST AND DAMPING OUT SOMEWHAT THROUGH THE DAY TODAY. DECENT 850MB WINDS WILL KEEP THINGS A BIT GUSTY IN THE HIGHER ELEVATIONS OF NORTH GEORGIA THROUGH TONIGHT. HOWEVER SOME OF THE HIGHER RIDGES MAY SEE BRIEF GUSTS STRONG ENOUGH TO KNOCK OVER A TREE OR TWO WITH THE WET SOILS. 20 MAIN COLD FRONT WILL BE MOVING OUT OF THE CWFA WEDNESDAY NIGHT.
MOSTLY CLOUDY SKIES WILL PREVAIL TODAY AHEAD OF AN APPROACHING COLD FRONT. THE COLD FRONT WILL BRING A CHANCE OF LIGHT RAIN TO NORTH BAY AREA TODAY SPREADING SOUTH TONIGHT.
Westerly sfc flow will give way to a cold front late in the period, w/fropa anticipated at KHOB/KMAF around 10Z Wed.
1056 AM EDT TUE OCT 27 2015 A LARGE HIGH PRESSURE SYSTEM, WILL BRING ONE MORE DRY DAY TO THE AREA. A STRENGTHENING STORM SYSTEM, OVER THE GREAT LAKES REGION, ALONG WITH AN APPROACHING COLD FRONT, WILL BRING RAINY, WINDY, AND MILD CONDITIONS ON WEDNESDAY. WEDNESDAY INTO WEDNESDAY EVENING CONTINUE TO LOOK RAINY AND WINDY, AS A SIGNIFICANTLY DEEPENING CYCLONE LIFTS NORTHWARD THROUGH THE WESTERN/CENTRAL GREAT LAKES REGION, AND A TRAILING COLD FRONT APPROACHES NY/PA FROM THE WEST. NAM/GFS PROFILES SUGGEST THE POSSIBILITY OF WEAKLY UNSTABLE CONDITIONS (100-300 J/KG OF ML CAPE), JUST AHEAD OF THE COLD FRONT, IN THE LATE AFTERNOON-EVENING PERIOD, SO A MENTION OF ISOLATED THUNDER WAS ADDED.
TEMPERATURES IN SW COLORADO VALLEYS WERE DIPPING BELOW FREEZING BEFORE SUNRISE. WENT AHEAD AND ISSUED A FREEZE WARNING THERE FOR ELEVATIONS BELOW 7000 FT TRYING TO CAPTURE THE LOWEST ELEVATIONS. FREEZE WATCH REMAINS IN EFFECT TUE NIGHT/WED MORNING WITH STATISTICAL GUIDANCE STILL SHOWING MANY VALLEYS AT OR BELOW FREEZING. WINDS WILL BECOME MORE NORTHERLY AS A SHORT-LIVED RIDGE BUILDS IN. THE WIND SHIFT WILL ALLOW COOLER AIR TO DROP DOWN FROM THE NORTH CAUSING HIGH TEMPS TO DROP A FEW DEGREES. THE NEXT SYSTEM TO AFFECT US WILL BE ON OUR DOORSTEP WED NIGHT AS A COLD FRONT APPROACHES FROM THE WEST.
A COLD FRONT WILL BRING GUSTY NORTHERLY WINDS TOWARD THE END OF THE TAF PERIOD AND IS NOT CURRENTLY INDICATED IN THE TAF. THIS TROUGH WILL SLIDE EAST TODAY ALLOWING THE SURFACE WINDS TO VEER TO THE NORTHWEST. WITH HIGHS RANGING FROM THE MID 70S IN THE SOUTHWEST PANHANDLE TO THE LOWER 80S IN THE LOW ROLLING PLAINS. THE PASSAGE OF THIS WAVE WILL BE ACCOMPANIED BY A COLD FRONT WHICH IS EXPECTED TO RACE SOUTH THROUGH OUR FORECAST AREA BEFORE DAYBREAK ON WEDNESDAY. THE BREEZY POST-FRONTAL WINDS WEDNESDAY MORNING WILL QUICKLY SUBSIDE AS PROGRESSIVE SURFACE RIDGING BUILDS IN AND THE PRESSURE GRADIENT RELAXES.
520 AM CST SAT NOV 7 2015 CLOUDS ON THE LOW END OF VFR WILL AFFECT THE DHT AND AMA TAF SITES THROUGH THE MID TO LATE MORNING. ELONGATED WEAKENING EAST-TO-WEST ORIENTED UPPER TROUGH AXIS WILL LINGER THROUGH SUNDAY WITH LITTLE CONSEQUENCE BESIDES A FEW MID-HIGH CLOUDS.
652 AM EST SAT NOV 7 2015 AN APPROACHING COLD FRONT WILL MOVE THROUGH THE REGION BY THIS EVENING.
NO OTHER SIGNIFICANT WEATHER IS EXPECTED AS HIGH PRESSURE AT THE SURFACE AND DRIER AIR ALOFT MOVE INTO OKLAHOMA AND NORTH TEXAS.
PATCHY FOG HAD DEVELOPED OVER THE LOWER COLUMBIA BASIN THIS MORNING AND A NOW PRODUCT WAS ISSUED TO HIGHLIGHT THIS.
MAX TEMPS TODAY SHOULD RUN NEAR TO JUST A FEW DEGF COOLER THAN YESTERDAY MOST LOCATIONS. AND SHADED TOWARD THE SLIGHTLY WARMER BLENDED/BIAS CORRECTED GUIDANCE NUMBERS.
432 AM MST SAT NOV 7 2015 AN UPPER LEVEL RIDGE WILL BUILD OVER THE ROCKIES AND CENTRAL US THROUGH THE WEEKEND BRINGING MOSTLY CLEAR SKIES AND DRY CONDITIONS TO THE FORECAST AREA.
12Z TAF CYCLE COLD FRONT TO MOVE TO THE EAST SLOPES CENTRAL MT CHAIN AND INTO THE RGV 12Z-15Z WITH ELY WIND GUSTS TO AROUND 30-35KT NEAR WEST FACING CANYONS AND PASSES.
/ISSUED 557 AM CST SAT NOV 7 2015/ MVFR CIGS PREVAIL AT ALL TAF SITES AND THESE CIGS SHOULD CONTINUE FOR MUCH OF THE DAY AS MOISTURE OVERRUNS A SHALLOW COLD FRONT AT THE SURFACE ALONG THE GULF COAST.
/ISSUED 353 AM CST SAT NOV 7 2015/ EXTENSIVE ISENTROPIC LIFT AND LARGE SCALE UPWARD VERTICAL MOTION ASSOCIATED WITH A SHORT WAVE TROUGH WILL CONTINUE TO PRODUCE SCATTERED SHOWERS AND THUNDERSTORMS ACROSS NORTH TEXAS THIS MORNING. THE BREEZY NORTH WIND WILL MAKE IT FEEL EVEN COOLER. OVERNIGHT LOWS WILL BE IN THE LOWER AND MIDDLE 40S WITH EVEN A COUPLE OF UPPER 30 DEGREE READINGS IN THE NORTHWEST ZONES.
410 AM CST SAT NOV 7 2015 (Today and tonight) Showers and a few thunderstorms will continue today across much of West Central Texas due to weak mid and upper level ascent and a cold front moving south across the area. Temperatures will be cooler with highs in the lower to mid 60s.
933 AM EST SAT NOV 7 2015 COOLER AND MORE SEASONABLE TEMPERATURES RETURN THIS WEEKEND AS AN UPPER LEVEL TROUGH OF LOW PRESSURE MOVES ACROSS THE REGION LATE TODAY INTO TONIGHT. THIS TROUGH WILL PRODUCE SOME RAIN SHOWERS LATE TODAY INTO TONIGHT WITH TEMPERATURES FALLING THIS EVENING TO ALLOW SNOW SHOWERS IN THE MOUNTAINS. OVERNIGHT THE BASE OF THE MID-UPPER LEVEL TROUGH WILL MOVE THROUGH THE NORTH COUNTRY WITH SURFACE TEMPERATURES FALLING TO ALLOW SOME LIGHT SNOW SHOWERS IN THE MOUNTAINS. AS THE TROUGH EXITS EAST TOWARDS MORNING, SHOWERS WILL END AND DRIER, COOLER AIR WILL FILTER IN BEHIND THE TROUGH ON NW FLOW.
622 AM EST SAT NOV 7 2015 UPPER LEVEL TROUGHING REMAINS IN PLACE ACROSS THE UPPER MISSISSIPPI VALLEY AND THE WRN GREAT LAKES EARLY THIS MORNING. WITH THE TROUGH AXIS OVER THE NRN PLAINS ATTM. OVERALL SURFACE RIDGING IS BUILDING INTO MICHIGAN. WITH A LARGE AREA OF STRONG HIGH PRESSURE CENTERED OVER THE CENTRAL PLAINS. LATEST IR SATELLITE SHOWS COOLING CLOUD TOPS NORTH OF MINNESOTA IN THE VCNTY OF AN APPROACHING SHORT WAVE MARKED BY THE 500 MB TROUGH AXIS AND A DEVELOPING WEAKNESS IN THE LOW LEVEL PRESSURE PATTERN. OVERNIGHT LOWS WILL RANGE FROM THE UPPER 20S INLAND TO THE LOW TO MID 30S NEAR THE LAKESHORES. A LARGE AREA OF HIGH PRESSURE OVER THE EASTERN HALF OF THE U.
1033 AM EST SAT NOV 7 2015 THE COLD FRONT IS NOW THROUGH THE AREA WITH POST FRONTAL SHOWERS CURRENTLY CONTINUING. CHATTANOOGA AIRPORT, TN 67 47 61 45 / 100 20 10 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 64 44 60 41 / 100 10 10 10 OAK RIDGE, TN 64 43 59 42 / 100 0 10 10 TRI CITIES AIRPORT, TN 62 40 58 34 / 100 10 10 0.
IN THE LOW 50S TO LOW 60S. COOLER AIRMASS INTO THE MIDSOUTH. HIGH TEMPERATURES WILL BE IN THE LOW 60S ACROSS MOST OF THE AREA. A NEGATIVELY TILTED UPPER LEVEL TROUGH WILL SHIFT ACROSS THE AREA.