Aikyam-Lab/Synoptic-Bench huggingface dataset:
334 AM CDT THU SEP 3 2015 SURFACE MAP EARLY THIS MORNING HAS A WARM FRONTAL BOUNDARY EXTENDING FROM SOUTHERN MN EASTWARD INTO SOUTHERN WI. THE AFOREMENTIONED FRONTAL BOUNDARY WILL STAY PUT WHILE A MID-LEVEL TROUGH AND PUSH OF MID-LEVEL PV-ADVECTION DRIFTS SOUTHEAST ACROSS CENTRAL WI BY LATER THIS AFTERNOON. MOISTURE CONVERGENCE ALONG THE FRONTAL BOUNDARY AND FORCING FROM MID-LEVEL TROUGH IS EXPECTED TO FIRE ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS EAST OF THE MISSISSIPPI RIVER. LINGERING ISOLATED STORMS EXPECTED TO CONTINUE INTO THE OVERNIGHT HOURS //MAINLY EAST OF THE MISSISSIPPI RIVER// AS THAT MID-LEVEL TROUGH CONTINUES TO PUSH SOUTH ACROSS THE AREA. KEPT A SMALL-END CHANCE IN FOR EAST OF THE MISSISSIPPI RIVER IN THE AFTERNOON AS THERE WILL STILL BE SOME WEAK SURFACE CONVERGENCE AND TROUGHINESS ALOFT WITH FAIRLY STEEP LAPSE RATES.
353 AM CDT THU SEP 3 2015 An upper ridge will remain over the area through the weekend resulting in a continuation of above normal temperatures along with minimal rain chances.
WEAK UPPER TROUGH OVERHEAD MAY PROVIDE ENOUGH OF A DISTURBANCE TO KICK OFF SOME ISOLATED SHOWERS AND MAYBE A THUNDERSTORM THIS AFTERNOON. AFTERNOON SHOWERS AND THUNDERSTORMS MAY BE POSSIBLE AGAIN ON FRIDAY FOR THE PLATEAU AS A WEAK UPPER DISTURBANCE SLIDES SOUTHWARD ALONG THE EASTERN SIDE OF THE RIDGE.
A TROUGH OF LOW PRESSURE ALONG THE WEST COAST WILL PUSH INLAND ON THURSDAY. SHARPLY COOLER TEMPERATURES WILL ALSO ACCOMPANY THIS CHANGE IN THE WEATHER.
Narrow cold-frontal rain bands have continued to develop and train along the very slow-moving cold front this morning, which is located along a line roughly from Grangeville, ID to Glacier NP.
WITH HIGH PRESSURE AT THE SFC REMAINING FAIRLY STAGNANT ACROSS THE TN/OH VALLEY STATES. WITH DEW PTS ALSO IN THE LOWER/MID 70S ACROSS MOST OF THE AREA.
YESTERDAY/S COLD FRONT BROUGHT COOLING AND MODERATE NORTHWEST WINDS TO OUR CWA EXCEPT IN SOUTH-CENTRAL IDAHO. A SECOND COLD FRONT WILL COME THROUGH TODAY WITH FURTHER COOLING AS WELL AS SHOWERS IN NRN ZONES AND THE MOUNTAINS OF SOUTHERN ZONES. COLD UPPER LOW NEAR VANCOUVER/BC WILL GO SOUTH ALONG THE WASHINGTON CASCADES TODAY AND OREGON CASCADES FRIDAY. COOLING ALOFT DUE TO THE UPPER LOW WILL CAUSE DESTABILIZATION FRIDAY AND A SLIGHT CHANCE OF THUNDERSTORMS IN ADDITION TO THE SHOWERS.
601 AM EDT THU SEP 3 2015 WEAK HIGH PRESSURE AND WEAK STEERING FLOW CONTINUES.
332 AM EDT THU SEP 3 2015 WEAK HIGH PRESSURE AND WEAK STEERING FLOW.
1247 AM CDT THU SEP 3 2015 AN UPPER RIDGE WILL BUILD OVER THE AREA TODAY.
140 AM EDT THU SEP 3 2015 AN UPPER LEVEL DISTURBANCE AND WEAK SURFACE COLD FRONT WILL MOVE INTO THE NORTH COUNTRY FROM QUEBEC AND ONTARIO TONIGHT. A DEEP LAYER RIDGE WILL RETURN TO THE REGION.
352 AM CDT THU SEP 3 2015 A RIDGE ALOFT WILL CONTINUE TO BE THE MAIN FEATURE OF OUR WEATHER INTO THE WEEKEND.
FOR TODAY THE TROUGH THROUGH THE REGION NORTHWEST OF OUR AREA WILL DIG A LITTLE DEEPER WITH A GENERAL WEAKER AREA OF HIGH PRESSURE REMAINING EAST AND SOUTHEAST OF US. THE FLOW IS WEAKER OVER THE WEEKEND AND WE SHOULD SEE MORE OF A WESTERLY FLOW AS THE MEAN TROUGH POSITION SHIFTS DEEPER INTO THE CONUS NORTH OF OUR AREA. GFS AND ECMWF ARE BOTH PICKING UP ON A STRONGER INVERTED TROUGH ROTATING AROUND THE SOUTHERN AND WESTERN PERIPHERY OF THE HIGH (STILL TO OUR EAST AND SOUTHEAST).
SUBTROPICAL RIDGING WILL BECOME REESTABLISHED ACROSS THE SOUTHERN/EASTERN GULF TODAY. THE UPPER RIDGE WILL WEAKEN SLIGHTLY ON FRIDAY AS BROAD CYCLONIC FLOW DEVELOPS ACROSS THE NORTHEAST AND MID ATLANTIC.
A COLD FRONT WILL PUSH THROUGH NORTHEAST CALIFORNIA AND NORTHWEST NEVADA FRIDAY, BRINGING WELL BELOW NORMAL TEMPERATURES TO START THE HOLIDAY WEEKEND. THE GREATEST CONCERN OVER THE NEXT FEW DAYS REMAINS AN AREA OF LOW PRESSURE AND ASSOCIATED COLD FRONT MOVING ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA.
431 AM CDT THU SEP 3 2015 ANOTHER HOT AND HUMID DAY IN STORE AS UPPER LEVEL RIDGING CONTINUES TO DOMINATE ACROSS THE REGION. DEW POINTS OVER OUR SOUTH CENTRAL SD ZONES WILL REMAIN IN THE LOWER TO MID 60S.
336 AM CDT THU SEP 3 2015 UPPER LEVEL RIDGING REMAINS IN PLACE ACROSS THE CENTRAL CONUS. WITH A FAIRLY STRONG UPPER TROUGH SITUATED OVER THE WEST COAST. WEAK UPPER RIDGING WAS OBSERVED. HIGH PRESSURE WAS OBSERVED ACROSS MUCH OF THE EASTERN CONUS. AND TEMPS WILL LIKELY WARM INTO THE LOW TO MID 90S.
433 AM EDT THU SEP 3 2015 AN UPPER LEVEL DISTURBANCE AND WEAK SURFACE COLD FRONT WILL MOVE SOUTH ACROSS THE NORTH COUNTRY TODAY. A DEEP LAYER RIDGE WILL RETURN TO THE REGION. WILL SEE A SLIGHTLY COOLER AIR MASS WITH NORTHERLY WINDS AROUND 10 MPH DEVELOPING THIS AFTERNOON. HIGH TEMPERATURES WILL BE GENERALLY IN THE LOWER TO MID 80S. HIGH PRESSURE BRINGS FAIR AND TRANQUIL CONDITIONS TONIGHT. HIGH PRESSURE SETTLES OVER FORECAST AREA ON FRIDAY. TEMPS WILL BE SLIGHTLY COOLER. DEEP LAYER RIDGE ANCHORED OVER THE NORTH COUNTRY THURSDAY NIGHT AND FRIDAY. EXCEPT FOR SOME UPPER 40S IN THE NORMALLY COOLER SPOTS IN THE ADIRONDACKS AND NORTHEAST KINGDOM.
252 AM CDT THU SEP 3 2015 UPPER RIDGING AND WARM AND HUMID AIR REMAINS IN PLACE WITH LITTLE EVIDENCE OF ANY CHANGES. COULD BE EVEN COOLER IF MORE CLOUDS HANG AROUND AS IN YESTERDAY SINCE WERE NOW INTO EARLY SEPTEMBER. WINDS FROM THE SOUTH AT 5 TO 10 KTS UNDER MOSTLY FAIR SKY AND HEAT INDICES TO RISE INTO THE LOWER 90S IN THE AFTERNOON MOST LOCATIONS.
235 AM EDT THU SEP 3 2015 AN UPPER LEVEL RIDGE WILL REMAIN TO OUR SOUTH AND WEST. WHILE AN UPPER LEVEL TROUGH SETS UP ALONG THE EAST COAST. ALONG WITH A TREND TOWARDS COOLER TEMPS. UPPER LEVEL RIDGE CENTERED TO OUR SOUTH OVER FLORIDA WILL SHIFT WEST INTO THE EASTERN GULF OF MEXICO. WHILE UPPER TROUGH SETS UP ALONG THE EAST COAST. THIS COULD KEEP MAX TEMPS BELOW THE WARMER GFS MOS GUIDANCE. UPPER RIDGE WILL STRETCH FROM THE WESTERN GULF COAST NE TOWARDS THE GREAT LAKES AND NEW ENGLAND REGION. UPPER TROUGH ON THE EAST SIDE OF THE RIDGE TO GENERALLY REMAIN JUST TO OUR NORTH FRIDAY.
IN THE URBAN AREAS, TEMPERATURES REMAINED IN THE LOWER 70S. FOR TODAY, COMBINATION OF RIDGING ALOFT AND AT THE SURFACE WILL CONTINUE.
354 AM EDT THU SEP 3 2015 WEAK LOW PRESSURE, TO THE NORTH, WILL DRIFT TO THE SOUTH, ENDING UP TO THE EAST OF THE REGION.
MOISTURE CONTINUES TO ADVECT INTO THE REGION FROM THE SOUTHWEST THANKS TO LOW PRESSURE TO THE NW AND HIGH PRESSURE TO THE EAST. SIMILAR CONDITIONS EXPECTED FRIDAY AS THE LOW PRESSURE TO OUR NW STARTS TO DROP DOWN THE COAST. EVEN THOUGH THE LOW DOES MOVE THE END RESULT IS THE SAME.
SLACK FLOW ALONG NEARBY MID LEVEL RIDGING AND ASSOCIATED DRIER AIR HAS KEPT SHOWER ACTIVITY LIMITED TO ISOLATED TO WIDELY SCATTERED. MID LEVEL RIDGING WILL ALSO SHIFT SOUTHWARD AND WEAKEN. A WEAK UPPER LEVEL LOW WILL SPREAD SOUTHWARD ACROSS FLORIDA AND GULF OF MEXICO. THE DEEP LAYERED ATLANTIC RIDGE WILL BEGIN BUILDING BACK WESTWARD ACROSS FLORIDA AND THE KEYS MOVING INTO MID WEEK. WEAK HIGH PRESSURE SYSTEM JUST NORTH OF OUR AREA WILL SHIFT SOUTHWARD AND DISSIPATE AS A TROUGH MOVES INTO FLORIDA.
240 AM CDT THU SEP 3 2015 A large upper level ridge over the central U. The upper ridge will remain in place through Sat as a high amplitude pattern remains in place with a strong storm system along the west coast.
146 AM EDT THU SEP 3 2015 A LARGE HIGH PRESSURE SYSTEM, WILL TEMPORARILY YIELD TO A WEAK FRONTAL BOUNDARY ON THURSDAY, RESULTING IN WIDELY SCATTERED SHOWERS AND THUNDERSTORMS. HIGH PRESSURE WILL RE-ASSERT ITS CONTROL, FROM FRIDAY THROUGH THE UPCOMING WEEKEND, TO BRING A RETURN TO DRY WEATHER, AND VERY WARM TEMPERATURES. OVER THE WEEKEND, A LARGE RIDGE BOTH SURFACE AND ALOFT WILL STRENGTHEN OVER THE EASTERN STATES. THUS SHOULD RESULT IN A RENEWED STRETCH OF DRY CONDITIONS, AND ABOVE NORMAL TEMPERATURES FOR EARLY SEP (HIGHS WELL INTO THE 80S, AND PERHAPS NEAR 90 IN SOME OF OUR NORMALLY WARMER VALLEY/URBAN LOCATIONS).
A LINGERING MID LEVEL TROUGH WITH AN AXIS DROPPING SOUTH ACROSS THE AREA LATE THIS AFTERNOON AND EVENING FURTHER COMPLICATES THINGS.
303 AM CDT THU SEP 3 2015 An upper level ridge will remain nearly stationary across the southern and central plains for the next 24 hours as an upper level trough across the pacific northwest amplifies southward along the west coast. Most of the weak upper level troughs embedded within the southern stream jet should move north-northeast around the western periphery of the upper ridge axis across the high plains. Highs once again should reach the lower to mid 90s across the CWA with the higher temperatures across the western and southwest counties of the CWA.
616 AM EDT THU SEP 3 2015 HIGH PRESSURE OVER THE TENNESSEE VALLEY WILL DRIFT EAST AND WEAKEN. HIGH PRESSURE OVER EASTERN CANADA WILL BUILD ACROSS THE NORTHEAST STATES FRIDAY THROUGH THE WEEKEND. SOME COOLER AIR ALOFT WILL MOVE OVER THE LOCAL AREA BEHIND THE UPPER DISTURBANCE AND THIS COULD LEAD TO ENHANCED DOWNBURST POTENTIAL LATE IN THE DAY. A WEAKENING BACK DOOR COLD FRONT WILL TRY TO CROSS THE AREA THIS EVENING.
IF CONVECTIVE OUTFLOW ENHANCES A LAKE BREEZE THEN IT COULD TURN COOLER NEAR THE LAKE THIS AFTERNOON. WEAKNESS BETWEEN MAIN UPPER RIDGE AND WEAK RIDGE OVER QUEBEC SHOULD RESULT IN WEAK CAPPING AT BEST FRIDAY AND A CONTINUED SLIGHT CHANCE OF AT LEAST ISOLATED STORMS IN THE AFTERNOON AND EVENING. LAKE BREEZE LOOKS MORE LIKELY TO KEEP LAKESHORE AREAS COOLER FRIDAY BUT INLAND TEMPS SHOULD AGAIN WARM INTO THE UPPER 80S TO NEAR 90. IZZI 310 AM CDT UPPER RIDGE LOOKS TO FLEX A BIT MORE NORTHEAST INTO THE REGION OVER THE WEEKEND AND WHILE ISOLATED STORMS CANNOT TOTALLY BE RULED OUT.
446 AM MDT THU SEP 3 2015 AN UPPER RIDGE WILL BE OVER THE CENTRAL STATES TODAY AND TONIGHT. WITH AN UPPER TROF OVER THE PACIFIC NORTHWEST. WITH GOOD MOISTURE AND WIDESPREAD PCPN EXPECTED OVR THE HIGHER TERRAIN ESPECIALLY ALONG THE CONTINENTAL DIVIDE. BUT SHOULD BE A LITTLE COOLER OVER WESTERN LOCATIONS.
237 AM EDT THU SEP 3 2015 A LARGE HIGH PRESSURE SYSTEM, WILL TEMPORARILY YIELD TO A WEAK FRONTAL BOUNDARY ON THURSDAY, RESULTING IN WIDELY SCATTERED SHOWERS AND THUNDERSTORMS. HIGH PRESSURE WILL RE-ASSERT ITS CONTROL, FROM FRIDAY THROUGH THE UPCOMING WEEKEND, TO BRING A RETURN TO DRY WEATHER, AND VERY WARM TEMPERATURES. OVER THE WEEKEND, A LARGE RIDGE BOTH SURFACE AND ALOFT WILL STRENGTHEN OVER THE EASTERN STATES. THUS SHOULD RESULT IN A RENEWED STRETCH OF DRY CONDITIONS, AND ABOVE NORMAL TEMPERATURES FOR EARLY SEP (HIGHS WELL INTO THE 80S, AND PERHAPS NEAR 90 IN SOME OF OUR NORMALLY WARMER VALLEY/URBAN LOCATIONS).
405 AM EDT THU SEP 3 2015 HIGH PRESSURE OVER THE TENNESSEE VALLEY WILL DRIFT EAST AND WEAKEN. HIGH PRESSURE OVER EASTERN CANADA WILL BUILD ACROSS THE NORTHEAST STATES FRIDAY THROUGH THE WEEKEND. SOME COOLER AIR ALOFT WILL MOVE OVER THE LOCAL AREA BEHIND THE UPPER DISTURBANCE AND THIS COULD LEAD TO ENHANCED DOWNBURST POTENTIAL LATE IN THE DAY. A WEAKENING BACK DOOR COLD FRONT WILL TRY TO CROSS THE AREA THIS EVENING.
154 AM EDT THU SEP 3 2015 A WEAK TROUGH WILL CROSS THE REGION ON THURSDAY WILL PRODUCE A FEW ISOLATED SHOWERS AND THUNDERSTORMS. HIGH PRESSURE RETURNS FOR FRIDAY WITH A RETURN TO SUNSHINE AND VERY WARM TEMPERATURES WHICH WILL LAST THROUGH THE ENTIRE LABOR DAY WEEKEND. A WEAK TROUGH WILL PUSH SOUTH ACROSS OUR REGION. THE DEVELOPING NORTHWEST FLOW WILL KEEP THE LAKESHORES A LITTLE COOLER. A WEAK UPPER LOW STALLED UNDERNEATH A LONGWAVE RIDGE IS FORECAST TO STALL ACROSS MICHIGAN WHILE RIDGING STRENGTHENS ACROSS NEW ENGLAND. TEMPERATURES WILL REMAIN ABOVE NORMAL WITH HIGHS AVERAGING IN THE LOWER 80S ON FRIDAY. DEW POINTS WILL ALSO DROP INTO THE LOWER 60S TO UPPER 50S WHICH WILL MAKE IT FEEL LESS HUMID. THIS WILL RESULT IN COOLER OVERNIGHT LOWS WHICH SHOULD DROP TO NEAR THESE DEW POINT VALUES ON THURSDAY AND FRIDAY NIGHTS.
329 AM EDT THU SEP 3 2015 WEAK HIGH PRESSURE AND WEAK STEERING FLOW.
A WEAK UPPER LEVEL TROUGH WILL CONTINUE TO PRODUCE A MEAGER CHANCE OF A FEW AFTERNOON SHOWERS OR STORMS TODAY AND AGAIN FRIDAY.
245 AM EDT THU SEP 3 2015 A COLD FRONT WILL DROP SOUTH THROUGH THE REGION TODAY AND WILL PUSH OFFSHORE THIS EVENING.
AN UPPER LEVEL LOW OVER SOUTHWEST BRITISH COLUMBIA IS EXPECTED TO SAG SOUTH OVER WESTERN WASHINGTON THROUGH TODAY.
341 AM EDT THU SEP 3 2015 WEAK HIGH PRESSURE AND WEAK STEERING FLOW CONTINUES.
SUBSIDENCE ON THE BACK SIDE OF THE AREA OF LOW PRESSURE.
BROAD SURFACE RIDGING WILL KEEP WINDS LIGHT AS WELL.
THE PESKY UPPER LOW THAT HAS BEEN RESPONSIBLE FOR THIS LATEST WET PERIOD APPEARS TO BE HANGING ON OVER THE WRN GULF BUT IS STILL EXPECTED TO FILL IN/WEAKEN THE NEXT COUPLE OF DAYS. THE UPPER RIDGE BUILDING IN FROM THE WEST WILL BE TAKING HOLD. AS FOR THE LONG-LONG RANGE PART OF THE FCST WHERE LAST NIGHTS RUNS WERE SUGGESTING THE PASSAGE OF A COLD FRONT NEXT FRI. HIGH PRESSURE TO THE NORTHEAST WILL KEEP THE SOUTH TO SOUTHEASTERLY FLOW GOING FOR THE COMING WEEK.
AN UPPER LEVEL TROUGH WILL SETTLE INTO THE PACIFIC NORTHWEST LATER TODAY. THE ASSOCIATED COLD FRONT WILL REACH NORTHWEST UTAH FRIDAY NIGHT.
148 AM EDT THU SEP 3 2015 A WEAK TROUGH OF LOW PRESSURE WILL PERSIST OVER THE MID ATLANTIC THROUGH THURSDAY WITH WEAK HIGH PRESSURE CENTERED OVER THE OHIO VALLEY. STRONGER HIGH PRESSURE THEN SLOWLY DROPS DOWN FROM THE NORTHEAST STATES FRIDAY THROUGH THE WEEKEND. MID EVENING IR/WV SAT IMAGERY SHOWING WEAKENING TROUGH ALOFT OVERHEAD AT 01Z/9P. CONVECTION ASSCTD WITH A SERN MOVG TROF HAS MOVED INTO NC ERLY THIS MORNING. WINDS REMAIN AOB 10 KT THIS AFTN INTO TNGT WITH A WEAK TROF OF LO PRES OVER THE AREA.
MEANWHILE OVERNIGHT LOW TEMPS WERE ADJUSTED TO REFLECT THE WARMER TEMPS OVER THE JOHN DAY HIGHLANDS AND UNION/WALLLOWA COUNTIES. A LOW PRESSURE SYSTEM OVER THE E PAC IS CONTINUING TO PUMP MOISTURE INTO THE REGION AND THE CHANCE FOR SHOWERS WILL PERSIST TONIGHT.
904 PM MST TUE JAN 5 2016 THE UPPER TROUGH OVER SERN CO WILL CONTINUE TO SHIFT EAST WITH A SHORT WAVE RIDGE OF HIGH PRESSURE DEVELOPING IN ITS PLACE. WATER VAPOR SHOWING CIRCULATION WITH UPPER TROF ACROSS SOUTHEAST COLORADO THIS AFTERNOON. THERE WILL BE A BIT OF CLOUD ON THE NORTHERN PERIPHERY OF THE LOW ACROSS LINCOLN AND WASHINGTON COUNTIES BUT THAT WOULD BE ABOUT IT. FOR TONIGHT JUST ISOLATED COVERAGE OF SHOWERS IN THE MOUNTAINS WITH SLIGHTLY DRIER AIR ALOFT AND WEAK SUBSIDENCE BEHIND THE TROF. NEXT UPPER LEVEL TROF WILL MOVE INTO WESTERN COLORADO DURING THE AFTERNOON WITH INCREASING MOISTURE AGAIN OVER THE MOUNTAINS. UPPER TROUGH WILL SWING NORTHEAST OVER THE STATE WEDNESDAY NIGHT.
AN UPPER LOW OFFSHORE WILL BRING A LITTLE RAIN TONIGHT INTO WEDNESDAY MORNING. DRIER WEATHER IS IN STORE WEDNESDAY THROUGH THE WEEKEND AS AN UPPER RIDGE MOVES IN. THE UPPER LOW OFFSHORE WILL FADE TONIGHT AS ANOTHER UPPER LOW DEVELOPS OFF OREGON. WHAT APPEARS TO BE THE LAST IN A SERIES OF WEAK SYSTEMS WILL AFFECT MAINLY WESTERN SECTIONS LATE TONIGHT INTO WEDNESDAY MORNING AS ANOTHER TROUGH AXIS SWINGS NORTH OFFSHORE. IT WILL BE A LITTLE WARMER TOO WITH TEMPERATURES RISING INTO THE MID TO UPPER 40S.
1250 AM EST WED JAN 6 2016 HIGH PRESSURE WILL PREVAIL INLAND THROUGH TONIGHT AS A COASTAL TROUGH DEVELOPS OFFSHORE. THE TROUGH WILL LINGER AS IT TRANSFORMS INTO A STATIONARY FRONT THROUGH LATE WEEK.
PERIODS OF LIGHT DRIZZLE/RAIN WILL BE ALSO POSSIBLE FOR MOST OF THE DAY WEDNESDAY AS A COASTAL TROUGH AND ASSOCIATED WARM FRONT LIFTS INLAND.
1235 AM EST WED JAN 6 2016 THE COLDEST AIR OF THE SEASON WILL SLOWLY MODERATE OVER THE NEXT FEW DAYS AS HIGH PRESSURE OVERHEAD SLIDES TO THE EAST.
EXPECT MVFR CONDITION TO DEVELOP TONIGHT INTO WEDNESDAY AS LOW TO MID LEVEL MOISTURE CONTINUES TO INCREASE ACROSS PORTIONS OF THE RIO GRANDE VALLEY AS A WEAK AREA OF LOW PRESSURE DEVELOPS ACROSS NORTHEAST MEXICO. LIGHT RAIN OR DRIZZLE WITH MIST WILL DEVELOP LATE TONIGHT INTO EARLY WED MORNING AS A WEAK AREA OF LOW PRESSURE DEVELOPS ACROSS NORTHEAST MEXICO AND THE SOUTHEAST PORTIONS OF THE CWA PROVIDING WEAK CONVERGENCE ACROSS THE AREA.
/ISSUED 359 PM CST TUE JAN 5 2016/ CRYSTAL CLEAR SKIES ARE UPON MUCH OF THE SOUTHEAST THIS AFTERNOON AS HIGH PRESSURE TO OUR NORTH MAINTAINS CONTROL.
A SPLITTING TROUGH CONTINUES TO APPROACH THE REGION THIS EVENING. THE PREVIOUSLY MENTIONED TROUGH WILL CONTINUE TO SPLIT OVERNIGHT. WITH THE MAIN PORTION OF THE TROUGH SKIRTING THE UTAH/ARIZONA BORDER WEDNESDAY. MODEL GUIDANCE CONTINUES TO DIFFER ON HOW STRONG/HOW MUCH FORCING WILL CROSS NORTHERN UTAH WITH THE NORTHERN REMNANT OF THE TROUGH WEDNESDAY. THE TREND OF MOST OF THE GUIDANCE IS FOR HEAVIER PRECIPITATION ACROSS THE CENTRAL AND SOUTHERN MOUNTAINS AS WELL AS THE EASTERN VALLEYS THROUGH AT LEAST LATE WEDNESDAY MORNING AS THE TROUGH PUSHES EASTWARD ALONG THE UTAH/ARIZONA BORDER. ANOTHER AREA OF PRECIPITATION IS EXPECTED TO DEVELOP ACROSS NORTHERN UTAH AS THE REMNANT TROUGH CROSSES THE AREA LATER WEDNESDAY MORNING INTO WEDNESDAY EVENING. ANOTHER IN THE TRAIN OF TROUGHS WILL APPROACH WEDNESDAY EVENING INTO WEDNESDAY NIGHT.
AN OFFSHORE LONG WAVE TROUGH WILL EJECT SHORT WAVES OVER THE AREA DURING THE NEXT FEW DAYS.
1153 PM CST TUE JAN 5 2016 CURRENTLY A VAST AMOUNT OF DRY AIR BELOW 500 MB IS IN PLACE ACROSS CENTRAL IOWA WITH THE PRIMARY INFLUENCE BEING THE LARGE AREA OF HIGH PRESSURE OVER THE GREAT LAKES. SLEET OR FREEZING RAIN ALL POSSIBLE WITH ONLY MINOR ACCUMULATIONS THRU 12Z. THE SOUTHERLY WINDS AND INCREASING CLOUDS WILL KEEP TEMPERATURES WARMER TONIGHT THAN THE PAST SEVERAL NIGHTS WITH LOWS IN THE MID TO UPPER 20S. FREEZING DRIZZLE.
408 AM EST WED JAN 6 2016 HIGH PRESSURE WILL DOMINATE THE WEATHER OF EASTERN KENTUCKY IN THE SHORT TERM. WITH THE SURROUNDING RIDGES DROPPING INTO THE MID TO UPPER 20S. TODAYS HIGHS WILL BE WARMER THAN YESTERDAY.
1230 AM EST WED JAN 6 2016 HIGH PRESSURE WILL REMAIN IN PLACE IN THE MID-ATLANTIC REGION FOR THE NEXT FEW DAYS.
847 PM PST TUE JAN 5 2016 Another round of light wintry precipitation impacts the region tonight into Wednesday bringing the potential for snow, freezing rain, and rain across the region. Freezing rain could produce icy conditions during the Wednesday morning commute in the Columbia Basin into the Spokane area.
The first in a series of storm systems was pulling away from southwest Kansas during the late night hours, although given how weak this first wave is, it will not do much at all to the low level mass and kinematic fields. Thus, the low clouds and areas of fog and drizzle will not push out very quickly at all. The low level winds will back around to southerly or even slight southeasterly, allowing a resurgence of saturated low level air back into southwest Kansas.
1245 AM EST WED JAN 6 2016 HIGH PRESSURE THROUGH WEDNESDAY.
MIST (FREEZING DRIZZLE) REMAINS AROUND THE AREA. REPORTS OF FREEZING DRIZZLE ACROSS PORTIONS OF WEST CENTRAL MINNESOTA HAVE STARTED COMING IN. FOR TONIGHT WEAK TROUGH WILL CONTINUE TO DRIFT EAST TONIGHT. LEAD WAVE FROM WEST COAST TROUGH WILL LIFT NE WEDNESDAY.
1148 PM EST TUE JAN 5 2016 THE COLDEST AIR OF THE SEASON WILL SLOWLY MODERATE OVER THE NEXT FEW DAYS AS HIGH PRESSURE OVERHEAD SLIDES TO THE EAST.
443 AM EST WED JAN 6 2016 COLD CANADIAN HIGH PRESSURE BUILDS ACROSS THE AREA THROUGH TODAY.
355 AM CST WED JAN 6 2016 THE MAIN ISSUES IN THE SHORT TERM ARE FOG, LOW CLOUDS, AND CHANCES FOR LIGHT SNOW AND FREEZING RAIN. THICK CLOUD COVER WILL LIMIT DAYTIME HEATING THUS KEEPING TEMPERATURES GENERALLY IN THE LOW 20S. AT THIS TIME IT APPEARS THE JAMES VALLEY STANDS THE BEST CHANCE AT SEEING SOME LIGHT PRECIPITATION TONIGHT AS AN INVERTED TROUGH NOSES INTO THE EASTERN DAKOTAS. THIS COULD PRODUCE SOME LIGHT FREEZING DRIZZLE TONIGHT INTO TOMORROW.
300 AM EST WED JAN 6 2016 HIGH PRESSURE WILL DOMINATE THE WEATHER OF EASTERN KENTUCKY IN THE SHORT TERM. WITH THE SURROUNDING RIDGES DROPPING INTO THE MID TO UPPER 20S. TODAYS HIGHS WILL BE WARMER THAN YESTERDAY.
DIFFICULT TO TELL THIS TIME OF NIGHT IF ANY OF THE LOWERED VIS IS LEADING TO FREEZING DRIZZLE. WILL CONTINUE TO KEEP THE PATCHY FOG AND FREEZING DRIZZLE MENTION THROUGH THE REST OF THE MORNING.
317 AM EST WED JAN 6 2016 HIGH PRESSURE WILL REMAIN IN PLACE IN THE MID-ATLANTIC REGION FOR THE NEXT FEW DAYS.
/ISSUED 232 PM CST TUE JAN 5 2016/ COLD HIGH PRESSURE THAT BROUGHT SUBFREEZING TEMPERATURES TO THE REGION OVER THE PAST SEVERAL NIGHTS CONTINUES TO PUSH EAST WITH WINDS ACROSS THE REGION BECOMING EAST TO SOUTHEAST. CLOUDS TO KEEP TEMPERATURES SLIGHTLY WARMER THAN PREVIOUS OVERNIGHT PERIODS WITH LOW TEMPERATURES FORECAST TO FALL INTO THE MID 30S OVERNIGHT.
258 AM CST WED JAN 6 2016 Models show low pressure over the central Rockies moving very slowly east then northeast through the end of the work week.
425 AM EST WED JAN 6 2016 HIGH PRESSURE OVERHEAD WILL SLIDE ONLY SLOWLY TO THE EAST OVER THE NEXT COUPLE OF DAYS. A WARM FRONT WILL BRING LIGHT PRECIPITATION LATE THIS WEEK. HIGH PRESSURE FIRMLY IN CONTROL.
1254 AM EST WED JAN 6 2016 THE COLDEST AIR OF THE SEASON WILL SLOWLY MODERATE OVER THE NEXT FEW DAYS AS HIGH PRESSURE OVERHEAD SLIDES TO THE EAST.
1155 PM EST TUE JAN 5 2016 DEPARTING AREA OF HIGH PRESSURE WILL HOLD ENOUGH INFLUENCE OVER THE REGION TODAY TO KEEP VFR CONDITIONS THROUGH THE FORECAST PERIOD.
1216 AM MST WED JAN 6 2016 ISSUED UPDATE TO EXTEND AREAL COVERAGE OF PATCHY FREEZING FOG WEST INTO PORTIONS OF EASTERN COLORADO FOR THE REST OF THE OVERNIGHT. AT THE SURFACE LEE TROUGH IS IN PLACE ACROSS EASTERN COLORADO WITH TROUGH AXIS EXTENDING NORTHEAST ACROSS THE NW CORNER OF OUR CWA. INDICATING POSSIBLE FREEZING DRIZZLE DEVELOPMENT IN OUR EASTERN CWA (TAKING INTO ACCOUNT SURFACE TEMPS). DURING AN EARLIER UPDATE I ADDED FREEZING FOG AND DRIZZLE MENTION AND THERE IS LITTLE REASON AT THIS POINT TO STRAY FROM THIS FORECAST. COVERAGE AND LOCATION OF BEST CHANCE OF FREEZING DRIZZLE ARE STILL UNCERTAIN. COLD PATTERN WILL BE IN PLACE WITH A DEEP TROUGH CARVED ACROSS THE CENTRAL CONUS AROUND A CUT OFF LOW NEAR THE GREAT LAKES.
947 PM PST TUE JAN 5 2016 Another round of light wintry precipitation impacts the region tonight into Wednesday bringing the potential for snow, freezing rain, and rain across the region. Freezing rain could produce icy conditions during the Wednesday morning commute in the Columbia Basin into the Spokane area.
1045 PM MST TUE JAN 5 2016 UPDATED AVIATION LIGHT FREEZING RAIN IS OCCURRING NEAR FORT BELKNAP THIS EVENING. HAVE INCREASED POPS TO SLIGHT CHANCE AND INCLUDED FREEZING RAIN IN THE FORECAST. THIS FREEZING RAIN SHOULD DIMINISH BY MIDNIGHT.
300 AM EST WED JAN 6 2016 THE SHORT TERM PERIOD BEGINS WITH STRONG HIGH PRESSURE ANCHORED OVER THE MID ATLANTIC STATES PROVIDING AN EASTERLY FLOW REGIME TO THE LOCAL AREA. DO EXPECT SOME MARGINAL TEMP RECOVERY INTO THE OVERNIGHT HOURS WITH LOWS IN THE LOWER 30S AS OPPOSED TO THE 20S SEEN THE LAST COUPLE OF NIGHTS.
A deep trof digging in over the western half of the CONUS puts the Midwest in southwesterly flow aloft, keeping the weak warming trend through the end of the week.
SOME DRIER AIR IN THE LOW-LEVELS NEAR AUS WILL DELAY PRECIPITATION REACHING THE GROUND UNTIL THE EARLY MORNING HOURS.
UPPER AND SURFACE RIDGING WILL CONTINUE TO PRODUCE VFR FLIGHT CONDITIONS AND LIGHT/CALM WINDS AT ALL TAF SITES THROUGH THE FORECAST. CHATTANOOGA AIRPORT, TN 24 46 30 53 / 0 0 10 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 20 45 28 52 / 0 0 0 10 OAK RIDGE, TN 22 45 28 52 / 0 0 0 10 TRI CITIES AIRPORT, TN 15 45 21 53 / 0 0 0 10.
933 PM MST TUE JAN 5 2016 LIGHT FREEZING RAIN IS OCCURRING NEAR FORT BELKNAP THIS EVENING. HAVE INCREASED POPS TO SLIGHT CHANCE AND INCLUDED FREEZING RAIN IN THE FORECAST. THIS FREEZING RAIN SHOULD DIMINISH BY MIDNIGHT.
THERE COULD BE SOME PATCHY FREEZING DRIZZLE/FLURRIES LATER TONIGHT. STRONG SOUTHERLY FLOW AHEAD OF A WEAK COLD FRONT MOVING ACROSS THE DAKOTAS THIS AFTERNOON HAS PRODUCED STRONG SOUTHWEST WINDS OVER THE FORECAST AREA. THIS SURGE OF MOISTURE ALSO ASSOCIATED WITH A GRADUALLY INTENSIFYING WARM FRONT/BAROCLINIC ZONE AT 850MB DRAPED ACROSS CENTRAL MINNESOTA AND NORTHERN WISCONSIN DURING THE DAY.
A RIDGE OF HIGH PRESSURE BOTH SURFACE AND ALOFT WILL KEEP CONDITIONS DRY WITH ONLY HIGH LEVEL CLOUDS ANTICIPATED.
1116 PM CST TUE JAN 5 2016 HIGH PRESSURE WILL MOVE EAST OF ARKANSAS TONIGHT AND WEDNESDAY. /ISSUED 907 PM CST TUE JAN 5 2016/ HIGH PRESSURE WILL CONTINUE OVERNIGHT.
THE COLD FRONT WILL BE WELL BEHIND THE STRONG SHORT WAVE AND THAT IS A GOOD THING. THERE WILL NOT BE A LOT OF DYNAMIC JET INFLUENCE ACROSS THE INTERFACE OF THIS COLD FRONT SO SVR WX IS ONCE AGAIN NOT EXPECTED AS THE STRONG COLD FRONT MOVES THROUGH FRI NIGHT AND SAT MORNING.