Aikyam-Lab/Synoptic-Bench huggingface dataset:
/ISSUED 247 PM EDT THU APR 9 2015/ A RIDGE OF HIGH PRESSURE WILL CONTINUE TO DOMINATE THE WEATHER ACROSS THE REGION TONIGHT BRINGING DRY CONDITIONS TO THE REGION. THIS AREA OF HIGH PRESSURE WILL BEGIN TO SHIFT OFF TO THE EAST ON FRIDAY. TEMPERATURES ON FRIDAY AFTERNOON WILL REMAIN ON THE WARM SIDE AS THEY RISE INTO THE MID 80S ACROSS BOTH COASTS TO THE LOWER 90S ACROSS THE INTERIOR.
653 PM CDT THU APR 9 2015 12Z UA ANALYSIS HAS AN 850MB LOW NEAR KOAX WITH A WARM FRONT INTO SOUTHERN WISCONSIN. THE 850MB COLD FRONT RAN FROM THE LOW INTO THE BIG BEND OF TEXAS. THE WARM FRONT RAN FROM THE LOW NEAR KCID INTO NORTHERN ILLINOIS AND THEN EAST ALONG THE MICHIGAN/INDIANA LINE. THE COLD FRONT RAN FROM THE SYNOPTIC LOW NEAR KLWD INTO NORTH TEXAS. THE SYNOPTIC LOW SHOULD BE CLOSE TO KDBQ JUST PRIOR TO SUNSET WITH THE COLD FRONT ALONG THE MISSISSIPPI RIVER. THE MAIN SEVERE THREAT WILL BE ALONG/AHEAD OF THE COLD FRONT.
BUT THERE ARE LIKELY A FEW SLICK SPOTS OUT THERE WITH TEMPS IN NORTHWEST WISCONSIN HOVERING AROUND OR JUST ABOVE THE FREEZING MARK. TEMPERATURES RANGING FROM NEAR-FREEZING IN NORTHWEST WISCONSIN TO IN THE MID 50S ACROSS NORTH CENTRAL MINNESOTA. MILD DESPITE A COLD FRONT PASSAGE LATE TODAY.
SKIES ARE CLEARING EVERYWHERE BILLINGS EAST PER BUILDING HIGH PRESSURE ALOFT. TOMORROW WILL BE WARMER ACROSS THE CWA WITH HIGHS INTO THE 60S. THE WEAK RIDGE OVER THE AREA TODAY. WILL GIVE WAY TO A WEAK TROUGH TOMORROW. AS THIS TROUGH MOVES OVER THE SOUTHWEST MOUNTAINS.
SO WILL KEEP POPS FAIRLY LOW UNTIL THE MAIN UPPER LOW COMES DOWN LATER TONIGHT. FOR NOW WILL KEEP ANY FREEZING PRECIP OUT BUT WILL TAKE ANOTHER LOOK AT THINGS AS FURTHER MODEL RUNS TRICKLE IN. UPPER LOW FORECASTED BY ALL MODELS TO PROPAGATE SOUTHWARD JUST EAST OF THE VALLEY TONIGHT. HIGH PRESSURE INFLUENCES THE REGION FRIDAY INTO FRIDAY NIGHT.
722 PM CDT Thu Apr 9 2015 /00Z TAFS/ VFR conditions prevail across the area with a cold front moving south through the area. At 3 PM, a cold front stretched from southern Brown County (Brookesmith area) to Ozona. For tomorrow, the aforementioned front will head back north as a warm front, with southeasterly surface winds developing in it's wake. An upper low approaching Baja California will allow southwest winds aloft to prevail through the period. PED (Friday Night through Thursday) By Friday night an upper low will be situated west of the northern Baja Peninsula with the upper flow aloft backing more to the southwest over the forecast area in response.
THE DIRECT CIRCULATION WITH THE JET WILL ENHANCE THE FRONTO-GENETIC FORCING ALONG THE PRE-FRONTAL TROUGH. CHATTANOOGA AIRPORT, TN 66 72 51 75 / 80 80 10 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 65 71 48 70 / 80 80 10 0 OAK RIDGE, TN 64 71 46 71 / 80 80 10 0 TRI CITIES AIRPORT, TN 61 72 44 67 / 60 80 10 0.
A COLD FRONT EXTENDING FROM SOUTHWEST ARKANSAS TO NORTHEAST TEXAS WILL CONTINUE TO MOVE SOUTHEAST OVERNIGHT. /ISSUED 939 PM CDT THU APR 9 2015/ A BKN BAND OF STRONG TO SVR STORMS CONTINUES TO MARCH EAST ACRS NRN LA THIS EVENING AHEAD OF A COLD FRONT. SURFACE ANALYSIS INDICATING APPROACHING NE-SW ORIENTED COLD FRONT STRETCHING ACROSS WESTERN OKLAHOMA AND THROUGH CENTRAL TEXAS. TEMPERATURES HAVE WARMED AGAIN INTO THE LOW TO MID 80S.
/ISSUED 943 PM CDT THU APR 9 2015/ 9 PM CDT SURFACE MAP SHOWED A PACIFIC COLD FRONT THROUGH NORTHWEST AR. /ISSUED 241 PM CDT THU APR 9 2015/ SEVERE WEATHER EXPECTED TONIGHT AS A COLD FRONT WILL MOVE THROUGH THE MIDSOUTH OVERNIGHT. TEMPERATURES HAVE WARMED INTO THE LOWER 80S ACROSS MUCH OF THE AREA. A LINE OF THUNDERSTORMS IS DEVELOPING ALONG THE COLD FRONT. HIGH PRESSURE WILL BEGIN TO BUILD INTO THE AREA FROM THE NORTH. TEMPERATURES WILL BE COOLER WITH HIGHS FROM THE UPPER 60S TO AROUND 70 DEGREES.
THE LOW CLOUDS HAVE CLEARED OVER THE MEDFORD CWA THIS AFTERNOON. A WEAK RIDGE WILL BUILD OVER THE AREA INTO TONIGHT. FRIDAY WILL BE DRY AND WARMER OVER INLAND AREAS WITH HIGH TEMPERATURES 5-10 DEGREES ABOVE NORMAL.
AS WELL AS REMOVING SOME COUNTIES FROM SVR WATCH #44 BEHIND THE COLD FRONT. DO THINK AN ISOLATED STRONG TO SVR STORM COULD BE SEEN ALONG AND AHEAD OF THE ADVANCING COLD FRONT. /ISSUED 640 PM CDT THU APR 9 2015/ CONVECTION CONTINUES ACROSS THE AREA IN ADVANCE OF AN APPROACHING COLD FRONT.
MODERATE TO FRESH BREEZES WILL PERSIST FROM THE EAST THANKS TO THE PERSISTENT HIGH PRESSURE ALIGNED FROM THE WESTERN NORTH ATLANTIC TO OVER NORTH/CENTRAL FLORIDA. THE HIGH TEMPERATURE IN KEY WEST WAS 68 DEGREES.
The upper trough and associated cold front will swing to the east of the area tonight.
HIGH LEVEL CLOUD COVER WILL BE ON THE INCREASE GOING INTO THIS AFTERNOON AS A 700MB SHORT WAVE TROUGH LIFTS UP INTO THE REGION. THE GENERAL CONSENSUS APPEARS TO BE THAT SATURATION WILL OCCUR AFTER MIDNIGHT ON TOWARD DAYBREAK AS THE LOW/MID LEVEL TROUGH APPROACHES FROM THE SOUTHWEST. THE OUTLIER NAM CONTINUES TO HAVE THE FURTHEST NORTH TRACK AND WOULD MEAN LITTLE TO NO SNOW FOR THE AREA AND MORE OF A MIX/FREEZING DRIZZLE SCENARIO DUE TO A LOSS OF ICE IN THE WARM SECTOR. SO THERE IS A SMALL POTENTIAL FOR SOME SLEET/FREEZING DRIZZLE IN THAT AREA TUESDAY MORNING. ONCE THE LOW/COLD FRONT MOVE THROUGH TUESDAY AFTERNOON.
451 AM CST MON MAR 2 2015 NORTH WINDS ALONG WITH AREAS OF FOG AND LIGHT RAIN ARE FOUND ACROSS SOUTHEAST TEXAS EARLY THIS MORNING WITH 3 AM TEMPERATURES RANGING FROM THE LOWER TO MID 40S NORTH TO THE LOWER 50S AT THE COAST.
522 AM CST MON MAR 2 2015 PRESSURE FALLS ARE BEGINNING TO SHOW UP IN THE LEE OF THE NORTHERN ROCKIES AHEAD OF THE IMPENDING LOW PRESSURE SYSTEM. HOWEVER THEY HAVE BACKED OFF AND SOUNDINGS SUGGEST THE LOWEST LEVELS WILL BE TOO DRY.
/ISSUED 316 AM CST MON MAR 2 2015/ FRONTAL BOUNDARY FROM NORTHERN GULF COAST TO NEAR LAFAYETTE AND BATON ROUGE TO SHIFT NORTHWEST THIS AFTERNOON REPLACING THE COLD AIRMASS ACROSS THE ARKLATEX WITH A MUCH WARMER AIRMASS.
LESS PRECIPITATION TODAY AS SOUTHEASTERN TEXAS FALLS ON THE MORE SUBSIDENT WESTERN SIDE OF A WESTERN GULF TROUGH AXIS. AS A SURFACE WARM FRONT ADVANCES EASTWARD. /ISSUED 451 AM CST MON MAR 2 2015/ NORTH WINDS ALONG WITH AREAS OF FOG AND LIGHT RAIN ARE FOUND ACROSS SOUTHEAST TEXAS EARLY THIS MORNING WITH 3 AM TEMPERATURES RANGING FROM THE LOWER TO MID 40S NORTH TO THE LOWER 50S AT THE COAST.
909 AM CST MON MAR 2 2015 BREEZY SOUTHERLY WINDS WILL DEVELOP TODAY AHEAD OF A COLD FRONT ENTERING WESTERN NORTH DAKOTA. UNDER SUNNY SKIES TEMPERATURES SHOULD EASILY CLIMB ABOVE FREEZING SOUTH AND WEST OF THE MISSOURI RIVER. A COLD FRONT WILL SWEEP THROUGH NORTH DAKOTA AFTER SUNSET TONIGHT.
HIGH PRESSURE WILL BUILD IN TONIGHT GIVING US ANOTHER CLEAR AND COLD NIGHT.
330 AM PST MON MAR 2 2015 A COLD UPPER LOW WILL SLOWLY THROUGH SOUTHERN CALIFORNIA TODAY BRINGING PERIODS OF SHOWERS AND MOUNTAIN SNOW DOWN TO LOWER MOUNTAIN ELEVATIONS.
1028 AM EST MON MAR 2 2015 HIGH PRESSURE WILL SLOWLY BUILD INTO THE REGION TODAY.
/ISSUED 318 AM EST MON MAR 2 2015/ A DEEP LAYER RIDGE, WITH H5 HEIGHTS NEAR 591DM, WILL BE THE MOST IMPACTFUL WEATHER FEATURE THIS WEEK, AS IT MOVES FROM THE SOUTHWEST GULF OF MEXICO, TO THE WESTERN ATLANTIC BY LATE WEEK. A CLOSED UPPER LOW, DIVING INTO BAJA CALIFORNIA EARLY THIS WEEK, WILL CARVE A DEEP TROUGH THROUGH THE FOUR CORNERS REGION. HOWEVER, THIS TROUGH WILL HAVE LITTLE SUCCESS MOVING EAST AND ALTERING THE PATTERN OVER SOUTH FLORIDA, UNTIL PERHAPS THIS WEEKEND.
THE MID LEVELS OF THE ATMOSPHERE DRY OUT SIGNIFICANTLY WITH BREAKS IN THE CLOUDS AND HIGHS IN THE LOWER 70S. BIG CHANGES ARE COMING BY MID WEEK AS STRONG COLD FRONT PUSHES THROUGH THE AREA AND ANOTHER WINTER PRECIPITATION TYPE EVENT UNFOLDS.
637 AM EST MON MAR 2 2015 LOW PRESSURE SOUTH OF NOVA SCOTIA WILL RAPIDLY MOVE OFF TO THE NORTHEAST TODAY. AN ARCTIC COLD FRONT WILL CROSS THE AREA THIS EVENING. HIGH PRESSURE WILL BUILD TOWARD THE AREA TONIGHT AND TUESDAY FROM THE WEST.
Fog and freezing fog are also possible this morning. However, w/temps only near freezing (as opposed to well-blo the last few days), we'll continue to handle these hazards in the HWO and with an SPS. Although sfc flow will veer to SE later today, we're not betting on things improving appreciably, and so have stuck to the lower end of guidance on temps. An upper trough making landfall on SoCal will begin sending disturbances thru SW flow aloft as soon as tonight, favoring isolated -SHRA omtns out west. Therefore, we again prefer to stay on the lower end of guidance temps. Meanwhile, the west coast trough will dig down to Baja, open, and move thru Sonora towards the region.
624 AM EST MON MAR 2 2015 A WEAK COLD FRONT WILL EXIT THROUGH EARLY.
A STRONG RIDGING UPPER JET WILL INTENSIFY ACROSS THE UPPER MIDWEST TODAY, INTENSIFYING THE SOUTHWEST FLOW ALOFT ACROSS THE SOUTHERN ROCKIES INTO THE HIGH PLAINS. OVERCAST SKIES WILL LIKELY IMPEDE INSOLATION, KEEPING TEMPERATURES FROM CLIMBING MUCH ABOVE THE FREEZING POINT ON THE LOWER PLAINS OF CENTRAL KANSAS HOWEVER, WARMER TEMPERATURES INTO THE 40S MAY BE POSSIBLE IN THE FAR SOUTHWEST SECTIONS. THIS WILL PUSH A COLD FRONT SOUTH ACROSS WESTERN KANSAS TUESDAY MORNING. BY TUESDAY NIGHT THE UPPER TROUGH BEGINS TO MOVE OUT ACROSS THE CENTRAL PLAINS.
THIS BOUNDARY FINALLY LIFTS NORTH AS A WARM FRONT LATE MONDAY NIGHT LEAVING A LIGHT SOUTHEASTERLY FLOW LOADED WITH MOISTURE AND ADVECTING OVER COOLER NEAR SHORE WATERS IDEAL FOR SEA FOG.
908 AM EST MON MAR 2 2015 LOW PRESSURE SOUTH OF NOVA SCOTIA WILL RAPIDLY MOVE OFF TO THE NORTHEAST TODAY. AN ARCTIC COLD FRONT WILL CROSS THE AREA THIS EVENING. HIGH PRESSURE WILL BUILD TOWARD THE AREA TONIGHT AND TUESDAY FROM THE WEST.
HIGH PRESSURE WILL PROGRESS EWD ACROSS SRN WI AND IL FOR TODAY WITH HIGH CLOUDS INCREASING LATE THIS AFTERNOON AS WARM ADVECTION INCREASES ALOFT. THE BEST CHANCE FOR FREEZING RAIN WOULD BE LATE TUE MORNING IN FAR SOUTHEAST BEFORE THE SURFACE TEMPS RISE INTO THE LOWER/MID 30S. SOME MODEL SOUNDINGS SHOW THE POTENTIAL FOR FREEZING DRIZZLE BY MID TUE AFTERNOON. THE COLD FRONT WILL ARRIVE AROUND 6 PM TUE WITH WINDS SHIFTING TO THE WNW AND INCREASING THROUGH THE NIGHT.
09Z MSAS ANALYSIS PLACES COASTAL TROUGH JUST EAST OF THE OFFSHORE GULF WATERS. TEMPERATURES WILL NOT CLIMB MUCH TODAY AS HIGHS WILL ONLY BE IN THE LOWER TO MIDDLE 50S UNDER MOSTLY CLOUDY TO OVERCAST SKIES. SUFFICIENT MOISTURE WILL REMAIN THE LOWEST LEVELS LEADING TO INTERMITTENT LIGHT RAIN AND DRIZZLE AGAIN TODAY. COASTAL TROUGH FINALLY SHOULD BEGIN TO LIFT NORTHWARD ON TUESDAY WITH S/SE WINDS RETURNING TO SOUTH TEXAS.
UNDER SUNNY SKIES TEMPERATURES SHOULD EASILY CLIMB ABOVE FREEZING SOUTH AND WEST OF THE MISSOURI RIVER. A COLD FRONT WILL SWEEP THROUGH NORTH DAKOTA AFTER SUNSET TONIGHT.
SHOULD SEE AN INCREASE IN NORTHWEST TO NORTH WINDS THIS AFTERNOON AND EVENING ASSOCIATED WITH A WEAK, MOSTLY DRY COLD FRONT.
602 AM EST MON MAR 2 2015 AN UPPER LEVEL TROUGH WILL MOVE ACROSS THE EASTERN GREAT LAKES THIS MORNING. OTHERWISE HIGH PRESSURE WILL BE BUILDING IN FROM THE WEST TODAY. THE HIGH WILL MOVE EAST TONIGHT. A STRONG AREA OF LOW PRESSURE WILL DEVELOP OVER THE CENTRAL PLAINS MONDAY NIGHT AND IS EXPECTED TO PASS TO THE NORTH OF LAKE ERIE ON TUESDAY NIGHT WITH A COLD FRONT MOVING ACROSS THE REGION. THE GFS MOS GUIDANCE SEEMS WAY TOO COLD WITH THE HIGH MOVING EAST OVERNIGHT AND THE CLOUDS AND THE WIND INCREASING. FREEZING RAIN AND SLEET WILL LAST BEFORE CHANGING TO ALL RAIN.
411 AM CST MON MAR 2 2015 PRESSURE FALLS ARE BEGINNING TO SHOW UP IN THE LEE OF THE NORTHERN ROCKIES AHEAD OF THE IMPENDING LOW PRESSURE SYSTEM. HOWEVER THEY HAVE BACKED OFF AND SOUNDINGS SUGGEST THE LOWEST LEVELS WILL BE TOO DRY.
HIGH PRESSURE BUILDS INTO THE REGION TONIGHT AND TUESDAY FOR DRIER WEATHER.
A WARM FRONT WILL DEVELOP. THE RAIN CHANCE WILL CONTINUE TO TAPER DOWN AS THE COLD FRONT SETTLES SOUTH AND EAST OF THE AREA THIS MORNING. TEMPS ARE AROUND FREEZING ALONG THE NORTH TIER. BUT NO MEASURABLE PRECIP IS FALLING IN THE FREEZING TEMPS. THE FRONT WILL RETURN NORTHWARD AS A WARM FRONT TONIGHT INTO TUESDAY. A LOW PRESSURE SYSTEM WILL MOVE FROM THE MID MS VALLEY INTO THE GREAT LAKES REGION AS A TRAILING COLD FRONT SWEEPS INTO MID TN.
TEMPERATURES WILL BE WARMER TODAY WITH 70S INLAND AND 60S NEAR THE COAST.
521 AM EST MON MAR 2 2015 HIGH PRESSURE WILL SLOWLY BUILD INTO THE REGION TODAY.
A LARGE HIGH PRESSURE CELL HAS SHIFTED EAST OVER THE NORTH ATLANTIC. THE NEXT LARGE CONTINENTAL HIGH PRESSURE SYSTEM IS MIGRATING ACROSS THE MID- MISSISSIPPI RIVER VALLEY.
430 AM MST MON MAR 2 2015 THE LOCAL AREA WILL REMAIN MOSTLY DRY THROUGH TUESDAY UNDER THE INFLUENCE OF A LARGE RIDGE CENTERED OVER THE NORTHERN GULF OF MEXICO. A FEW WEAK WAVES ROTATING AROUND THE RIDGE WILL SKIRT THE WESTERN AND NORTHERN FRINGES WITH SLIGHT CHANCES OF FLURRIES/LIGHT SNOW.
SKIES RANGE FROM MOSTLY CLOUDY IN THE LOWER KEYS TO MOSTLY CLEAR ALONG THE UPPER KEYS. WITH TEMPERATURES IN THE LOWER TO MID 70S ALONG THE ISLAND CHAIN. A WESTERN ATLANTIC RIDGE LIES WELL EAST OF THE EASTERN SEABOARD. BUT WITH ANOTHER LARGE AREA OF HIGH PRESSURE CENTERED IN THE CENTRAL PLAINS.
520 AM CST Mon Mar 2 2015 High pressure centered from north central Missouri through northwest Iowa will drift over the area today bringing a quiet weather scene to the forecast area. Will tend to follow the cooler guid today with little to no low level warm advection expected until the high shifts further off to the east, which won't be until tonight.
238 AM PST MON MAR 2 2015 A TROUGH OVER THE REGION WILL INCREASE CLOUD COVER TODAY AND WILL PROVIDE CHANCES FOR SNOW SHOWERS ESPECIALLY ALONG THE SIERRA.
641 AM EST MON MAR 2 2015 AN UPPER LEVEL TROUGH WILL MOVE ACROSS THE EASTERN GREAT LAKES THIS MORNING. OTHERWISE HIGH PRESSURE WILL BE BUILDING IN FROM THE WEST TODAY. THE HIGH WILL MOVE EAST TONIGHT. A STRONG AREA OF LOW PRESSURE WILL DEVELOP OVER THE CENTRAL PLAINS MONDAY NIGHT AND IS EXPECTED TO PASS TO THE NORTH OF LAKE ERIE ON TUESDAY NIGHT WITH A COLD FRONT MOVING ACROSS THE REGION. THE GFS MOS GUIDANCE SEEMS WAY TOO COLD WITH THE HIGH MOVING EAST OVERNIGHT AND THE CLOUDS AND THE WIND INCREASING. FREEZING RAIN AND SLEET WILL LAST BEFORE CHANGING TO ALL RAIN.
TROUGH MOVING IN FROM THE NORTH WILL MERGE WITH MOISTURE COMING UP FROM THE SOUTH TONIGHT.
606 AM EST MON MAR 2 2015 HIGH PRESSURE BRINGS DRIER WEATHER TODAY. A WARM FRONT TUESDAY. FOLLOWED BY A COLD FRONT TUESDAY NIGHT.
1056 AM EST MON MAR 2 2015 VERY STABLE CONDITIONS CONTINUE ACROSS THE REGION WITH HIGH PRESSURE REMAINING IN CONTROL AND MODERATE EASTERLY WINDS. /ISSUED 318 AM EST MON MAR 2 2015/ A DEEP LAYER RIDGE, WITH H5 HEIGHTS NEAR 591DM, WILL BE THE MOST IMPACTFUL WEATHER FEATURE THIS WEEK, AS IT MOVES FROM THE SOUTHWEST GULF OF MEXICO, TO THE WESTERN ATLANTIC BY LATE WEEK. A CLOSED UPPER LOW, DIVING INTO BAJA CALIFORNIA EARLY THIS WEEK, WILL CARVE A DEEP TROUGH THROUGH THE FOUR CORNERS REGION. HOWEVER, THIS TROUGH WILL HAVE LITTLE SUCCESS MOVING EAST AND ALTERING THE PATTERN OVER SOUTH FLORIDA, UNTIL PERHAPS THIS WEEKEND.
SEA FOG WILL BE THE BIGGEST CONCERN OVER THE WATERS THE NEXT FEW DAYS AS WARM, MOIST AIR MOVES OVER THE COOLER GULF WATERS.
However, w/temps only near freezing (as opposed to well-blo the last few days), we'll continue to handle these hazards in the HWO and with an SPS. Although sfc flow will veer to SE later today, we're not betting on things improving appreciably, and so have stuck to the lower end of guidance on temps. An upper trough making landfall on SoCal will begin sending disturbances thru SW flow aloft as soon as tonight, favoring isolated -SHRA omtns out west. Therefore, we again prefer to stay on the lower end of guidance temps. Meanwhile, the west coast trough will dig down to Baja, open, and move thru Sonora towards the region.
AN UPPER RIDGE WITH ITS AXIS OUT NEAR 140W WILL OTHERWISE BE THE MAIN FEATURE NEAR OUR FORECAST AREA MOST OF THIS WEAK. THE MODELS HAVE BEEN VACILLATING ON THE TRACK AND STRENGTH OF A SYSTEM RIDING OVER THE UPPER RIDGE LATER IN THE WEEK. OTHERWISE THE UPPER RIDGE WITH ITS AXIS OUT NEAR 140W WILL BE THE DOMINANT FEATURE FOR THE REMAINDER OF THIS WEEK.
323 AM PST MON MAR 2 2015 A LOW PRESSURE SYSTEM WILL BRING PERIODS OF SHOWERS AND ISOLATED THUNDERSTORMS INTO THIS EVENING WITH A CHANCE OF SHOWERS FOR COASTAL AREAS TONIGHT INTO TUESDAY MORNING AND FOR THE MOUNTAINS TUESDAY AFTERNOON.
CHATTANOOGA AIRPORT, TN 46 43 55 52 / 70 70 80 80 KNOXVILLE MCGHEE TYSON AIRPORT, TN 45 39 54 51 / 50 40 80 80 OAK RIDGE, TN 47 38 54 50 / 40 40 80 80 TRI CITIES AIRPORT, TN 46 33 52 49 / 30 20 70 70.
UPPER TROUGH WILL MOVE INTO THE NW CONUS TOMORROW. AND THIS FEATURE WILL AID PUSHING THE NEXT COLD FRONT THROUGH THE REGION TOMORROW NIGHT.
639 AM EST MON MAR 2 2015 HIGH PRESSURE WILL BUILD INTO THE AREA TODAY AND MOVE OFF TO THE EAST TONIGHT. A WARM FRONT WILL LIFT ACROSS THE REGION TUESDAY MORNING WHICH WILL BE FOLLOWED BY A STRONG COLD FRONT TUESDAY AFTERNOON AND EVENING.
UPPER LEVEL RIDGING WILL BEGIN TO DEVELOP OVER THE WEST COAST ON TUESDAY AND THEN PERSIST INTO THIS COMING WEEKEND. THE DEVELOPING RIDGE WILL RESULT IN DRY CONDITIONS AND A GRADUAL WARMING TREND THROUGH THE WEEK. CONSIDERING THE HIGH UNCERTAINTY OF THE DEPARTING CLOUD COVER HAVE OPTED TO HOLD OFF ON ANY FREEZE/FROST PRODUCTS FOR TONIGHT.
SWEEPING SEWD INTO THE CNTRL PLAINS WILL ALLOW FOR PCPN CHANGE FROM LIQUID/FREEZING/FROZEN THROUGH TUESDAY MORNING. INITIAL ENVIRONMENTAL CONDITIONS BE SUPPORTIVE OF A DRIZZLE/FREEZING DRIZZLE TYPE EVENT THIS EVENING BEFORE COLUMN SATURATION AND DEEPENING CAA COMES INTO PLAY AFTER MIDNIGHT.
503 AM MST MON MAR 2 2015 IN THE UPPER ATMOSPHERE THIS MORNING THE COLDER NORTHERN TROUGH WAS BEGINNING TO PHASE WITH THE CALIFORNIA LOW THAT WILL BEGIN ITS PUSH EASTWARD. AT THE SURFACE A WARM FRONT SLOWLY LIFTED INTO NE UTAH- NW COLORADO OVERNIGHT AND HAS STALLED THERE UNTIL IT IS OVERRUN BY THE COLD AIR MASS THIS AFTERNOON. THE LAST SIGNIFICANT TROUGH OF THIS SERIES OF SYSTEMS WILL TRAVEL OVER THE AREA FROM NW TO SE TUE NIGHT. WITH MUCH DRIER AND COOLER AIR MOVING IN BEHIND IT WED AND THU. WENT BELOW GUIDANCE FOR MAX AND MIN TEMPS TUE THROUGH THU NIGHT AS THE COOLER THAN NORMAL CONDITIONS WILL CONTINUE. A STRONG RIDGE WILL DEVELOP OVER THE WESTERN U.
310 AM PST MON JAN 26 2015 A LOW PRESSURE SYSTEM FROM THE SOUTHWEST WILL BRING PERIODS OF SHOWERS THROUGH THIS EVENING.
611 AM EST MON JAN 26 2015 LOW PRESSURE SYSTEM TRACKING BY TO OUR NORTH AND NORTHEAST WILL PULL AWAY.
MAINLY AROUND MIDDAY WHEN ANOTHER COLD FRONT WILL PASS OVER THE KEYS.
803 AM EST MON JAN 26 2015 PERIODS OF SNOW WILL CONTINUE INTO TONIGHT AS LOW PRESSURE DEVELOPS TOWARD THE COAST. AS UPPER TROUGH SHIFTS EASTWARD.
THE POTENT UPPER TROF THAT WILL SOON HELP CREATE THE NORTHEAST U. THE MAV AND MET ARE QUITE A BIT COOLER THAN THE PREVIOUS FORECAST AND HAVE HAD TO CUT TEMPS ACROSS MUCH OF THE AREA.
THE RIDGE OF HIGH PRESSURE WILL DRIFT FROM NORTHERN CALIFORNIA TO THE FOUR CORNERS REGION TODAY.
448 AM CST MON JAN 26 2015 (Today and Tonight) The warming trend will continue across our area today and tonight, as the upper ridge over New Mexico and the Rio Grande Valley shifts east into Texas. With mostly sunny skies and west winds, temperatures will reach the lower to mid 70s for highs this afternoon. Expect overnight lows to be mostly in the upper 30s to lower 40s, with a few mid 30s in the low-lying areas and river valleys of our southern counties.
IN ADDITION, EXPECT SOME PATCHES OF -FZDZSNPL AT CSV, AS SURFACE TEMPS FALL TO THE FREEZING MARK. NORTHWEST SFC WINDS WILL BE GUSTY THIS MORNING DUE TO A TIGHT GRADIENT BETWEEN DEPARTING LOW PRESSURE OVER THE MID-ATLANTIC REGION AND A RIDGE OF HIGH PRESSURE BUILDING IN FROM THE MISSISSIPPI VALLEY.
344 AM MST MON JAN 26 2015 OUR LATE JANUARY THAW CONTINUES TODAY AS A STRONG UPPER RIDGE MAKES ITS SLOW EASTWARD PROGRESS ACROSS THE STATE. A SHRINKING BATCH OF HIGH CLOUDS SLIDING DOWN THE FRONT SIDE OF THIS RIDGE WILL QUICKLY PASS OVER ERN SECTIONS OF THE CWA EARLY THIS MORNING. BY MID TO LATE MORNING SHOULD SEE A RETURN TO CLEAR SKIES WHICH SHOULD PERSIST THROUGH THE OVERNIGHT HOURS WITH THE UPPER RIDGE PASSING OVERHEAD. MID 60S FARTHER OUT ON THE PLAINS AND BALMY 40S AND LOWER 50S IN THE HIGH COUNTRY. AND BALMY TEENS AND LOWER 20S IN THE HIGH COUNTRY. THE STRONG RIDGE ALOFT WILL SHIFT ACROSS COLORADO ON TUESDAY AND INTO THE CENTRAL PLAINS TUESDAY NIGHT.
AS LOW PRESSURE MOVES TO NEW ENGLAND SNOW SHOWERS WILL CONTINUE INTO TUESDAY. HAVE RECONFIGURED ADVISORIES TO EXTEND ENDING TIMES AS MODELS AGREE ON SNOW CONTINUING INTO THE EVENING ACROSS EASTERN OHIO INTO PITTSBURGH AND ACROSS THE NORTH AND RIDGES INTO THE OVERNIGHT. AS UPPER TROUGH SHIFTS EAST DIFFLUENT ZONE ALOFT SHIFTING EAST ACROSS REGION WILL KEEP ACCUMULATING SNOW THROUGH THE DAY. SOME TOTAL AMOUNTS OVER 6 INCHES FROM EAST OF PITTSBURGH TO INDIANA AND THE LAUREL RIDGES BUT AGAIN THIS IS FOR A LONG DURATION OVER 36 HOURS. WITH BETTER AMOUNTS IN THE HIGHEST ELEVATIONS AND UNDER ADVISORY CRITERIA.
1005 AM EST MON JAN 26 2015 LOW PRESSURE WILL QUICKLY MOVE AWAY FROM THE REGION THIS MORNING. HIGH PRESSURE WILL THEN BUILD IN THROUGH THE MIDDLE OF THE WEEK.
NO OTHER CHANGES TO THE GRIDS WITH UPPER RIDGE IN PLACE. HIGH PRESSURE WILL REMAIN IN CONTROL TODAY THROUGH TUESDAY.
508 AM CST MON JAN 26 2015 FOR 12Z TAFS /ISSUED 236 AM CST MON JAN 26 2015/ WATER VAPOR IMAGERY SHOWS A VORT SPOKE ROTATING THRU TN AND AL AS A POWERFUL 170KT UPPER JET ROUNDS THE BASE OF THE TROF INTO THE NRN GULF OF MEXICO. GUSTY W-WNWLY FLOW WAS IN PLACE OVER THE TN VALLEY IN ADVANCE OF THE COLD FRONT WHICH WAS ACROSS SRN TN. THE COLD ADVECTION SHOULD TAKE TEMPS DOWN INTO THE L-M30S AROUND DAYBREAK, AND PERHAPS BRIEFLY TO FREEZING NEAR SEWANEE (ABOVE 1800 FT), BUT PROBABLY TOO BRIEF TO ALLOW FOR ANY FREEZING DRIZZLE PROBLEMS BEFORE DAYBREAK. THE RIDGE AXIS OVER THE ROCKIES INTO MEXICO WILL SHIFT EAST BUT BREAK DOWN SOME IN DOING SO.
OUR LATE JANUARY THAW CONTINUES TODAY AS A STRONG UPPER RIDGE MAKES ITS SLOW EASTWARD PROGRESS ACROSS THE STATE. A SHRINKING BATCH OF HIGH CLOUDS SLIDING DOWN THE FRONT SIDE OF THIS RIDGE WILL QUICKLY PASS OVER ERN SECTIONS OF THE CWA EARLY THIS MORNING. BY MID TO LATE MORNING SHOULD SEE A RETURN TO CLEAR SKIES WHICH SHOULD PERSIST THROUGH THE OVERNIGHT HOURS WITH THE UPPER RIDGE PASSING OVERHEAD. MID 60S FARTHER OUT ON THE PLAINS AND BALMY 40S AND LOWER 50S IN THE HIGH COUNTRY. AND BALMY TEENS AND LOWER 20S IN THE HIGH COUNTRY. THE STRONG RIDGE ALOFT WILL SHIFT ACROSS COLORADO ON TUESDAY AND INTO THE CENTRAL PLAINS TUESDAY NIGHT.
546 AM CST MON JAN 26 2015 H5 ANALYSIS ACROSS THE CONUS TONIGHT HAS A DEEPENING TROUGH OF LOW PRESSURE OVER THE OHIO VALLEY SWD TO THE GULF COAST. FURTHER WEST HIGH PRESSURE WAS ANCHORED OVER NERN NEVADA WITH A RIDGE EXTENDING NWD INTO BRITISH COLUMBIA AND ALBERTA. A WARM FRONT EXTENDED FROM AROUND ONEILL SSW TO AROUND LEXINGTON AS OF 2 AM CST. THE MAIN FORECAST CHALLENGE OVER THE NEXT 24 HOURS IS TEMPERATURES AS A RIDGE OF HIGH PRESSURE ALOFT BUILDS EAST OF THE INTERMOUNTAIN WEST. 500 MB RIDGE AXIS OVERHEAD TUESDAY AFTERNOON WITH 850 MB TEMPS IN THE MID TO UPPER TEENS C. COLD FRONT TO WORK ACROSS THE AREA TUESDAY NIGHT WITH 850 MB TEMPS TO BEGIN TO FALL.
STRONG HIGH PRESSURE WILL BUILD ACROSS THE AREA IN THE NEXT 24 HOURS. AMPLIFIED RIDGE ACROSS THE WEST WILL MOVE INTO THE CENTRAL AND SOUTHERN PLAINS DURING THE SHORT TERM PERIOD WHILE CUT OFF LOW OVER THE PACIFIC COAST MOVES INLAND. THIS LOW WEAKENS INTO AN OPEN WAVE AS IT LIFTS NORTHEAST MONDAY INTO TUES INCREASING THE MOISTURE CONTENT AND AS A RESULT INCREASE CLOUD COVER ACROSS S TX. THIS CLOUD DECK WILL LIMIT TEMPERATURES TO COOL DOWN INTO THE LOWER 40S IN THE EARLY MORNING HOURS. RIDGE WILL BE CENTERED OVER THE CENTRAL PLAINS INTO TUES WHICH WILL KEEP LIGHT WINDS ACROSS THE AREA.
AS NW LOW LEVEL FLOW OCCURS ON THE BACK SIDE OF THE PASSING LOW PRESSURE SYSTEM. CHATTANOOGA AIRPORT, TN 43 31 47 28 / 20 10 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 42 30 41 22 / 50 20 10 0 OAK RIDGE, TN 41 29 42 24 / 50 20 10 0 TRI CITIES AIRPORT, TN 41 25 35 18 / 80 20 20 0 TN.
927 AM EST MON JAN 26 2015 LOW PRESSURE WILL QUICKLY MOVE AWAY FROM THE REGION THIS MORNING. HIGH PRESSURE WILL THEN BUILD IN THROUGH THE MIDDLE OF THE WEEK.
606 AM EST MON JAN 26 2015 FAST MOVING LOW PRESSURE SYSTEM WILL CROSS THE REGION TODAY WITH ISOLATED LIGHT SHOWERS AND BREEZY CONDITIONS.
737 AM EDT Thu Jul 15 2021 The Bermuda High will ridge into the forecast area through the weekend providing a typical summertime pattern.