Aikyam-Lab/Synoptic-Bench huggingface dataset:
Warm frontal boundary will be followed closely by a cold frontal boundary, causing temperatures to increase about 10 degrees from yesterday's readings by late afternoon, however cold air behind the system will not be very pronounced. An outside chance for brief freezing rain early in the morning in Knox and Stark counties, but looks like rain will hold off until a few hours after sunrise, and temperatures likely to rise above freezing just in time for start of precipitation.
BEHIND A COLD FRONT THAT WILL MOVE WEST TO EAST THROUGH THE REGION. GUSTY NORTHWEST WINDS WILL BE FOUND IN THE WAKE OF THE COLD FRONTAL PASSAGE. ANOTHER WEAK AREA OF LOW PRESSURE WILL SLIDE SOUTHEASTWARD IN NORTHWEST FLOW ON MONDAY.
540 AM MDT SUN MAR 29 2015 04Z WATER VAPOR IMAGERY/RAP ANALYSIS INDICATES STRONG SHORT WAVE TROUGH MOVING INTO THE DAKOTAS WITH LARGE AREA OF DRYING NOTED TO THE SOUTH OF THE CIRCULATION. COLD FRONT WAS ENTERING THE NEBRASKA PANHANDLE WITH 3 HOUR PRESSURE RISES EXCEEDING 7MB IN WESTERN SOUTH DAKOTA.
741 AM EDT SUN MAR 29 2015 NEAR OR BELOW FREEZING TEMPERATURES EXPECTED EARLY THIS MORNING AS THE CENTER OF A COLD AIR MASS SETTLES IN OVERHEAD. THE AREA OF HIGH PRESSURE WILL MOVE OFFSHORE TONIGHT. LATEST MSAS SURFACE ANALYSIS SHOWING TEMPERATURES ALREADY AT OR BELOW FREEZING ACROSS THE NORTHERN MIDLANDS. AND ABOVE FREEZING ELSEWHERE. TEMPERATURES SHOULD CLIMB BACK UP ABOVE FREEZING ACROSS THE AREA BY 14Z. THEN WITH PLENTY OF SUNSHINE AFTERNOON WITH SHORT WAVE RIDGE ALOFT. AN UPPER LEVEL TROUGH WILL TRACK EASTWARD OVERNIGHT. PUSHING A WEAK COLD FRONT TOWARDS THE AREA ALSO. THIS WILL ALLOW FOR SLIGHTLY WARMER OVERNIGHT LOWS TONIGHT AS LOW-LEVEL MOISTURE BEGINS RETURNING. TEMPERATURES IN THE LOWER TO MIDDLE 60S NORTH AND CENTRAL.
TEMPERATURES ARE A BIT WARMER ACROSS THE REMAINDER OF THE MIDSOUTH. ALTHOUGH STILL NEAR OR BELOW FREEZING ACROSS MOST OF THE AREA. WE SHOULD SEE TEMPERATURES RISE ABOVE FREEZING BY 9-10 AM. WITH NO ADDITIONAL FREEZING TEMPERATURES IN THE FORECAST FOR THE NEXT 7 DAYS. A WEAK MIDLEVEL TROUGH AND ASSOCIATED SURFACE COLD FRONT WILL SHIFT ACROSS THE REGION LATE SUNDAY NIGHT INTO EARLY MONDAY. TEMPERATURES WILL LIKELY BE EVEN SLIGHTLY WARMER MONDAY. TEMPERATURES MONDAY MORNING SHOULD BE IN THE LOW 40S TO LOW 50S.
AS HIGH PRESSURE CONTINUES TO MOVE OFF TO THE EAST AND LOW PRESSURE FORMS OVER THE SOUTHERN PLAINS. RETURN FLOW MOISTURE IS MOVING INTO THE AREA FROM THE SOUTHWEST AS HIGH PRESSURE REMAINS OVER THE TENNESSEE VALLEY.
1114 AM EDT SUN MAR 29 2015 HIGH PRESSURE ACROSS THE CAROLINAS THIS MORNING WILL SLOWLY MOVE OFF THE COAST BY THIS AFTERNOON. THE AREA OF HIGH PRESSURE WILL MOVE OFFSHORE TONIGHT. WITH PLENTY OF SUNSHINE THIS AFTERNOON AND SHORT WAVE RIDGE ALOFT EXPECT READINGS TO RISE INTO THE MIDDLE TO UPPER 50S. ALTHOUGH A DEGREE OR TWO WARMER THAN YESTERDAY. AN UPPER LEVEL TROUGH WILL TRACK EASTWARD OVERNIGHT. PUSHING A WEAK COLD FRONT TOWARDS THE AREA ALSO. THIS WILL ALLOW FOR SLIGHTLY WARMER OVERNIGHT LOWS TONIGHT AS LOW-LEVEL MOISTURE BEGINS RETURNING. TEMPERATURES IN THE LOWER TO MIDDLE 60S NORTH AND CENTRAL.
1021 AM EDT SUN MAR 29 2015 HIGH PRESSURE WILL CROSS THE AREA TODAY THEN MOVE EAST OF THE REGION TONIGHT.
THE LOW CLOUDS ARE NOT MAKING MUCH INLAND PROGRESS AS THE EDDY IS FIGHTING WEAK OFFSHORE FLOW. OTHERWISE TODAY WILL BE MOSTLY SUNNY AND A LITTLE COOLER THAN YDY BUT STILL MOST MAX TEMPS WILL BE ABOVE NORMAL. A VERY WEAK TROF WILL MOVE OVER THE AREA IN THE MORNING AND A VERY WEAK RIDGE WILL BUILD IN DURING THE AFTERNOON. THE LIFT OF THE TROF AND THE WEAK EDDY WILL CREATE A STRATUS FIELD THAT SHOULD COVER MOST OF THE LA/VTA/SRN SBA COASTS.
A COLD FRONT WILL PUSH THROUGH THE AREA THIS AFTERNOON AND EVENING.
TODAY THROUGH MONDAY NIGHT CURRENT SURFACE MAP SHOWS COLD FRONT MOVING THROUGH EASTERN DAKOTAS. WITH SECONDARY TROF ROTATING THROUGH WESTERN SOUTH DAKOTA. WITH 5-6MB/3HR PRESSURE RISES AND STEEP LOW LEVEL LAPSE RATES WITH SECONDARY TROF.
WITH HIGH PRESSURE BUILDING INTO THE COASTAL WATERS EXPECT A NORTHEASTERLY FLOW WITH 2 TO 4 FOOT SEAS.
/ISSUED 403 AM CDT SUN MAR 29 2015/ WITH A LONG WAVE TROUGH SITUATED OVER THE EASTERN SEABOARD AND AN UPPER LEVEL RIDGE SITTING OVER THE DESERT SOUTHWEST. AND THIS APPROACHING SYSTEM AND PENDANT COLD FRONT WILL USHER IN SENSIBLE WEATHER CHANCES FOR NORTH AND CENTRAL TEXAS LATE TONIGHT AND INTO TOMORROW. THE COLD FRONT IS EXPECTED TO PUSH INTO FAR NORTHWESTERN NORTH TEXAS LATE THIS AFTERNOON AND EVENTUALLY STALL ACROSS OUR AREA SUNDAY NIGHT/MONDAY MORNING.
THERE IS 35-40KTS THROUGHOUT THE LOWER BOUNDARY LAYER AND NEAR 50KTS AT THE TOP.
A VERY FORMIDABLE AND EXPANSIVE REGION OF HIGH PRESSURE IS CENTERED OVER THE MID ATLANTIC AND SOUTHEAST UNITED STATES. WITH A RIDGE AXIS REACHING DOWN THE SPINE OF THE FLORIDA PENINSULA. DEEP AND MASSIVE ANTICYCLONE CENTERED OVER THE EASTERN HALF OF THE GULF OF MEXICO. HAVE UPDATED TO DROP THE HIGH TEMPERATURES FROM THE UPPER 70S TO THE MID 70S. WITH THE LARGE AND SPRAWLING AREA OF HIGH PRESSURE CENTERED OVER THE MID ATLANTIC AND SOUTHEAST STATES PRESSING SOUTHEASTWARD. HEATING ON THE SOUTH FLORIDA PENINSULA COMBINED WITH WATER TEMPERATURES AVERAGING IN THE LOWER TO MID 70S NORTH OF THE MIDDLE KEYS AND ON FLORIDA BAY WILL DISRUPT THE FLOW RESULTING IN A SLACKENING OF WINDS.
1201 PM EDT SUN MAR 29 2015 A RIDGE OF HIGH PRESSURE. A COLD FRONT WILL MOVE FROM THE OHIO VALLEY ACROSS CENTRAL PENNSYLYVANIA TONIGHT INTO EARLY MONDAY.
Mid level based showers have been slowly increasing in coverage from western Iowa into eastern Nebraska in association with strong warm advection and large scale ascent in advance of a digging trof. Temperatures today should be a good deal warmer than yesterday thanks to gusty southerly winds and warm advection ahead of the encroaching cold front, but will still be a bit below average for late March.
1047 AM CDT SUN MAR 29 2015 A COLD FRONT WITH ONLY SLIGHTLY COOLER. A COLD FRONT WILL MOVE INTO NORTHWEST OKLAHOMA BY MID MORNING AND WILL APPROACH OKC AROUND 18Z. /ISSUED 346 AM CDT SUN MAR 29 2015/ GUSTY WINDS WILL DEVELOP BEHIND A COLD FRONT THIS MORNING AND AFTERNOON WITH SOME GUSTS NEAR 40 MPH IN NORTHWEST AND WEST CENTRAL OKLAHOMA.
1141 AM EDT SUN MAR 29 2015 COLD HIGH PRESSURE BUILDS FROM THE WEST THROUGH THIS EVENING. SEVERAL COLD FRONTS WILL MOVE THROUGH THE OHIO VALLEY FOR THE UP COMING WORK WEEK. DRY AIRMASS IN PLACE TODAY WITH HIGH PRESSURE IN CONTROL. CLOUDS WILL INCREASE FROM WEST TO EAST TONIGHT AS COLD FRONT APPROACHES TONIGHT. WITH RAIN SNOW MIX OVER THE HIGHER TERRAIN. PATTERN CONTINUES TO UNDERGO CHANGE THIS PERIOD FROM A DEEP EASTERN UPPER TROUGH AND WESTERN UPPER RIDGE.
A WEAK BACK DOOR COLD FRONT WILL ENTER FAR NE NM NEAR OR JUST AFTER DAWN AND CONTINUE SOUTH AND WEST ACROSS THE EAST HALF OF THE STATE TODAY.
RIGHT AT ONSET OF THE RAIN THERE IS A CHANCE FOR SOME FREEZING RAIN. THIS WILL LEAD TO WARMER TEMPERATURES AND POSSIBLY DRY OUT THE AREA BY MID AFTERNOON.
DID NOT MAKE SIGNIFICANT CHGS TO THE ONGOING FCST CONCERNING THE MID/UPPER TROUGH AND PRECIP CHCS TUE NIGHT THROUGH WED. MODELS ARE IN GOOD AGREEMENT THAT A COLD FRONT WILL MOVE ACROSS THE AREA ON FRI NIGHT WITH A SLIGHT CHC/CHC OF PRECIP NEAR AND BEHIND THE BOUNDARY.
836 AM MDT SUN MAR 29 2015 THE SHALLOW HUMIDITY AND DUST THAT BLEW IN LATE LAST NIGHT BEHIND A FAST MOVING COLD FRONT HAS COLLECTED UP AGAINST THE FRONT RANGE FOOTHILLS EARLY THIS MORNING AS A RESULT OF EAST-NORTHEASTERLY WINDS. OTHERWISE STILL IN FOR A COOLER DAY BUT WITH THE ABUNDANT SUNSHINE IT MAY NOT FEEL THAT MUCH COOLER. COOLER AND DRIER AIR IS MOVING IN BEHIND A COLD FRONT.
THE LOW LEVEL JET HAS STRENGTHENED ACROSS S TX THIS MORNING BASED ON THE CRP RADAR VAD WIND PROFILE. A RIDGE AXIS CURRENTLY OVER MEXICO IS PROGD TO SHIFT SE AND BECOME FLATTER THROUGH THE SHORT TERM AS LOW PRESSURE APPROACHES BAJA CA FROM THE PACIFIC.
758 AM EDT SUN MAR 29 2015 AVIATION/MARINE A COLD FRONT WILL BRING A MIX OF LIGHT RAIN AND LIGHT SNOW LATE THIS MORNING THROUGH THIS AFTERNOON INTO THIS EVENING AND IT WILL ALSO BECOME RATHER WINDY THIS AFTERNOON.
A weak frontal trough is currently located across the central Plains up near central Nebraska this morning and moving southeastward. Temperatures will be more seasonable today with highs in the lower to middle 60s. The overall weather pattern will shift early to middle of this week with some upper level ridging trying to move in from the west.
AN AREA OF WEAK LOW PRESSURE WILL PASS SOUTH OF THE AREA EARLY THIS WEEK BRINGING INCREASED CLOUDINESS.
A TIGHTENING PRESSURE GRADIENT IN RESPONSE TO DEVELOPING LOW PRESSURE ACROSS THE SOUTHERN HIGH PLAINS ALONG WITH THE THERMALLY INDUCED GRADIENT SHOULD OFFER STRONG SOUTHERLY FLOW ACROSS SOUTH TEXAS.
1130 AM EDT SUN MAR 29 2015 HIGH PRESSURE PASSES TO OUR SOUTH TODAY AND MOVES OFFSHORE TONIGHT. A COLD FRONT MOVES ACROSS THE REGION ON MONDAY.
A COLD FRONT WILL MOVE INTO NORTHWEST OKLAHOMA BY MID MORNING AND WILL APPROACH OKC AROUND 18Z. /ISSUED 346 AM CDT SUN MAR 29 2015/ GUSTY WINDS WILL DEVELOP BEHIND A COLD FRONT THIS MORNING AND AFTERNOON WITH SOME GUSTS NEAR 40 MPH IN NORTHWEST AND WEST CENTRAL OKLAHOMA.
WARM AND DRY WEATHER CONTINUES THROUGH THE SHORT TERM PORTION OF THE FORECAST AS MID AND UPPER LEVEL RIDGING REMAIN THE DOMINANT WEATHER FEATURE ACROSS SOUTH CENTRAL TEXAS. SOUTHERLY FLOW IN THE LOW-LEVELS REMAINS INTACT AND WE EXPECT ENOUGH MOISTURE RETURN TO RESULT IN PERIODS OF LATE NIGHT AND MORNING CLOUDS NEAR THE ESCARPMENT. THE SHORT RANGE MODELS SHOW A COLD FRONT MOVING INTO WEST TEXAS TONIGHT. HIGH TEMPERATURES FOR TODAY WILL RANGE FROM NEAR 90 ALONG THE RIO GRANDE TO THE LOWER 80S ALONG THE HIGHWAY 77 CORRIDOR.
944 AM EDT SUN MAR 29 2015 BRIEF HIGH PRESSURE WILL BRING MODERATING TEMPERATURES AND MOSTLY SUNNY SKIES TO THE REGION TODAY. HIGH PRESSURE CURRENTLY DOMINATING WITH CLEAR SKIES. TEMPERATURES WILL MODERATE AS THE COLD POOL GETS CUT OFF FROM ITS SOURCE REGION AND THE UL TROF EXITS TO THE NORTHEAST. AN UPPER ATMOSPHERIC TROF WILL PUSH INTO NY AND PA TONIGHT. HENCE THE HIGHER SNOW FALL TOTALS.
COOL HIGH PRESSURE WILL SETTLE INTO THE CAROLINAS TODAY WITH LIGHT NORTHERLY FLOW CONTINUING ACROSS THE TRI-STATE AREA.
CHATTANOOGA AIRPORT, TN 27 59 49 67 / 0 10 70 40 KNOXVILLE MCGHEE TYSON AIRPORT, TN 24 57 44 63 / 0 10 70 30 OAK RIDGE, TN 23 58 42 65 / 0 10 70 30 TRI CITIES AIRPORT, TN 17 53 38 62 / 0 10 70 40 NC.
842 AM EDT SUN MAR 29 2015 SUNNY AND DRY WITH SLIGHTLY WARMER TEMPERATURES TODAY AHEAD OF A WEAK SYSTEM THAT WILL BRING RAIN AND SNOW OVERNIGHT INTO MONDAY. AS THE CENTER OF THE HIGH MOVES INTO THE MID-ATLANTIC TODAY. THE CLOCKWISE FLOW AROUND IT WILL SUPPORT SOUTHERLY FLOW BRINGING WARMER TEMPERATURES TO THE FORECAST AREA. THE WARMER SOUTHERLY BREEZES WILL HAVE A LONG WAY TO GO TO GET BACK INTO THE REALM OF AVERAGE. AS THE MAIN TROF AXIS ENTERS. A WEAK WARM FRONT WILL LIFT JUST INTO THE SOUTHERN EXTENT OF THE FORECAST AREA.
HOWEVER THE MORE DEFINED COLD FRONT/PRESSURE BUBBLE /AS INDICATED BY MSAS 3 HR PRESSURE RISES AROUND 7 MB/ IS NOW DROPPING SOUTH OUT OF NORTH DAKOTA. ESPECIALLY AROUND THE PIERRE AREA WHERE MIN RH VALUES WILL BE IN THE LOW 20S.
THIS MEANS LOTS OF SUNSHINE TODAY WITH TEMPS REBOUNDING WELL INTO THE 70S WITH CONTINUED LOW HUMIDITY LEVELS AS HIGH PRESSURE RIDGES INTO SOUTH FL FROM THE NORTH.
A WARM FRONT WILL LIFT NORTH OVER THE STATE TODAY. A COLD FRONT WILL DROP SOUTH THROUGH THE STATE THIS EVENING AND OVERNIGHT.
AREAS NORTHEAST AND OUT OF THE CLOUDS HAVE FALLEN TO NEAR THE FREEZING MARK. BELIEVETHERE WAS ENOUGH OF A CHANCE SOMEWHERE IN THESE COUNTIES TO HIT FREEZING THAT WILL LEAVE IT GOING FOR NOW. THE LARGE UPPER TROUGH EXITS TO THE EAST WITH A SHORT WAVE RIDGE OVERHEAD TODAY. BUT ANOTHER UPSTREAM TROUGH QUICKLY SWINGS DOWN FROM THE NORTHWEST OVERNIGHT. THIS FEATURE WILL PUSH A COLD FRONT THROUGH THE AREA AND BRING US GOOD RAIN CHANCES INTO MONDAY.
HIGH PRESSURE CENTER VICINITY CENTRAL/SOUTHERN APPALACHIANS WILL CONTINUE TO PUSH SOUTHEAST WHILE ORIENTATION OF THE RIDGE BECOMES WEST/EAST AS COLD FRONT MOVES TOWARDS THE EASTERN SEABOARD. HIGH PRESSURE CENTER DROPPING SOUTHEAST OUT OF THE MID SECTION OF THE COUNTRY STRENGTHENED A FEW MILLIBARS AS WAS FORECAST.
937 AM CDT SUN MAR 29 2015 SKIES CONTINUE TO CLEAR OVER THE AREA AS UPPER TROUGH PUSHES OFF TO THE EAST. WINDS RAPIDLY DIMINISHING AND HAVE CANCELLED MOST OF THE HIGH WIND WARNING. EARLY THIS MORNING A COLD FRONT CONTINUED TO PROPAGATE ACROSS CENTRAL NORTH DAKOTA. THE COLD FRONT IS PROVIDING AMPLE LIFT TO SUPPORT AN AREA OF RAIN SHOWERS ACROSS CENTRAL NORTH DAKOTA.
MILD AND MOSTLY DRY WEATHER THROUGH MON AS A FLAT UPPER LEVEL RIDGE REMAINS OVER THE PAC NW. A COLD FRONT WILL PUSH ACROSS THE REGION LATE MONDAY USHERING IN A MUCH COOLER AND MORE SEASONABLE AIR MASS ALONG WITH SHOWERS AND LOWER SNOW LEVELS THAT WILL LAST THROUGH THE END OF THE WORKWEEK. WATER VAPOR PICTURES AND UPPER AIR PLOTS SHOWED THE REGION UNDER A FLAT UPPER RIDGE WITH W FLOW ALOFT. AN UPPER LEVEL TROUGH WILL DIVE DOWN FROM THE GULF OF ALASKA ON MON. FINALLY DRIVING A STALLED FRONTAL BOUNDARY OFF VANCOUVER ISLAND ONSHORE AS A COLD FRONT. THE UPPER LEVEL TROUGH WILL MOVE THROUGH ON TUE. USHERING IN A SIGNIFICANTLY COOLER AIR MASS.
THEY WILL RISE THROUGHOUT THE DAY AS THE HIGH MOVES EAST SO ADJUSTED THE HOURLY TREND AS WELL. SHOWERS/TSTMS IN ASSOC WITH A COLD FRONT WILL MOVE INTO NRN ALABAMA AFTER 06Z.
1247 PM EDT SUN MAR 29 2015 HIGH PRESSURE WILL CROSS THE AREA TODAY THEN MOVE EAST OF THE REGION TONIGHT.
AS A STRONG DOME OF HIGH PRESSURE QUICKLY MOVES EWD INTO THE ATLANTIC BASIN. CURRENT TEMP TRENDS ARE PRETTY MUCH WELL BELOW FREEZING FOR MOST AREAS. IN ADVANCE OF THE NEXT COLD FRONT XPCTED TO SWEEP SEWD THROUGH THE REGION LATER TONIGHT. RAIN SHOULD THEN QUICKLY TAPER OFF FROM THE NW LATE MON MORNING WITH THE PASSAGE OF THE COLD FRONT. AS HIGH PRESSURE BEHIND THIS NEXT FRONT WILL QUICKLY WEAKEN AND MOVE OFF THE ATLANTIC COAST BY TUE MORNING. WITH SLIGHTLY COOLER/DRIER CONDITIONS FILTERING INTO THE REGION BY THE ONSET OF THE NEW WEEK/SUN. SHOWERS/TSTMS IN ASSOC WITH A COLD FRONT WILL MOVE INTO NRN ALABAMA AFTER 06Z.
WEAK UPPER RIDGE IN PLACE WITH SOME HIGH CLOUDS. WARMING THROUGH MONDAY BUT OTHERWISE UNEVENTFUL WX UNDER BROAD AND GRADUALLY BUILDING HIGH PRESSURE ALOFT.
Gusty winds will persist across the high plains throughout the day with some gusty winds possible at all locations during mid afternoon.
940 AM PDT SUN MAR 29 2015 SLIGHTLY COOLER TODAY AS A WEAK TROUGH MOVES ACROSS THE AREA.
/ISSUED 310 AM CDT Sun Mar 29 2015/ Another beautiful, warm day expected today as upper ridging persists across the region while slowly marching eastward. A cold front is still expected to move through the region this evening, possibly entering northern zones as early as mid afternoon. Will lean more toward the cooler MAVMOS for today. Monday will be much cooler with highs generally in the 70s.
705 AM CDT SUN MAR 29 2015 WINDS RAPIDLY DIMINISHING AND HAVE CANCELLED MOST OF THE HIGH WIND WARNING. EARLY THIS MORNING A COLD FRONT CONTINUED TO PROPAGATE ACROSS CENTRAL NORTH DAKOTA. THE COLD FRONT IS PROVIDING AMPLE LIFT TO SUPPORT AN AREA OF RAIN SHOWERS ACROSS CENTRAL NORTH DAKOTA.
WINDS VEER SLIGHTLY LATE SUNDAY PM WITH THE APPROACH OF ANOTHER DRY COLD FRONT. THE LATEST GUIDANCE CONTINUES TO INDICATE A SLIGHT WARMING TREND TONIGHT WITH TEMPERATURES WEST OF LAKE OKEECHOBEE AND INTO INTERIOR COLLIER COUNTY EXPECTED TO BE IN THE LOWER 40'S. MINIMUM WIND CHILLS WILL BE IN GENERAL A COUPLE OF DEGREES COOLER THAN THE AMBIENT TEMPERATURES.
UPPER TROUGH AND BAND OF DEEPER MOISTURE CURRENTLY SWINGING SOUTHEAST ACROSS SOUTHERN APPALACHIANS.
A WEAK BACK DOOR COLD FRONT WILL MOVE THROUGH FROM THE NORTHEAST BEFORE SUNRISE. KEEPING LOW CIGS THROUGH THE MORNING WITH AGAIN THE EXCEPTION OF AEX WHERE THE LOW LEVEL MOISTURE REMAINS TO THE SOUTH. AND WITH DEWPOINTS NOW IN THE LOWER 50S ACROSS THE I-10 CORRIDOR. THIS WILL HOLD THE TEMPERATURES AROUND 5 DEGREES COOLER THAN TODAY.
/ISSUED 144 PM CST Sat Feb 14 2015/ An upper ridge extending in from the west will keep the warm wx across the area for another day but colder wx is on the way. This low will bring a chance of precipitation as it approaches the area. Expect warm lows tonight as the wind stays out of the south with a leeside trough over Eastern NM. However a cold front will blow into the NE Permian Basin during the afternoon and push through the rest of area overnight.
855 PM EST SAT FEB 14 2015 HIGH PRES RIDGE AXIS HAS SAGGED SWD ACROSS SOUTH FL WITH 5-10KT W TO WSW FLOW IN PLACE ACROSS THE NORTHERN CWA AND LIGHT TO CALM WINDS ACROSS THE SOUTH.
558 PM CST SAT FEB 14 2015 A COLD FRONT WILL MOVE ACROSS THE SOUTHERN HALF OF OKLAHOMA THIS EVENING BRINGING GUSTY NORTHEAST WINDS.
618 PM CST SAT FEB 14 2015 VERY COLD/DRY ARCTIC AIR CONTINUES TO FILTER SOUTHWARD INTO THE WESTERN GREAT LAKES REGION THIS EVENING TO THE EAST OF ARCTIC HIGH PRESSURE CENTERED ALONG THE MANITOBA/ONTARIO BORDER. THE COLD NORTHERLY WINDS OVER THE NORTHLAND THIS AFTERNOON WILL GRADUALLY WEAKEN INTO TONIGHT AS HIGH PRESSURE IN MANITOBA MOVES INTO THE LAKE SUPERIOR REGION. LIGHT SOUTHERLY WINDS WILL DEVELOP LATE TONIGHT AND SUNDAY MORNING IN THE WAKE OF THE HIGH PRESSURE AND AS A TROUGH IN THE NORTHERN PLAINS APPROACHES THE UPPER MIDWEST.
CHATTANOOGA AIRPORT, TN 19 31 23 32 / 10 10 50 90 KNOXVILLE MCGHEE TYSON AIRPORT, TN 18 28 19 30 / 10 0 50 80 OAK RIDGE, TN 16 29 18 30 / 10 10 50 80 TRI CITIES AIRPORT, TN 14 22 13 26 / 30 0 40 80 NC.
JUST MADE MINOR TWEAKS TO THE 18Z TAFS FOR NOW - MAINLY TO SLIGHTLY DELAY ONSET OF THE LOWER VISBYS.
702 PM EST SAT FEB 14 2015 THE COLDEST AIR OF THE SEASON ARRIVES TONIGHT BEHIND AN ARCTIC COLD FRONT THAT PUSHED SOUTH ACROSS THE AREA EARLIER.
MID AND HIGH CLOUDS WILL CONTINUE TO STREAM OVER THE AREA AS THE UPPER LEVEL TROUGH MOVES TO EASTERN UTAH AND WEAKENS LATE TONIGHT. A MORE ENERGETIC WAVE DROPS OUT OF THE PACIFIC NORTHWEST ON SUNDAY DRIVING A COLD FRONT TO THE I-70 CORRIDOR ABOUT MIDDAY. PASSAGE OF THE COLD FRONT WILL BRING 5 TO 10 DEGREES OF COOLING TO THE AREA ESPECIALLY ACROSS THE NORTH.
AN UPPER RIDGE OF HIGH PRESSURE WILL BUILD OVER THE REGION WITH LOW LEVEL OFFSHORE FLOW DEVELOPING.
WEAK SHORT WAVE TROUGH BROUGHT CLOUDS BUT NO MEASURABLE PCPN TO OUR ZONES TODAY. WESTERLY UPPER WINDS ARE BECOMING MORE NORTHERLY BEHIND THE TROUGH AND SUNDAY WILL BE A FEW DEGS COOLER THAN TODAY.
310 PM MST SAT FEB 14 2015 COOLER AIRMASS HAS REALLY ONLY AFFECTED THE FAR NORTHEAST CORNER OF THE STATE AND SURGE IS WEAKENING BASED ON LATEST PRESSURE TENDENCIES. COLD FRONT ARRIVES EARLY SUNDAY MORNING. THIS WILL BRING CONSIDERABLY COOLER TEMPERATURES AND INCREASING BOUNDARY LAYER MOISTURE.
535 PM CST SAT FEB 14 2015 BOUNDARY FROM LOW PRESSURE SYSTEM HAS PUSHED WELL SOUTH OF IOWA BY LATE AFTERNOON.
A strong cold front passed through early Saturday and continued to surge south with strong cold advection and dry advection into the local forecast area. This will keep low temperatures a bit warmer than they would be with calm winds, but still quite cold in the 5-10 range.
THUS HAVE RAISED POPS OVER THE HIGHER TERRAIN AND ACROSS THE URBAN CORRIDOR. COOLER AIRMASS HAS REALLY ONLY AFFECTED THE FAR NORTHEAST CORNER OF THE STATE AND SURGE IS WEAKENING BASED ON LATEST PRESSURE TENDENCIES. COLD FRONT ARRIVES EARLY SUNDAY MORNING. THIS WILL BRING CONSIDERABLY COOLER TEMPERATURES AND INCREASING BOUNDARY LAYER MOISTURE.
703 PM EST SAT FEB 14 2015 WITH SEAS SUBSIDING THIS EVENING, THE SMALL CRAFT ADVISORY AND THE HIGH RISK OF RIP CURRENTS HAVE BEEN ALLOWED TO EXPIRE. WINDS VEER SLIGHTLY LATE SUNDAY PM WITH THE APPROACH OF ANOTHER DRY COLD FRONT. THE LATEST GUIDANCE CONTINUES TO INDICATE A SLIGHT WARMING TREND TONIGHT WITH TEMPERATURES WEST OF LAKE OKEECHOBEE AND INTO INTERIOR COLLIER COUNTY EXPECTED TO BE IN THE LOWER 40'S. MINIMUM WIND CHILLS WILL BE IN GENERAL A COUPLE OF DEGREES COOLER THAN THE AMBIENT TEMPERATURES.
A BACK DOOR COLD FRONT WILL SLOWLY SLIDE THROUGH THE PLAINS SUNDAY.
SO TWEAKED THE HOURLY VALUES TO REFLECT THE SLIGHTLY WARMER CONDITIONS. EXPECT A BRIEF GUSTY WIND SHIFT TONIGHT FROM THE NORTH AS A DRY COLD FRONT MOVES THROUGH.
HOWEVER THE REMINDER THAT THIS IS ACTUALLY WINTER IS QUICKLY APPROACHING AS A COLD FRONT OVER NORTHEASTERN KANSAS BACKDOORS INTO THE AREA SUNDAY MORNING. POST FRONTAL STRATUS WILL QUICKLY MOVE IN BEHIND THE FRONT AND UPSLOPE LOW-LEVEL FLOW SHOULD HOLD MAX TEMPERATURES IN THE UPPER 30S IN THE EASTERN OKLAHOMA AND NORTHEASTERN TEXAS PANHANDLE TO THE LOWER 50S IN THE SOUTHWEST TEXAS PANHANDLE. AN UPPER-LEVEL LOW CURRENTLY OVER WESTERN OLD MEXICO WILL LIFT NORTHEAST BEFORE MERGING WITH AN IMPULSE ROTATING AROUND AN UPPER LOW NEAR HUDSON BAY. WITH LOWS RANGING FROM THE UPPER TEENS TO THE LOWER 20S.
03Z temperatures across the area were much warmer than most model guidance. However, models were still consistently showing lows tonight ranging from just above freezing across the far north, to the low 40s near the coast. Therefore, we did not change the lows much, but adjusted the temperature curve to fit the current warmer trends in the 03-06Z timeframe. The cold front is just now arriving in the Birmingham and Atlanta areas, and should sweep through the area later tonight.
938 PM EST SAT FEB 14 2015 THE COLDEST AIR OF THE SEASON ARRIVES TONIGHT BEHIND AN ARCTIC COLD FRONT THAT PUSHED SOUTH ACROSS THE AREA EARLIER.
642 PM EST SAT FEB 14 2015 AN ARCTIC COLD FRONT WILL BRING BITTERLY COLD TEMPERATURES AND WIND CHILLS TO THE REGION THROUGH THE START OF THE WEEK. WILL BE CANCELING THE WINTER WEATHER ADVISORY FOR ALL LOCATIONS EXCEPT THE RIDGES. STEEP LOW LEVEL LAPSE RATES AND INSTABILITY FROM THE DIGGING UPPER TROUGH HAS PROVIDED FOR 1 INCH AN HOUR RATES AND NEAR ZERO VISIBILITY WITH THIS LINE. THE STRENGTH OF THE COLD FRONT WILL PROVIDE FOR THE COLDEST NIGHT THUS FAR THIS WINTER AND WITH A TIGHTENING SURFACE PRESSURE GRADIENT BETWEEN THE STRENGTHENING COASTAL LOW TO THE EAST AND THE HIGH TO THE WEST. ALREADY FRIGID TEMPERATURES WILL FURTHER PLUMMET AFTER NIGHTFALL AS THE HIGH SHIFTS EASTWARD AND WIND DIMINISHES.
218 PM PST SAT FEB 14 2015 High pressure will remain dominate through midweek delivering dry conditions and mild temperatures.
COLD FRONT MOVING INTO N GA THIS EVENING WILL PUSH ACROSS THE AREA BETWEEN 06Z-10Z TONIGHT. TIGHT PRESSURE GRADIENT WILL KEEP WINDS UP OVERNIGHT WHICH WILL KEEP TEMPERATURES WARMER TONIGHT THAN LAST NIGHTS READINGS. LOWS WILL RANGE FROM THE MID 30S NORTH TO THE LOWER 40S SOUTH. INCREASING SW WINDS WILL SHIFT TO THE NW AFTER MIDNIGHT AS COLD FRONT PUSHES SE ACROSS THE WATERS.
906 PM CST SAT FEB 14 2015 A WARM AFTERNOON HAS LEAD TO A WARMER EVENING. AROUND 10 DEGREES WARMER THAN 24 HOURS AGO. AND THE WESTERN GULF-CENTERED HIGH PRESSURE RDIGE KEEPS WINDS UNDER 5 KNOTS. THE BUST OF NO SIGNIFICANT FOG DEVELOPMENT WILL COME IF THIS WESTERN CIRRUS RIDING ATOP FLATTENED MID-LEVEL RIDGING THICKENS UP ENOUGH TO INHIBIT RADIATIVE COOLING. A COOLER AND CLOUDIER DAY TOMORROW WITH INCREASING RAIN CHANCES FROM NORTH TO SOUTH FROM THE AFTERNOON ONWARD.
GUSTY N-NE WINDS WILL CONTINUE THROUGH THE OVERNIGHT HOURS BEHIND STRONG COLD FRONT. /ISSUED 305 PM CST SAT FEB 14 2015/ THIS UNSEASONABLY WARM FEBRUARY DAY WILL COME TO AN ABRUPT HALT ACROSS NE OK AS THE LEADING EDGE OF A STRONG COLD FRONT SURGES INTO THE AREA THE REMAINDER OF THE AFTERNOON. WITH SOME LIGHT FREEZING RAIN/SLEET POSSIBLE ACROSS NE OK/NW AR WITH MAINLY LIGHT RAIN ELSEWHERE. AREAS FARTHER S (SE OK/WCNTRL AR) SHOULD SEE MOSTLY FREEZING RAIN WITH A MIX OF SLEET ENTERING LATER SUNDAY NIGHT. WITH THE HIGHEST AMOUNTS ACROSS NW AR. WHERE SFC TEMPS WILL HOVER VERY NEAR OR PERHAPS A BIT ABOVE FREEZING.
Arctic cold front continues to push south-southwest across the Missouri Ozarks and extreme southeast Kansas today. Outside of these bands, it will likely take longer to saturate the lower levels and snowfall amounts will not be as much.