Aikyam-Lab/Synoptic-Bench huggingface dataset:
AND ARE CURRENTLY IN THE LOWER/MID 50S FOR MOST OF THE FORECAST AREA. BUT THE EASTWARD EXTENT THROUGH 09/00Z WILL BE DEPENDENT ON HOW RAPIDLY THE LOWER TROPOSPHERE BECOMES SATURATED. KTW /ISSUED 354 AM CDT SUN MAR 8 2015/ MID/UPPER LEVEL BLOCKING THAT WAS SITUATED ALONG THE WEST COAST HAS WEAKENED SOMEWHAT THIS MORNING. AS THE LOW SOUTH OF THE FORMER REX BLOCK MOVES ACROSS NW MEXICO. TO THE LOWER 40S ON THE PLATEAU. THIS MORNING SHOULD BE THE LAST DAY FOR A WHILE (WEEK OR SO) THAT LOW TEMPERATURES WILL REMAIN ABOVE FREEZING.
1000 AM EDT SUN MAR 8 2015 HI PRES RIDGE EXTENDING FROM BERMUDA TO THE LWR MS VALLEY WILL KEEP A REMNANT FRONTAL BNDRY AND ITS ASSCD MOISTURE BAND SUPPRESSED OVER THE S FL PENINSULA. BUT WITH THE RIDGE GENERATING AN E/NE FLOW THRU THE LYR STATEWIDE ANY MOISTURE ADVECTION WILL BE LOCALIZED AND LIMITED TO THE AREAS ALONG THE TREASURE COAST. HIGH PRES RIDGE EXTENDING FROM BERMUDA TO THE LWR MS VALLEY WILL WEAKEN MAINTAIN A GENTLE TO MODERATE E/NE BREEZE ACRS THE LCL ATLC AS IT SLOW WEAKENS THRU THE DAY.
HIGH PRESSURE WILL RESIDE OVER SE GA AND NE FL THIS MORNING. WINDS TURN TO THE S AND SE MONDAY NIGHT AS A WARM FRONT LIFTS NORTHWARD.
Temps across the northern half of the CWA may be slightly more influenced by the cooler air on the north side of the weak stalled boundary.
CHATTANOOGA AIRPORT, TN 66 43 60 48 / 10 30 50 70 KNOXVILLE MCGHEE TYSON AIRPORT, TN 62 44 58 45 / 10 30 30 70 OAK RIDGE, TN 61 44 59 45 / 10 20 30 70 TRI CITIES AIRPORT, TN 58 36 57 42 / 0 20 20 70.
THE PRESSURE GRADIENT WILL REMAIN FAIRLY STEADY WITH HIGH PRESSURE OVER THE SOUTHEASTERN STATES SLOWLY SLIDING EASTWARD.
1003 AM EDT SUN MAR 8 2015 WEAK HIGH PRESSURE WILL BE OVER THE REGION THROUGH MONDAY WITH A COUPLE OF TROUGHS PASSING THROUGH.
856 AM CDT SUN MAR 8 2015 328 AM CDT THE BIG PICTURE FEATURES A WEAK HIGH PRESSURE RIDGE SCOOTING OVER THE REGION EARLY THIS MORNING. A WEAK LOW PRESSURE SYSTEM SLIDES FROM NORTHERN MN TO SOUTHEAST ONTARIO THIS EVENING. RAISED LOWS THIS MORNING SINCE TEMPS REMAIN ON THE WARMER SIDE. ALSO RAISED HIGHS TODAY BE A DEGREE OR TWO CONSIDERING YESTERDAY WAS WARMER THAN EXPECTED IN MANY LOCATIONS. HIGH PRESSURE MOVES IN THIS EVENING WITH CLOUDS CLEARING OUT. JEE 340 AM CDT BROAD HIGH PRESSURE WILL SETTLE TO THE SOUTHEAST OF THE AREA OFF TO THE ATLANTIC SEABOARD WHILE LOW PRESSURE TRACKS TOWARDS JAMES BAY. AS THE NORTHERN LOW SHIFTS EAST HIGH PRESSURE BUILDS INTO THE UPPER MIDWEST WITH A WEAK COLD FRONT MOVING DOWN PART OF OF THE LAKE.
CONSIDERABLE MID AND HIGH LEVEL CLOUDINESS WILL PERSIST FOR THIS FCST CYCLE IN ADVANCE OF AN UPPER LEVEL LOW PRESSURE STORM SYSTEM. A WEAK COLD FRONT WILL MOVE ACROSS THE TERMINAL SITES LATER THIS MORNING. /ISSUED 435 AM CDT SUN MAR 8 2015/ AN UPPER LEVEL LOW OVER NORTHWESTERN MEXICO IS BEGINNING TO SLOWLY MOVE EASTWARD. AND IS EXPECTED TO OPEN INTO A TROUGH THIS AFTERNOON. A WEAK COLD FRONT WILL CROSS THE PANHANDLES FROM THE NORTHWEST THIS AFTERNOON. AS THE UPPER LEVEL TROUGH APPROACHES TONIGHT. KEEPING JUST SLIGHT CHANCE MENTION AS THE BETTER MOISTURE SLIPS FURTHER SOUTH AND EASTWARD AHEAD OF THE BASE OF THE TROUGH. GENERALLY KEEPING A BROAD TROUGH OVER THE AREA BUT DISAGREEING ON THE DEVELOPMENT OF ANOTHER UPPER LEVEL LOW OVER NEW MEXICO/ARIZONA.
1046 AM EDT SUN MAR 8 2015 HIGH PRESSURE WILL CONTINUE OVER THE AREA THIS AFTERNOON WITH ABOVE NORMAL TEMPERATURES. HIGH PRESSURE WILL STAY IN CONTROL THROUGH THE REST OF THE DAY.
THE UPPER TROF OVER THE SW CONUS IS MOVING EAST. /ISSUED 403 AM CDT SUN MAR 8 2015/ THE UPPER LOW THAT HAS REMAINED NEARLY STATIONARY OVER NORTHERN BAJA THE PAST SEVERAL DAYS HAS BEGUN TO SHIFT EASTWARD OVER NORTHERN MEXICO AND SOUTHERN ARIZONA. AHEAD OF THIS UPPER LOW. THIS WILL ALLOW FOR THE WARMER TEMPS TODAY TO BE CONFINED TO NORTHEAST OKLAHOMA WHERE 60S SHOULD BE COMMON. CLOUD COVER AND RAIN CHANCES LOOK TO KEEP TEMPS A BIT COOLER WITH 50S BEING COMMON.
1042 AM EDT SUN MAR 8 2015 THE DRY PRESSURE RIDGE EXTENDING INTO THE FORECAST AREA TODAY WILL SHIFT FARTHER OFF THE SOUTHEAST COAST MONDAY. SHOULD SEE PLENTY OF SUN AGAIN TODAY WITH A DRY AIR MASS IN PLACE AND MANY LOCATIONS WILL SEE DIURNAL TEMPERATURE RANGES OF NEARLY 35 TO 40 DEGREES WITH AFTERNOON HIGHS EXPECTED IN THE LOWER TO MID 70S. THE RIDGE WILL BE FARTHER OFFSHORE TONIGHT. A DEVELOPING WARM FRONT WITH WEAK ISENTROPIC MAINLY IN THE WEST PART OF THE FORECAST AREA CLOSER TO THE DEEPER MOISTURE. EXPECT HIGHS IN THE LOWER TO MIDDLE 70S AND LOWS NEAR 50.
FREEZING LEVELS AREA WIDE WILL NEAR 10 KFT THROUGHOUT THE PERIOD. /ISSUED 438 AM CDT SUN MAR 8 2015/ UPPER TROF CONTINUES TO DIG ESEWD ACROSS THE SWRN CONUS.
1248 PM EDT SUN MAR 8 2015 WEAK HIGH PRESSURE WILL BE OVER THE REGION THROUGH MONDAY WITH A COUPLE OF TROUGHS PASSING THROUGH.
GETTING A COOLER START TO THE DAY TODAY AND THIS GIVES A LITTLE PAUSE THAT HIGHS MAY NOT QUITE BE AS WARM AS FORECAST. BUT WEAK LEE TROUGHING WILL CREATE BREEZY CONDITIONS AROUND KLVM AND BIG TIMBER. AS 500-MB RIDGING PERSISTS OVER THE REGION. TEMPERATURES THROUGH THE PERIOD WILL BE VERY WARM UNDER THE INFLUENCE OF THE UPPER LEVEL RIDGE.
MAINLY OVER THE HIGHER TERRAIN. A WEAK UPPER LEVEL LOW OVER SOUTHERN ARIZONA WILL COMBINE WITH A WEAK BACKDOOR COLD FRONT TO PRODUCE A FEW MAINLY MOUNTAIN SHOWERS AND THUNDERSTORMS TODAY.
VFR CEILINGS WILL GRADUALLY LOWER AS INTERMITTENT RAIN MOISTENS THE LOW LEVELS. A DEEPENING COASTAL TROUGH WILL BACK WINDS TO THE EAST AND NORTHEAST LATE TONIGHT.
1133 AM EDT SUN MAR 8 2015 UPDATE THE AREA WILL SEE A MIX OF CLOUDS AND SUN TODAY AS A WAVE OF LOW PRESSURE WILL APPROACH THE AREA LATER. TEMPERATURES WILL BE A LITTLE COOLER NEAR LAKE MICHIGAN. HAVE ISSUED A FCST UPDATE TO FEATURE MORE SUNSHINE AND SLIGHTLY WARMER MAX TEMPS TODAY. ALL GUIDANCE SOURCES ARE RUNNING ABOUT 5 DEGREES TOO COLD AT THIS HOUR AND CARRYING THAT FORWARD YIELDS HIGHS IN THE LOWER 40S FOR MUCH OF THE AREA THIS AFTERNOON. COOLER AT THE LAKESHORE THOUGH WITH SW FLOW. TEMPS WILL BE A LITTLE COOLER TODAY COMPARED TO YESTERDAY. THIS IS THE RESULT OF THE COLD FRONT THAT MOVED THROUGH YESTERDAY AND ANOTHER MOVING IN TODAY. THE LAKESHORE NORTH OF GRAND HAVEN WILL REMAIN A LITTLE COOLER WITH THE WIND OFF OF THE COOL LAKE.
AS AN UPPER LEVEL LOW IS SPINNING ACROSS BORDER REGION OF THE SOUTHWEST U. THE SOUTHERN JET AROUND THE LOW IS STREAMING AN INCREASING FEED OF MOISTURE INTO THE REGION. TEMPERATURES ARE RUNNING SOME 15F TO 20F DEGREES WARMER THAN THIS TIME YESTERDAY WITH NO ONE EVEN CLOSE TO FREEZING.
TEMPS AS OF 16Z WERE GENERALLY IN THE LOWER 60S ACROSS THE LOWER DESERTS. BLENDED BIAS CORRECTED CONSENSUS GUIDANCE YIELDS HIGHS IN THE LOWER 80S AROUND PHOENIX AND IN THE MID 80S ACROSS SW AZ/SE CA. AN UPPER LEVEL CUTOFF LOW PRESSURE SYSTEM CONTINUED TO SLOWLY MOVE THROUGH SOUTHERN AZ THIS MORNING.
821 AM PDT Sun Mar 8 2015 Above normal temperatures continue today and Monday under strong high pressure. A weather system will bring a chance of showers and cooler weather by mid-week. Other than a few high clouds cresting the west coast ridge, skies are clear across NorCal early this morning. Little change expected today and Monday as dry and mild conditions continue for the region as the strong ridge remains in place along the west coast. Fair skies continue this morning under strong high pressure.
640 AM CDT SUN MAR 8 2015 EARLY MRNG WATER VAPOR IMAGERY INDICATES A WEAK SHRTWV TROF MOVG THROUGH EASTERN SD. MODELS ARE IN GOOD AGREEMENT THAT THE WRN US RIDGE WILL DEVELOP EWD INTO THE NORTHERN PLAINS FOR MOST OF THE WORK WEEK. BUT THE GFS IS MUCH STRONGER LEADING TO COOLER TEMPERATURES.
AN UPPER LEVEL DISTURBANCE AND WEAK COLD FRONT CONTINUE TO MOVE ACROSS NORTHERN COLORADO THIS AM. OTHERWISE OTHER AREAS WILL BE SLIGHTLY COOLER TODAY WITH SOME SUNSHINE ESPECIALLY OVER NORTHERN AREAS OF COLORADO. IT WILL BE COOLER WITH A FRONT MOVING THROUGH DENVER EARLY THIS MORNING. OTHERWISE IT WILL BE DRY WITH TEMPERATURES ABOUT 5 DEGREES COOLER THAN YESTERDAY. A WEAK UPPER LEVEL TROUGH WILL BE OVER THE SOUTHERN ROCKIES WHILE A RIDGE RESIDES OVER THE WESTERN STATES.
As in previous days, winds for most areas remain low enough to keep fire danger in generally the high category, although a portion of far northeast Kansas where northeasterly winds pick up later today will rise into the very high category. should see highs in the upper 60s/near 70 along and south of the I 70 corridor with cooler readings around 60 along the NE border as northerly winds increase there earlier in the afternoon. Will keep lows tonight from the low 30s north to middle 30s east central. A southern stream upper level trough will move east across the southern plains. Highs will only reach the lower 60s.
626 AM CDT SUN MAR 8 2015 328 AM CDT THE BIG PICTURE FEATURES A WEAK HIGH PRESSURE RIDGE SCOOTING OVER THE REGION EARLY THIS MORNING. A WEAK LOW PRESSURE SYSTEM SLIDES FROM NORTHERN MN TO SOUTHEAST ONTARIO THIS EVENING. RAISED LOWS THIS MORNING SINCE TEMPS REMAIN ON THE WARMER SIDE. ALSO RAISED HIGHS TODAY BE A DEGREE OR TWO CONSIDERING YESTERDAY WAS WARMER THAN EXPECTED IN MANY LOCATIONS. HIGH PRESSURE MOVES IN THIS EVENING WITH CLOUDS CLEARING OUT. JEE 340 AM CDT BROAD HIGH PRESSURE WILL SETTLE TO THE SOUTHEAST OF THE AREA OFF TO THE ATLANTIC SEABOARD WHILE LOW PRESSURE TRACKS TOWARDS JAMES BAY. AS THE NORTHERN LOW SHIFTS EAST HIGH PRESSURE BUILDS INTO THE UPPER MIDWEST WITH A WEAK COLD FRONT MOVING DOWN PART OF OF THE LAKE.
741 AM EDT SUN MAR 8 2015 WEAK HIGH PRESSURE WILL BE OVER THE REGION THROUGH MONDAY WITH A COUPLE OF TROUGHS PASSING THROUGH.
728 AM EDT SUN MAR 8 2015 AVIATION THE AREA WILL SEE A MIX OF CLOUDS AND SUN TODAY AS A WAVE OF LOW PRESSURE WILL APPROACH THE AREA LATER. TEMPERATURES WILL BE A LITTLE COOLER NEAR LAKE MICHIGAN. TEMPS WILL BE A LITTLE COOLER TODAY COMPARED TO YESTERDAY. THIS IS THE RESULT OF THE COLD FRONT THAT MOVED THROUGH YESTERDAY AND ANOTHER MOVING IN TODAY. THE LAKESHORE NORTH OF GRAND HAVEN WILL REMAIN A LITTLE COOLER WITH THE WIND OFF OF THE COOL LAKE.
ISOLATED TO SCATTERED PATCHES OF LIGHT RAIN ARE DEVELOPING OVER DEEP SOUTH TEXAS AND THE RIO GRANDE VALLEY AS A 500 MB LOW PRESSURE SYSTEM SPINS OVER THE NORTHWEST CORNER OF MEXICO. PREVIOUSLY-MENTIONED MID-LEVEL LOW PRESSURE SYSTEM WILL FILL SLIGHTLY AND BEGIN TO SHIFT EAST THROUGH NORTHERN MEXICO. DEEP 500 MB TROUGH MOVES INTO SOUTH AND CENTRAL TEXAS. WITH AN INDUCED COLD FRONT MOVING EAST THROUGH THE BRO CWFA AND ABOUT TO PUSH OFFSHORE BY SUNSET. LIKELY CHANCE OF RAIN PERSISTS DUE TO THE TROUGH/FRONT COMBINATION. INHERITED HIGH TEMPERATURES LOOKED TOO COOL DUE TO A MODERATE ONSHORE FLOW IN ADVANCE OF THE COLD FRONT. SO WARMER HIGHS IN THE LOW TO MID 70S OVER A MAJORITY OF THE AREA WERE ADDED.
WEAK UPPER LOW CURRENTLY SEEN ON WV IMAGERY JUST SOUTH OF NOGALES. THIS IS ENOUGH TO JUSTIFY A SLIGHT CHANCE OF SHOWERS AND PERHAPS A THUNDERSTORM EAST OF TUCSON THIS AFTERNOON AS THE UPPER LOW PUSHES EASTWARD. THIS WILL BE ENOUGH AGAIN FOR A SLIGHT CHANCE OF SHOWERS AND PERHAPS A THUNDERSTORM ESPECIALLY ACROSS THE HIGHER TERRAIN NEAR THE NEW MEXICO BORDER INCLUDING THE WHITE MOUNTAINS.
1138 AM EDT SUN MAR 8 2015 WEAK LOW PRESSURE WILL SLOWLY CROSS THE REGION TODAY. ANOTHER AREA OF LOW PRESSURE WILL MOVE EAST THROUGH NORTHERN NEW ENGLAND ON MONDAY.
620 AM CDT SUN MAR 8 2015 FOR 12Z TAFS /ISSUED 354 AM CDT SUN MAR 8 2015/ MID/UPPER LEVEL BLOCKING THAT WAS SITUATED ALONG THE WEST COAST HAS WEAKENED SOMEWHAT THIS MORNING. AS THE LOW SOUTH OF THE FORMER REX BLOCK MOVES ACROSS NW MEXICO. TO THE LOWER 40S ON THE PLATEAU. THIS MORNING SHOULD BE THE LAST DAY FOR A WHILE (WEEK OR SO) THAT LOW TEMPERATURES WILL REMAIN ABOVE FREEZING.
After today, northwesterly and westerly upper level flow will bring a return of warmer temperatures (10 to 15 degrees above normal) through the end of the week.
612 AM EST TUE FEB 17 2015 LOW PRESSURE OVER COASTAL NORTH CAROLINA WILL MOVE OFFSHORE THIS MORNING. A COLD FRONT WILL MOVE ACROSS THE REGION WEDNESDAY.
STRONG HIGH PRESSURE WILL GRADUALLY SHIFT BACK OVER THE DESERT SOUTHWEST THROUGH THE WEEK. HIGH PRESSURE WILL EVENTUALLY BREAK DOWN ALLOWING FOR SLIGHTLY COOLER TEMPERATURES DURING THE WEEKEND. THE NEXT SEVERAL DAYS WILL BE QUITE PLEASANT ACROSS THE REGION WITH A PACIFIC RIDGE TAKING OVER AND GRADUALLY WARMING TEMPERATURES.
THOUGH PATCHES OF LIGHT RAIN WILL CONTINUE TO BE POSSIBLE OVER VERMILION BAY AND ACROSS THE LOWER ATCHAFALAYA BASIN FOR ANOTHER COUPLE OF HOURS. TEMPERATURES ACROSS PARTS OF CENTRAL AND EAST CENTRAL LOUISIANA HAVE FALLEN BELOW FREEZING OVER THE PAST HOUR OR SO. SO MORNING COMMUTERS GENERALLY ALONG AND NORTH OF HWY 190 SHOULD BE ALERT TO THE POTENTIAL FOR ICY SPOTS ON ANY BRIDGES OR ELEVATED ROADWAYS. COOL AND DRY WEATHER IS ON TAP FOR THE NEXT COUPLE OF DAYS AS THE DEEP UPPER TROF SLOWLY TRAVERSES THE CENTRAL AND EASTERN CONUS. TEMPERATURES WILL WARM RAPIDLY FRI INTO SAT AS SRLY WINDS INCREASE BETWEEN THE EASTWARD DEPARTING HIGH AND A DEEPENING LOW PRESSURE TROF OVER THE WRN HIGH PLAINS. WITH THE FLOW ALOFT BECOMING QUASI-ZONAL IN THE WAKE OF THE UPPER TROF.
AFDSGX 330 AM PST TUE FEB 17 2015 A RIDGE OF HIGH PRESSURE ALOFT WILL CONTINUE TO BRING WARM AND FAIR WEATHER THROUGH WEDNESDAY.
806 AM EST TUE FEB 17 2015 LOW PRESSURE WILL MOVE OFFSHORE THIS MORNING. A COLD FRONT WILL MOVE ACROSS THE REGION WEDNESDAY.
304 AM PST Tue Feb 17 2015 Dry weather with above normal temperatures will continue through the week under high pressure. Little change in the weather expected today as highly amplified ridge remains in place just off the west coast. The ridge will flatten Wednesday as a weather system passes well to the north into BC, but little change is expected for NorCal.
348 AM MST TUE FEB 17 2015 Benign weather can be expected over the next few days as a strong ridge of high pressure moves into the Northern Rockies.
445 AM CST TUE FEB 17 2015 PATCHY FREEZING DRIZZLE ASSOCIATED WITH THE LOW STRATUS WILL BE POSSIBLE THROUGH THE EARLY MORNING HOURS. TEMPERATURES THIS AFTERNOON ARE NOT EXPECTED TO MAKE IT MUCH ABOVE FREEZING WITH MANY AREAS ALONG THE TN BORDER REMAINING BELOW FREEZING TODAY. THIS WILL PREVENT THE LOW LEVEL AIR FROM MODIFYING/WARMING VERY MUCH AS IT TRAVELS SOUTH TOWARDS THE AREA.
639 AM EST TUE FEB 17 2015 HIGH PRESSURE WILL BRIEFLY BUILD IN TODAY BEFORE MID WEEK DISTURBANCES USHERS IN SNOW SHOWERS CHANCES AND FRIGID TEMPERATURES. SNOW HAS ENDED AS LOW PRESSURE EXITS THE REGION. CLEARING SHOULD WORK IN ACROSS MUCH OF THE AREA THIS MORNING AS HIGH PRESSURE BUILDS IN THOUGH UPSLOPE FLOW IN THE RIDGES MAY KEEP CLOUDS THERE. MOISTURE IS SHALLOW ENOUGH TO PRECLUDE SNOW SHOWERS IN THE RIDGES HOWEVER. CLOUDS SHOULD INCREASE AGAIN THIS AFTERNOON AHEAD OF AN APPROACHING COLD FRONT. THE COLD FRONT WILL CONTINUE TO ADVANCE TOWARD THE REGION TONIGHT WITH INCREASING CHANCES FOR SNOW SHOWERS LATE. COMBINED WITH AN ADVANCING UPPER TROUGH.
ANOTHER STRONG COLD FRONT IS EXPECTED TO CROSS THE AREA BY WEDNESDAY EVENING.
A HIGH PRESSURE RIDGE IS STILL IN CONTROL ACROSS THE FORECAST AREA. WEST SIDE COOLING IS GENERALLY IN RESPONSE TO THE FLOW TURNING FROM THE WARM OFFSHORE EASTERLIES TO COOLER ONSHORE WINDS. KEEPING TEMPERATURES A NOTICEABLE 10 DEGREES COOLER THAN YESTERDAY.
932 AM EST TUE FEB 17 2015 HIGH PRESSURE WILL BRIEFLY BUILD IN TODAY BEFORE MID WEEK DISTURBANCES USHERS IN SNOW SHOWERS CHANCES AND FRIGID TEMPERATURES. HAVE ADDED POPS BACK INTO THE PA/WV/MD RIDGES THROUGH THE MORNING HOURS WITH SNOW CURRENTLY BEING REPORTED AT LATROBE AND MORGANTOWN. SNOW HAS ENDED AS LOW PRESSURE EXITS THE REGION. CLEARING SHOULD WORK IN ACROSS MUCH OF THE AREA THIS MORNING AS HIGH PRESSURE BUILDS IN THOUGH UPSLOPE FLOW IN THE RIDGES MAY KEEP CLOUDS THERE. MOISTURE IS SHALLOW ENOUGH TO PRECLUDE SNOW SHOWERS IN THE RIDGES HOWEVER. CLOUDS SHOULD INCREASE AGAIN THIS AFTERNOON AHEAD OF AN APPROACHING COLD FRONT. THE COLD FRONT WILL CONTINUE TO ADVANCE TOWARD THE REGION TONIGHT WITH INCREASING CHANCES FOR SNOW SHOWERS LATE. COMBINED WITH AN ADVANCING UPPER TROUGH.
601 AM CST TUE FEB 17 2015 FOR 12Z TAFS /ISSUED 445 AM CST TUE FEB 17 2015/ PATCHY FREEZING DRIZZLE ASSOCIATED WITH THE LOW STRATUS WILL BE POSSIBLE THROUGH THE EARLY MORNING HOURS. TEMPERATURES THIS AFTERNOON ARE NOT EXPECTED TO MAKE IT MUCH ABOVE FREEZING WITH MANY AREAS ALONG THE TN BORDER REMAINING BELOW FREEZING TODAY. THIS WILL PREVENT THE LOW LEVEL AIR FROM MODIFYING/WARMING VERY MUCH AS IT TRAVELS SOUTH TOWARDS THE AREA.
A RIDGE OF HIGH PRESSURE ALOFT WILL CONTINUE TO BRING ABOVE WARM AND FAIR WEATHER THROUGH WEDNESDAY.
SLIGHTLY COOLER TEMPERATURES. THE LOW CLOUDS WILL PREVENT AFTERNOON HIGHS FROM REACHING THE LEVELS THEY HAD OVER THE HOLIDAY WEEKEND. AWAY FROM THE COAST TEMPERATURES WILL STILL BE SEVERAL DEGREES WARMER THAN NORMAL FOR MID FEBRUARY AS THE RIDGE MAINTAINS A WARMER AIRMASS OVERHEAD.
330 AM PST Tue Feb 17 2015 Dry weather with above normal temperatures will continue through the week under high pressure. Little change in the weather expected today as highly amplified ridge remains in place just off the west coast. The ridge will flatten Wednesday as a weather system passes well to the north into BC, but little change is expected for NorCal.
550 AM EST TUE FEB 17 2015 HIGH PRESSURE WILL BRIEFLY BUILD IN TODAY BEFORE MID WEEK DISTURBANCES USHERS IN SNOW SHOWERS CHANCES AND FRIGID TEMPERATURES. SNOW HAS ENDED AS LOW PRESSURE EXITS THE REGION. CLEARING SHOULD WORK IN ACROSS MUCH OF THE AREA THIS MORNING AS HIGH PRESSURE BUILDS IN THOUGH UPSLOPE FLOW IN THE RIDGES MAY KEEP CLOUDS THERE. MOISTURE IS SHALLOW ENOUGH TO PRECLUDE SNOW SHOWERS IN THE RIDGES HOWEVER. CLOUDS SHOULD INCREASE AGAIN THIS AFTERNOON AHEAD OF AN APPROACHING COLD FRONT. THE COLD FRONT WILL CONTINUE TO ADVANCE TOWARD THE REGION TONIGHT WITH INCREASING CHANCES FOR SNOW SHOWERS LATE. COMBINED WITH AN ADVANCING UPPER TROUGH.
/ISSUED 425 AM CST TUE FEB 17 2015/ COLD FRONT WELL INTO GULF. DIRTY NW FLOW AROUND DEEP LOW PRESSURE OVER EASTERN GREAT LAKES WILL KEEP SOME CLOUD STREAKS IN AREA. AS WELL AS A RETURN TO LIGHT SW WINDS TO KEEP TEMPS FROM FURTHER COOLING BEFORE ANOTHER REINFORCING COLD FRONT ARRIVES WEDNESDAY. ALTHOUGH MAY LINGER CLOSER TO FREEZING MARK IN EAST TX.
604 AM EST TUE FEB 17 2015 LOW PRESSURE WILL MOVE OFF THE COAST TODAY. EASTERN CONUS UPPER LEVEL TROUGH AMPLIFIES TONIGHT AND WEDNESDAY WITH RESULTING STRENGTHENING COLD ADVECTION. LIGHT WINDS TONIGHT SO TEMPERATURES WILL FALL BELOW FREEZING.
645 AM EST TUE FEB 17 2015 LOW PRESSURE WILL MOVE OFF THE COAST TODAY. EASTERN CONUS UPPER LEVEL TROUGH AMPLIFIES TONIGHT AND WEDNESDAY WITH RESULTING STRENGTHENING COLD ADVECTION. LIGHT WINDS TONIGHT SO TEMPERATURES WILL FALL BELOW FREEZING.
WITH LOWER STRATUS EXPECTED TO DEVELOP ONCE AGAIN LATE THIS EVENING AHEAD OF A REINFORCING COLD FRONT. NNW FLOW OF 5-10 KTS WILL BECOME LGT/VRBL BY THIS EVENING BEFORE INCREASING FROM THE WSW PRIOR TO ARRIVAL OF COLD FRONT.
/ISSUED 305 AM CST TUE FEB 17 2015/ LONGWAVE TROUGHING CONTINUES TO DOMINATE THE CONUS. THE AXIS OF THE TROUGH CURRENTLY STRETCHES FROM THE COLD CORE LOW OVER ONTARIO. THE TROUGH AXIS IS CURRENTLY SHIFTING EAST ACROSS TEXAS. MUCH OF THIS IS SUBLIMATING OR EVAPORATING PRIOR TO REACHING THE SURFACE DUE TO DRY CONDITIONS IN THE LOWER LEVELS OF THE ATMOSPHERE. WITH TEMPERATURES AT OR BELOW FREEZING ACROSS MUCH OF THE REGION. WE WILL EXPERIENCE A GRADUAL WARM-UP THIS WEEK AS THE UPPER TROUGH SHIFTS EASTWARD TO THE EAST COAST. AND AN UPPER RIDGE BUILDS IN FROM THE WEST.
433 AM CST TUE FEB 17 2015 A FEW SHOWERS MAY OCCUR TODAY AS WEAK DISTURBANCES CIRCULATE THROUGH A LARGE UPPER-LEVEL TROUGH.
UPPER TROUGH CONTINUES TO PROVIDE UPPER LEVEL SUPPORT FOR LIGHT TO MODERATE RAIN SHOWERS TO CONTINUE DEVELOPING AS THEY MOVE EAST TO NORTHEAST. THE ACTIVITY WILL DIMINISH BY MID MORNING AS THE TROUGH EXITS TOWARDS THE EAST. VFR CONDITIONS RETURN AND WILL PREVAIL THROUGH THE DAY WITH CLOUDS GRADUALLY BREAKING AS HIGH PRESSURE BUILDS AND DRY AIR FILTERS INTO THE AREA. UPPER LEVEL TROUGH SUPPORTS SOME DIFFLUENCE ALOFT ENHANCING OVERRUNNING RAIN PATTERN ACROSS THE RGV AT THIS TIME. LIGHT TO MODERATE SHOWERS WILL PREVAIL THROUGH THE NIGHT AND BEGIN TO LOWER INTO MID DAY TUESDAY ONCE THAT UPPER TROUGH MOVES E. STRONG UPPER LEVEL RIDGE BUILDING FROM THE WEST MAINTAINS A NORTHWEST FLOW ALOFT WEDNESDAY SHIFTING THE UPPER TROUGH FURTHER EAST. THIS WILL RESULT IN HIGH PRESSURE SHIFTING EASTWARD WITH NORTHEAST TO EAST FLOW RETURNING.
A RIDGE OVER THE WEST COAST WILL BRING NORTHWEST CALIFORNIA DRY WEATHER AND ABOVE NORMAL TEMPERATURES FOR THE NEXT FEW DAYS. A RIDGE OF HIGH PRESSURE WILL CONTINUE TO DOMINATE THE WEATHER PATTERN FOR THE NEXT FEW DAYS.
HIGH PRESSURE WILL DEVELOP ACROSS THE REGION FOR THE MID WEEK PERIOD.
531 AM CST TUE FEB 17 2015 EVENING UPPER AIR ANALYSIS SHOWS NORTHWESTERLY FLOW ALOFT WITH AN UPSTREAM AMPLIFIED RIDGE EXTENDING OVER THE PACIFIC COAST. A SECONDARY WAVE WAS NOTED OVER NORTHEASTERN WYOMING AND WILL BEGIN TO AFFECT THE AREA THIS AFTERNOON AS A STRONG SFC COLD FRONT DROPS THROUGH THE CWA.
WATCHING A SHORT WAVE TROUGH ON WATER VAPOR IMAGERY OVER C TX WHICH SHOULD MOVE EAST DURING THE DAY TODAY. HIGH PRESSURE BUILDING THROUGH TEXAS WILL SUPPORT LIGHT WINDS AND CLEAR SKIES TONIGHT.
325 AM MST TUE FEB 17 2015 NORTH TO NORTHWEST FLOW HAS USHERED IN A COOLER AIRMASS OVER THE REGION TODAY. WARMER TEMPERATURES ARE FORECAST TO RETURN ON WEDNESDAY UNDER A BUILDING HIGH PRESSURE RIDGE. A LOW PRESSURE TROUGH IS FORECAST TO DIVE SOUTHWARD INTO THE WESTERN U.
409 AM MST TUE FEB 17 2015 NORTHWEST FLOW OVER THE HIGH PLAINS WILL STRENGTHEN TODAY BETWEEN HUDSON BAY LOW AND WEST COAST RIDGE. A WEAK SHORT WAVE TROUGH WILL ALSO MOVE ACROSS SOUTH CENTRAL NEBRASKA AROUND 18Z.
946 AM EST TUE FEB 17 2015 HIGH PRESSURE BRIEFLY BUILDS IN TODAY. A COLD FRONT WILL MOVE ACROSS THE REGION WEDNESDAY.
425 AM CST TUE FEB 17 2015 COLD FRONT WELL INTO GULF. DIRTY NW FLOW AROUND DEEP LOW PRESSURE OVER EASTERN GREAT LAKES WILL KEEP SOME CLOUD STREAKS IN AREA. AS WELL AS A RETURN TO LIGHT SW WINDS TO KEEP TEMPS FROM FURTHER COOLING BEFORE ANOTHER REINFORCING COLD FRONT ARRIVES WEDNESDAY. ALTHOUGH MAY LINGER CLOSER TO FREEZING MARK IN EAST TX.
948 AM EST TUE FEB 17 2015 SHOWERS ARE IN PLACE ACROSS LEVY COUNTY THIS MORNING AND WILL SPREAD SOUTH ACROSS THE AREA THROUGH THE DAY AS A COLD FRONT PUSHES INTO THE AREA. THE RAIN ALONG AND BEHIND THE FRONT WILL LINGER THROUGH THE OVERNIGHT HOURS AND THEN CLEAR WEDNESDAY MORNING AS COLD AND DRY AIR MOVES DOWN THE STATE UNDER HIGH PRESSURE. A COLD FRONT IS APPROACHING THE WATERS THIS MORNING AND WILL MOVE THROUGH THE AREA LATER TODAY AND INTO TONIGHT WITH SHOWERS AND A FEW THUNDERSTORMS EXPECTED.
330 AM PST TUE FEB 17 2015 HIGH PRESSURE OVER CALIFORNIA WILL KEEP DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES ACROSS THE REGION THROUGH THE WEEK. THE HIGH PRESSURE RIDGE STILL THE DOMINATE FEATURE THIS MORNING AS FOG CONCERNS EXIST OVER THE SAN JOAQUIN VALLEY. THE RIDGE WILL START TO BREAK DOWN TOWARD THE END OF THE WEEK.
A ROBUST COLD FRONT WILL DROP ACROSS THE EASTERN GULF OF MEXICO.
FREEZING TEMPS RETURN WED-THU NIGHTS. NO CHANGE TO ONGOING FORECAST AS WIDESPREAD RAIN SHIELD ASSOCIATED WITH COLD FRONT WILL SLOWLY PUSH THROUGH THE AREA. BUT WILL REMAIN JUST ABOVE FREEZING AND DO NOT EXPECT ANY BLACK ICE PROBLEMS ACROSS INLD SE GA. MIN TEMPS TO FALL INTO THE LOWER 40S ALONG THE COAST AND REMAINDER OF NE FL AS THE PCPN ENDS.
639 AM EST TUE FEB 17 2015 HIGH PRESSURE WILL WORK THROUGH THE OHIO VALLEY EARLY TODAY PROVIDING DRY WEATHER AND VERY COLD TEMPERATURES. DEEP FULL LATITUDE TROF TO SETTLE INTO THE GREAT LAKES AND EASTERN CONUS. INITIAL S/W AND ASSOCIATED SFC COLD FRONT TO PUSH INTO WEST CENTRAL OHIO BY EVENING. HIGHLY AMPLIFIED MID/UPR LEVEL FLOW PATTERN WITH DEEP TROF SETTLING INTO THE EASTERN CONUS. SFC COLD FRONT OVER NW OHIO AT EVENING TO SWEEP SE THRU ILN/S FA TONIGHT. RANGING FROM THE SINGLE DIGITS NORTH TO THE LOWER TEENS SOUTH.
A STRONG RIDGE OF HIGH PRES OVER THE REGION TODAY WILL WEAKEN SOME. OFFSHORE FLOW WILL REDEVELOP OVER THE WEEKEND AGAIN AS THE RIDGE REBUILDS. TODAY THE AREA REMAINS DOMINATED BY THE STRONG RIDGE OF HIGH PRES PRES ALOFT. THE RIDGE IS EXPECTED TO BEGIN TO WEAK SOME TODAY. WED NIGHT INTO THE THU MODELS INDICATE RIDGE BEGINNING TO REBUILD OFFSHORE. MOISTURE AT THIS POINT REMAINS PRIMARILY IN THE LOW LEVELS.