Aikyam-Lab/Synoptic-Bench huggingface dataset:
ITS ARRIVAL INTO THE HIGHWAY 83 CORRIDOR IS A BIT LATER. HEAVY RAINFALL ASSOCIATED WITH STRONG THUNDERSTORMS WILL BE THE HIGHLIGHT IN THE SHORT TERM PERIOD. SPLIT FLOW PATTERN WITH A DIRTY MID LEVEL RIDGE OVER THE GREAT PLAINS. THE CURRENT ENSEMBLE AND DETERMINISTIC MODELS ARE PROJECTING AN UPPER LEVEL TROUGH.
1143 PM CDT FRI JUN 5 2015 HIGH PRESSURE CONTINUES TO DOMINATE THE WEATHER. LOOKS LIKE ANOTHER DRY DAY ON SATURDAY FOR A MAJORITY OF SOUTHEAST TEXAS WITH MID/UPPER LEVEL HIGH PRESSURE IN CONTROL. WITH THE MAIN FORECAST HIGHLIGHT CENTERING AROUND RISING TEMPERATURES /AND HEAT INDICES/ WITH UPPER RIDGING IN PLACE OVER THE REGION. AFTERNOON WATER VAPOR IMAGERY SHOWED THE UPPER RIDGE SPRAWLED ACROSS THE SOUTHERN PLAINS. INCREASING SUBSIDENCE ON SATURDAY AS THE UPPER RIDGE SHIFTS FARTHER OVER THE REGION WILL LIMIT AFTERNOON RAIN CHANCES ALONG THESE FEATURES WITH INCREASING HEIGHTS ALLOWING AFTERNOON HIGH TEMPERATURES TO CLIMB A FEW DEGREES HIGHER THAN TODAY INTO THE LOW TO MID 90S.
1043 PM EDT FRI JUN 5 2015 SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPED AROUND THE LOWER AND MIDDLE KEYS EARLIER THIS EVENING WITHIN A WARM. AND LIGHT BUT CONFLUENT WINDS IN THE LOW LEVELS.
1110 PM EDT FRI JUN 5 2015 A COLD FRONT WILL MOVE NORTHWEST TO SOUTHEAST THROUGH THE REGION OVERNIGHT. HIGH PRESSURE WILL BUILD IN FOR THE WEEKEND.
946 PM EDT FRI JUN 5 2015 HIGH PRESSURE CENTERED OVER THE NORTHEASTERN UNITED STATES WILL RIDGE SOUTH ALONG THE EASTERN SEABOARD THROUGH THE WEEKEND.
944 PM EDT FRI JUN 5 2015 A COLD FRONT WILL CLEAR THE LOCAL EARLY FRIDAY EVENING. HIGH PRESSURE WILL BUILD SOUTHEAST ACROSS LOWER ONTARIO CANADA INTO NEW YORK STATE BY SATURDAY NIGHT.
635 PM CDT FRI JUN 5 2015 UPPER LEVEL HIGH PRESSURE WILL REMAIN OVER THE REGION AND KEEP VFR CONDITIONS AT ALL NORTH TEXAS TAF SITES THROUGH SATURDAY AFTERNOON.
700 PM CDT FRI JUN 5 2015 COLD FRONT CONTINUES TO SAG SLOWLY SOUTHWARD INTO CENTRAL ILLINOIS THIS AFTERNOON. A COOLER/DRIER AIRMASS WILL SETTLE INTO THE AREA WITH OVERNIGHT LOW TEMPERATURES RANGING FROM THE MIDDLE 50S FAR NORTH TO THE LOWER 60S SOUTH OF I-70. HIGH PRESSURE RIDGE WILL DOMINATE THE AREA SATURDAY AS THE PLAINS WEATHER SYSTEM MAKES ITS WAY TO THE EAST. SATURDAY NIGHT THIS RIDGE WILL SLIDE EAST WHILE THE PLAINS COLD FRONT WORKS EAST.
WE ARE STILL LOOKING AT RIDGE AMPLIFICATION NORTHWARD ACROSS THE CENTRAL PLAINS. WHILE A LARGE CLOSED LOW ROTATES OVER SOUTHERN CALIFORNIA AND NEVADA. BROAD TROUGHING REMAINS ALONG THE ATLANTIC COAST.
1149 PM CDT FRI JUN 5 2015 WEAK COLD FRONT HAS SLIPPED SOUTH OF MOST OF THE FORECAST AREA, ALTHOUGH OUR COUNTIES IN SOUTHEAST ILLINOIS WILL HAVE THE FRONT IN THE VICINITY FOR A BIT LONGER. HIGH PRESSURE WILL BUILD INTO THE AREA BEHIND THE FRONT, PROVIDING QUIET AND SLIGHTLY COOLER WEATHER THROUGH THE NIGHT AND BEYOND. COLD FRONT CONTINUES TO SAG SLOWLY SOUTHWARD INTO CENTRAL ILLINOIS THIS AFTERNOON. A COOLER/DRIER AIRMASS WILL SETTLE INTO THE AREA WITH OVERNIGHT LOW TEMPERATURES RANGING FROM THE MIDDLE 50S FAR NORTH TO THE LOWER 60S SOUTH OF I-70. HIGH PRESSURE RIDGE WILL DOMINATE THE AREA SATURDAY AS THE PLAINS WEATHER SYSTEM MAKES ITS WAY TO THE EAST. SATURDAY NIGHT THIS RIDGE WILL SLIDE EAST WHILE THE PLAINS COLD FRONT WORKS EAST.
/ISSUED 401 PM CDT FRI JUN 5 2015/ AN UPPER LEVEL RIDGE WILL REMAIN OVER THE AREA THIS WEEKEND WITH SLOWLY INCREASING TEMPERATURES CONTINUING.
1053 PM EDT FRI JUN 5 2015 A COLD FRONT WILL MOVE THROUGH THE REGION OVERNIGHT WITH A CHANCE OF SHOWERS.
1021 PM MDT FRI JUN 5 2015 LITTLE CHANGE TO FORECAST THINKING AS MOISTURE CONTINUES STREAMING UP FROM THE SOUTH THANKS TO TS ANDRES AND THE CLOSED LOW OVER SRN CALIFORNIA.
LIKELY IN RESPONSE TO THE EARLIER CONVECTIVE SHOWERS AND THUNDERSTORMS OVER THE CHEYENNE RIDGE EARLY THIS AFTERNOON STABILIZING THE ATMOSPHERE.
TS DEVELOPMENT ENHANCED BY WEAK MID LEVEL TROUGH THAT SWUNG BY TO THE NORTH LATE THIS AFTN. MORE SO IN THE SOUTH AS CIRRUS SPILLS INTO S FL DOWNSTREAM OF TROF W OF CUBA. BUT AGAIN HIGH CLOUDS FROM TROUGH TO THE SOUTH MAY LIMIT INSOLATION AND STORM COVERAGE.
959 PM EDT FRI JUN 5 2015 A COLD FRONT OVER QUEBEC WILL DROP SOUTH INTO THE REGION TONIGHT.
/ISSUED 403 PM EDT FRI JUN 5 2015/ BROAD TROUGHING CONTINUES ACROSS THE SOUTHEAST STATES WITH THE DEEPEST TROPICAL MOISTURE AND SYNOPTIC-SCALE LIFT DISPLACED JUST TO OUR EAST. THE LOW LEVEL STEERING FLOW WILL BE EASTERLY. MODEL CONSENSUS SHOWS RIDGING BUILDING ACROSS FLORIDA. WHILE A TROUGH DEVELOPS OVER THE LOWER MISSISSIPPI VALLEY INTO THE WESTERN GULF OF MEXICO.
/ISSUED 309 PM CDT FRI JUN 5 2015/ AN UPPER LEVEL RIDGE WILL KEEP THE WEATHER WARM AND DRY THROUGH THE WEEKEND WITH HIGH TEMPERATURES REACHING INTO THE LOWER 90S.
1221 AM EDT SAT JUN 6 2015 A COLD FRONT OVER QUEBEC WILL DROP SOUTH INTO THE REGION OVERNIGHT.
HIGH PRESSURE ALOFT WILL START TO BRING A DRIER AND WARMER AIR MASS INTO SE OREGON ON SATURDAY.
HIGH PRESSURE ALOFT WILL PREVAIL OVER THE REGION THROUGH THIS WEEKEND FOR SUNNY DAYS AND THE WARMEST WEATHER SO FAR THIS YEAR. BRINGING GRADUALLY COOLER WEATHER ALONG WITH SOME NIGHT AND MORNING CLOUDS. AN UPPER LEVEL RIDGE IS BUILDING INTO THE REGION THIS EVENING. SKIES WILL BE CLEAR EXCEPT FOR LATE NIGHT AND MORNING STRATUS ALONG THE IMMEDIATE COAST AND POSSIBLY PART WAY DOWN THE STRAIT AND IN THE LOWER CHEHALIS VALLEY.
WEAK LOW PRESSURE TROF WILL REMAIN OVER INLAND AREAS WHILE A WEAK NORTHERLY STEERING FLOW WILL PUSH STORMS TO THE SOUTH AND WILL ALLOW THE BEST COVERAGE OF STORMS ACROSS INLAND NE FL AS BOTH SEA BREEZE FRONT PUSH INLAND DURING THE MID-LATE AFTERNOON HOURS AND POPS IN THE 30-40% RANGE ARE EXPECTED SOUTH OF I-10. THE NORTHERLY FLOW AND SLOW PROGRESSION OF SEA BREEZE INLAND WILL ALLOW FOR MAX TEMPS INTO THE LOWER 90S INLAND AND UPPER 80S COAST. WARMER TEMPS ALOFT IN THE -7/-8C RANGE AT 500MB SHOULD CONTINUE TO HELP LIMIT SEVERE STORM ACTIVITY WITH JUST A FEW BECOMING STRONG ACROSS NE FL DURING THE AFTERNOON/EVENING HOURS.
MAYBE SOME PATCHY FOG AFTER MIDNIGHT ONCE THE HIGH CLOUDS CLEAR OUT. HIGH PRESSURE FROM THE NORTH WILL BE IN CONTROL.
908 PM EDT FRI JUN 5 2015 SHOWER AND THUNDERSTORM CHANCES WILL DIMINISH AS A WEAK COLD FRONT CROSSES THE REGION TONIGHT.
748 PM EDT FRI JUN 5 2015 A COLD FRONT WILL PUSH SOUTHEAST ACROSS THE REGION THROUGH EARLY SATURDAY. HIGH PRESSURE WILL BUILD SOUTHEAST INTO THE STATE SATURDAY.
1035 PM EDT FRI JUN 5 2015 A COLD FRONT WILL PUSH SOUTHEAST ACROSS THE REGION OVERNIGHT AND EARLY SATURDAY. HIGH PRESSURE WILL BUILD SOUTHEAST INTO THE STATE SATURDAY.
HIGH PRESSURE WILL EXTEND INTO MID TN FROM THE NORTH. MAYBE SOME PATCHY FOG AFTER MIDNIGHT ONCE THE HIGH CLOUDS CLEAR OUT.
600 PM MDT FRI JUN 5 2015 00Z TAF CYCLE ABUNDANT MOISTURE WILL CONTINUE TO FLOW NORTHEASTWARD INTO NM AHEAD OF A UPPER LEVEL LOW SPINNING OVER SRN CALIFORNIA.
1212 AM EDT SAT JUN 6 2015 A WEAK COLD FRONT WILL EXIT THE REGION OVERNIGHT.
912 PM EDT FRI JUN 5 2015 LOW PRESSURE EAST OF THE VIRGINIA CAPES WILL MOVE NORTHEAST ALONG THE MID-ATLANTIC COAST TONIGHT. A WEAK COLD FRONT WILL CROSS THE AREA SATURDAY.
-HOWERTON WL ONCE AGN BE WATCHING FOR TSRA TO DVLP OVER CNTRL KS LATER TNGT AS NEARLY STATIONARY FRONT DRAPED ALMOST IN AN E-W MANNER FROM ERN KS TO WRN KS TRANSITIONS INTO A WARM FRONT.
801 PM EDT FRI JUN 5 2015 A COLD FRONT WILL MOVE OUT OF CANADA TONIGHT AND ENHANCE THE POTENTIAL FOR SHOWERS AND MAYBE A THUNDERSTORM. SHOWERS WILL COME TO AN END AND HIGH PRESSURE WILL BUILD DOWN FROM CANADA.
711 PM EDT FRI JUN 5 2015 A COLD FRONT WILL CLEAR THE LOCAL EARLY FRIDAY EVENING. HIGH PRESSURE WILL BUILD SOUTHEAST ACROSS LOWER ONTARIO CANADA INTO NEW YORK STATE BY SATURDAY NIGHT.
LOOKS LIKE ANOTHER DRY DAY ON SATURDAY FOR A MAJORITY OF SOUTHEAST TEXAS WITH MID/UPPER LEVEL HIGH PRESSURE IN CONTROL. WITH THE MAIN FORECAST HIGHLIGHT CENTERING AROUND RISING TEMPERATURES /AND HEAT INDICES/ WITH UPPER RIDGING IN PLACE OVER THE REGION. AFTERNOON WATER VAPOR IMAGERY SHOWED THE UPPER RIDGE SPRAWLED ACROSS THE SOUTHERN PLAINS. INCREASING SUBSIDENCE ON SATURDAY AS THE UPPER RIDGE SHIFTS FARTHER OVER THE REGION WILL LIMIT AFTERNOON RAIN CHANCES ALONG THESE FEATURES WITH INCREASING HEIGHTS ALLOWING AFTERNOON HIGH TEMPERATURES TO CLIMB A FEW DEGREES HIGHER THAN TODAY INTO THE LOW TO MID 90S.
816 PM EDT FRI JUN 5 2015 A COLD FRONT WILL MOVE OUT OF CANADA TONIGHT AND ENHANCE THE POTENTIAL FOR SHOWERS AND MAYBE A THUNDERSTORM. SHOWERS WILL COME TO AN END AND HIGH PRESSURE WILL BUILD DOWN FROM CANADA.
A COOLER AND DRIER WEATHER PATTERN WILL TAKE SHAPE OVER THE NEXT COUPLE OF DAYS AS HIGH PRESSURE BUILDS EAST FROM THE PLAINS INTO THE MISSISSIPPI AND OHIO VALLEYS. HIGH TEMPERATURES TODAY WILL ONLY REACH THE LOWER 70S.
1025 AM EDT TUE MAY 12 2015 A COLD FRONT WILL MOVE ACROSS THE MID-ATLANTIC THIS AFTERNOON AND EVENING.
404 AM PDT Tue May 12 2015 Cooler and more unsettled conditions expected this week across the interior of NorCal as several weather systems affect the region. A few showers continue across Shasta and northern Tehama Counties associated with a deep closed low centered over southwest Oregon. Temperatures through the valley are in the upper 40s to mid 50s, about 2-5 degrees cooler compared to 24 hours ago. The trend toward cooler and more unsettled weather across the region will continue through the end of the week as the trough along the west coast deepens. Showers and thunderstorms will be confined to the far northern portion of the state today as the low tracks eastward along the California/Oregon border before lifting back to the north into the PacNW tonight.
1122 AM CDT TUE MAY 12 2015 TO BUMP HIGHS A BIT SOUTH AND TWEAK WINDS LIGHT OVERRUNNING TYPE RAIN SHOWERS COULD THUNDER HERE OR THERE AS AN UPPER LOW OVER CENTRAL TEXAS DRIFTS NORTHEAST WHILE SHEARING OUT.
Radar and Satellite show nuisance mesoscale like disturbances rotating around the edges of a larger area of low pressure centered just to the southwest of Eastern Washington and Northern Idaho this morning.
WE WILL HAVE N/NW WINDS TODAY AS THE COLD FRONT MOVED OUT OF THE HUN CWA THIS MORNING. THE 12Z OHX SOUNDING DISPLAYED DRY AIR IN THE MID LEVELS AND THE UPPER LEVEL RIDGE IN THE ROCKIES WILL ENTRAIN ADDITIONAL DRY AIR INTO THE REGION TODAY. BEHIND THE COLD FRONT. COLD FRONT HAS PUSHED TO THE SE OF BOTH HSV/MSL WITH LGT NW FLOW REPORTED AT BOTH AIRPORTS.
1028 AM EDT TUE MAY 12 2015 WINDY CONDITIONS CAN BE EXPECTED THIS AFTERNOON IN THE WAKE OF A COLD FRONT THAT BROUGHT COOLER AND DRIER AIR TO THE REGION LAST NIGHT.
THE FLORIDA PENINSULA AND THE FLORIDA KEYS LIE ON THE WEST SIDE OF AN UPPER TROPOSPHERIC TROUGH IN THE WESTERN CARIBBEAN. THE AXIS OF THIS TROUGH BISECTS CENTRAL CUBA. THE LOWER TROPOSPHERE CONSISTS OF A BROAD ANTICYCLONIC CIRCULATION ACROSS THE WESTERN ATLANTIC.
MOST OF THE STATE IS STILL SHROUDED IN STRATO-CU WRAPPING CYCLONICALLY AROUND A LOW PRESSURE CENTER NOW MOVING INTO SOUTHERN ONTARIO.
/ISSUED 636 AM CDT TUE MAY 12 2015/ THE COLD FRONT HAS EXITED THE STATE TO THE SOUTH. HIGH PRESSURE WILL BE OVER THE AREA TODAY WITH NORTH AND NORTHEAST WINDS.
CURRENTLY, A MID/UPPER LEVEL RIDGE AXIS STRETCHES ACROSS SOUTH FLORIDA FROM THE GULF OF MEXICO INTO THE ATLANTIC AND THIS WILL MOVE LITTLE THROUGH THE UPCOMING WEEKEND. A LOW LEVEL ATMOSPHERIC TROUGH IS ALSO MOVING ACROSS SOUTH FLORIDA THIS MORNING AND THE FLORIDA KEYS WITH SCATTERED SHOWERS AND A FEW THUNDERSTORMS OVER THE ATLANTIC WATERS. THIS WILL ALSO BE THE FOCUS FOR SCATTERED TO NUMEROUS THUNDERSTORMS TO DEVELOP THIS AFTERNOON OVER THE INTERIOR PORTIONS WITH AN INCREASE IN MOISTURE ASSOCIATED WITH THE TROUGH.
THE LOW PRESSURE CENTER IS IN THE NORTHERN GREAT LAKES EARLY TODAY. TO BRING A FEW GUSTS TO THE LOWER 30 MPH RANGE. 500MB RIDGE AXIS WILL SHIFT FROM SW TO NE THROUGH THE UPPER MIDWEST BRINGING QUIET AND WARM WEATHER TO THE REGION. TEMPS ARE FORECAST TO RANGE FROM THE LOW 60S NEAR FREEPORT TO NEAR 70 F AT BURLINGTON.
LOOKING LIKE THERE WILL BE SOME DECREASE IN THE HIGH LEVEL MOISTURE LATER TODAY. MOISTURE AND PRECIPITATION WILL MOVE INTO THE MOUNTAINS FIRST WITH A LEE SIDE TROUGH DOMINATING THE NE COLORADO PLAINS. TEMPERATURES ON WEDNESDAY WILL BE SLIGHTLY COOLER WITH HIGHS IN THE UPPER 60S.
623 AM CDT TUE MAY 12 2015 UPPER LEVEL LOW WILL CONTINUE TO PUSH EASTWARD THROUGH THE DAY TODAY. AS RIDGE SLIDES EAST ON WEDNESDAY.
844 AM EDT TUE MAY 12 2015 OUR RECENT STRING OF WARM DAYS AND MILD NIGHTS WILL BE CUT TODAY AS A STRONG COLD FRONT PUSHES EAST ACROSS THE STATE. COOLER.
HIGH PRESSURE WILL SETTLE INTO THE REGION TONIGHT WITH SKC SKIES AND LIGHT NE WINDS.
12Z RAP SHOWS A BIT OF SBCAPE OVER THE HIGHER TERRAIN AS DECENT SOUTHERLY FLOW FEEDS MOISTURE POOLING ALONG THE BOUNDARY SO HAVE ADDED SMALL POPS LATER THIS AFTERNOON FOR THOSE AREAS. TODAY THROUGH WEDNESDAY NIGHT WESTERN CONUS UPPER LEVEL TROUGHING ONGOING THIS MORNING WITH A LOCAL WAA RESPONSE. ONGOING PRESSURE FALLS PER THE ADVANCING WESTERN CONUS UPPER TROUGH WILL SUPPORT A LLJ TONIGHT WITH SOME FORCING FOR ASCENT PER A SLOW MOVING NW CONUS UPPER TROUGH GRAZING THE NORTHERN PLAINS TONIGHT. LEE SIDE TROUGH WILL SHIFT EAST ACROSS THE FA WED MORNING AND STALL WITH THE SOUTHERN PLAINS IMPULSE SHIFTING NORTH. STRONG SE WINDS UNDER MAY SUN SHOULD MIX WARMER AIR DOWN WITH NO PROBLEM.
THERMAL ADVECTION FAIRLY NEUTRAL HOWEVER SOLAR SHOULD ALLOW TEMPERATURES TO RECOVER INTO THE LOW/MID 50S. NEXT LONG WAVE TROUGH TO OUR WEST SHIFTS EAST FROM NORTHERN ROCKIES SE TO TEXAS RESULTING IN INCREASING MID LEVEL SW FLOW. AS IT DOES BROAD LOW PRESSURE DEVELOPS OVER NORTHERN/CENTRAL ROCKIES WITH E-W BOUNDARY SETTING UP FROM WYO ACROSS SD ON NOSE OF STRONGER SOUTHERLY FLOW. LEAD IMPULSE EJECTING FROM THE TROUGH WILL INTERACT WITH RESPECTABLE WARM ADVECTION TONIGHT.
ACTUALLY COLD FRONT WITH DISTINCT WIND SHIFT AND LOWERED DEWPOINTS IS JUST TO OUR NORTHWEST. AS IT AND THE ACTUAL COLD FRONT SLOWLY SHIFT SOUTHWARD. COOL ADVECTION WILL KEEP HIGHS IN THE LOW TO MID 80S.
933 AM PDT TUE MAY 12 2015 COOLER WITH GUSTY WEST WINDS IN THE MOUNTAINS AND DESERTS THIS AFTERNOON AND EVENING AS A WEAK TROUGH MOVES THROUGH THE REGION.
HIGH PRESSURE WILL SETTLE INTO THE REGION TONIGHT WITH SKC SKIES AND LIGHT NE WINDS. OUR SLOW-MOVING IMPOTENT, MOISTURE-STARVED, SFC FRONT HAD JUST BARELY PUSHED INTO NORTHWEST TN BY 2 AM, AND IT LOOKS LIKE ABOUT THE SOUTHEASTERN HALF OF OUR AREA WILL START THE DAY IN A MILD PRE-FRONTAL CONDITION, WITH SUNRISE TEMPERATURES IN THE LOWER AND MIDDLE 60S. THUS, WILL BE GOING A FEW DEGREES WARMER THAN THE WARMEST MOS NUMBERS FOR HIGH TEMPS OVER THAT AREA FOR TODAY. EXPECT SOME DRIER AIR AND SLIGHTLY COOLER TEMPS TO PENETRATE AT LEAST OUR WESTERN COUNTIES BY SUNRISE, WITH LOWS EXPECTED TO REACH AT LEAST THE UPPER 50S IN AREAS NEAR THE TN RIVER. HIGH PRESSURE BUILDS OVER THE AREA DURING THE NEXT FEW DAYS, GIVING US SOME PLEASANTLY WARM TEMPERATURES AND LOWER HUMIDITIES.
703 AM CDT TUE MAY 12 2015 FOR 12Z TAFS /ISSUED 303 AM CDT TUE MAY 12 2015/ LATEST WATER VAPOR IMAGERY SHOWS AN UPPER LOW OVER THE GREAT LAKES REGION. WITH AN AMPLIFIED RIDGE SITUATED OVER THE ROCKIES. THE PREVIOUSLY ADVERTISED SURFACE COLD FRONT EXTENDS FROM MICHIGAN. THE AXIS OF A PRE-FRONTAL TROUGH WAS PUSHING EAST ACROSS THE AREA. THE UPPER LEVEL RIDGE WILL BUILD IN BEHIND THE FRONT. AS THE RIDGE AMPLIFIES AND BUILDS INTO THE REGION AND SOUTHERLY FLOW RETURNS.
ANTICIPATE HIGH ENOUGH CAPE VALUES WILL LINGER OVER THE REGION TO MAINTAIN THE POTENTIAL FOR ISOLD SEVERE STORMS AS THE PVA ALOFT AND THE DAYTIME HEATING INCREASE THE LOW LEVEL CONVERGENCE.
High pressure was centered over the central Plains and influencing the weather across the Ozarks early this morning. Clear conditions and cooler temperatures in the 40s to low 50s and dew points in the low to mid 40s. For today and tonight, tranquil conditions are expected as high pressure at the surface moves across the region from the central Plains while upper ridging builds in from the west-southwest. Temperatures today should be similar to yesterday, albeit slightly cooler in the eastern Ozarks with readings generally in the mid to upper 60s and approaching the low 70s out west.
653 AM CDT TUE MAY 12 2015 LOW PRESSURE DEPARTING TO THE EAST THIS MORNING RESULTING IN LIGHT RAIN AND SNOW SHOWERS ON THE BACK END. THOUGH EXPECT SOME LOW-TOPPED SHOWERS ACROSS NORTHEAST MINNESOTA DUE TO SOME WEAK INSTABILITY DEVELOPING DUE TO COLD AIR BEING ADVECTED IN BEHIND THE LOW. ON WEDNESDAY A WARM FRONT WILL DEVELOP OVER A BAROCLINIC ZONE IN THE EASTERN DAKOTAS WHICH WILL MOVE EASTWARD INTO MINNESOTA. WARMER WEDNESDAY. AND WITH CLOUD COVER IN PLACE TEMPS WILL BE DEPENDENT ON THE STRENGTH OF WARM AIR ADVECTION THAT OCCURS AS THE WARM FRONT MOVES NORTH. CURRENT FORECAST MIGHT BE A LITTLE TOO OPTIMISTIC WITH REGARDS TO WARMTH WITH HIGHS IN THE LOW TO MID 50S.
Quiet weather is anticipated to continue for today and tonight as the ridge of high pressure moves over the area. There remains little or no warm air advection in the low levels for tonight even though winds will have a southerly component. Low level moisture is expected to begin moving north for Wednesday and Wednesday night in response to a mid level trough coming across the southern Rockies. This causes an area of low pressure to deepen over the high plains and increase southerly flow from the gulf of Mexico.
949 AM EDT TUE MAY 12 2015 RIDGE AXIS WILL REMAIN ACROSS NORTH FLORIDA TODAY WHICH WILL KEEP A MODERATE LOW LEVEL SOUTHEASTERLY BREEZE ACROSS THE REGION.
1136 AM EDT TUE MAY 12 2015 OUR RECENT STRING OF WARM DAYS AND MILD NIGHTS WILL BE CUT TODAY AS A STRONG COLD FRONT PUSHES EAST ACROSS THE STATE. COOLER.
MEAN TROUGH AXIS WILL REMAIN TO THE WEST ON WEDNESDAY WITH PWATS STILL AROUND 1.
733 AM EDT TUE MAY 12 2015 A COLD FRONT WILL MOVE ACROSS THE REGION TODAY. HIGH PRESSURE WILL THEN BUILD IN BEHIND THE FRONT AND BRING FAIR WEATHER TO THE AREA THROUGH THE LATTER PORTION OF THE WORKWEEK.
1052 AM EDT TUE MAY 12 2015 A COLD FRONT WILL MOVE ACROSS THE REGION TODAY. HIGH PRESSURE WILL THEN BUILD IN BEHIND THE FRONT AND BRING FAIR WEATHER TO THE AREA THROUGH THE LATTER PORTION OF THE WORKWEEK.
AS HIGH PRESSURE AND DRYER AIR MOVE SE INTO THE REGION. COLD FRONT IS NOW WORKING ACROSS NORTHERN KENTUCKY AND SHOULD CONTINUE TO SINK SOUTHWARD THIS MORNING. COLD FRONT IS WORKING SOUTH TOWARD THE OHIO RIVER PRESENTLY. THE COLD FRONT MEANWHILE. GIVING WAY TO A BEAUTIFUL AFTERNOON AS DEWPOINTS CRASH INTO THE 40S AND TEMPERATURES ONLY RECOVER INTO THE LOW TO MID 70S. HIGH PRESSURE WILL BUILD INTO THE AREA TONIGHT. WITH WINDS SUBSIDING AND TEMPERATURES FALLING INTO THE LOW TO MID 40S. ANOTHER PLEASANT DAY IS ANTICIPATED FOR WEDNESDAY AS WE REMAIN UNDER THE INFLUENCE OF HIGH PRESSURE WHICH SHOULD PROVIDE PLENTY OF SUNSHINE ONCE AGAIN. A SMALL TO MODERATE RIDGE/VALLEY TEMPERATURE SPLIT IS FAVORED ON WED NIGHT ESPECIALLY FOR EASTERN VALLEY LOCATIONS.
A CLOSED UPPER LOW HAS MOVED SOUTH TO SOUTHEAST INTO SOUTHERN OREGON AND NORTHERN CALIFORNIA AND WILL NOW SHIFT EASTERLY ACROSS THE AREA TODAY. THE NEXT TROUGH. ACTUALLY AN OPEN WAVE IN ADVANCE OF A BROADER TROUGH. THE WAVE WILL ROTATE INTO NORTHERN OREGON LATER WEDNESDAY NIGHT AHEAD OF THE BROAD UPPER TROUGH.
SHORT TERM: (Through Late This Afternoon) Early this morning, an upper level TROF was over the Upper MS Valley--the same storm system that was over the SW CONUS a few days ago and gave us our wet weekend--and was passing harmlessly to our north. The TROF will continue to accelerate away to the E-NE, with NW upper flow firmly in place by 12z.
A LINGERING UPPER LEVEL TROUGH BRINGS SOME ADDITIONAL CLOUDS AND LIGHT SHOWERS FOR THE NORTHERN MOUNTAINS LATE TONIGHT.
741 AM EDT TUE MAY 12 2015 OUR RECENT STRING OF WARM DAYS AND MILD NIGHTS WILL BE CUT TODAY AS A STRONG COLD FRONT PUSHES EAST ACROSS THE STATE. COOLER.
1123 AM EDT TUE MAY 12 2015 A COLD FRONT WILL CROSS THE AREA TODAY. DRY WEATHER RETURNS THROUGH THE MIDDLE OF THE WEEK UNDER HIGH PRESSURE. WATER VAPOR IMAGERY SHOWS AN UPPER TROUGH CROSSING THE OHIO VALLEY WITH A PLUME OF HIGHER PRECIPITABLE WATER EXTENDING FROM THE WESTERN GULF COAST ACROSS THE SOUTHEASTERN STATES TO THE MID ATLANTIC. COOLER AND DRIER AIR WILL BUILD INTO THE REGION TONIGHT AS HIGH PRESSURE BUILDS IN FROM THE EAST. PLENTY OF SUN AND LESS HUMID CONDITIONS ARE EXPECTED ON WEDNESDAY WITH MAX TEMPERATURES ABOUT 10 DEGREES COOLER THAN TODAY IN THE LOWER 80S AND NO CHANCE OF RAIN DUE TO DRIER AIR.
Latest 850-hPa temp progs show continued thermal troughing across the area with values ranging from roughly 10C across the west. continued sfc ridging into the Lwr Missouri Valley will delay return flow moisture advection until later in the day on Wednesday when aforementioned upper disturbance ejects east from the southern Rockies into the the southern High Plains. Rain chances will continue to increase heading into Wednesday night as main upper wave begins moving overhead and low-level moisture advection increases thanks to a strengthening low- level jet that will be ascending a northward lifting warm front positioned to our southwest.
HIGH PRESSURE WILL BUILD IN BEHIND EXITING COLD FRONT.
DRIER AIR WITH BUILDING HIGH PRESSURE HAS STARTED TO WORK INTO THE MIDSOUTH EARLY THIS MORNING. TEMPERATURES TOMORROW WILL BE A FEW DEGREES WARMER.
PERHAPS A BETTER CHANCE LATER TONIGHT WHEN THE LOW LEVEL JET KICKS UP. BY WEDNESDAY AFTERNOON HOWEVER A WARM FRONT WILL BE LIFTING NORTHWARD WITH DEW POINTS INCREASING INTO THE LOWER 50S ACROSS MOST OF THE CWA.
HIGH PRESSURE BUILDS IN BEHIND IT. 31 COOL/DRY HIGH PRESSURE WILL PERSIST WEDNESDAY NIGHT AND RESULT IN NEAR OR SLIGHTLY BELOW SEASONABLE LOWS.
HIGH PRESSURE WILL BUILD IN FOR THE DAY WITH TEMPS WARMING IN TO THE UPPER 70S AND LOWER 80S. CHATTANOOGA AIRPORT, TN 82 53 81 57 / 10 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 80 51 78 54 / 20 0 0 0 OAK RIDGE, TN 80 52 78 54 / 10 0 0 0 TRI CITIES AIRPORT, TN 79 46 75 48 / 20 0 0 0.
LATEST SATELLITE AND UPPER AIR ANALYSIS SHOWED THE REGION UNDER THE INFLUENCE OF MEAN RIDGING ESP IN THE LOWER TO MID LEVELS OF THE ATMOSPHERE. MORNING SURFACE CHART SHOWED A WEAK COLD FRONT EXTENDING FROM NORTHWEST MS ACROSS SOUTHERN AR. THIS BOUNDARY WILL SINK SLOWLY SOUTHEAST KEEPING THE HIGHWAY 82 CORRIDOR DRY TODAY.
BY WEDNESDAY AFTERNOON HOWEVER A WARM FRONT WILL BE LIFTING NORTHWARD WITH DEW POINTS INCREASING INTO THE LOWER 50S ACROSS MOST OF THE CWA.
901 AM PDT Tue May 12 2015 Cooler and more unsettled conditions expected this week across the interior of NorCal as several weather systems affect the region. An upper level closed low is currently spinning over the California/Oregon border. Elsewhere, breezy south to west winds will continue across the forecast area, strongest near the Delta and over the high Sierra. Temperatures will peak in the lower to mid 70s across the Valley, which is 5 to 10 degrees cooler than normal.
1142 AM EDT TUE MAY 12 2015 A COLD FRONT WILL CONTINUE TO MOVE THROUGH THE AREA EARLY THIS MORNING.
1055 AM EDT TUE MAY 12 2015 A WEAK COLD FRONT WILL CROSS OUR AREA TODAY.
636 AM CDT TUE MAY 12 2015 THE COLD FRONT HAS EXITED THE STATE TO THE SOUTH. HIGH PRESSURE WILL BE OVER THE AREA TODAY WITH NORTH AND NORTHEAST WINDS.
530 AM MDT TUE MAY 12 2015 04Z WATER VAPOR IMAGERY/RUC ANALYSIS INDICATES SHORT WAVE RIDGING IN PLACE ACROSS THE NORTHERN ROCKIES WITH STRONG CLOSED CIRCULATION MOVING SOUTH ACROSS THE WEST COAST.
TEMPERATURES WERE A BIT WARMER THAN FORECAST IN THE SOUTHEAST AND THEIR RISE SHOULD BE TEMPERED SOME ONCE THE THICKER MID/HIGH CLOUDS ARRIVE. WILL CONTINUE THRU THE DAY AS A COLD FRONT SLOWLY PUSHES SOUTHWARD ACROSS THE STATE.
A COLD FRONT WILL PROGRESS SOUTHEAST ACROSS CENTRAL NORTH CAROLINA THIS AFTERNOON AND EVENING. HIGH PRESSURE WILL BUILD INTO THE REGION FROM THE WEST ON WEDNESDAY. THE COLD FRONT SHOULD MAKE ITS WAY THROUGH THE CAROLINAS THIS EVENING AND OVERNIGHT. CLOSER TO THE UPPER LEVEL LOW. WITH HIGH PRESSURE TO THE SOUTH. WITH MORE CONFLUENCE IN THE LOWER LEVELS. PRE-FRONTAL TROUGH. OVERNIGHT LOWS IN THE LOW 50S NW TO LOW 60S SE.