Aikyam-Lab/Synoptic-Bench huggingface dataset:
Also, a cold front sliding down the Rocky Mountain Front may briefly produce breezy winds in Badrock Canyon this evening, but overall winds will not be that strong.
348 PM CST MON DEC 28 2015 WITH VARIOUS AIRSTREAMS CIRCULATING AROUND MAIN UPPERSYSTEM BOUND CLOSELY TO MAIN UPPER LOW. STILL GETTING SOME REPORTS OF LIGHT SNOW OR FREEZING DRIZZLE NOW. AND VERY WEAK VERTICAL MOTION MAY BE ENOUGH TO SQUEEZE OUT A FEW MORE SNOWFLAKES AND LIGHT FREEZING DRIZZLE INTO EARLY EVENING BEFORE BROADSCALE ISENTROPIC DOWNGLIDE BEGINS IN EARNEST. NEXT POTENTIAL FOR WINTRY WEATHER RETURNS ON TOMORROW NIGHT AS ANOTHER SHORT WAVE FEATURE ZIPS THROUGH LARGE SCALE TROUGH. SO IT WILL TAKE A LITTLE BIT OF TIME FOR THE LOW LEVELS TO SATURATE. TRENDED ON THE LOW SIDE OF GUIDANCE AS DIABATIC EFFECT ASSOCIATED WITH SUBLIMATION/MELTING WILL IMPACT TEMPERATURES DURING THE DAY AND RADIATIVE PROCESSES AT NIGHT.
A COLD LOW PRESSURE SYSTEM FROM THE NORTHWEST WILL BRING RAIN AND SNOW SHOWERS INTO TONIGHT.
834 AM PST MON DEC 28 2015 A COLD LOW PRESSURE SYSTEM FROM THE NORTHWEST WILL BRING A PERIOD OF OF SHOWERS LATE TODAY AND TONIGHT.
1101 AM CST MON DEC 28 2015 FOR 18Z TAFS /ISSUED 1002 AM CST MON DEC 28 2015/ THE APPROACHING COLD FRONT AS OF 16Z IS SOMEWHERE IN WESTERN MISSISSIPPI WITH THE LINE OF THUNDERSTORMS ALONG IT WEAKENING SIGNIFICANTLY AS OF 16Z WITH VERY LITTLE LIGHTNING AND NO SEVERE REPORTS COMING FROM THE LINE. WITH THE HIGH AMOUNT OF SHEAR ACROSS THE AREA. IF ANY STORMS CAN TAP INTO THE HIGHER INSTABILITY AIR.
Lingering low and mid clouds across SW KS this afternoon will gradually erode through this evening, in response to dry subsidence taking over behind the departing cyclone. Trough axis will approach SW KS during the late afternoon, with the primary vort max passing south of us across W TX. There is a chance of snow Tuesday night as the aforementioned upper level trough traverses the plains.
129 PM EST MON DEC 28 2015 A COLD FRONT TO OUR NORTH WILL MOVE SOUTHWARD INTO THE NORTHERN MIDLANDS THIS EVENING. ANOTHER COLD FRONT WILL MOVE INTO THE REGION FROM THE WEST ON TUESDAY.
A WEAK UPPER LEVEL TROUGH OVER WESTERN WASHINGTON WILL DRIFT SLOWLY EAST TODAY.
MPJ UPDATED 1755Z UPPER LEVEL TROUGH OVER PACIFIC NORTHWEST MOVES SLOWLY EAST WITH MOIST SOUTH TO SOUTHWEST FLOW ALOFT OVER MONTANA THROUGH LATE TUESDAY MORNING. WEAK COLD FRONT CURRENTLY OVER HI-LINE COUNTIES WILL CONTINUE TO MOVE FROM NORTH TO SOUTH WITH WIDESPREAD LIGHT SNOW DEVELOPING ACROSS CENTRAL MONTANA THIS AFTERNOON AND IN SOUTHWEST MONTANA OVERNIGHT.
CONDITIONS ARE QUIETING AS UPPER TROUGHING MOVES EAST OF THE FORECAST AREA.
358 PM CST MON DEC 28 2015 MID-AFTERNOON SFC ANALYSIS SHOWS LOW PRESSURE RESPONSIBLE FOR OUR DEPARTING COLD FRONT SITUATED OVER SERN MO MOVING NEWD IN CONCERT WITH ASSOCIATED LOW ALOFT PER WATER VAPOR IMAGERY. LOOKS LIKE 24 MORE HOURS OF QUIET WEATHER OVER THE REGION AS DRY AIR BEHIND THE DEPARTING LOW PRESSURE SYSTEM REMAINS IN PLACE. FORECAST MINS ARE EXPECTED TO RUN A BIT BELOW NORMAL AGAIN TONIGHT AS HIGH PRESSURE RIDGES EWD INTO THE AREA AND ALLOWS SFC WINDS TO DIE OFF.
A FAST MOVING AREA OF LOW PRESSURE WILL MOVE THROUGH THE AREA TONIGHT.
A SERIES OF WEAK TROUGHS WILL SLOWLY CROSS THE GREAT BASIN THROUGH MIDWEEK. HIGH PRESSURE WILL LIKELY RETURN FOR THE NEW YEAR. A LONGWAVE TROUGH ENCOMPASSES MUCH OF THE CONUS THIS MORNING. WEAK ASCENT ASSOCIATED WITH THE MID LEVEL TROUGH AXIS WILL BRING A WINDOW FOR LIGHT SNOW TONIGHT INTO TUESDAY MORNING.
155 PM MST MON DEC 28 2015 A FAST MOVING AREA OF LOW PRESSURE WILL MOVE THROUGH THE AREA TONIGHT.
MAINLY WAYNE, LAWRENCE, AND GILES COUNTIES WILL HAVE THE HIGHEST CHANCES TO SEE SEVERE WEATHER AND EVEN THEN. A STRONG LOW PRESSURE SYSTEM NW OF OUR AREA WILL PRODUCE GUSTY SOUTH WINDS.
325 PM CST MON DEC 28 2015 STACKED LOW PRESSURE SYSTEM OVER THE MID MS RIVER VALLEY CONTINUES TO EJECT AWAY FROM THE AREA AS FORECAST.
118 PM EST MON DEC 28 2015 ARCTIC HIGH PRESSURE BUILDS TODAY AND CRESTS OVER THE REGION TONIGHT.
1013 AM CST MON DEC 28 2015 THE COLD FRONT IS NOW MORE THAN HALF WAY THROUGH THE CWA. SCATTERED CLOUDS WILL REMAIN AS THEY CONTINUE TO WRAP AROUND THE UPPER LOW OVER CENTRAL ARKANSAS.
A BROAD UPPER TROUGH ACROSS THE WESTERN UNITED STATES WILL PREVAIL THROUGH MIDWEEK RESULTING IN COLD TEMPERATURES AND LIGHT SNOWFALL FOR OUR REGION. SINCE THE BULK OF THE ENERGY IN THE SPLIT FLOW TROUGH IS DOWN IN THE SOUTHWESTERN UNITED STATES. THE NORTHERN STREAM OF THE SPLIT TROUGH WILL SPREAD LIGHT SNOW INTO OUR AREA FROM THE NORTHWEST AS WELL.
1136 AM CST MON DEC 28 2015 MAIN CONCERN CONTINUES TO CENTER AROUND THE SOUTHERN PLAINS CLOSED LOW AND THE PATH THAT IT TAKES AS IT EJECTS TO THE NORTH/NORTHEAST. EARLY MRNG WATER VAPOR IMAGERY INDICATED THE LOW WAS CURRENTLY OVER NORTHEAST TX AND WAS MOVING NORTHEAST TOWARD SOUTHERN MO. BUT MUCH COOLER THAN WE HAVE EXPERIENCE SO FAR THIS WINTER WITH A RIDGE EXPECTED TO DEVELOP IN THE PAC NORTHWEST AND NORTHERLY FLOW OVER THE CNTRL US ALLOWING FOR COOLER AIR INTO THE REGION.
216 PM EST MON DEC 28 2015 A COLD FRONT TO OUR NORTH WILL MOVE SOUTHWARD INTO THE NORTHERN MIDLANDS THIS EVENING. ANOTHER COLD FRONT WILL MOVE INTO THE REGION FROM THE WEST ON TUESDAY.
446 PM EST MON DEC 28 2015 HIGH PRESSURE WILL MOVE EAST OF THE REGION OVERNIGHT. LOW PRESSURE WILL CROSS THE REGION LATER TUESDAY THROUGH TUESDAY NIGHT.
154 PM PST MON DEC 28 2015 COLD LOW PRESSURE WILL EXIT THE REGION TONIGHT WITH SNOW SHOWERS ENDING.
308 PM CST MON DEC 28 2015 THE COLD FRONT HAS ENTERED WEST ALABAMA WITH A WIDE BAND OF MODERATE TO HEAVY RAIN. WHICH IS 10-15 DEGREES COOLER THAN THE PAST SEVERAL DAYS BUT STILL ABOVE AVERAGE FOR LATE DECEMBER.
However a series of additional upper troughs will continue to swing through the area this week and reinforce the cold wx at the surface.
241 PM CST MON DEC 28 2015 LAST BIT OF SNOW CONTINUES TO DISSIPATE SOUTH AND EAST OF NORMAN THIS AFTERNOON, AS THE UPPER LOW QUICKLY MOVES INTO THE MIDWEST. LITTLE CHANGES WERE MADE TO THE FORECAST TONIGHT, BUT PATCHY FREEZING FOG WAS ADDED TO THE SW/W WHERE SOME BL MOISTURE POOLING WILL OCCUR THROUGH THE EARLY MORNING HOURS UNDER THE INFLUENCE OF (FINALLY) LIGHT WINDS.
333 PM CST MON DEC 28 2015 THE HIGHLY ADVERTISED SNOWFALL EVENT IS UNDERWAY. THIS FIRST ONE BEING DRIVEN BY THE WARM AIR ADVECTION/ISENTROPIC UPGLIDE AHEAD OF THE APPROACHING TROUGH. AND THE SECOND CAUSED AS A LOBE OF MID LEVEL ENERGY ROTATES AROUND THE WESTERN PERIPHERY OF THE MAIN UPPER LOW ON TUESDAY. THE HIGHEST AMOUNTS IN THAT RANGE ARE EXPECTED FROM NEAR RED WING TO EAU CLAIRE. AND THE LOWER END OF THAT RANGE LOOKS TO LIE FROM REDWOOD FALLS TO THE NORTHWEST TWIN CITIES METRO TO RICE LAKE WISCONSIN.
235 PM CST MON DEC 28 2015 A nearly vertically stacked low pressure system was continuing to move to the northeast across the Missouri Ozarks this afternoon. Additionally, a few pockets of freezing drizzle will be possible where we see a brief loss of cloud ice. The big concern if this occurs will be temperatures below freezing. thus resulting in a freezing fog threat.
140 PM MST MON DEC 28 2015 UPPER TROUGH EXTENDING FROM WYOMING SOUTHEAST TO THE TIGHT UPPER LOW OVER MISSOURI WILL CONTINUE TO LIFT NORTHEAST OUT OF THE AREA WITH SHORT WAVE RIDGING DEVELOPING OVER THE TRI-STATE AREA OVERNIGHT. TEMPERATURES WILL CONTINUE BELOW NORMAL IN THE SHORT TERM AS THE STRONG LOW PRESSURE AREA OVER MISSOURI WRAPS A CHUNK OF COLD CANADIAN AIR AROUND THE BACK SIDE OF THE SYSTEM AND INTO THE CENTRAL HIGH PLAINS.
313 PM CST MON DEC 28 2015 UPPER LEVEL TROUGH EXTENDING FROM THE NORTHERN ROCKIES TO SRN CALIFORNIA WILL CONTINUE DIGGING INTO ARIZONA THEN SWING INTO A NEGATIVELY TILTED REGIME AS IT APPROACHES WEST TEXAS TUESDAY AFTERNOON. WITH THE DIFFLUENCE TO THE EAST OF THE TROUGH AXIS. WE SEE FOG/FREEZING FOG SET UP. THIS SHOULD HELP LIMIT THE LOW TEMPS FROM BOTTOMING OUT TONIGHT.
Focus turns to winter precip on the NW sector of the low. That said, with colder air pushing into the area tonight, freezing of any residual water on roads may become an issue. Still, bridges and overpasses may present a problem if untreated. While the wind advisory is expected to be allowed to expire at 21z, strong winds with gusts to 30 mph will still be possible this evening as the low pulls out of the area.
MAINLY WAYNE, LAWRENCE, AND GILES COUNTIES WILL HAVE THE HIGHEST CHANCES TO SEE SEVERE WEATHER AND EVEN THEN. A STRONG LOW PRESSURE SYSTEM AND COLD FRONT WILL SWEEP THROUGH MIDDLE TN TODAY.
1230 PM CST MON DEC 28 2015 HIGHLY ANOMALOUS UPPER LOW LOCATED S OF KFWD PROGRESSING NEWD AS EXPECTED WITH CONVECTION REDEVELOPING IN THE WCB AHEAD OF THE LOW. MOISTURE ADVECTION IN THE WCB IS IMPRESSIVE AND IN SOME CASES UNPRECEDENTED IN THE SERN STATES AND PORTIONS OF THE LOWER MS VALLEY. DOWNSTREAM RIDGE HAS DEVELOPED FROM THE NRN PLAINS INTO THE MIDWEST SHORTENING THE TROUGH TO RIDGE WAVELENGTH AND WITH THE IMPRESSIVE DYNAMICS ONGOING ACROSS TX AND THE PREVIOUSLY MENTIONED WCB CHARACTERISTICS. ON THE WRN/NRN SIDE OF THE LOW. DIFFICULT FCST TODAY WITH RESPECT TO THE AMOUNT OF MOISTURE THAT WORKS AROUND THE NRN AND WRN SIDE OF THE AFOREMENTIONED UPPER LOW AS IT MOVES NEWD INTO THE MIDWEST. A PIECE OF THE MAIN LOW PRESSURE SYSTEM ACROSS THE GREAT LAKES WILL DRIFT ACROSS THE NRN PLAINS EARLY TUESDAY.
MPJ UPDATED 1231Z SOUTHWEST FLOW ALOFT WITH LOW PRESSURE AT THE SURFACE WITH ENOUGH MOISTURE TO PRODUCE WIDESPREAD SNOW AND FOG AT AERODROMES DURING PERIOD.
1002 AM CST MON DEC 28 2015 MORNING UPDATE REGARDING THE APPROACHING RAIN/THUNDERSTORMS THE APPROACHING COLD FRONT AS OF 16Z IS SOMEWHERE IN WESTERN MISSISSIPPI WITH THE LINE OF THUNDERSTORMS ALONG IT WEAKENING SIGNIFICANTLY AS OF 16Z WITH VERY LITTLE LIGHTNING AND NO SEVERE REPORTS COMING FROM THE LINE. WITH THE HIGH AMOUNT OF SHEAR ACROSS THE AREA. IF ANY STORMS CAN TAP INTO THE HIGHER INSTABILITY AIR. GIVEN THE HIGH AMOUNT OF MOISTURE.
1019 AM MST MON DEC 28 2015 THE NEXT PACIFIC TROUGH WILL MOVE INTO THE GREAT BASIN TODAY.
A strong ridge of high pressure will dominate the region by late week and into the weekend promoting strong valley inversions, fog and low clouds, but clearing skies in the mountains. The upper trough is right over the Inland Northwest this morning. As the trough axis drifts slowly east tonight, snow showers will end across the Spokane- Coeur d'Alene area with the focus on the southeast zones. /Kelch 18Z TAFS: Unstable conditions under a trough of low pressure will continue to spread light snow across extreme eastern WA and north Idaho today.
330 PM CST MON DEC 28 2015 Deep upper low and surface circulation just southwest of Illinois this afternoon. This, in concert with the freezing precipitation north of a line from roughly Havana to Bloomington has caused significant tree damage and power lines down for Central Illinois. Although the storm associated precipitation is slowly dwindling, an area of precip closer to the low center, with a few rumbles of thunder will move through in the early evening hours. That being said, temps still dropping to freezing or just below should freeze any freestanding water at the surface and make for intermittently slick travel. Dry conditions expected with highs in the low and mid 30s from around I-72 north and upper 30s/low 40s to the south.
223 PM MST MON DEC 28 2015 A SLOW-MOVING MID TO UPPER-LEVEL TROUGH OF LOW PRESSURE EXTENDING SOUTHWARD FROM EASTERN WASHINGTON TO WESTERN NEVADA IS CONTINUING TO APPROACH OUR CWA. LATEST RADAR IMAGERY AND SURFACE OBS INDICATE LIFT AND MOISTURE AHEAD OF THIS TROUGH HAVE GENERATED LIGHT SNOW IN THE HELENA AREA AND ACROSS MUCH OF NORTH- CENTRAL MONTANA. EXPECT THIS LIGHT SNOW TO GRADUALLY EXPAND IN COVERAGE THIS EVENING AND COVER THE ENTIRE REGION LATE TONIGHT INTO TUESDAY AS THE TROUGH NEARS WESTERN IDAHO BY EARLY TUESDAY EVENING.
108 PM MST MON DEC 28 2015 UPPER TROUGH EXTENDING FROM WYOMING SOUTHEAST TO THE TIGHT UPPER LOW OVER MISSOURI WILL CONTINUE TO LIFT NORTHEAST OUT OF THE AREA WITH SHORT WAVE RIDGING DEVELOPING OVER THE TRI-STATE AREA OVERNIGHT. TEMPERATURES WILL CONTINUE BELOW NORMAL IN THE SHORT TERM AS THE STRONG LOW PRESSURE AREA OVER MISSOURI WRAPS A CHUNK OF COLD CANADIAN AIR AROUND THE BACK SIDE OF THE SYSTEM AND INTO THE CENTRAL HIGH PLAINS.
302 PM CST MON DEC 28 2015 STORM SYSTEM MOVING THROUGH THE LOWER MISSOURI VALLEY THIS AFTERNOON DIDN'T HAVE AS MUCH IMPACT ON THE AREA AS EXPECTED WITH YESTERDAY'S MODEL RUN. NEBRASKA COUNTIES NOW COVERED BY WINTER WEATHER ADVISORY WITH LIGHT SNOW AND PERIODS OF LIGHT FREEZING DRIZZLE POSSIBLE AT TIMES FOR THE REMAINDER OF THE AFTERNOON.
336 PM CST MON DEC 28 2015 THE UPPER LEVEL LOW THAT BROUGHT THE WILDLY VARIED WEATHER ACROSS THE REGION OVER THE PAST 2-3 DAYS IS NOW RAPIDLY MOVING THROUGH THE MIDWEST. TEMPERATURES WILL RANGE FROM THE LOWER 20S IN THE NORTHWEST TO LOWER 30S SOUTHEAST. IT IS POSSIBLE SOME PATCHY FOG AND/OR FREEZING FOG MAY DEVELOP. IF FREEZING FOG DEVELOPS. ANOTHER UPPER LEVEL TROUGH CURRENTLY OVER CALIFORNIA AND NEVADA WILL DIG INTO NORTHERN MEXICO ON TUESDAY AND THEN ACROSS THE STATE TUESDAY NIGHT. BROAD TROUGHING WILL PERSIST JUST NORTH OF THE REGION THROUGH THE END OF THE WEEK WITH WEST OR SOUTHWEST FLOW ALOFT OVER NORTH AND CENTRAL TEXAS.
241 PM EST MON DEC 28 2015 WHILE STRONG LOW PRESSURE WILL MOVE NORTH THRU THE CENTER OF THE NATION. HIGH PRESSURE TEMPORARILY MOVES IN ITS WAKE.
MVFR TO VFR CIGS ACROSS THE AREA THIS MORNING AHEAD OF A COLD FRONT. THIS RISK IS ON THE LOW SIDE AS STRONGER INSTABILITY IS ABSENT.
DRY CONDITIONS WITH WARMER TEMPERATURES WILL PREVAIL TODAY.
1101 AM CST MON DEC 28 2015 SFC OBS SHOW THE COLD FRONT NOW WELL EAST OF THE AREA. COLD FRONTAL BOUNDARY HAS MOVED INTO EASTERN LOUISIANA AND WESTERN MISSISSIPPI THIS MORNING.
1136 AM EST MON DEC 28 2015 ARCTIC HIGH PRESSURE BUILDS TODAY AND CRESTS OVER THE REGION TONIGHT.
SNOW WILL BE HEAVY AT TIMES ON TUESDAY MORNING BEFORE CHANGING TO A MIX OF SLEET AND FREEZING RAIN BY MIDDAY. TOTAL SNOW ACCUMULATIONS OF 3 TO 7 INCHES CAN BE ANTICIPATED WITH THE HIGHEST AMOUNTS IN THE MOUNTAINS.
LOW PRESSURE WILL MOVE NORTHEAST OUT OF NEVADA AND GRAZE FAR NORTHERN UTAH EARLY TODAY. HIGH PRESSURE ALOFT WILL RETURN TO THE REGION BEGINNING SUNDAY.
111 AM EDT SAT AUG 8 2015 AN UPPER TROUGH AND ASSOCIATED FRONTAL BOUNDARY WILL MOVE EAST OF THE FORECAST AREA TONIGHT.
625 AM EDT SAT AUG 8 2015 HIGH PRESSURE WILL DOMINATE OUR WEATHER THROUGH THE WEEKEND BRINGING MAINLY DRY CONDITIONS AND COMFORTABLE TEMPERATURES.
SYNOPTIC SETUP FOR THE SHORT TERM /AND INTO LONG RANGE FOR THAT MATTER/ CONSISTS OF STRONG H5 RIDGE CENTERED OVER SRN PLAINS. WITH A LEAST MODEST TROUGHS OVER BOTH COASTS. SOUTH FLORIDA REMAINS DOMINATED BY SUBTROPICAL RIDGE.
211 AM EDT SAT AUG 8 2015 HIGH PRESSURE WILL CONTROL REGIONAL WEATHER CONDITIONS THROUGH SUNDAY WITH CLEAR TO PARTLY CLOUDY SKIES AND SEASONABLY MILD TEMPERATURES.
130 AM EDT SAT AUG 8 2015 HIGH PRESSURE WILL DOMINATE OUR WEATHER THROUGH THE WEEKEND BRINGING DRY CONDITIONS AND COMFORTABLE TEMPERATURES.
320 AM EDT SAT AUG 8 2015 WEAK HIGH PRESSURE WILL RIDGE INTO THE FORECAST AREA TODAY WITH WEAK TROUGHING DEVELOPING SUNDAY. THE GFS AND ECMWF INDICATE UPPER RIDGING WILL SHIFT FARTHER WEST WITH UPPER TROUGHING DEEPENING OVER THE EASTERN CONUS.
142 AM EDT SAT AUG 8 2015 HIGH PRESSURE BUILDS IN SLOWLY FROM THE NORTH TONIGHT THROUGH SATURDAY NIGHT. WAVES OF LOW PRESSURE TRACK TO THE SOUTH AND EAST.
LOOK FOR LIGHT WINDS OVERNIGHT AND TOMORROW AS WEAK HIGH PRESSURE COVERS THE MID STATE.
341 AM EDT SAT AUG 8 2015 HIGH PRESSURE BUILDS INTO THE NORTHEAST FROM THE NORTH THROUGH THE WEEKEND AS SEVERAL WAVES OF LOW PRESSURE PASS TO THE SOUTH.
LARGE HIGH PRESSURE RIDGE CENTERED OVER TEXAS WILL DRIFT EASTWARD THROUGH SUNDAY. THE GFS IS A BIT OVER DONE WITH THE WARMING TEMPERATURES /850MB TEMPS 2-3 DEGREES WARMER THAN MODEL CONSENSUS/. JUST SOME ISOLD ACTIVITY POSSIBLE ACROSS THE FAR SE AND THE HIGHER ELEVATIONS OF THE NE.
MOIST BAND AND SHOWERS HAVE FORMED ON THE NW FLANK OF THE UPPER LOW NOW PASSING ACROSS SRN ID.
BUT THERE IS NO REAL RELIEF AT THIS TIME AS THE RIDGE ALOFT WILL REMAINED ANCHORED OVER THE REGION.
Although more favorable upper level dynamics will remain off to our north in the form of a +70kt jet streaming eastward across Nebraska, enough may exist across northern portions of Kansas to support a southward component to possible thunderstorm development, particularly in the vicinity of a warm front that is projected to lift slowly north across western Kansas today, reaching near the Nebraska border by late this afternoon. The focus for any precip chances is expected to shift south and west closer to the Oklahoma and Colorado borders respectively as the cold front pushes further south into the Oklahoma panhandle before stalling out, creating an east to southeasterly upslope flow across western Kansas. Seasonal temperatures can be expected across western Kansas Sunday as a weak cold front pushes slowly southward across the region.
209 AM EDT SAT AUG 8 2015 HIGH PRESSURE WILL DOMINATE OUR WEATHER THROUGH THE WEEKEND BRINGING MAINLY DRY CONDITIONS AND COMFORTABLE TEMPERATURES.
109 AM EDT SAT AUG 8 2015 HIGH PRESSURE WILL CONTROL REGIONAL WEATHER CONDITIONS THROUGH SUNDAY WITH CLEAR TO PARTLY CLOUDY SKIES AND SEASONABLY MILD TEMPERATURES.
253 AM EDT SAT AUG 8 2015 HIGH PRESSURE OVER CENTRAL QUEBEC CANADA WILL RIDGE SOUTH INTO THE AREA. AND DRY WEATHER WITH SLIGHTLY COOLER THAN NORMAL TEMPS IN THE 70S TO LOWER 80S. WEAK LOW PRESSURE WILL MOVE OUT OF THE CENTRAL UNITED STATES SUNDAY NIGHT.
653 AM EDT SAT AUG 8 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY PROVIDING DRY CONDITIONS AND SEASONABLE TEMPERATURES. CHANCES FOR PRECIPITATION WILL BEGIN TO INCREASE AGAIN ON SUNDAY AS A WARM FRONT APPROACHES THE OHIO VALLEY.
LOW PRESSURE OFF THE CAROLINA COAST WILL MOVE NORTHEAST AND AWAY FROM THE AREA TODAY. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON SUNDAY. AND THE INFLUENCE OF THE SHORT WAVE THAT'S NOW MOVING ACROSS VA AND PROGGED TO MOVE ESE AS IT MERGES WITH THE L/W TROUGH AXIS OFF THE EAST COAST. SO ASIDE FROM THE LOW CLOUDS THIS MORNING. FAIR WEATHER WILL CONTINUE OVER OUR AREA WITH HIGH PRESSURE IN PLACE. THE UPPER RIDGE OVER THE SOUTHERN US WILL SLOWLY SHIFT WEST TOWARD THE SOUTHERN ROCKIES THIS WEEK AS THE LARGE SCALE FLOW UNDERGOES SIGNIFICANT AMPLIFICATION AND A DEEP TROUGH EVENTUALLY DEVELOPS OVER THE EASTERN US.
405 AM EDT SAT AUG 8 2015 HIGH PRESSURE WILL DOMINATE OUR WEATHER THROUGH THE WEEKEND BRINGING MAINLY DRY CONDITIONS AND COMFORTABLE TEMPERATURES.
616 AM EDT SAT AUG 8 2015 HIGH PRESSURE OVER CENTRAL QUEBEC CANADA WILL RIDGE SOUTH INTO THE AREA. AND DRY WEATHER WITH SLIGHTLY COOLER THAN NORMAL TEMPS IN THE 70S TO LOWER 80S. WEAK LOW PRESSURE WILL MOVE OUT OF THE CENTRAL UNITED STATES SUNDAY NIGHT.
255 AM PDT SAT AUG 8 2015 SHOWER AND THUNDERSTORM CHANCES DECREASE TODAY AS LOW PRESSURE EXITS INTO UTAH.
WEAK UPPER RIDGING BUILDING INTO THE AREA BY MID-DAY SHOULD WARM THE MID-LEVELS HOWEVER. THIS WAVE IS EXPECTED TO RIDE FLOW AROUND A MID-LEVEL RIDGE CENTERED OVER EASTERN TEXAS.
143 AM EDT SAT AUG 8 2015 WEAK HIGH PRESSURE BUILDS FROM THE NORTH TONIGHT.
602 AM EDT SAT AUG 8 2015 HIGH PRESSURE OVER CENTRAL QUEBEC CANADA WILL RIDGE SOUTH INTO THE AREA. AND DRY WEATHER WITH SLIGHTLY COOLER THAN NORMAL TEMPS IN THE 70S TO LOWER 80S. WEAK LOW PRESSURE WILL MOVE OUT OF THE CENTRAL UNITED STATES SUNDAY NIGHT.
607 AM EDT SAT AUG 8 2015 HIGH PRESSURE BUILDS INTO THE NORTHEAST FROM THE NORTH THROUGH THE WEEKEND AS SEVERAL WAVES OF LOW PRESSURE PASS TO THE SOUTH.
LOW PRESSURE OFF THE CAROLINA COAST WILL MOVE NORTHEAST AND AWAY FROM THE AREA TODAY. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON SUNDAY. AND THE INFLUENCE OF THE WEAK SHORT WAVE THAT'S NOW MOVING ACROSS WV/VA AND PROGGED TO MOVE ESE AS IT MERGES WITH THE L/W TROUGH AXIS OFF THE EAST COAST. SO ASIDE FROM THE LOW CLOUDS THIS MORNING. FAIR WEATHER WILL CONTINUE OVER OUR AREA WITH HIGH PRESSURE IN PLACE. THE UPPER RIDGE OVER THE SOUTHERN US WILL SLOWLY SHIFT WEST TOWARD THE SOUTHERN ROCKIES THIS WEEK AS THE LARGE SCALE FLOW UNDERGOES SIGNIFICANT AMPLIFICATION AND A DEEP TROUGH EVENTUALLY DEVELOPS OVER THE EASTERN US.
430 AM EDT SAT AUG 8 2015 AN UPPER TROUGH WILL REMAIN MOSTLY OVER NORTHERN MAINE TODAY INTO THIS EVENING.
TROF WILL SLOWLY EXIT TO OUR EAST SUNDAY AS HEIGHTS BEGIN TO RISE OVER OUR WEST. WE ARE VERY CONFIDENT IN THIS SCENARIO GIVEN VERY GOOD MODEL AGREEMENT IN AN AMPLIFIED 500-MB RIDGE ACROSS THE AREA DOWN- STREAM OF A CLOSED LOW OFF THE WEST COAST. AND HIGH-BASED CONVECTION IF SUBTLE IMPULSES MANAGE TO CROSS THE AREA UNDERNEATH THE RIDGE AS SOME MODEL SIMULATIONS HAVE SUGGESTED. THE 00 UTC GFS AND ECMWF FELL INTO A BIT BETTER AGREEMENT ON THE BREAKDOWN OF THE RIDGE ALOFT.
342 AM EDT SAT AUG 8 2015 HIGH PRESSURE OVER CENTRAL QUEBEC CANADA WILL RIDGE SOUTH INTO THE AREA. AND DRY WEATHER WITH SLIGHTLY COOLER THAN NORMAL TEMPS IN THE 70S TO LOWER 80S. WEAK LOW PRESSURE WILL MOVE OUT OF THE CENTRAL UNITED STATES SUNDAY NIGHT.
AN UPPER LEVEL TROUGH OF LOW PRESSURE CURRENTLY OVER SOUTHERN IDAHO WILL CROSSING THE REGION LATER TONIGHT AND THROUGH THE DAY ON SUNDAY.
TEMPERATURES HAVE MANAGED TO FALL INTO THE LOWER 80S AT MOST LOCATIONS WITH THE KEY DEER REFUGE RAWS NEAR THE INTERIOR OF BIG PINE KEY MEASURING 75F. SURFACE WINDS WILL BE DRIVEN BY THE MAINLAND SEABREEZE AND THERMALLY-INDUCED TROUGHING. AND SOUTHEAST MORNING WINDS BECOMING NORTHWEST OR NORTH BY LATE AFTERNOON ACROSS THE LOWER KEYS. UPPER RIDGING WILL BUILD WELL TO THE NORTHWEST WITH THE NEXT DEEPENING EAST COAST TROUGH EVOLVING THROUGHOUT THE WEEK. THUS AN UPPER COL REGION WILL BE IN THE KEYS VICINITY WITH VERY WEAK SURFACE RIDGING NEAR THE KEYS OR SOUTH FLORIDA.
A RIDGE WL REMAIN MID-CONTINENT WITH TROFS PERSISTING NR BOTH COASTS. IT LOOKS LIKE THE BEST CHC FOR PCPN WL OCCUR ACRS THE N SUN AFTN AS COLD FRONT APPROACHES THAT AREA FM THE NW.
340 AM EDT SAT AUG 8 2015 AN UPPER TROUGH WILL REMAIN MOSTLY OVER NORTHERN MAINE TODAY INTO THIS EVENING.
HIGH PRESSURE AT THE SURFACE CONTINUES TODAY AND ALOFT IT IS STRENGTHENING OVER THE SOUTH CENTRAL STATES AND SOUTHERN MS VALLEY WITH BUILDING HEIGHTS OVER THE EASTERN TN VALLEY. THIS MEANS WARMER TEMPERATURES TODAY AND MORE SUNSHINE AFTER SOME MORNING FOG. TONIGHT RIDGE IS STILL STRONG.
LOW LEVEL THETAE TROUGH CURRENTLY RESIDING ACROSS THE AREA IS PROVIDING A FAIRLY SHARP WEST-EAST INSTABILITY GRADIENT FROM THE MID MS VALLEY TO THE OHIO VALLEY. BUT LAGGING LOW LEVEL THETAE RIDGE MAY BEGIN TO HAVE SOME INFLUENCE OVERNIGHT INTO EARLY SATURDAY MORNING. SOME EASTWARD PROGRESSION OF DAMPENED LOW LEVEL THERMAL RIDGING ON SATURDAY SHOULD SOMEWHAT OFFSET EXPECTED MORE CLOUD COVER ON SATURDAY FOR HIGHS ONCE AGAIN AROUND 80. OR POSSIBLY INTO THE LOWER 80S DEPENDING ON EXTENT OF CLOUD COVER. AN UPPER LEVEL SYSTEM OVER THE WESTERN CONUS WILL EJECT AN UPPER LEVEL TROF OVER THE LARGE UPPER LEVEL SOUTHERN PLAINS RIDGE AND THEN THE TROF WILL MOVE INTO THE UPPER GREAT LAKES REGION BY EARLY SUNDAY.
524 AM EDT SAT AUG 8 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY PROVIDING DRY CONDITIONS AND SEASONABLE TEMPERATURES. CHANCES FOR PRECIPITATION WILL BEGIN TO INCREASE AGAIN ON SUNDAY AS A WARM FRONT APPROACHES THE OHIO VALLEY.
STILL EXPECT HIGHS TO REACH THE LOW TO MID 80S THIS AFTERNOON. MCS ACTIVITY ON THE NORTH SIDE OF THE RIDGE SHOULD STAY NORTH OF OUR REGION UNTIL POSSIBLY LATE SUNDAY. THE UPPER LEVEL RIDGING WILL DRAW IN SLIGHTLY WARMER AIR INTO THE OHIO VALLEY.
316 AM EDT SAT AUG 8 2015 HIGH PRESSURE WILL LINGER OVER THE UPPER OHIO VALLEY INTO SUNDAY. A WARM FRONT WILL DEVELOP ACROSS THE REGION TOMORROW AFTERNOON AS LOW PRESSURE MOVES EAST OUT OF THE CENTRAL PLAINS.
THE MID LEVEL TROUGH JUST EAST OF THE REGION WILL CONTINUE TO PULL AWAY AND 500 MB HEIGHTS WILL STEADILY CLIMB THROUGH THE DAY AS STRONG MID LEVEL RIDGING OVER THE SOUTHERN PLAINS BEGINS TO BUILD EASTWARD INTO THE REGION. AN ISOLATED STRONG STORM CANNOT BE RULED OUT ACROSS THIS AREA GIVEN THE PRESENCE OF THE LOW LEVEL CONVERGENCE COUPLED WITH MUCH HIGHER DEEP LAYER MOISTURE LEVELS THAN THE REST OF THE AREA.
340 AM EDT SAT AUG 8 2015 HIGH PRESSURE WILL LINGER OVER THE UPPER OHIO VALLEY INTO SUNDAY. A WARM FRONT WILL DEVELOP ACROSS THE REGION TOMORROW AFTERNOON AS LOW PRESSURE MOVES EAST OUT OF THE CENTRAL PLAINS.