Aikyam-Lab/Synoptic-Bench huggingface dataset:
THE HIGH ELONGATES AND BECOMES POSITIONED FROM THE WEST ATLANTIC INTO THE SOUTHEAST IN THE NEAR TERM. AS THE HIGH SHIFTS EAST. RANGING FROM 43 TO 48 INTERIOR TO THE LOWER HALF OF THE 50S CLOSER TO THE COAST.
614 AM CST SUN FEB 28 2016 H5 ANALYSIS FROM EARLIER THIS EVENING HAD A RIDGE ACROSS THE WEST COAST OF THE CONUS WHICH EXTENDED INTO THE YUKON. AN ELONGATED ARE OF LOW PRESSURE EXTENDED FROM THE NW TERRITORIES OF CANADA EAST INTO NRN QUEBEC. SOUTH OF THE LOW. IN BETWEEN THE WEST COAST RIDGE AND THE ZONAL FLOW IN THE EASTERN CONUS. THIS DISTURBANCE ACROSS THE HIGH PLAINS. HAS SPREAD LIGHT RAIN TO SOUTH DAKOTA AND NORTHERN NEBRASKA OVERNIGHT AND HAS PUSHED A PACIFIC COLD FRONT THROUGH WESTERN AND NORTH CENTRAL NEBRASKA OVERNIGHT. RESULTING IN HIGHS IN THE LOWER 50S IN THE NORTHEASTERN CWA. AN ARCTIC COLD FRONT WILL BEGIN TO PUSH SOUTH FROM SRN CANADA INTO NORTH DAKOTA AND NRN MINNESOTA OVERNIGHT.
601 AM EST SUN FEB 28 2016 CLOUDS AND RAIN CHANCES WILL INCREASE LATE TODAY INTO THIS EVENING AS A WEAK COLD FRONT SWEEPS THROUGH THE REGION.
A cold front will move through KABI early afternoon, and through KSJT and KBBD late afternoon. /issued 325 AM CST SUN FEB 28 2016/ (Today and Tonight) A weak cold front will move into the Big Country midday, reaching the I-20 corridor 1 to 2 PM CST in the afternoon, and a San Angelo to Brownwood line around 5 PM CST.
A WEAK COLD FRONT WILL MOVE INTO THE AREA TONIGHT BEFORE STALLING AND BECOMING DIFFUSE ACROSS NE TX/SRN AR.
WATER VAPOR AND 5H ANALYSIS SHOWS AN UPPER RIDGE SHIFTING INTO THE OH/LOWER MS VALLEYS THIS MORNING. AS THE RIDGE SLIDES EAST TODAY THE WAVE WILL TRACK RAPIDLY EAST THROUGH THE GREAT LAKES AND ERN CORN BELT DRAGGING A WEAKENING COLD FRONT RAPIDLY THRU THE TN VALLEY LATE TONIGHT.
CLOUDLESS SKY AND HIGH PRESSURE IN PLACE. CHATTANOOGA AIRPORT, TN 68 46 66 49 / 0 20 20 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 65 44 63 46 / 0 20 20 10 OAK RIDGE, TN 65 45 63 47 / 0 20 20 10 TRI CITIES AIRPORT, TN 64 41 60 40 / 0 30 30 10.
343 AM MST SUN FEB 28 2016 UPPER LEVEL TROF CONTINUES TO SWEEP ACROSS NORTHEAST COLORADO AND INTO THE CENTRAL PLAINS EARLY THIS MORNING. TEMPERATURES WILL BE COOLER TODAY BEHIND LAST NIGHTS FRONT AND READINGS WILL BE BACK INTO THE 50S TO AROUND 60. THE NEXT UPPER TROF WILL SPREAD MOISTURE BACK INTO THE MOUNTAINS LATER TONIGHT WITH A FEW SNOW SHOWERS DEVELOPING BEFORE DAWN. THESE DISTURBANCES WILL MAINLY AFFECT THE HIGH COUNTRY WITH PRECIPITATION AS WELL AS BRING PERIODS OF WINDY CONDITIONS. THERE WILL BE A SLIGHT CHANCE OF SHOWERS OVER THE PLAINS AS THE COLD FRONT APPROACHES IN THE AFTERNOON. TEMPERATURES WILL BE SIMILAR TO TODAYS READINGS BEFORE THE COLD FRONT ARRIVES IN THE LATE AFTERNOON TO EARLY EVENING.
MOISTURE WILL BE LACKING AS A COLD FRONT MOVES THROUGH THE STATE TODAY. TODAY THROUGH MONDAY NIGHT CLEAR SKIES AND SOUTHERLY WINDS WERE IN PLACE ACROSS ARKANSAS DURING THE OVERNIGHT HOURS WITH TEMPERATURES NOTICEABLY WARMER WHEN COMPARED TO 24 HOURS AGO. LOW PRESSURE WILL DRAG A COLD FRONT THROUGH THE STATE TODAY RESULTING IN AN INCREASE IN CLOUDS.
A WINDY AND WARM DAY IS EXPECTED ACROSS CENTRAL INDIANA AS A LOW PRESSURE SYSTEM APPROACHES THE GREAT LAKES.
A WEAK RIDGE WILL CONTINUE BUILDING OVER THE REGION THIS MORNING FOR RELATIVELY CALM AND CLEAR CONDITIONS. MID-LEVEL MOISTURE WILL MOVE THROUGH THE RIDGE AFTER ABOUT 5 AM MST.
AT WHICH TIME THEY WILL BEGIN TO VEER TO THE NORTH TO NORTHEAST AS A COLD FRONT MOVES INTO THE REGION. /ISSUED 349 AM CST SUN FEB 28 2016/ THE EXPECTED COLD FRONT IS ON TIME THIS MORNING AS IT IS CURRENTLY PUSHING INTO THE NORTHERN TEXAS PANHANDLE AND SHOULD MOVE INTO OUR NORTHERN ROW OF COUNTIES BY 12Z. MOST AREAS SHOULD SEE OVERNIGHT LOWS NEAR OR ABOVE THE FREEZING MARK. ALDRICH A GOOD CHUNK OF THE FIRST PART OF THE EXTENDED WILL BE CHARACTERIZED BY RIDGING OUT WEST AND A PERSISTENT LOW UP NEAR HUDSON BAY.
611 AM CST SUN FEB 28 2016 POTENT SHORT WAVE MOVING THROUGH THE ROCKIES EARLY THIS MORNING WILL CONTINUE TO DRIVE A COLD FRONT INTO THE REGION.
EVEN THOUGH COLD FRONT WILL MOVE THROUGH TODAY. RIDGE AXIS MOVES ACROSS THE FORECAST AREA TONIGHT. COOLED TEMPERATURES A BIT TUE NIGHT AS RIDGE AXIS MOVES ACROSS WITH LIGHT WINDS. DOES APPEAR RIDGE AXIS WILL MOVE ACROSS ON THU NIGHT WITH RETURN FLOW BY FRI AND INTO SAT. -HOWERTON A SE-MOVG COLD FRONT THAT HAD ENTERED CNTRL KS 10-11Z WL SURGE ACRS SC KS ~15Z & SE KS ~18Z.
High pressure is centered over the region this morning and will move east of the region this afternoon. As this occurs, the low level flow will veer around to more of a southeasterly direction, gradually increasing low level moisture to the region. With sunny skies expected today, temperatures should warm into the low to mid 70s across the region.
TODAY THROUGH MONDAY NIGHT CLEAR SKIES AND SOUTHERLY WINDS WERE IN PLACE ACROSS ARKANSAS DURING THE OVERNIGHT HOURS WITH TEMPERATURES NOTICEABLY WARMER WHEN COMPARED TO 24 HOURS AGO. LOW PRESSURE WILL DRAG A COLD FRONT THROUGH THE STATE TODAY RESULTING IN AN INCREASE IN CLOUDS.
HIGH PRESSURE ALOFT ACROSS UTAH TODAY WILL GIVE WAY TO THE NEXT WEAK STORM SYSTEM ON MONDAY.
536 AM CST SUN FEB 28 2016 Spring-like temperatures to continue across the Lwr Missouri Vly today out ahead of a cold front that will swing through the area later this afternoon. with the only exception being across the far north and northwest where cooler air will begin to move south by early afternoon. High pressure to quickly build into the region tonight which will provide for a dry start to the upcoming workweek. Despite the passage of the cold front late Sunday afternoon. southerly flow will quickly return to the area on Monday as another area of low pressure begins to develop across the central High Plains thanks to incoming energy from the Northern Rockies.
ANOTHER QUIET NIGHT ACROSS THE MID STATE WITH THE UPPER RIDGE OVER THE REGION. WINDS SHOULD PICK UP A BIT TODAY WITH A TIGHTENING SURFACE PRESSURE GRADIENT AHEAD OF AN APPROACHING TROUGH. THE STRONG WINDS SHOULD ALSO HELP MIX OUT THE LOW LEVELS A BIT. WHICH WILL INCREASE TEMPS SLIGHTLY AND ALSO MAY DRY OUT THE LOWER ATMOSPHERE A BIT MORE. MIN RH VALUES ARE AROUND 30 PERCENT AT THE LOW END.
SURFACE OBSERVATIONS PLACE HIGH PRESSURE OVER THE FLORIDA-GEORGIA BORDER. TEMPERATURES ARE IN THE LOWER 60S WITH NORTHEAST BREEZES GUSTING BETWEEN 20 AND 25 MPH.
920 AM EST SUN FEB 28 2016 HIGH PRESSURE WILL SHIFT OFFSHORE TODAY. /ISSUED / LATEST REGIONAL SURFACE ANALYSIS SHOWS HIGH PRESSURE HAS SETTLED OVER SOUTH GEORGIA AND NORTH FLORIDA TONIGHT WITH EXCELLENT RADIATIONAL COOLING CONDITIONS OVER THE SOUTHERN TWO THIRDS OF THE STATE. ANOTHER TREMENDOUS DAY IN STORE AS HIGH PRESSURE SLIDES FURTHER TO THE SOUTH AND A BROADER SOUTHWEST FLOW REGIME RESULTS IN ADDITIONAL MODERATION OF THE AIRMASS. MOISTURE WILL BE A LIMITING FACTOR BUT SINCE WHAT IS THERE WILL BE AT THE LOW LEVELS. WILL SHADE ON THE HIGH SIDE OF GUIDANCE FOR POPS.
S/W TROUGH MOVING INTO NEBRASKA WITH A SECOND S/W DROPPING DOWN THE BACKSIDE IN WYOMING WILL ROTATE AROUND AND HELP PUSH A WEAK COLD FRONT INTO NETX TONIGHT STALLING BUT THIS MAY HELP PRODUCE MORE LIFTING ACROSS SETX LEADING TO EXTENSIVE CLOUD COVER BENEATH THE STRENGTHENING CAP.
418 AM CST SUN FEB 28 2016 A WEAK UPPER TROF OVERHEAD SUPPORTS A FEW LIGHT SHOWERS. THIS COLD ADVECTION WILL ALSO SQUEEZE OUT AVAILABLE MOISTURE IN THE LOW LEVELS.
715 AM EST SUN FEB 28 2016 HIGH PRESSURE WILL SHIFT OFFSHORE THROUGH MONDAY.
AN APPROACHING LOW PRESSURE TROUGH AND COLD FRONT WILL BRING INCREASING CLOUDS LATE IN THE TAF PERIOD.
SOME LIGHT FREEZING RAIN MAY MIX IN ACROSS NORTHERN NORTH DAKOTA THIS MORNING AS FORECAST SOUNDINGS INDICATE A DRYING OF THE MID-LEVELS WHILE A SATURATED BOUNDARY LAYER REMAINS. THERE MAY BE A FEW BRIEF PERIODS OF LIGHT FREEZING RAIN BEFORE OR AFTER MID LEVEL SATURATION OCCURS. A BRIEF PERIOD OF VERY LIGHT FREEZING RAIN WILL BE REMAIN POSSIBLE IN THE MORNING OVER THE SOUTHWEST.
942 AM EST SUN FEB 28 2016 HIGH PRESSURE WILL REIGN OVER THE SOUTHEASTERN STATES THROUGH MONDAY.
940 AM EST SUN FEB 28 2016 DEEP HI PRES RIDGE CENTERED OVER N FL THIS AM. A DEPARTING H30-H20 JET STREAK OVERHEAD WILL DRAG THE RIDGE INTO THE W ATLC THRU THE DAY. HI PRES RIDGE CENTERED OVER N FL WILL MOVE INTO THE W ATLC THRU THE DAY.
THIS IS DUE TO HIGH PRESSURE PARKED OVER NORTH FLORIDA. WITH THE RIDGE SPREADING EASTWARD. THE AREA OF HIGH PRESSURE MENTIONED ABOVE WILL SAG TO THE SOUTH WHILE STRETCHING OUT TO THE EAST. DO NOT EXPECT MUCH ON THE WAY OF PRECIPITATION THROUGH THE SHORT TERM WITH HIGH PRESSURE IN CONTROL. HAWK CHANNEL WEST OF THE SEVEN MILE BRIDGE. AND NORTH OF THE LOWER KEYS DUE TO THE OBSERVATIONS FROM SMITH SHOAL LIGHT HAVE BEEN 15 TO 20 KNOTS CONSISTENTLY THIS MORNING. AND THE RIDGE TURNING WINDS TO THE EAST.
A COLD FRONT CURRENTLY DRAPED ACROSS THE OKLAHOMA PANHANDLE WILL CONTINUE MOVING SOUTH THROUGH THE PANHANDLES. LEESIDE TROUGHING WILL ONCE AGAIN DEVELOP LATE TONIGHT AND INTO MONDAY. IN THE LOWER LEVELS.
544 AM CST SUN FEB 28 2016 A NOTABLE COLD FRONT WILL MAKE ITS WAY ACROSS THE LOCAL FORECAST AREA THIS MORNING. IT IS PRETTY WEAK AS IS THE SURFACE COLD FRONT THAT MOVES THROUGH.
/ISSUED / LATEST REGIONAL SURFACE ANALYSIS SHOWS HIGH PRESSURE HAS SETTLED OVER SOUTH GEORGIA AND NORTH FLORIDA TONIGHT WITH EXCELLENT RADIATIONAL COOLING CONDITIONS OVER THE SOUTHERN TWO THIRDS OF THE STATE. ANOTHER TREMENDOUS DAY IN STORE AS HIGH PRESSURE SLIDES FURTHER TO THE SOUTH AND A BROADER SOUTHWEST FLOW REGIME RESULTS IN ADDITIONAL MODERATION OF THE AIRMASS. MOISTURE WILL BE A LIMITING FACTOR BUT SINCE WHAT IS THERE WILL BE AT THE LOW LEVELS. WILL SHADE ON THE HIGH SIDE OF GUIDANCE FOR POPS.
A COLD FRONT APPROACHING THE COAST WILL INCREASE VERTICAL MIXING CAUSING VALLEY TEMPERATURES TO WARM OVER THE NEXT FEW HOURS AS CLOUDS AND SHOWERS ARRIVE. WEAK, TRANSIENT HIGH PRESSURE AT ALL LEVELS BUILDS OVER US TONIGHT AND MUCH OF TOMORROW, AND THIS WILL BE A DRY PERIOD FOR ALL LOCATIONS. A WARM FRONT MAY BRING SOME RAIN LATE TOMORROW AND TOMORROW NIGHT, ESPECIALLY AT THE COAST AND OVER THE UMPQUA.
A WEAK COLD FRONT WILL BRING A PERIOD OF LIGHT RAIN THIS MORNING.
THE LOW LEVEL WINDS ARE LIGHTER. THE FRONT STALLS ACROSS CENTRAL TEXAS TONIGHT AND DISSIPATES ON MONDAY AS SURFACE PRESSURES FALL IN THE PLAINS AHEAD OF ANOTHER UPPER LEVEL TROUGH MOVING ACROSS THE GREAT BASIN.
WV IMAGERY THIS MORNING SHOWING A SIGNIFICANT LACK OF MOISTURE IN THE MID/UPPER LEVELS AS MID/UPPER RIDGE REMAINS PARKED OVER THE REGION. NEXT SYSTEM TAKING SHAPE OVER THE PLAINS MONDAY/MONDAY NIGHT WILL DRAW THE WEAK SURFACE BOUNDARY BACK NORTHWARD AS A WARM FRONT MONDAY NIGHT AND TAKE THE PESKY LIGHT SHOWERS WITH IT. MAXES SHOULD APPROACH 70 TODAY AND THE LOWER 70S MONDAY.
840 AM EST SUN FEB 28 2016 HIGH PRESSURE WILL SLIDE FROM OVERHEAD TO THE EAST TODAY.
529 AM CST SUN FEB 28 2016 A cold front will approach and move through the Ozarks today. The frontal passage will bring slightly cooler temperatures to the area for tonight with lows in the 30s.
Temps will be much warm than yesterday and with all the snow now melted and strong waa and lots of sunshine, believe temps will actually get warmer than first forecast. A blustery evening becomes dominated by northwesterly winds and is a bit cooler than the night before with cool air filtering in behind the front. Otherwise cooler tonight. but the cool air does not take over as Monday is slated to be another mild day with highs in the upper 50s/lower 60s with the winds becoming southerly again as the brief surface ridging slips to the east.
754 PM EDT FRI JUL 3 2015 LOW PRESSURE WILL TRACK EAST ALONG A STALLED FRONTAL BOUNDARY DRAPED ACROSS KENTUCKY. HIGH PRESSURE WILL BUILD IN SATURDAY DRYING OUT THE REGION.
1042 PM EDT FRI JUL 3 2015 HIGH PRESSURE MOVES OFFSHORE TONIGHT AND SATURDAY. LOW PRESSURE PASSES SOUTH OF THE REGION LATE SATURDAY.
1215 AM EDT SAT JUL 4 2015 SHOWER CHANCES ARE EXPECTED TO GRADUALLY DIMINISH TODAY AS AN UPPER LOW PRESSURE TROUGH SLIDES EASTWARD.
WILL GO WITH LIGHT RAIN AND EMBEDDED VCTS SATURDAY AFTERNOON ON THE 4TH AS THE UPPER TROF BRINGS IN A COOL POOL ALOFT AND ALLOWS CONVECTIVE TEMPS TO BE REACHED. SHOWERS SHOULD END SATURDAY EVENING AS THE LOW LEVEL RIDGE BUILDS IN FROM THE EAST AND THE UPPER TROF EXITS TO THE EAST. UPPER LEVEL TROF ON SATURDAY WITH AMPLE MOISTURE WILL PRODUCE SHOWERS AND THUNDERSTORMS ON THE AFTERNOON OF THE 4TH.
MAINLY OVER SOUTHEAST OKLAHOMA AS THE TROF AXIS EXITS TO THE EAST AND THE SURFACE BOUNDARY FINALLY BEGINS TO SHIFT EAST SOUTHEAST.
1254 AM EDT SAT JUL 4 2015 ISSUED AT 1250 AM SAT JUL 4 2015 HIGH PRESSURE WILL MOVE SLOWLY EAST INTO THE AREA TONIGHT AND SATURDAY RESULTING IN MAINLY CLEAR SKIES. LOWS TONIGHT WILL BE IN THE MID 50S WITH HIGHS SATURDAY IN THE LOWER 80S. WITH DRY AIR IN THE LOW LEVELS IT SEEMS PCP HAS FAILED TO MAKE IT FAR NORTHWARD THUS FAR. WITH HIGH PRESSURE MOVING OVERHEAD.
614 PM PDT FRI JUL 3 2015 SCATTERED AFTERNOON AND EVENING THUNDERSTORMS WILL CONTINUE OVER THE HIGH COUNTRY OF THE SOUTHERN SIERRA NEVADA THROUGH THE WEEKEND.
1128 PM EDT FRI JUL 3 2015 LOW PRESSURE WILL MOVE JUST SOUTH OF THE STATE LATER TONIGHT AND SATURDAY.
A RARE DRY DAY STILL ON TAP FOR INDEPENDENCE DAY AS THE FRONT TO OUR SOUTH IS EXPECTED TO DISSOLVE, WITH A HIGH PRESSURE RIDGE SETTING IN JUST TO OUR NORTH. TEMPS WILL CONTINUE TO EDGE UPWARD FROM PERSISTENCE, BUT ONLY GRADUALLY UNTIL THIS HIGH PRESSURE RIDGE EITHER EXITS OR GREATLY WEAKENS. OTHERWISE, SKIES TO BECOME CLEAR TO PARTLY CLOUDY WITH LOWS IN THE LOW TO MID 60S.
100 AM EDT SAT JUL 4 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION TONIGHT THROUGH SATURDAY.
DIURNAL HEATING BENEATH LINGERING WEAK TROF ALOFT HAS RESULTED IN WIDELY SCATTERED CONVECTION WHERE AROUND 1000 J/KG OF MLCAPE RESIDES ACROSS SOUTHEAST KANSAS. ELEVATED WARM ADVECTION DEVELOPING ACROSS THE HIGH PLAINS TONIGHT SHOULD FOSTER CONTINUED CONVECTIVE DEVELOPMENT ACROSS WESTERN KANSAS WITH THE MEAN FLOW ALOFT CARRYING SOME OF THIS ACTIVITY INTO FAR WESTERN PORTIONS OF CENTRAL KANSAS BY SATURDAY MORNING. STRONG TO SEVERE DIURNAL CONVECTION IS EXPECTED TO THE EAST OF THE LEE SIDE SURFACE TROF OVER WESTERN KANSAS BY EARLY SATURDAY EVENING. WITH FORCING FOR ASCENT FROM THE APPROACHING UPPER TROF AND DECENT ELEVATED MOISTURE TRANSPORT POSSIBLY SUPPORTING A MORE ORGANIZED MESOSCALE CONVECTIVE SYSTEM.
UPPER LEVEL TROF ON SATURDAY WITH AMPLE MOISTURE WILL PRODUCE SHOWERS AND THUNDERSTORMS ON THE AFTERNOON OF THE 4TH.
1255 AM EDT SAT JUL 4 2015 A LOW PRESSURE SYSTEM WILL MOVE SOUTH OF THE AREA ON SATURDAY AND BRING A CHANCE OF SHOWERS FOR THE HOLIDAY. HIGH PRESSURE BUILDING IN BEHIND THE LOW SHOULD CLEAR ON THE PRECIPITATION IN TIME FOR MOST FIREWORKS SHOWS SATURDAY NIGHT.
909 PM CDT FRI JUL 3 2015 ON THE SUB-SYNOPTIC SCALE, THE LINGERING SHOWER AND THUNDERSTORM ACTIVITY IS REMAINING ALONG AND SOUTHEAST OF THE MID-UPPER LEVEL TROUGH AXIS THAT SPANED ACROSS SOUTHWEST INDIANA AND ARCHED SOUTHWEST THROUGH PARTS OF SOUTHEAST MISSOURI AT 00Z SATURDAY (7 PM CDT). WARM CLOUD DEPTHS OF 12-13KFT ABOVE THE AVERAGE FREEZING LEVEL OF 12. THE UPPER TROUGH CURRENTLY MOVING THROUGH THE AREA SHOULD GRADUALLY CUTOFF FURTHER SIGNIFICANT RAINFALL PRODUCTION AS THE BOUNDARY LAYER CONTINUES TO STABLIZE OVERNIGHT. WEAK HIGH PRESSURE BUILDS IN FOR SATURDAY.
SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP ALONG PART OF A SHEARED TROUGH AXIS LYING ACROSS THE TN VALLEY AND ALONG A STALLED FRONTAL BOUNDARY THAT HAS BEEN SITTING NEAR TN/KY BORDER FOR SEVERAL DAYS. TEMPERATURES WERE ALSO QUITE A BIT COOLER THAN FORECAST AS HAS BEEN THE TREND THROUGH THE DAY.
816 PM EDT FRI JUL 3 2015 RAIN WILL CONTINUE WITH CROSSING LOW PRESSURE TONIGHT AND EARLY SATURDAY. HIGH PRESSURE WILL BUILD OVERHEAD FOR THE REMAINDER OF THE HOLIDAY WEEKEND. WARMER WEATHER CAN BE EXPECTED FOR THE START OF THE NEW WEEK. AND GIVEN MODEL SOUNDINGS REALLY ONLY PROJECTING POSITIVE AREA MAINTAINING ITSELF ABOVE THE FREEZING LEVEL IN THE SOUTHEASTERNMOST PORTIONS OF THE CWA. THUNDERSTORM CHANCES WERE RELEGATED GENERALLY TO THE RIDGES AND POINTS NEARBY. FRIES HAVE SOME LINGERING POPS ALONG THE RIDGES INTO THE EVENING HOURS AS H500 TROUGH AXIS PULLS EAST ALONG WITH THE SURFACE WAVE.
Moist boundary layer and clearing sky will be supportive of fog development as temperatures cool into the lower and middle 60s.
/ISSUED 243 PM EDT FRI JUL 3 2015/ A DEEP LAYER RIDGE WILL CONTINUE TO DOMINATE THE SOUTH FLORIDA WEATHER REGIME OVER THE NEXT SEVERAL DAYS AS IT REMAINS NEARLY STATIONARY ACROSS CENTRAL FLORIDA. THERE WILL BE SOME DAY TO DAY FLUCTUATIONS IN ITS STRENGTH AND THE EXACT LOCATION OF ITS AXIS AS SEVERAL MID LEVEL TROUGHS MOVE THROUGH A GENERAL CYCLONIC FLOW ACROSS THE EASTERN U. AND OVER THE TOP OF THE UPPER RIDGE. A STRONG MID LEVEL TROUGH WILL MOVE ACROSS THE SOUTHEAST U.
/ISSUED 205 PM CDT FRI JUL 3 2015/ Upper ridge centered over the Great Basin this morning with an upper trough extending down through the Mississippi River Valley.
943 PM EDT FRI JUL 3 2015 A WEAK FRONT OVER NORTHERN NORTH CAROLINA WILL LIFT NORTH TONIGHT AS LOW PRESSURE MOVES ACROSS TO THE NORTH.
1053 PM EDT FRI JUL 3 2015 HIGH PRESSURE WILL PROVIDE MAINLY FAIR WEATHER AND SEASONABLY WARM TEMPERATURES FOR THE HOLIDAY WEEKEND.
ESPECIALLY OVER THE HIGHER ELEVATIONS. THE HIGHER TERRAIN OF NORTHEAST ARIZONA. STORM MOTIONS ARE SLOW WHICH WILL MAKE IT A SLOW PROCESS FOR STORMS TO MOVE OFF THE HIGH TERRAIN AND COULD ALSO LEAD TO A LOCALIZED FLOODING THREAT. ESPECIALLY OVER THE HIGHER TERRAIN IN NORTHERN PORTIONS OF THE COUNTY. STORMS ARE EXPECTED TO MOVE TO THE WEST/SOUTHWEST INTO THE LOWER ELEVATIONS. HIGH PRESSURE WILL MOVE OVER ARIZONA THIS WEEKEND KEEPING A MOIST AND UNSTABLE AIR MASS IN PLACE ACROSS NORTHERN ARIZONA.
THE WESTERN ATLANTIC RIDGE STRETCHES WEST INTO THE GULF OF MEXICO. POTMARKED BY UPPER TROPOSPHERIC TROUGHS EAST OF THE BAHAMAS AND WEST OF THE YUCATAN PENINSULA. IT APPEARS THE EXPECTED DRY AIR IN THE LOWER LEVELS HAS REACHED THE EASTERN HALF OF OUR CWA.
1042 PM EDT FRI JUL 3 2015 LOW PRESSURE WILL MOVE JUST SOUTH OF THE STATE LATER TONIGHT AND SATURDAY.
849 PM EDT FRI JUL 3 2015 A LOW PRESSURE SYSTEM WILL MOVE SOUTH OF THE AREA ON SATURDAY AND BRING A CHANCE OF SHOWERS FOR THE HOLIDAY. HIGH PRESSURE BUILDING IN BEHIND THE LOW SHOULD CLEAR ON THE PRECIPITATION IN TIME FOR MOST FIREWORKS SHOWS SATURDAY NIGHT.
/ISSUED 253 PM CDT Fri Jul 3 2015/ (Tonight and Tomorrow) An upper high continues to dominate the southwestern states this afternoon with the forecast area remaining on its eastern periphery under a northwest flow aloft. The center of the upper high is forecast to move to the southeast through tomorrow with its center over West Texas by late tomorrow. The forecast area will come under a more northerly flow aloft as the northwest flow aloft shifts a little more to our east concomitant with the movement of the upper low. Expect highs tomorrow ranging from the lower 90s over the southern CWA to the mid 90s over the northern CWA.
CHATTANOOGA AIRPORT, TN 69 79 68 81 / 80 80 60 70 KNOXVILLE MCGHEE TYSON AIRPORT, TN 67 78 67 80 / 80 80 60 70 OAK RIDGE, TN 68 79 67 80 / 80 80 60 70 TRI CITIES AIRPORT, TN 66 77 65 78 / 80 80 50 70 NC.
HIGH PRESSURE SUBSIDENCE KEEPING CONVECTION FROM DEVELOPING EXCEPT OFFSHORE WHERE A FEW SHOWERS CAN BE SEEN ON RADAR. WINDS ARE GENERALLY WEST/SW IN THE LOWER 500MB OF THE ATMOSPHERE. /ISSUED 425 PM CDT FRI JUL 3 2015/ QUIET DAY ACROSS THE FORECAST AREA AS HIGH PRESSURE CONTINUES TO BE THE MAIN FEATURE DRIVING OUR WEATHER THROUGH TONIGHT.
726 PM EDT FRI JUL 3 2015 A WEAK FRONT OVER NORTHERN NORTH CAROLINA WILL LIFT NORTH TONIGHT AS LOW PRESSURE MOVES ACROSS TO THE NORTH.
814 PM EDT FRI JUL 3 2015 AN UPPER LEVEL TROUGH. MAIN TROUGH AXIS WILL STILL BE WEST OF THE AREA WITH A SOUTHWEST MID/UPPER LEVEL FLOW. HAVE TRENDED CLOSER TO THE WARMER NAM NUMBERS BASED ON LOW CHANCE OF SHRA/TSRA AND LESS CLOUDINESS. AN UPPER-LEVEL TROUGH WILL REMAIN OVER THE E CONUS THROUGH THE WEEKEND.
903 PM CDT FRI JUL 3 2015 SKIES ARE MOSTLY CLOUDY ACROSS THE FORECAST AREA THIS EVENING WITH TEMPERATURES MAINLY IN THE LOW TO MID 70S. CONVECTION SHOULD BEGIN TO DWINDLE TOMORROW FROM THE NORTHWEST COUNTIES AROUND MIDDAY TO THE SOUTHEAST COUNTIES BY EVENING AS UPPER LEVEL LOW SHARPENS IN THE TENNESSEE VALLEY. THIS WILL PROVIDE A PERIOD OF SUBSIDENCE ON THE LOW'S BACKSIDE TO SLIDE OVER THE AREA.
921 PM EDT FRI JUL 3 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION TONIGHT THROUGH SATURDAY.
SHOULD SEE GRADUAL DETERIORATION OF CIGS AND VIS OVER THE NEXT FEW HOURS AS THE LOWER ATMOSPHERE BECOMES A COUPLE OF DEGREES COOLER AND MORE SATURATED.
1048 PM EDT FRI JUL 3 2015 AN UPPER LEVEL TROUGH. MAIN TROUGH AXIS WILL STILL BE WEST OF THE AREA WITH A SOUTHWEST MID/UPPER LEVEL FLOW. HAVE TRENDED CLOSER TO THE WARMER NAM NUMBERS BASED ON LOW CHANCE OF SHRA/TSRA AND LESS CLOUDINESS. AN UPPER-LEVEL TROUGH WILL REMAIN OVER THE E CONUS THROUGH THE WEEKEND.
946 PM EDT FRI JUL 3 2015 SHOWERS WILL CONTINUE WITH CROSSING LOW PRESSURE INTO EARLY SATURDAY. HIGH PRESSURE WILL BUILD OVERHEAD FOR THE REMAINDER OF THE HOLIDAY WEEKEND.
AS AN UPPER LEVEL RIDGE COMBINED WITH A THERMALLY INDUCED TROUGH OF LOW PRES AT THE SURFACE SITS OVER WESTERN WASHINGTON.
THE ASSOCIATED BROAD AREA OF WEAK HIGH PRESSURE CENTERED OVER THE REGION WILL OTHERWISE BE STRONG ENOUGH TO ABSORB A WEAK COLD FRONT MOVING THROUGH NORTHERN LOWER MICHIGAN. AT THE SURFACE, UPSTREAM HIGH PRESSURE CENTERED OVER THE MID MS VALLEY WILL STILL MANAGE TO NOSE INTO THE LOWER PENINSULA TONIGHT WITH SOME HELP FROM THE LAKE AGGREGATE, BUT LACK OF SUPPORT ALOFT WILL STILL LEAD TO A FAIRLY NON-DESCRIPT PRESSURE PATTERN LOCALLY.
741 PM EDT FRI JUL 3 2015 LOW PRESSURE WILL MOVE JUST SOUTH OF THE STATE LATER TONIGHT AND SATURDAY.
1046 PM EDT FRI JUL 3 2015 LOW PRESSURE WILL TRACK EAST ALONG A STALLED FRONTAL BOUNDARY DRAPED ACROSS KENTUCKY. HIGH PRESSURE WILL BUILD IN SATURDAY DRYING OUT THE REGION.
746 PM EDT FRI JUL 3 2015 LOW PRESSURE WILL TRACK EAST ALONG A STALLED FRONTAL BOUNDARY DRAPED ACROSS KENTUCKY. HIGH PRESSURE WILL BUILD IN SATURDAY DRYING OUT THE REGION.
1235 AM EDT SAT JUL 4 2015 HIGH PRESSURE MOVES OFFSHORE OVERNIGHT AND SATURDAY. LOW PRESSURE PASSES SOUTH OF THE REGION LATE SATURDAY.
544 PM MDT FRI JUL 3 2015 AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL REMAIN OVER THE FORECAST AREA THROUGH SATURDAY NIGHT. HIGHER THAN NORMAL ATMOSPHERIC MOISTURE IS TRAPPED IN THIS RIDGE AND WILL CONTINUE TO SUPPORT PLENTY OF THUNDERSTORM ACTIVITY.
705 PM EDT FRI JUL 3 2015 LOW PRESSURE WILL MOVE JUST SOUTH OF THE STATE LATER TONIGHT AND SATURDAY.
OTHERWISE, SKIES SHOULD GRADUALLY CLEAR OVERNIGHT WITH SOME HIGH CLOUDS, AND LOWS IN THE LOW-MID 70S.
QUIET DAY ACROSS NE FL/SE GA AS UPPER HIGH BUILT IN FROM THE SE KEEPING SHORT WAVE ENERGY WELL TO THE NORTH. INCREASED SUBSIDENCE AND SW WINDS PRODUCED WARMER TEMPERATURES WITH READINGS REACHING THE MID 90S IN MOST AREAS.
608 PM PDT FRI JUL 3 2015 SCATTERED AFTERNOON AND EVENING THUNDERSTORMS WILL CONTINUE OVER THE HIGH COUNTRY OF THE SOUTHERN SIERRA NEVADA THROUGH THE WEEKEND.
MONSOONAL MOISTURE WRAPPING AROUND AN UPPER LOW OFF THE CALIFORNIA COAST HAS CAUSED THUNDERSTORM ACTIVITY TO KICK OFF OVER NORTHERN CALIFORNIA. A PASSING UPPER LEVEL TROUGH OVER SOUTHERN BRITISH COLUMBIA HAS STARTED TO SUPPRESS THE RIDGE THAT HAS BROUGHT RECORD HEAT TO THE AREA. HAVE ALLOWED THE HEAT ADVISORY TO EXPIRE TONIGHT AS SLIGHTLY COOLER. RED FLAG WARNINGS ARE CURRENTLY IN EFFECT FOR PORTIONS OF THE LOWER COLUMBIA BASIN AND CENTRAL OREGON. BUT STILL ON THE LOW END OF WARNING CRITERIA.
HIGH PRESSURE WILL SHIFT SLOWLY ACROSS THE STATE OVERNIGHT AND SATURDAY BRINGING QUIET WEATHER TO CENTRAL THRU SOUTHEAST ILLINOIS. UPPER LEVEL TROF (576-578 DM AT 500 MB) OVER NORTHERN INDIANA AND CENTRAL IL WAS INTERACTING WITH DAYTIME HEATING AND MODEST DEWPOINTS IN THE MID 60S GENERATING ISOLATED SHOWERS IN EAST CENTRAL IL EAST OF I-55. WEAK HIGH PRESSURE 1016 MB OVER CENTRAL NEBRASKA/IA/LOWER MI TO DRIFT SE INTO CENTRAL IL OVERNIGHT INTO SATURDAY HELPING DECREASING CLOUDS WITH NE WINDS 5-10 MPH THIS AFTERNOON BECOME LIGHT AND VARIABLE TONIGHT. AS HIGH PRESSURE DRIFTS EASTWARD THROUGH THE MIDWEST. WARMER CONDITIONS RETURN THROUGH THE WEEKEND.