Aikyam-Lab/Synoptic-Bench huggingface dataset:
HIGH PRESSURE ALOFT WILL KEEP SKIES CLEAR TO MOSTLY CLEAR FOR MUCH OF THE FORECAST AREA TONIGHT. HIGH PRESSURE ALOFT WILL KEEP SKIES MOSTLY CLEAR TONIGHT THROUGH SUNDAY AFTERNOON WITH WIDESPREAD VFR CONDITIONS PREVAILING.
BUT AS THE CENTER OF AN AREA OF HIGH PRESSURE SLIDES SOUTH OF THE REGION THE LAKE EFFECT RAIN WILL SLIDE TO THE EAST SIDE OF LAKE MICHIGAN ON SUNDAY. (SUNDAY NIGHT THROUGH SATURDAY) AS THE UPPER LEVEL TROF LIFTS OUT OF THE NORTHEAST AT THE BEGINNING OF THE PERIOD WITH HEIGHT THEN BUILDING INTO MIDWEEK. BY THU A 5H WAVE TROF TRAVERSES THE NORTHERN PLAINS INTO THE GTLKS REGION WHILE A WEAK SURFACE FRONT PUSHES INTO THE SOUTHERN GTLKS. AS A SECOND 5H WAVE TROF MOVES TOWARD THE GTLKS.
HIGH PRESSURE OVER THE AREA WILL BREAK DOWN SUNDAY AFTERNOON AND MOISTURE WILL BEGIN TO SPREAD INTO SOUTHWEST UTAH.
AS UPPER TROF/LOW MOVES INTO THE PLAINS THIS WEEKEND.
943 PM EDT FRI MAY 8 2015 A COLD FRONT WILL APPROACH THE AREA FROM THE NORTHWEST TONIGHT AND EARLY SATURDAY AS AN UPPER LEVEL RIDGE MOVES EAST TO NEW ENGLAND.
STRONG UPPER LOW LOCATED ACROSS SOUTHERN CALIFORNIA/NEVADA. CALIFORNIA UPPER LOW TRACK INTO EASTERN COLORADO LATE SATURDAY.
A WEAKENING YET PRONOUNCED UPR RIDGE ORIENTED SW-NE ACROSS THE REGION WILL MAINTAIN GENERALLY DRY/STABLE AND WARM CONDITIONS ACROSS THE FORECAST AREA.
THE COLD UPPER LOW WILL MOVE SLOWLY ACROSS THE SOUTHERN GREAT BASIN LATER TONIGHT THROUGH SATURDAY EVENING.
WEAK HIGH PRESSURE CURRENTLY OVER THE EASTERN PART OF THE STATE WILL SLOWLY GET PUSHED EASTWARD TONIGHT AS LOW PRESSURE WINDS UP OVER EASTERN COLORADO/WESTERN KANSAS.
WATER VAPOR SATELLITE TRENDS THIS AFTERNOON INDICATE REMNANTS OF AN MESOSCALE CONVECTIVE VORTEX MOVING ACROSS THE LOWER MISSISSIPPI VALLEY.
TONIGHT AND SATURDAY A COLD FRONT WAS MOVING ACROSS NORTHEAST WISCONSIN THIS AFTERNOON. COLD FRONT WILL CONTINUE TO WORK ACROSS NORTHEAST WISCONSIN FOR THE REMAINDER OF THE AFTERNOON.
LARGE SCALE FORCING FOR ASCENT WILL INCREASE BY THIS TIME AS A POTENT CLOSED UPPER LOW CURRENTLY CENTERED NEAR LAS VEGAS TREKS EASTWARD. HEIGHT FALLS AHEAD OF THE UPPER LOW WILL INDUCE LOW-LEVEL WARM AIR AND MOISTURE ADVECTION OVERNIGHT AS A SOUTH/SOUTHEASTERLY LOW-LEVEL JET STRENGTHENS TO 30-40 KTS. ANOTHER ROUND OF THUNDERSTORMS WILL BE POSSIBLE SATURDAY MORNING AS A STRONG UPPER- LEVEL LOW PRESSURE SYSTEM APPROACHES. UPPER LEVEL LOW CONTINUES DIGGING SOUTH AS IT TRACKS EASTWARD ACROSS SOUTHERN CALIFORNIA AND INTO ARIZONA THIS AFTERNOON. THINGS CHANGE DURING THE OVERNIGHT HOURS AND EARLY SATURDAY MORNING AS THE UPPER LEVEL LOW MOVES OVER THE FOUR CORNERS REGION. THE THREAT FOR SEVERE WEATHER IS EXPECTED TO SHIFT FROM WEST TO EAST THROUGH THE PANHANDLES AS THE DRYLINE PROGRESSES EASTWARD AND THE UPPER LEVEL LOW SLOWLY LIFTS NORTHWARD.
837 PM EDT FRI MAY 8 2015 A WARM FRONT WILL APPROACH OVERNIGHT. A COLD FRONT WILL APPROACH NORTHERN AREAS LATER SATURDAY.
HIGH PRESSURE WILL MAINTAIN RAIN FREE CONDITIONS THROUGH MOST OF SATURDAY.
950 PM MST FRI MAY 8 2015 CORRECTED SYNOPSIS LOW PRESSURE WILL USHER IN BREEZY CONDITIONS AND COOLER TEMPERATURES TO THE REGION THIS EVENING.
Surface observations from across the area indicate that the surface cold front is still south of the forecast area, and that has kept cool and relatively dryer conditions for the forecast area. However, should some afternoon heating occur within some breaks in the clouds the low level shear would be favorable to get good turning, and even though mid level flow isn't all that good, a right moving storm would yield very good storm relative flow, causing some pretty impressively clockwise rotating hodographs.
MUCH COOLER TEMPERATURES AND A FEW SHOWERS OR THUNDERSTORMS MAINLY NORTH OF TUCSON.
927 PM CDT FRI MAY 8 2015 UPDATED AVIATION PORTION FOR 06Z TAF ISSUANCE AND NEW INFORMATION ADDED TO UPDATE SECTION COLD FRONT SURGING SWD DOWN THE BAY HAS REACHED GRB. TONIGHT AND SATURDAY A COLD FRONT WAS MOVING ACROSS NORTHEAST WISCONSIN THIS AFTERNOON. COLD FRONT WILL CONTINUE TO WORK ACROSS NORTHEAST WISCONSIN FOR THE REMAINDER OF THE AFTERNOON.
A COLD FRONT ACROSS WISCONSIN AND EASTERN IOWA WILL MOVE INTO NORTHWEST INDIANA LATE TONIGHT AND BECOME STATIONARY ACROSS CENTRAL INDIANA SATURDAY.
IF THE LOWER CLOUDS DO DEVELOP TONIGHT. IT WILL BE COOLER AROUND LAKE SUPERIOR WITH AN ONSHORE FLOW. A LARGE AREA OF LOW PRESSURE WILL APPROACH FROM THE SOUTH SATURDAY NIGHT. WINDS WILL BE INCREASING THROUGH THE NIGHT AROUND LAKE SUPERIOR DUE TO INCREASING PRESSURE FALLS AHEAD OF THE LOW.
BUT SFC DEWPOINTS HAVE CLIMBED INTO THE LOWER 60S.
1242 AM EDT SAT MAY 9 2015 A WARM FRONT WILL APPROACH OVERNIGHT. A COLD FRONT WILL APPROACH NORTHERN AREAS LATER SATURDAY.
926 PM EDT FRI MAY 8 2015 HIGH PRESSURE WILL REMAIN OVER THE MID-ATLANTIC THROUGH SATURDAY.
851 PM PDT FRI MAY 8 2015 CONVECTION WAS GRADUALLY WINDING DOWN AS TEMPERATURES COOLED AND UPPER LOW EVER SO SLOWLY MOVED EASTWARD TOWARD THE FOUR CORNERS REGION.
CURRENTLY THERE IS NOT A LOT OF MID CLOUDS OUT THERE UNTIL YOU GET WELL WESTWARD CLOSER TO THE UPPER LOW. NORTHEAST TO EASTERLY FETCH OF AIR WILL CONTINUE THROUGH THE DAY AS THE UPPER LOW TO THE WEST INCHES CLOSER TO OUR FORECAST AREA. BUT THE LOW LEVELS WILL REMAIN DRY UNTIL SATURDAY NIGHT. HIGHS WILL LIKELY ONLY REACH THE UPPER 50S AROUND CHAMBERLAIN AND THE LOWER BRULE AREA DUE TO ABUNDANT CLOUD COVER AND DEVELOPING SHOWERS. WITH THE UPPER LOW ALREADY DRAWING CLOSE.
Latest sfc analysis shows the dryline has backed up against the wrn mtns, under SW flow aloft as an upper lvl trough approaches the 4 Corners. Saturday an upper low in the desert southwest will move east into the Rockies increasing westerly flow and pushing the dryline farther east so the only PoPs will be in the extreme southeastern Permian Basin and lower Trans Pecos. Some of the stronger mid level westerlies will mix into the higher elevations of the Guadalupe Mountains where a High Wind Watch remains in effect.
806 PM EDT FRI MAY 8 2015 A COLD FRONT WILL APPROACH THE AREA FROM THE NORTHWEST TONIGHT AND EARLY SATURDAY AS AN UPPER LEVEL RIDGE MOVES EAST TO NEW ENGLAND.
ELEVATED THUNDERSTORM ACTIVITY IS EXPECTED THIS EVENING AS THE LOW LEVEL JET DEVELOPS.
STRONG UPPER RIDGE CENTERED OFFSHORE WITH A DRY NORTHERLY FLOW OVER THE REGION TONIGHT INTO SATURDAY.
H7 TEMPS WILL BE RIGHT AROUND FREEZING AS THE COLD CORE LOW MOVES EWRD ALONG THE CO/NM BORDER. THE NAM PAINTS PRECIP FOR ALL HIGHER TERRAIN ALONG THE CONTINENTAL DIVIDE WITH TEMPS STILL RIGHT AROUND OR JUST BELOW FREEZING. THE CLOSED LOW WILL BE OVER ERN CO AS PRECIP JUST ABOUT ENDS FOR OUR CWA AND FOCUSES ON THE FRONT RANGE.
EARLY AFTN SURFACE ANALYSIS INDICATED RIDGE AXIS FROM THE DAKOTAS DOWN INTO CNTRL NEB. AS THE CLOSED LOW OVER THE DESERT SOUTHWEST MOVES INTO THE HIGH PLAINS ON SAT LOW TO MID LEVEL WAA WILL SIGNIFICANTLY INCREASE ACROSS THE CNTRL PLAINS. BOTH THE SURFACE AND 850 MB WARM FRONTS WILL BEGIN TO SURGE TO THE NORTH THROUGH THE AFTERNOON. THERE IS SOME THREAT OF SEVERE WEATHER ON SAT EVNG/OVERNIGHT AS WELL AS THE LOW TO MID LEVEL WIND FIELDS INCREASE.
1022 PM EDT FRI MAY 8 2015 A LARGE RIDGE OF HIGH PRESSURE WILL MAINTAIN FAIR AND WARM WEATHER OVER THE REGION THROUGH THIS WEEKEND.
THE UPPER LEVEL LOW PRESSURE GENERATING ALL THIS SHOWER ACTIVITY IS NOW OVER LAS VEGAS AND CONTINUES TO MOVE EAST. WINDS TOMORROW ARE STILL EXPECTED TO SWITCH OUT OF THE NORTHWEST AND STRENGTHEN BEHIND THE DEPARTING LOW PRESSURE. TOMORROW WILL BE SLIGHTLY WARMER WITH MORE GUSTY WINDS. AN UNSEASONABLY COLD LOW PRESSURE SYSTEM WILL MOVE TOWARD THE FOUR CORNERS REGION TONIGHT WITH SHOWERS TAPERING OFF THIS EVENING.
Upper level low pressure is now beginning to take the turn east across southern California. At the surface, a cold front extends from east-central New Mexico, northeast into southeastern Kansas and then northeastern Missouri. Generally speaking, this cold frontal position is further south than what we saw 24 hours ago. Models have then backed off and are slightly faster with short wave ridging which had been slated to move across the region from later Saturday morning into Saturday afternoon. Additionally, models now indicate some sort of weak short wave trough approaching from the southwest later in the afternoon.
BECMG 10 TO 15 KTS BY AROUND 09/21Z AS GRADIENT TIGHTENS INVOK UPPER TROUGH APPROACHING LATER IN WKND.
A LARGE AREA OF LOW PRESSURE HAS MOVED ONSHORE AND IS SPINNING OVER THE SOUTHWESTERN CONUS. AHEAD OF THIS LOW. A LOW PRESSURE SYSTEM WILL SHOOT OUT OF THE SW UNITED STATES AND INTO THE PLAINS SATURDAY AND A WARM FRONT WILL BEGIN TO WORK ITS WAY INTO THE STATE BY THE AFTERNOON. STORMS SHOULD INITIATE ALONG THE WARM FRONT AS THE LOW LEVEL JET KICKS IN COUPLED WITH A PUSH OF VORTICITY AND THETA-E ADVECTION.
900 PM PDT FRI MAY 8 2015 MOSTLY CLOUDY SKIES WILL CONTINUE INTO SATURDAY MORNING WITH FAIR SKIES RETURNING FOR THE REST OF THE WEEKEND AS HIGH PRESSURE BUILDS INTO THE REGION.
A STRONG UPPER LEVEL RIDGE WILL BRING WARM AND DRY WEATHER TO WESTERN WASHINGTON TONIGHT THROUGH SATURDAY.
WE REMAIN SANDWICHED BETWEEN SUBTROPICAL STORM ANA TO OUR EAST AND A LOW PRESSURE SYSTEM ACROSS THE CENTRAL PLAINS. A LARGE COMPLEX OF THUNDERSTORMS HAS FORMED NEAR THE LOW TO OUR WEST.
UPPER LEVEL TROUGH CURRENTLY CENTERED OVER NORTHWEST ARIZONA AND CONTINUES TO SHIFT EAST. BREEZY NORTHWESTERLY CONDITIONS SATURDAY AS THE TROUGH MOVES INTO COLORADO WITH STRONGEST WINDS IN THE UPPER TREASURE VALLEY NEAR MOUNTAIN HOME.
LOWS IN THE LOW TO MID 60S AGAIN TONIGHT WITH COOLER UPPER 50S FAR NW BY GALESBURG.
WITH THE REGION BETWEEN SUBTROPICAL STORM ANA TO THE EAST AND A BUILDING RIDGE OF HIGH PRESSURE TO THE NORTHWEST, EXPECT TRANQUIL CONDITIONS TO CONTINUE.
CHATTANOOGA AIRPORT, TN 61 89 63 87 / 10 10 10 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 62 87 63 85 / 10 10 10 20 OAK RIDGE, TN 62 87 63 87 / 10 10 10 20 TRI CITIES AIRPORT, TN 57 85 58 83 / 30 20 20 30.
AS THE UPPER RIDGE PATTERN IN PLACE ACROSS THE WRN/CNTRL GULF COASTAL STATES CONTINUES TO DRIFT EWD. AND MORE PRONOUNCED CLOUD COVER OVER THE LOWER MS VALLEY NUDGES EWD. WITH THE INFLUENCE OF THE UPPER RIDGE AXIS CONTINUING TO WEAKEN ACROSS THE AREA. AS A WEAK COLD FRONT OUT OF THE CNTRL/SRN PLAINS MOVES EWD INTO THE MIDWEST/LOWER MS VALLEY REGIONS. THE ENERGY TRANSPORT LOOKS TO BECOME MORE HIGHLY SHEARED W TO E AS THE UPPER LOW/TROUGH PATTERN OUT OF THE PLAINS STATES LIFTS INTO THE GREAT LAKES AREA.
FREEZING LEVEL AT 14. HUMID SOUTHEAST FLOW WILL CONTINUE THROUGH THE WEEKEND AS A HIGH PRESSURE RIDGE CONTINUES TO DOMINATE THE MID GULF AREA. THE STRONG UPPER LEVEL LOW OVER SOUTHERN CA TODAY WILL MOVE TO THE FOUR CORNERS REGION ON SATURDAY AND THEN MOVE NORTHEAST THROUGH THE PLAINS.
A STRONG LOW PRESSURE SYSTEM WILL EJECT FORM THE ROCKY MOUNTAIN REGION AND MOVE DIRECTLY NORTHEAST TOWARD OUR AREA. WIDESPREAD PRECIP WILL ADVANCE NORTH AHEAD OF THE SURFACE WARM FRONT AS LOW LEVEL THETA-E ADVECTION WILL BE QUITE STRONG.
A WARM FRONT IS EVIDENT IN SURFACE AND SATELLITE OBSERVATIONS EXTENDING FROM SOUTHWEST OKLAHOMA. WITH ADDITIONAL STORMS LIKELY TO MAKE A MID TO LATE EVENING RUN ALONG THE RED RIVER IN RESPONSE TO AN INCREASE IN THE LOW LEVEL JET. ALTHOUGH A LOCALLY HIGHER THREAT WILL EXIST NEAR THE WARM FRONT AND ALSO ACROSS FAR SOUTHEAST OKLAHOMA WITH THE INCREASE IN THE LOW LEVEL JET. THE COLD FRONT AND DRYLINE WILL FINALLY MAKE A PUSH TOWARD THE EAST AND SOUTHEAST LATE SATURDAY AND SATURDAY NIGHT. AS THE MAIN UPPER LOW FINALLY EJECTS INTO THE CENTRAL PLAINS.
/ISSUED 345 PM CDT FRI MAY 8 2015/ MID-AFTERNOON SFC ANALYSIS SHOWS HIGH PRESSURE CENTERED OVER THE NERN GULF WHILE LOW PRESSURE SITS OVER FAR WRN TX. WATER VAPOR IMAGERY SHOWS A WEAK RIDGE IN PLACE OVER THE WRN GULF REGION. WITHIN A LONGWAVE TROF OVER THE WRN CONUS.
702 PM EDT FRI MAY 8 2015 A COLD FRONT WILL APPROACH THE AREA FROM THE NORTHWEST TONIGHT AND EARLY SATURDAY AS AN UPPER LEVEL RIDGE MOVES EAST TO NEW ENGLAND.
NORTH WINDS BEHIND THE LOW WILL PUSH SOUTH ACROSS LAKE MICHIGAN DURING THE EARLY MORNING HOURS. SHOWERS AND THUNDERSTORMS ARE STILL EXPECTED THIS EVENING AHEAD OF THE COLD FRONT. 925 MB TEMPERATURES SUPPORT HIGHS RISING INTO THE LOWER 70S OVER THE WESTERN CWA. WITH NORTHERLY LAKE WIND COMPONENT KEEPING THE LAKESHORE COMMUNITIES TO THE EAST CONSIDERABLY COOLER. SHORT WAVE RIDGING AND A DRY EASTERLY FLOW. OVER KS/NEB WITH A WARM FRONT EXTENDING EAST INTO ILLINOIS. THE 850MB WARM FRONT WILL BE PUSHING INTO SOUTHWEST WISCONSIN ACCOMPANIED BY DEEP ELEVATED WARM ADVECTION.
ANOTHER ROUND OF THUNDERSTORMS WILL BE POSSIBLE SATURDAY MORNING AS A STRONG UPPER- LEVEL LOW PRESSURE SYSTEM APPROACHES. UPPER LEVEL LOW CONTINUES DIGGING SOUTH AS IT TRACKS EASTWARD ACROSS SOUTHERN CALIFORNIA AND INTO ARIZONA THIS AFTERNOON. THINGS CHANGE DURING THE OVERNIGHT HOURS AND EARLY SATURDAY MORNING AS THE UPPER LEVEL LOW MOVES OVER THE FOUR CORNERS REGION. THE THREAT FOR SEVERE WEATHER IS EXPECTED TO SHIFT FROM WEST TO EAST THROUGH THE PANHANDLES AS THE DRYLINE PROGRESSES EASTWARD AND THE UPPER LEVEL LOW SLOWLY LIFTS NORTHWARD.
1036 PM EDT FRI MAY 8 2015 A WARM FRONT WILL APPROACH OVERNIGHT. A COLD FRONT WILL APPROACH NORTHERN AREAS LATER SATURDAY.
Upper level ridging will remain in place aloft through the short term period. At the surface an elongated area of high pressure will slowly slide across the region through Sunday night. With high pressure over the region bringing mostly clear skies and light winds, conditions will be good for radiational cooling. Temperatures are expected to fall into the lower to mid 40s. Highs tomorrow will be warmer than today, topping out in the lower to mid 70s.
155 PM CDT SAT OCT 10 2015 WATER VAPOR IMAGERY AND RAP H5 ANALYSIS SHOWED A DEPARTING UPPER LOW OVER THE GA/SC BORDER, WITH DRIER AIR ALOFT PIVOTING S/SE AROUND THE BACK EDGE OF THE DEPARTING LOW. FURTHER WEST, AN UPPER RIDGE ENCOMPASSED MUCH OF THE WESTERN CONUS, WITH OUR NEXT WEATHERMAKER/AN UPPER LOW BEGINNING TO COME ASHORE IN THE PACNW. GRADUAL CLEARING IS THE EXPECTED TREND THROUGH THE EVENING/OVERNIGHT HOURS, THOUGH, WITH HIGH PRESSURE OVER THE CENTRAL PLAINS ADVECTING SEWRD, USHERING IN COOLER/DRIER AIR. TEMPERATURES/DEWPOINTS ARE PLEASANT SO FAR THIS AFTERNOON, WITH TEMPERATURES HOVERING IN THE LOWER 70S UNDER PARTIAL CLEARING, AND TEMPS IN THE LOWER/MIDDLE 60S UNDER EXTENSIVE CLOUD COVER. DEWPOINTS ARE CONTINUING TO DROP WITH NRLY FLOW USHERING IN DRIER AIR, WITH CURRENT READINGS IN THE LOWER 50S ATTM.
236 PM EDT SAT OCT 10 2015 A COLD FRONT WILL MOVE THROUGH THE AREA THIS AFTERNOON BRINGING SHOWERS AND A FEW THUNDERSTORMS. ANOTHER COLD FRONT.
156 PM EDT SAT OCT 10 2015 HIGH PRESSURE DRIFTS ACROSS THE FORECAST AREA TONIGHT THROUGH SUNDAY NIGHT.
/ISSUED / TEMPS STARTING OUT 5-8 DEGREES COOLER THAN THIS TIME YDAY NORTH OF I-10 AND 0-5 DEGREES COOLER TO THE SOUTH.
209 PM CDT SAT OCT 10 2015 An upper low off the Baja Peninsula will continue to retrograde tonight which will allow weak upper ridging to expand over southeast New Mexico and west Texas. But before the ua ridge becomes established, moist ambient conditions in the Davis Mountains may still yield a few thunderstorms through max heating this afternoon, aided somewhat by upslope flow and very modest instability.
633 PM EDT SAT OCT 10 2015 HIGH PRESSURE WILL MOVE SOUTH OF THE REGION TONIGHT THROUGH SUNDAY.
156 PM EDT SAT OCT 10 2015 HIGH PRESSURE WILL BUILD IN TODAY BRINGING FAIR WEATHER WITH COOLER TEMPERATURES UNDER PARTLY CLOUDY SKIES.
AS DRIER AIR FINALLY MOVES IN AS THE BASE OF THE TROUGH SWINGS THROUGH OVERNIGHT. THE CLEAR CONDITIONS AND SUNSHINE WILL ALLOW FOR A WARMER DAY ON SUNDAY. BUT NORTHERLY FLOW WILL KEEP HIGHS IN CHECK IN THE LOWER 70S.
316 PM EDT SAT OCT 10 2015 HIGH PRESSURE BUILDS SOUTH OF NEW ENGLAND TONIGHT AND SUNDAY.
236 PM EDT SAT OCT 10 2015 HIGH PRESSURE DRIFTS ACROSS THE FORECAST AREA TONIGHT THROUGH SUNDAY NIGHT.
125 PM EDT SAT OCT 10 2015 HIGH PRESSURE BUILDING INTO THE REGION WILL PROVIDE THE NORTH COUNTRY WITH DRY CONDITIONS AND SEASONAL TEMPERATURES TODAY.
TONIGHT THROUGH SUNDAY A MOSTLY DRY COLD FRONT WILL MOVE INTO THE NORTHWEST TONIGHT AND SPREAD SOUTH AND EAST THROUGH SUNDAY. QUITE STRONG SOUTHWEST WINDS WILL SHIFT TO THE NORTHWEST OR NORTH BEHIND THE COLD FRONT. AFTER A GENERALLY MILD NIGHT AHEAD OF THE COLD FRONT. THERE WILL STILL BE SOME LEFT OVER GRADIENT BEHIND THE STRONG EXITING TROUGH SUNDAY EVENING FOR SOME CONTINUED NORTHWEST WINDS.
THE AFOREMENTIONED WEAK COLD FRONT WILL IMPACT NW CALIFORNIA THIS AFTERNOON AND EVENING. RAINFALL TOTALS WILL RANGE FROM A QUARTER OF AN INCH IN THE HIGHER TERRAIN OF DEL NORTE COUNTY. SOUTHWEST WINDS WILL REMAIN GUSTY FROM TIME TO TIME ALONG RIDGES AND PEAKS THROUGH LATE THIS EVENING. RIDGING BEGINS TO BUILD BACK IN OVER NW CALIFORNIA MAINTAINING DRY CONDITIONS AND SEASONABLE TEMPERATURES. MODELS CONTINUE TO BE IN GOOD AGREEMENT WITH AN UPPER LOW OVER SOUTHERN CALIFORNIA RETROGRADING WESTWARD AND SETTING UP A REX BLOCK THAT WILL BE IN PLACE THROUGH MID WEEK.
334 PM EDT SAT OCT 10 2015 HIGH PRESSURE WILL REMAIN OVER THE GREAT LAKES OVER THE WEEKEND.
226 PM CDT SAT OCT 10 2015 Spectacular fall weather will continue through the weekend as high pressure prevails. The high will pass through the area tonight. A few degrees cooler and frost would be a concern, but we think that should not be the case at least for tonight.
THESE ARE ABOUT 10 DEGREES COOLER THAN 24 HOURS AGO! VISIBLE SATELLITE SHOWS BROKEN TO OVERCAST SKIES THAT BLANKET THE REGION WITH CEILINGS CONTINUING TO IMPROVE THROUGHOUT THE MORNING/EARLY AFTERNOON. THE COLD FRONT PASSED THROUGH LAST NIGHT AND THE UPPER LEVEL LOW IS PROGRESSING THROUGH THIS MORNING. AS THE TROUGH MOVES OFF TO THE EAST. LINGERING LOW/MID CLOUD COVER ASSOCIATED WITH AN EXITING UPPER LOW PRESSURE SYSTEM TO THE E WILL CONTINUE TO SCT AND MOVE S OF THE LOCAL AREA HEADING INTO THE LATE AFTERNOON/EVENING PERIOD.
127 PM EDT SAT OCT 10 2015 HIGH PRESSURE WILL SETTLE ACROSS THE OHIO VALLEY THROUGH TONIGHT. THE HIGH WILL MOVE EAST OF THE REGION ON SUNDAY.
1051 AM PDT SAT OCT 10 2015 HIGH PRESSURE WILL GRADUALLY WEAKEN OVER THE REGION THIS WEEKEND.
329 PM EDT SAT OCT 10 2015 A COLD FRONT WILL MOVE SLOWLY OFFSHORE TONIGHT AND SUNDAY.
THE MAIN FEATURE OF NOTE EAST OF THE MISSISSIPPI RIVER IS THE UPPER LOW SPINNING OVER THE SOUTHERN APPALACHIANS. THE COLD FRONT THAT MOVED THRU CENTRAL ALABAMA LAST NIGHT IS NOW WELL OFFSHORE IN THE GULF WITH HIGH PRESSURE BUILDING INTO THE REGION FROM THE WEST. NORTHERLY SFC FLOW WILL CONTINUE TO BRING A COOLER AND DRIER AIR MASS INTO THE FORECAST AREA WHICH WILL BRING TEMPS BACK DOWN TO NORMAL VALUES OVERNIGHT. HIGH PRESSURE BOTH AT THE SFC AND ALOFT WILL KEEP CONDITIONS DRY ON SUNDAY WITH TEMPS WARMING BACK INTO THE MID 70S TO LOW 80S.
435 PM EDT SAT OCT 10 2015 HIGH PRESSURE WILL MOVE SOUTH OF THE REGION TONIGHT THROUGH SUNDAY.
216 PM EDT SAT OCT 10 2015 A COLD FRONT WILL MOVE MOVE ACROSS THE AREA THIS MORNING AND REMAIN OFFSHORE THROUGH THE WEEKEND.
SURFACE WINDS WILL STAY OUT OF THE SOUTH/SOUTHWEST AT 10 TO 15 MPH WHICH SHOULD KEEP TEMPERATURES A FEW DEGREES COOLER THAN IF THEY WERE TO GO WESTERLY. LOW TEMPERATURES SUNDAY NIGHT WILL BE SEVERAL DEGREES WARMER DUE TO INCREASING DEWPOINTS AND CONTINUED SOUTHERLY WINDS AT 10 MPH.
A fast moving cold front will bring a good chance of rain to the region tonight. Winds: A Wind advsy was issued for late Saturday afternoon and into Sunday morning associated with the aforementioned short- wave trough. And with the upper low moving over the area beginning this evening, showers (and possibly isolated thunder) will also help to transfer winds to the sfc and break or weaken any sfc- based inversion tonight that would inhibit gusts valley winds. Local studies support gusts of 50 to 60 mph on exposed mountain ridges. bz 18z TAFS: Winds ahead of a cold front are expected to increase through the afternoon.
114 PM CDT SAT OCT 10 2015 High pressure building back into the region today. Light northerly winds, then variable as the ridge axis moves over Central Illinois. Sunny and dry conditions can be expected today as high pressure moves across the area. By afternoon, the high pressure should be east enough of the area to allow southerly winds to return. Temperatures will be a roller-coaster ride over the next few days, before the upper pattern transitions to a more persistent northwest flow and a steadier period of cooler temperatures mid to late week.
NEAR TERM AND SHORT TERM SECTIONS HAVE BEEN UPDATED BELOW DRY WEATHER IS EXPECTED THROUGH THE REST OF THE WEEKEND AS STRONG HIGH PRESSURE OVER ILLINOIS SLOWLY DEPARTS TO THE EAST.
234 PM CDT SAT OCT 10 2015 LEE TROUGHING AND LOW-LEVEL THERMAL RIDGING WILL INCREASE BY SUNDAY.
TEMPS IN THE LOW TO MID 80S ACROSS THE PLAINS. MORE OF THE SAME TOMORROW AS HIGH PRESSURE BUILDS AND WINDS STRENGTHEN A BIT FROM THE WEST. SUN NIGHT A DRY COLD FRONT MOVES THROUGH SERN CO. WHICH WL BRING COOLER TEMPS FOR MON. ALTHOUGH HIGH TEMPS WL BE COOLER ON MON. THE HIGH MOUNTAIN VALLEYS ON MON WL HAVE HIGHS THAT ARE NEARLY 10 DEGREES ABOVE AVERAGE. ON TUE AN UPR RIDGE BUILDS INTO THE GREAT BASIN FROM THE SOUTH AND THE FORECAST AREA CONTINUES TO HAVE DRY NW FLOW ALOFT THROUGH WED. HIGH TEMPS OVR SERN CO WILL BE WARMER ON TUE. FOR FRI THE GFS SHOWS AN UPR TROF EXTENDING FROM NV. AHEAD OF THIS TROF. THE GFS THEN SLOWLY MOVES THE UPR TROF OVR CO ON SAT. AS A DRY COLD FRONT MOVES THROUGH SE CO.
1208 PM CDT SAT OCT 10 2015 Cool high pressure was sliding over the region this morning with readings in the middle 40s across central Missouri to the middle 50s along the Arkansas line. The combination of the cool high pressure, light winds and surface moisture from yesterday's rainfall will allow for widespread fog this morning. Temperatures will warm into the lower to middle 70s making for a very nice fall day. A tightening surface pressure gradient will bring breezy conditions to the region tonight into Sunday morning as an upper level ridge moves over the area. Upper level ridging will be in place over the Ozarks Sunday. A dry cold front will then move through the area Sunday night and bring more seasonable temperatures to the area as the upper level pattern transitions to northwesterly flow.
THIS WILL RESULT IN FALL LIKE TEMPS TONIGHT AS SFC RIDGING BUILDS OVERHEAD.
1015 AM PDT SAT OCT 10 2015 HIGH PRESSURE WILL GRADUALLY WEAKEN OVER THE REGION THIS WEEKEND.
SPEEDS WILL REMAIN LIGHT UNTIL A RAPIDLY DEEPENING LEE TROUGH INDUCES SOUTHWEST WINDS MID TO LATE MORNING SUNDAY. /ISSUED 255 AM CDT SAT OCT 10 2015/ WATER VAPOR IMAGERY THIS MORNING SHOWS THAT THE UPPER LOW WHICH BROUGHT EXCESSIVE RAINFALL TO WEST TEXAS CONTINUES TO RETROGRADE AND IS NOW LOCATED WEST OF THE BAJA PENINSULA. AN UPPER LEVEL RIDGE WILL AMPLIFY IN ITS WAKE.
107 PM EDT SAT OCT 10 2015 A COLD FRONT WILL MOVE MOVE ACROSS THE AREA THIS MORNING AND REMAIN OFFSHORE THROUGH THE WEEKEND.
A PACIFIC COLD FRONT WILL THEN CROSS THE AREA BETWEEN 05Z AND 09Z SUNDAY WITH INCREASING WESTERLY WINDS DEVELOPING.
HIGH PRESSURE. ALONG WITH WARMER THAN AVERAGE TEMPERATURES. STRONG UPPER LEVEL RIDGE AXIS OVER CENTRAL CALIFORNIA CONTINUES TO PROVIDE HOT AND DRY CONDITIONS TODAY. A TROUGH OF LOW PRESSURE WILL PUSH INLAND ACROSS THE PACIFIC NORTHWEST THIS AFTERNOON AND TONIGHT. THIS WILL WEAKEN THE RIDGE SLIGHTLY AND ALLOW A BIT MORE ONSHORE FLOW ON SUNDAY WHICH WILL ALLOW TEMPERATURES TO EDGE DOWN 2-3 DEGREES.
GUSTY WINDS WILL REDEVELOP ALONG AND WEST OF THE LARAMIE RANGE OVERNIGHT AS AN UPPER LEVEL TROUGH MOVES ACROSS THE NORTHERN ROCKIES AND DEEPENS THE LEESIDE PRESSURE TROUGH. TOMORROW THE UPPER LEVEL TROUGH WILL CONTINUE TO MOVE WESTWARD INTO MONTANA AND THE NORTHERN PLAINS. THE HIGH WIND WATCH HAS BEEN UPDATED TO ALSO INCLUDE NORTHERN CARBON AND ALBANY COUNTIES INCLUDING THE INTERSTATE 80 CORRIDOR NEAR ARLINGTON. WINDS ARE EXPECTED TO BE ON THE HIGH SIDE WITH SUSTAINED WINDS AROUND 20-25 KTS AND GUSTS UP TO 35 KTS. TEMPERATURES WILL BE SLIGHTLY COOLER OVERALL WITH THE ADDITION OF SOME HIGH CLOUDS BY THE AFTERNOON INTO THE NIGHTTIME HOURS.
244 PM EDT SAT OCT 10 2015 MODELS INITIALIZE WELL AT 18Z WITH THE UPPER LOW CURRENTLY SPINNING ACROSS NORTHEAST GA.