Aikyam-Lab/Synoptic-Bench huggingface dataset:
330 AM PDT THU APR 7 2016 Cooler temperatures today with Delta Breeze. The low pressure area to the southwest of San Diego will move toward SoCal today, nudging the upper ridge over NorCal a little further to the north and east, and spreading clouds further north with time. Second upper low will approach California from the Pacific Friday, lifting sub-tropical moisture northward over the state.
STILL SOME LIGHT SHOWERS LEFT JUST AHEAD OF A COLD FRONT MAKING ITS WAY TOWARD THE APPALACHIANS.
402 AM EDT THU APR 7 2016 THE SYNOPTIC CONDITIONS EARLY THIS MORNING INCLUDE A COLD FRONT MOVING INTO THE FLORIDA PANHANDLE WITH THE WARM SECTOR ACROSS THE EASTERN GULF. MAINTAINING MOISTURE IN THE LOWER LEVELS WITH CLOUDINESS AND LIGHT TO MODERATE SHOWERS ACROSS THE REGION. THE COLD FRONT IS EXPECTED TO CONTINUE MOVING SOUTHEAST ACROSS THE FLORIDA PENINSULA AND EASTERN GULF TODAY WITH THE WARM SECTOR LIFTING NORTHEAST. BY 18Z TODAY THE COLD FRONT WILL LIKELY BE IN NORTH CENTRAL FLORIDA. A DRYING TREND IS STILL EXPECTED LATE TODAY AND TONIGHT WITH THE COLD FRONT EXPECTED TO PASS INTO THE FLORIDA STRAITS LATER TONIGHT. A SECONDARY COLD FRONT IS THEN FORECAST TO APPROACH THE ATLANTIC SEA BOARD AND NORTH FLORIDA AROUND 12Z FRIDAY AND CONTINUE TO PASS INTO THE PENINSULA INTO FRIDAY NIGHT WHILE REMAINING DRY.
323 PM CDT FRI OCT 9 2015 BEEN A QUIET AND COOLER AFTERNOON ACROSS THE AREA TODAY. THANKS TO A TROUGH EXTENDING SOUTH FROM LOW PRESSURE IN THE HUDSON BAY AREA AND A SW/NE ORIENTATED RIDGE AXIS INTO THE CENTRAL ROCKIES. OUTSIDE OF A FEW MID LEVEL CU IN THE WEST AND SOME UPPER LEVEL CIRRUS STREAMING OVER THE EDGE OF THE RIDGE. AS HIGH PRESSURE EXTENDS FROM THE WRN GREAT LAKES THROUGH THE CENTRAL PLAINS AND INTO NM. MODELS ARE IN GOOD AGREEMENT SHOWING THAT UPPER LEVEL RIDGING OVER THE WRN CONUS PUSHING FURTHER EAST INTO THE PLAINS. HIGH PRESSURE CURRENTLY IN PLACE IS EXPECTED TO SLIDE FURTHER EAST WITH TIME. WITH A TROUGH OF LOW PRESSURE DEVELOPING ALONG THE HIGH PLAINS. EXPECTING A WARMER DAY. WITH HIGHS CLIMBING INTO THE LOWER/MID 80S.
116 PM EDT FRI OCT 9 2015 A COLD FRONT WILL BRING SHOWERS TODAY FOLLOWED BY COOLER TEMPERATURES FOR SATURDAY.
239 PM MDT FRI OCT 9 2015 A RIDGE WILL MOVE INTO THE PLAINS BY SATURDAY.
320 PM EDT FRI OCT 9 2015 HIGH PRESSURE WILL SLOWLY NUDGE INTO THE REGION AND THIS WILL HELP BREAK UP THE CLOUDS AND EVENTUALLY CLEAR SKIES BY THIS EVENING. LOW TEMPERATURES WILL DROP INTO THE LOWER AND MIDDLE 40S OVERNIGHT. COLD FRONT HAS SWEPT THROUGH THE AREA AND HIGH PRESSURE WAS NUDGING IN THIS AFTERNOON. TEMPS SHOULD FALL INTO THE LOWER AND MIDDLE 40S.
WITH THE COOLER AIR MASS AND COME CLOUD COVER DURING THE DAY. THE HIGH WILL DEPART THROUGH THE NIGHT AND WE'LL SEE SOUTHWEST WINDS INCREASE THROUGH THE NIGHT AS THE PRESSURE GRADIENT BEGINS TO TIGHTEN. AND THIS WILL BE IN CONJUNCTION WITH THE RIDGE AXIS MOVING ATOP THE REGION.
A fast moving cold front will bring a good chance of light rain to the region Saturday night. /Pelatti 18z TAFS: Much, if not all, of the fog is now gone this late in the morning but there is still a small bit of lingering low cloud and fog that is being overrun by middle and high cloud streaming over the weak high pressure over the aviation area.
THE TROUGH WILL LAG BEHIND AND MOVE SE INTO THE CAROLINAS BY EARLY SATURDAY MORNING AND UPPER LEVEL RIDGING WILL BUILDING INTO THE OHIO VALLEY AND EASTERN KY THROUGH THE REMAINDER OF THE SHORT RANGE.
158 PM EDT FRI OCT 9 2015 A COLD FRONT WILL BRING SHOWERS TODAY FOLLOWED BY COOLER TEMPERATURES FOR SATURDAY.
200 PM EDT FRI OCT 9 2015 VFR CONDITIONS WILL CONTINUE THIS AFTERNOON AS A COLD FRONT GRADUALLY APPROACHES THE REGION.
626 PM EDT FRI OCT 9 2015 A COLD FRONT WILL MOVE OFF THE SOUTHEAST OF THE REGION OVERNIGHT. HIGH PRESSURE WILL REGAIN CONTROL OF THE WEATHER PATTERN AND RETURN FAIR AND DRY CONDITIONS FOR THE WEEKEND. THE COLD FRONT IS JUST EAST OF HARRISBURG AS OF 6PM. HOWEVER AN EXTENSIVE SHIELD OF STRATO CU EXTENDS BACK INTO THE LOWER GR LAKES AND SRN CANADA SO CLEARING OVER NORTHERN AND WESTERN HIGH TERRAIN AREAS WILL BE SLOW.
CONVECTIVE THREAT TOO LOW TO MENTION WITH COLD FRONT. A VERY RELAXED PRESSURE GRADIENT WAS LOCATED SOUTH OF THE FRONT AND MAINLY OVER THE LOWER MISSISSIPPI VALLEY. UPPER AIR ANALYSIS SHOWED WAVE IN THE NORTHERN STREAM FROM GREAT LAKES TO KANSAS AND OUR OLD PESKY UPPER LEVEL LOW OVER SOUTH OF ARIZONA YIELDING A SOUTHWEST MOIST/CLOUDY FLOW FROM TEXAS TO ALABAMA. UPPER LEVEL LOW SOUTH OF ARIZONA WILL CONTINUE TO PULL BACK WEST AND ALLOW THE WAVE/TROUGH IN THE NORTH STREAM TO DIVE SOUTHEAST TO MID ATLANTIC STATES BY SATURDAY. POSITIVELY TILTED WAVE WILL PRESS SOUTHEAST WITH SURFACE COLD FRONT AND MOISTURE AXIS APPROACHING THE NORTHWEST ZONES THIS AFTERNOON AND EVENING.
FORCING A COLD FRONT INTO SOUTHERN KANSAS. SKIES HAVE CLEARED OVERNIGHT THANKS TO INVADING HIGH PRESSURE. RIDGING CONTINUES UP THE WESTERN PORTION OF THE CONUS INTO WESTERN CANADA WITH A CLOSED LOW OVER NORTHWESTERN MEXICO. BROAD WEST TO EAST FLOW WAS NOTED WITH A SHORT WAVE TROUGH EXTENDING FROM THE ARROWHEAD OF MINNESOTA. A PLUME OF WARM AIR ALOFT WILL MOVE EAST OFF THE HIGHER TERRAIN TO THE WEST.
AS HIGH PRESSURE MOVES FROM THE NORTHEAST TO THE EAST. UPPER LOW WILL FOLLOW SHORTLY AFTER THE SURFACE FRONT. DEVELOPING LOW PRESSURE SYSTEM TO THE EAST OF JACKSONVILLE WILL ALLOW FOR PCPN TO END AROUND SUNSET FOR MOST LOCATIONS WITH JUST A FEW LINGERING ISOLD SHOWERS ALONG THE COAST AND INTO THE COASTAL WATERS. OTHERWISE COOLER AND DRIER AIRMASS WILL FILTER IN UNDERNEATH THE MID/UPPER LEVEL TROF AND BEHIND THE FRONTAL PASSAGE. WITH MIN TEMPS FALLING INTO THE LOWER TO MIDDLE 60S INLAND EVEN UNDER PARTLY TO MOSTLY CLOUDY SKIES AND IN THE MILDER UPPER 60S TO NEAR 70 ALONG THE COAST.
A GENERAL CLEARING TREND IS EXPECTED IN THE WAKE OF THE TROF THIS AFTERNOON WITH MUCH COOLER/NEAR SEASONAL TEMPERATURES.
AND HIGHS SHOULD STILL GET INTO THE LOW 60S AT LEAST IN THE WESTERN COUNTIES WITH 50S IN THE EAST. HIGH PRESSURE SETTLING OVER THE RED RIVER VALLEY THIS EARLY MORNING. O/W TODAY WILL FEATURE SOME HIGH CLOUDS DROPPING SOUTHEAST AS UPPER RIDGE BUILDS A BIT INTO THE HIGH PLAINS. LOOK FOR WARMER TEMPS WITH UPPER 50S TO LOW 60S MOST AREAS.
SATELLITE PIC SHOWED A FIELD OF SCT TO BKN CU OVER EASTERN AND SOUTHERN MIDDLE TENNEESSEE, WITH THE BACK EDGE OF THE CU FIELD MARKING THE POSITION OF A SURFACE COLD FRONT (FROM NEAR WAYNESBORO TO NEAR DALE HOLLOW LAKE).
400 PM EDT FRI OCT 9 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION FOR THE WEEKEND.
550 PM EDT FRI OCT 9 2015 COOLER TEMPERATURES ARE EXPECTED IN THE WAKE OF THE COLD FRONT EXITING TONIGHT.
414 PM EDT FRI OCT 9 2015 LOW PRESSURE WILL CROSS THE REGION THIS EVENING. DRAWING A COLD FRONT ACROSS THE REGION LATER TONIGHT. HIGH PRESSURE WILL BUILD ACROSS THE REGION SATURDAY.
147 PM EDT FRI OCT 9 2015 A LOW PRESSURE SYSTEM WILL MOVE THROUGH THE NORTH COUNTRY TODAY BRINGING A WIDESPREAD MODERATE RAINFALL TO THE AREA. HIGH PRESSURE BEGINS TO BUILD BACK INTO THE REGION LATE TONIGHT, AND WILL REMAIN OVER THE FORECAST AREA THROUGH THE HOLIDAY WEEKEND WITH DRY AND SEASONAL CONDITIONS EXPECTED. HAVE MADE SOME ADJUSTMENTS TO MAX TEMPERATURES AS SOME TEMPERATURES IN SOME LOCATIONS RUNNING A BIT WARMER THAN FORECAST. WHILE SOME AREAS A BIT COOLER THAN FORECAST. HIGH PRESSURE BEHIND THE FRONT ALONG WITH STRONG COLD AIR ADVECTION WILL USHER IN A SEASONABLY COOL AIRMASS WITH TEMPERATURES DROPPING INTO THE 30S AREA-WIDE WITH SOME UPPER 20S POSSIBLY IN THE COLDER HOLLOWS OF THE NORTHERN DACKS. HIGH PRESSURE WILL REMAIN THE DOMINANT WEATHER FEATURE FOR THE UPCOMING WEEKEND AS WELL.
149 PM EDT FRI OCT 9 2015 THE APEX OF THE 500MB TROUGH HAS SHIFTED OVER E UPPER MI. FARTHER E UNDER MORE OF AN INFLUENCE OF THE EXITING RIDGE. NAM SHOWS A 500 MB RIDGE OVER THE ROCKIES AND A TROUGH ACROSS THE EAST HALF OF THE U. THE RIDGE MOVES INTO THE PLAINS 12Z SUN WITH THE TROUGH MOVING TO THE EAST COAST 12Z SUN.
A WEAK TROUGH WILL BRUSH FAR NORTHWEST CALIFORNIA WITH THE POSSIBILITY FOR A FEW SHOWERS OR DRIZZLE TONIGHT AND SATURDAY.
312 PM EDT FRI OCT 9 2015 LOW PRESSURE WILL PUSH EAST INTO THE MARITIMES TONIGHT AS HIGH PRESSURE BUILDS IN FROM THE WEST.
104 PM EDT FRI OCT 9 2015 HIGH PRESSURE MOVES OFF THE COAST THIS MORNING. A COLD FRONT AND LOW PRESSURE AREA WILL APPROACH THE AREA THIS WEEKEND. A COLD FRONT IS APPROACHING THE VIRGINIA WITH A FEW LIGHT SHOWERS NOTED ON RADAR OVER WESTERN NC AND SW VIRGINIA. UPPER TROF WILL DRIVE A SFC COLD FRONT INTO THE AREA AFTER MIDNIGHT, REACHING SOUTHERN COASTAL SECTIONS BY AROUND DAYBREAK. CLOUDS AND MIXING WILL TEND TO KEEP TEMPS FROM FALLING MUCH UNTIL THE COLD FRONTAL PASSAGE LATE. SFC COLD FRONT WILL BE MOVING ACROSS AREA FROM NW EARLY SAT MORNING. THEN STALLING OFFSHORE DURING AFTN WITH MODELS INDICATING WDSPRD OVERRUNNING PCPN ACROSS ERN NC AS SRN END OF UPR TROF BEGINS TO CUTOFF OVER GA/SC. COULD EVEN SEE SOME FALLING TEMPS DURING THE DAY AS HIGH PRES RIDGES ACROSS N OF AREA.
605 PM EDT FRI OCT 9 2015 HIGH PRESSURE OVER THE REGION WILL MOVE OFFSHORE THIS EVENING. A COLD FRONT WILL MOVE THROUGH THE AREA TONIGHT INTO SATURDAY BRINGING SHOWERS.
1232 PM CDT FRI OCT 9 2015 QUIET AND COOL WEATHER EXPECTED TODAY AS HIGH PRESSURE BUILDS ACROSS THE REGION BEHIND THE COLD FRONT. WITH HIGHS TODAY IN THE LOWER TO MID 60S. HIGH PRESSURE BEGINS TO SHIFT EAST OF THE REGION OVERNIGHT WITH WINDS RETURNING TO THE SOUTH.
108 PM MDT FRI OCT 9 2015 A RIDGE WILL MOVE INTO THE PLAINS BY SATURDAY.
The cold front that has been advertised for the past several days has made its way to the Arkansas state line already this morning. As the front moves through the area, a cooler air mass will follow with afternoon highs today only climbing into the middle 60s to near 70.
The sfc cold front is now through the PAH forecast area, increasing stability.
340 PM CDT FRI OCT 9 2015 (Tonight and Saturday) A cold front continues to make progress to the south through west central TX this afternoon. As of 3 PM the front is south of I-20, leaving in its wake north winds of 10-20 mph and temperatures in the low/mid 70s. Otherwise, expect overnight lows in the lower 60s. Dry weather is anticipated for Saturday with temperatures rebounding back into the low to mid 80s.
A COLD FRONT WILL MOVE SOUTHWARD THROUGH THE REGION LATE TONIGHT THROUGH SATURDAY.
246 PM MDT FRI OCT 9 2015 WEAK UPPER LEVEL TROUGH WITH ONLY A FEW MID/HIGH CLOUDS WILL PASS OVER THE AREA BY EARLY EVENING. WEAK LEE TROUGHING IN LIGHT WESTERLY FLOW ALOFT WILL HELP DOWNSLOPE WARMING. MODELS SHOW FLAT UPPER RIDGING AND ZONAL FLOW OVER THE CWA SATURDAY NIGHT.
141 PM EDT FRI OCT 9 2015 A COLD FRONT WILL MOVE THROUGH THE REGION TODAY. HIGH PRESSURE WILL THEN BUILD INTO THE AREA TONIGHT AND SATURDAY.
406 PM MDT FRI OCT 9 2015 FOG STARTED OFF THE MORNING IN THE NORTH PLATTE RIVER VALLEY AND ALONG THE CHEYENNE RIDGE.
548 PM EDT FRI OCT 9 2015 A COLD FRONT WILL APPROACH THE AREA TONIGHT AND SLOWLY MOVE OFFSHORE THROUGH THE WEEKEND.
339 PM CDT FRI OCT 9 2015 PREFRONTAL TROUGH FORMING OVER THE NORTHERN CWA. CLL-UTS-JAS LINE WITH A COLD FRONT NEARING ING-TRL LINE.
418 PM CDT FRI OCT 9 2015 HIGH PRESSURE WILL PUSH SOUTH ACROSS MISSOURI RIVER VALLEY. HAVE THEREFORE KEPT TEMPERATURES WARMER THAN PREVIOUS NIGHT AND SLIGHTLY ABOVE GOING. THE HIGH PRESSURE SHIFTS TO THE SOUTHEAST TONIGHT WITH WARM ADVECTION COMMENCING. WARMER ON SATURDAY WITH HIGHS IN THE LOW TO MID 70S.
LOOK FOR SIGNIFICANTLY COOLER TEMPERATURES STARTING TOMORROW AND LASTING THROUGH THE WEEKEND AS HIGH PRESSURE BUILDS IN FROM THE NW.
313 PM CDT FRI OCT 9 2015 EARLY AFTERNOON SURFACE ANALYSIS INDICATED A RIDGE AXIS EXTNDG FM CNTRL MN INTO WRN KS. THIS WILL BE IN RESPONSE TO THE MID AND UPPER LEVEL RIDGE OVER THE PAC NW THIS AFTERNOON FLATTENING AND EXPANDING EWD IN THE WESTERN HIGH PLAINS.
NEAR TERM AND SHORT TERM SECTIONS HAVE BEEN UPDATED BELOW A COLD FRONT WILL EXIT CENTRAL INDIANA THIS EVENING. ALLOWING COOL HIGH PRESSURE OVER THE UPPER MIDWEST TO BUILD ACROSS INDIANA.
HIGH PRESSURE ALOFT WILL BRING HOT WEATHER THROUGH SATURDAY.
THE BIGGER FEATURE OF NOTE IS THE COLD FRONT CURRENTLY JUST NW OF MEMPHIS NEAR THE MISSOURI BOOTHEEL. RAIN CHANCES WILL INCREASE FROM THE NORTH LATER TODAY AS A COLD FRONT ENTERS THE STATE. 19 A COLD FRONT PUSHING THROUGH THE STATE LATER TODAY AND TONIGHT WILL BRING A CHANCE OF SHOWERS AND AN ISOLATED THUNDERSTORMS.
328 PM EDT FRI OCT 9 2015 A COLD FRONT WILL APPROACH THE AREA TONIGHT AND SLOWLY MOVE OFFSHORE THROUGH THE WEEKEND.
357 PM EDT FRI OCT 9 2015 A COLD FRONT IS MOVING ACROSS THE REGION THIS AFTERNOON BRINGING RAIN SHOWERS TO NEW YORK AND PENNSYLVANIA.
A COLD FRONT HAS PASSED SOUTH ACROSS THE EASTERN PLAINS WITH BROAD NORTHEASTERLY WINDS. TEMPERATURES ARE COOLER WITH UPPER 40S TO MID 50S ACROSS THE LOWER ELEVATIONS. EXPECT A COOLER DAY THIS AFTERNOON WITH HIGHS GENERALLY IN THE 60S TO LOWER 70S ACROSS THE PLAINS UNDER MOSTLY SUNNY SKIES AND DRY CONDITIONS. WITH DRY CONDITIONS ACROSS ALL OF SOUTHERN COLORADO OVERNIGHT TONIGHT AS HIGH PRESSURE BEGINS TO BUILD ACROSS THE ROCKIES FROM THE WEST.
640 PM EDT FRI OCT 9 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION FOR THE WEEKEND.
604 PM EDT FRI OCT 9 2015 LOW PRESSURE WILL CROSS THE REGION THIS EVENING. DRAWING A COLD FRONT ACROSS THE REGION LATER TONIGHT. HIGH PRESSURE WILL BUILD ACROSS THE REGION SATURDAY.
255 PM CDT FRI OCT 9 2015 Cooler air filtering into the region and persistent cloud cover blocking the sun, are both keeping the temperatures down in Central Illinois this afternoon. Northerly winds are expected to weaken somewhat after sunset, as the high pressure ridge axis drifts closer to the forecast area. Models do not have a good handle on the low clouds that are out there, and concern is that the clearing may be too quick. Expansive high pressure will be in control of the weather through the weekend.
A TROUGH WILL BE SWINGING THROUGH THE TENNESSEE VALLEY AND LOW SURFACE PRESSURE WILL DEVELOP OFF THE SOUTHEAST COAST OF THE UNITED STATES. THE BEST ENERGY REMAINS NORTH OF THE LOCAL AREA AS THE TROUGH SWINGS THROUGH THE SOUTHEAST. WITH THE LOW LEVEL WINDS TURNING AND ENOUGH BUOYANCY AVAILABLE.
316 PM EDT FRI OCT 9 2015 A COLD FRONT IS MOVING ACROSS THE REGION TODAY BRINGING RAIN SHOWERS TO NEW YORK AND PENNSYLVANIA. COOLER AND DRIER WEATHER WILL FOLLOW ALONG WITH HIGH PRESSURE.
236 PM EDT FRI OCT 9 2015 A COLD FRONT WILL CROSS THE REGION FROM NORTHWEST TO SOUTHEAST THIS EVENING.
RIDGE OF HIGH PRESSURE ALOFT WILL BRING DRY AND MOSTLY CLEAR SKIES OVERNIGHT. LEE SIDE TROFFING WILL KEEP WINDS AGITATED TONIGHT SO WILL SEE WARM OVERNIGHT TEMPERATURES COMPARED TO WHAT NORMAL LOWS THIS TIME OF YEAR WOULD BE. WINDS WILL INCREASE OVER WESTERN ZONES AND AREA HILLTOPS SATURDAY NIGHT AS JET STREAM BUILDS IN AND COLD FRONT APPROACHES FROM THE WEST.
137 PM EDT FRI OCT 9 2015 AVIATION A COLD FRONT WILL SLIDE SOUTH OF THE STATE OF MICHIGAN THIS MORNING WITH ALL OF THE RAIN ASSOCIATED WITH ENDING OVERNIGHT. A COOLER AND DRIER AIR MASS WILL WORK INTO THE AREA TODAY WITH HIGH TEMPERATURES FEELING MORE FALL LIKE.
331 PM CDT FRI OCT 9 2015 COLD FRONT WILL MOVE INTO AND THROUGH THE AREA TONIGHT. WEAK COLD AIR ADVECTION WILL RESULT IN HIGHS A FEW DEGREES COOLER THAN THE LAST FEW DAYS. EXPECT HIGHS TO TOP OUT IN THE LOW TO MID 80S.
AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL CONTINUE TO BUILD OVER CENTRAL CALIFORNIA DURING THE NEXT FEW DAYS AND BRING DRY WEATHER WITH A DAY TO DAY WARMING TREND THROUGH SATURDAY.
Afternoon surface analysis shows a cold front moving quickly across the Tennessee River Valley and into the Mid South. Overnight as the cold front moves further eastward, the lack of instability will result in limited thunderstorm development. Moreover, model guidance suggests that the best combination of deep layer forcing and moisture will remain just to the north and west of the region through 12z, so will keep PoPs overnight in the low chance range.
335 PM EDT FRI OCT 9 2015 COLD FRONT WILL CROSS THIS EVENING ENDING SHOWER CHANCES AND PROVIDING FOR COOLER TEMPERATURES SATURDAY.
THIS PRECIP IS ASSOCIATED WITH ELEVATED MOISTURE THAT CONTINUES TO STREAM IN FROM THE SOUTHWEST IN ASSOCIATION WITH A RETROGRADING UPPER LOW OVER THE SOUTHWEST US. THE DRIER AND COOLER AIR WILL MOVE INTO THE REGION BY SATURDAY AS NW FLOW ALOFT IS ESTABLISHED BEHIND THE TROUGH AS IT PUSHES OFF THE GULF COAST. TEMPS ARE EXPECTED BE 5-10 DEGREES COOLER THAN THEY WERE OVER THE PAST COUPLE OF DAYS.
307 PM EDT FRI OCT 9 2015 A LOW PRESSURE SYSTEM MOVING FROM THE GREAT LAKES THROUGH NEW ENGLAND WILL DRAG A COLD FRONT ACROSS CENTRAL PA TODAY. HIGH PRESSURE WILL REGAIN CONTROL OF THE WEATHER PATTERN AND RETURN FAIR AND DRY CONDITIONS FOR THE WEEKEND. TIMING REMAINS CONSISTENT AMONGST ALL GUIDANCE WITH COLD FRONT PASSING THRU UNV BY 18Z AND LNS BETWEEN 21Z AND 00Z.
WITH THE CLEARING LINE JUST REACHING THE HIGHWAY 20 CORRIDOR BETWEEN DUBUQUE AND INDEPENDENCE. THE FORECAST HAS BEEN UPDATED FOR THE SLOWER CLEARING AND SLIGHTLY COOLER HIGHS AROUND 60 TO THE LOWER 60S. HIGH PRESSURE USHERED INTO THE AREA BEHIND A COLD FRONT EARLY THIS MORNING. WINDS REMAINED NEAR 10 KTS OVERNIGHT AS THE COOLER. ASSOCIATED WITH THE CAA WAS HELPING TO KEEP TEMPS WARMER ACROSS THE AREA TONIGHT. HIGH PRESSURE ACROSS THE AREA WILL PERSIST THROUGH THE SHORT TERM AS NW FLOW ALOFT CONTINUES TO USHER IN COOLER AND DRIER AIR INTO THE AREA. AND AHEAD OF NEXT COLD FRONT. FAVOR THE DEEPER MIXING AND WARMER TEMPS OF GFS /MAV GUIDANCE/ GIVEN THE DRY CONDITIONS.
241 PM EDT FRI OCT 9 2015 HIGH PRESSURE OVER THE REGION WILL MOVE OFFSHORE THIS AFTERNOON. A COLD FRONT WILL MOVE THROUGH THE AREA TONIGHT INTO SATURDAY BRINGING SHOWERS.
546 PM EDT FRI OCT 9 2015 A LOW PRESSURE SYSTEM MOVING FROM THE GREAT LAKES THROUGH NEW ENGLAND WILL DRAG A COLD FRONT ACROSS CENTRAL PA TODAY. HIGH PRESSURE WILL REGAIN CONTROL OF THE WEATHER PATTERN AND RETURN FAIR AND DRY CONDITIONS FOR THE WEEKEND. TIMING REMAINS CONSISTENT AMONGST ALL GUIDANCE WITH COLD FRONT PASSING THRU UNV BY 18Z AND LNS BETWEEN 21Z AND 00Z.
1153 AM MDT FRI OCT 9 2015 PLENTY OF HIGH CLOUDS STREAMING ACROSS CENTRAL AND SOUTHWEST MT THIS MORNING AS LATEST MOISTURE PLUME MOVES ALONG THE EASTERN FLANK OF THE HIGH PRESSURE RIDGE CENTERED ALONG THE WA/OR/ID BORDER.
1135 PM MDT SUN AUG 30 2015 LATEST ANALYSIS SHOWS SURFACE COLD FRONT HAS MOVED THROUGH MOST OF THE FORECAST AREA AND IS NOW A LITTLE EAST OF LEWISTOWN AND BOZEMAN. SHARP COLD FRONT JUST REACHING WESTERN MT AT 3:00 PM WILL SWEEP THRU CENTRAL/SOUTHWEST MT THIS EVENING. GUSTY WINDS ARE EXPECTED TONIGHT BEHIND THE COLD FRONT WITH LOCATIONS MAINLY ALONG/NORTH OF A LINCOLN-TO-LEWISTOWN LINE SEEING WINDS OF 25-30 MPH CONTINUING THROUGH THE OVERNIGHT HOURS. THIS WILL BE RESPONSIBLE FOR SCATTERED THUNDERSTORMS THIS EVENING AND A COLD FRONTAL PASSAGE OVERNIGHT WITH BRISK WEST WINDS THROUGH MONDAY. THE COLD FRONT HAS ENTERED NORTHWEST MONTANA AND WILL BE CROSSING THE CONTINENTAL DIVIDE THIS AFTERNOON AND THROUGH CENTRAL/SW MONTANA THIS EVENING. THE HIGH WIND WARNING ALONG THE ROCKY MOUNTAIN FRONT HAS BEEN EXTENDED THROUGH 3AM MDT.
WEAK HIGH PRESSURE WILL COVER THE AREA THE REMAINDER OF THE WEEK. WITH THE COASTAL COUNTIES BEING FAVORED FOR THE HIGHER TOTALS BASED ON TRAJECTORY OF PRECIP SHIELD. LOWS TONIGHT IN THE LOWER TO MID 70S. MID LEVEL RIDGING WILL BE THE MAIN FEATURE THROUGH THE PERIOD.
WILL CONTINUE TO SEE PATCHES OF LIGHT RAIN ACROSS THE REGION THROUGH THE NIGHT AS A WEAK AREA OF LOW PRESSURE LIFTS THROUGH THE REGION.
349 AM CDT MON AUG 31 2015 NO SIGNIFICANT CHANGES TO THE FORECAST THIS MORNING AS AN UPPER LOW OVER THE SOUTHEAST CONTINUES TO PUSH OVER TO THE EAST COAST. EXPECT SEASONAL TEMPERATURES MEANING HIGHS IN THE LOWER 90S AND OVERNIGHT LOWS IN THE LOWER 70S. 13/MH IN THE LONG RANGE EXPECT RAIN CHANCES TO INCREASE SOME GOING INTO THE LATTER HALF OF THE WEEK AND GOING INTO THE WEEKEND AS AN UPPER LEVEL LOW SETS UP OVER THE AREA.
THE COLD FRONT HAS MOVED THROUGH THIS AREA AND WINDS HAVE SWITCHED TO THE NORTHWEST AND WERE GUSTY FOR A BRIEF TIME BUT HAVE SINCE RELAXED INTO THE 10 TO 20 MPH RANGE. A SEASONABLY STRONG COLD FRONT WILL CROSS THE REGION TONIGHT AND LEAD INTO A PERIOD OF QUIET WEATHER MONDAY AND TUESDAY. THE 12 UTC MODELS AND MORE CONTEMPORARY HRRR MODEL RUNS ARE IN GENERAL AGREEMENT IN SHOWING THE COLD FRONT MOVING THROUGH THE LIVINGSTON AREA BETWEEN 6 PM AND 9 PM MDT. A RED FLAG WARNING CONTINUES THROUGH THE EVENING TO CONVEY THE RISK THIS COLD FRONTAL PASSAGE WILL PRESENT FOLLOWING LATE-AFTERNOON MIX-OUT OF GUSTY SOUTHWEST WINDS AND DRYING IN SOUTH CENTRAL MT. THE POST-FRONTAL AIR MASS WILL BE COOLER.
75-2" this morning and expected to gradually increase a bit as the trough lifts north through the day. Elsewhere, much drier air will be present with partly cloudy skies and highs in the low 90s.
414 AM CDT MON AUG 31 2015 AN ELONGATED UPPER RIDGE STRETCHED FROM THE SOUTHERN ROCKIES NORTHEAST INTO THE GREAT LAKES EARLY THIS MORNING. WITH A RATHER DRY AIRMASS ALOFT OVER THE SOUTHERN HIGH PLAINS WITHIN THE UPPER RIDGE AXIS. WHICH IS ONE OF THE LOWER VALUES WE/VE SEEN THIS SUMMER. SOUTH/SOUTHWEST WINDS WILL GET A LITTLE BREEZY TODAY AS THE LEE TROUGH DEEPENS. WHICH COMBINED WITH WARMING H85 TEMPS SHOULD RESULT IN HIGH TEMPS A FEW DEGREES WARMER THAN YESTERDAY IN MOST LOCATIONS. SOUTH/SOUTHWEST WINDS WILL AGAIN BE A BIT BREEZY ON TUESDAY AS THE LEE TROUGH REMAINS IN PLACE.
THIS WARM AND MUGGY PATTERN WILL CONTINUE THROUGH THE REST OF THE WORK WEEK AS AN UPPER LEVEL RIDGE SETS UP OVER THE REGION. EFFECTS FROM WAA INDUCED CLOUDS/DPVA ASSOCIATED WITH VORT MAX SHOULD LIMIT HIGHS TO THE LOWER TO MID 80S FOR MOST LOCATIONS.
THE MID LEVEL AND STORM FLOW REMAIN WEAK WITH THE TROUGHINESS THROUGH THE REGION NORTH OF US NOT DIGGING MUCH. AND THE NEARBY RIDGE CONTINUING TO WEAKEN WITH THE REMNANT CENTER HANGING ON IN CHIHUAHUA. FOR TODAY WE SHOULD BENEFIT FROM A LITTLE MORE COOLING IN THE MID LEVELS AS THE HIGH PRESSURE CONTINUES TO WEAKEN.
UPPER LEVEL HIGH PRESSURE WILL THEN STRENGTHEN AND KEEP US IN A RATHER STAGNANT PATTERN. CLOUDS TONIGHT WILL KEEP TEMPERATURES IN THE MIDDLE 60S EAST OF THE BLUE RIDGE WITH UPPER 50S/LOWER 60S TO THE WEST. EXPECTING 500 MB RIDGE TO BUILD OVER THE EASTERN UNITED STATES BY TUESDAY NIGHT.
652 AM EDT MON AUG 31 2015 HIGH PRESSURE AT THE SURFACE AND ALOFT WILL BRING THE AREA VERY WARM TEMPERATURES AND DRY WEATHER THROUGH MID WEEK. MAX TEMPS WILL RANGE IN THE LOWER TO MIDDLE 80S. A STRONG UPPER LEVEL RIDGE WILL BUILD OVER THE NORTHEAST THROUGH THE PERIOD WITH H5 HEIGHTS NEAR 590 DM ON TUESDAY.
344 AM EDT MON AUG 31 2015 HIGH PRESSURE WILL REMAIN ANCHORED OFFSHORE TODAY. A TROUGH AXIS WILL PIVOT ACROSS THE REGION THIS AFTERNOON. HIGH PRESSURE WILL REFOCUS OVER THE CENTRAL APPALACHIANS AND UPPER OHIO VALLEY TUESDAY. PASSAGE OF H5 TROF AXIS TO THE NE. THE UPR TROF WL CROSS MID-LT AFTN.
302 AM CDT MON AUG 31 2015 UA RIDGING CENTERED TO OUR WEST CONTINUED TO EXPAND EWRD ACROSS THE REGION. WATER VAPOR SATELLITE IMAGERY FURTHER PROVES THE DOMINANCE OF THE SAID UA RIDGE. ALTHOUGH SFC LEE TROUGHING WILL DEEPEN A BIT THIS AFTN /WHICH WILL ENCOURAGE SLIGHTLY BREEZY S-SW SFC WINDS/. STORMS WILL LIKELY BE MAINTAINED ACROSS THE HIGHER TERRAIN OF NERN NM AND SERN CO. THE PRESENCE OF THE UA RIDGE AND A SLIGHT UPTICK IN 850 TEMPS SUGGESTS ANOTHER WARM DAY IS ON TAP /90S/ FOLLOWED BY A SEASONABLY WARM NIGHT /60S AND 70S/. UPPER RIDGING TO REMAIN OVER THE SRN HIGH PLAINS WHILE AN UPPER TROUGH OVER THE WRN CONUS EDGES EWD.
MODEL FORECASTS STILL SHOW THE UPPER LEVEL LOW SLIDING NE ALONG THE APPALACHIANS OVERNIGHT AND INTO MONDAY. THE LOW WILL WEAKEN AS IT MOVES EAST ALONG THE NC/VA BORDER MONDAY. AS WESTERN ATLANTIC RIDGE PUSHES INTO THE AREA.
407 AM EDT MON AUG 31 2015 HIGH PRESSURE AT THE SURFACE AND ALOFT WILL BRING THE AREA VERY WARM TEMPERATURES AND DRY WEATHER THROUGH MID WEEK. MAX TEMPS WILL RANGE IN THE LOWER TO MIDDLE 80S. A STRONG UPPER LEVEL RIDGE WILL BUILD OVER THE NORTHEAST THROUGH THE PERIOD WITH H5 HEIGHTS NEAR 590 DM ON TUESDAY.
BUT AS THEY APPROACH THE MID-LEVEL THERMAL RIDGE AXIS OVER CENTRAL NORTH DAKOTA. A COLD FRONT WAS PROPAGATING ACROSS THE HIGHWAY 83 CORRIDOR.
333 AM CDT MON AUG 31 2015 (Today and Tonight) The weak upper level low that aided in the development of shower and thunderstorms activity yesterday afternoon is located across the Texas Hill Country. Highs today will be slightly warmer than what we saw yesterday, generally in the low to mid 90s.