Aikyam-Lab/Synoptic-Bench huggingface dataset:
RIDGE OF HIGH PRESSURE IS SITUATED ACROSS MIDDLE TENNESSEE THIS EVENING WITH VFR WX AND MOSTLY CLEAR SKIES THE NEXT 24 HRS.
948 PM EST FRI JAN 29 2016 THE NEAR TERM SECTION HAS BEEN UPDATED BELOW ONE LOW PRESSURE SYSTEM WILL BRING RAIN TO CENTRAL INDIANA LATER THIS WEEKEND.
331 AM EST SAT JAN 30 2016 A QUIET WEATHER PATTERN WILL CONTINUE UNDER WEAK HIGH PRESSURE INFLUENCE.
322 AM EST SAT JAN 30 2016 HIGH PRESSURE WILL BRING DRY CONDITIONS TO SOUTH FLORIDA.
IN THE LOWER LEVELS. THE LOCAL DOPPLER RADAR HAS BEEN RAIN FREE THROUGH THE FIRST HOURS OF THIS COOLER SATURDAY. WITH DEW POINTS IN THE UPPER 40S TO THE LOW 50S.
WINDS REMAIN FAIRLY LIGHT/VARIABLE ON SAT WITH A WEAK PRESSURE GRADIENT IN PLACE DOMINATED BY HIGH PRESSURE.
An upper trough and and associated surface front were crossing central Nebraska and approaching central Kansas this afternoon. While winds are gusty from the northwest behind this front, temperatures in its wake were not much colder than ahead of it due to downslope warming off the Rockies and warm advection from the northwest in the low levels. Saturday night through Sunday night, An intense upper trough will move onshore across the pacific northwest and then dig southeast into the southwestern US. A low amplitude upper trough will move east across the northern plains, and cause a surface front to push southward across the CWA Saturday night. Light north winds will keep high temperatures a bit cooler on Sunday, with highs only reaching the mid 40s along the NE border to lower 50s across much of the CWA.
84 degrees in 1971/1911 Southwest winds will increase, and although model forecast winds are very near where they were yesterday, given the warmer temperatures and perhaps slightly more mixing than yesterday, wind speeds may be a few mph stronger.
FCST SOUNDINGS SUPPORT TEMPS IN THE UPPER 70S WITH NUMERICAL GUIDANCE A BIT COOLER. WENT A BIT WARMER THAN NUMERICAL GUIDANCE DUE TO THE DRY NATURE OF THE AIR MASS.
A DISTURBANCE ALOFT WILL MOVE ACROSS THE AREA OVERNIGHT BRINGING SCATTERED SNOW TO THE ROCKY MOUNTAINS AND THE MOUNTAINS OF SOUTHWEST MONTANA AND A MIX OF RAIN, LIGHT SNOW, AND POSSIBLY BRIEF FREEZING RAIN TO THE PLAINS. BUT BRIDGES COULD BECOME A BIT ICY.
A RIDGE OF HIGH PRESSURE EXTENDS FROM THE SOUTH CENTRAL GULF OF MEXICO INTO SOUTH AND CENTRAL FLORIDA. EXPECT COLD AIR DRAINAGE TO FUNNEL INTO AT LEAST PORTIONS OF THE MIDDLE AND UPPER KEYS ALONG WITH A FEW ISLAND COMMUNITIES DECOUPLING IN THE LOWER KEYS. THIS SHOULD RESULT IN A FAIRLY LARGE TEMPERATURE BETWEEN THE LOWER 50S TO UPPER 50S ALONG THE FLORIDA KEYS.
409 AM EST SAT JAN 30 2016 HIGH PRESSURE SHIFTS OFFSHORE TODAY ALLOWING SOUTHWEST WINDS TO BRING MODERATING TEMPERATURES.
A WEAK WARM FRONT EXTENDS SOUTHEAST FROM NW MISSOURI INTO NE ARKANSAS AND INTO NORTHERN ALABAMA. TEMPERATURES OVER NORTHEAST ALABAMA HAVE ALREADY DROPPED INTO THE LOWER TO MID 30S. WARMER AIR EXISTS ABOVE THE INVERSION. HAVE ADDED A RIDGE VALLEY SPLIT IN TEMPERATURES. NORTHWESTERLY WINDS WILL BACK TO BECOME SOUTHERLY AND LIGHT TONIGHT AS HIGH PRESSURE DOMINATES THE REGION.
814 PM EST FRI JAN 29 2016 HIGH PRESSURE WILL BUILD OVERHEAD TONIGHT BEFORE MOVING OFFSHORE DURING THE WEEKEND.
1141 PM CST FRI JAN 29 2016 WINDS HAVE GONE CALM AT THE LOWER ELEVATIONS OVER SOUTHERN AND EASTERN MIDDLE TN, ALLOWING TEMPERATURES TO DROP INTO THE MIDDLE 20S TO AROUND 30 DEGREES. EVEN THOUGH LIGHT SOUTH WINDS WILL LIKELY DEVELOP IN THESE AREAS OVER THE NEXT SEVERAL HRS AND HELP TO STABILIZE TEMPS, WILL UPDATE ZONES TO REFLECT THE LOWER OVERNIGHT MINS (WHICH ARE PROBABLY AT OR NEAR THEIR MINIMUM READINGS FOR THE NIGHT). RIDGE OF HIGH PRESSURE IS SITUATED ACROSS MIDDLE TENNESSEE THIS EVENING WITH VFR WX AND MOSTLY CLEAR SKIES THE NEXT 24 HRS.
343 AM EST SAT JAN 30 2016 HIGH PRESSURE MOVES ACROSS THE LOCAL AREA TODAY.
WATER VAPOR LOOP INDICATED UPPER LEVEL TROUGH WAS OVER THE EASTERN PARTS OF THE AREA AND CONTINUES MOVING EAST. WATER VAPOR LOOP INDICATED AN UPPER LEVEL TROUGH FROM THE MAN/SASK BORDER TO THE EASTERN ND/MN BORDER. UPPER TROUGH WILL ROTATE OVER LS BY 12Z SAT. WITH TEMPERATURES HOLDING ABOVE FREEZING NOT ANTICIPATING ANY SIGNIFICANT IMPACTS WITH PCPN AS SHOULD END BEFORE TEMPERATURES COOL DOWN. GRADUAL COOLING CONTINUES SUNDAY WITH TEMPERATURES STAYING BLO FREEZING ALL AREAS.
AN UPPER TROUGH OVER THE PACIFIC NORTHWEST WILL MOVE SOUTH TO CALIFORNIA OVER THE WEEKEND. A RATHER LARGE PATCH OF COLD AIR ALOFT WILL BE SINKING SOUTH OVER THE REGION THROUGH THE WEEKEND SO THE SNOW LEVEL WILL BE ON THE LOW SIDE.
UPPER RIDGE ON ITS WAY EAST TOWARD THE APPALACHIANS THIS EVENING.
309 AM CST SAT JAN 30 2016 MAIN CONCERN AGAIN TODAY WILL BE WITH REGARDS TO FIRE WEATHER AND THEN EARLY THIS UPCOMING WEEK WITH STORM SYSTEM THAT WILL BRING MUCH COOLER TEMPERATURES AND A CHANCE FOR RAIN/SNOW. THESE CONDITIONS ALONG WITH THE PERSISTENT OVERDOING OF THE LOW LEVEL MOISTURE BY THE MODELS SETS THE STAGE FOR PARTS OF FAR WESTERN OKLAHOMA AND WESTERN NORTH TEXAS TO AGAIN SEE RED FLAG CONDITIONS DEVELOP DURING THE AFTERNOON HOURS.
TEMPERATURES HAVE BEEN MODERATING OVER THE PAST 24 HOURS AS DEWPOINTS HAVE CREPT INTO THE LOWER 50S ACROSS SE TEXAS.
1020 PM EST FRI JAN 29 2016 A PRESSURE RIDGE WILL EXTENDING THROUGH THE FORECAST AREA TONIGHT WILL MOVE OFF THE SOUTHEAST COAST SATURDAY.
340 AM EST SAT JAN 30 2016 A HIGH PRESSURE SYSTEM, WILL PUSH OFF THE EAST COAST TODAY.
OTHERWISE DOWNSLOPE WINDS MIXING DOWN WILL LIMIT PRECIPITATION CHANCES OVER THE LOWER ELEVATIONS TONIGHT. TOMORROW LOOKS BREEZY COOLER AND UNSETTLED AS UPPER TROF SETTLES OVER THE REGION. MODEST RIDGE OVER OUR REGION WILL BE BROKEN DOWN OVER THE NEXT FEW DAYS AS A SERIES OF SHORT WAVES MOVES THROUGH ON ZONAL FLOW. THERE IS A SLIGHT CHANCE OF FREEZING PRECIPITATION OVER EAST CENTRAL MONTANA. WILL HOLD OFF ON ANY MENTION OF FREEZING PRECIPITATION AT THIS TIME. A BROAD OPEN TROUGH WILL PASS THROUGH THE FOUR-CORNERS AREA ON MON AND ROTATE THROUGH THE CENTRAL PLAINS ON TUE.
AFTER THAT A WEST COAST TROUGH DEEPENS AND THE UPPER LEVEL FLOW TRANSITIONS TO THE SOUTHWEST OVER THE PLAINS STATES. WHILE SLIGHTLY COOLER.
A WINTRY MIX MAY RESULT IN PLACES THAT SEE TEMPERATURES DROP BELOW FREEZING.
High pressure will continue to build into the area tonight with no PoPs through the near term. High temperatures today were warmer than expected but the cooling trend this evening is on track. Other than some minor short wave troughs in the westerlies, 500 mb heights will rise off the U. At the surface, the area of high pressure currently centered over the Gulf of Mexico will move east off the U. A weak cold front will stall northwest of our forecast area Sunday night.
227 AM EST SAT JAN 30 2016 HIGH PRESSURE WILL SLIDE EAST ACROSS PENNSYLVANIA THIS MORNING BEFORE SHIFTING OFF THE EAST COAST LATE TODAY AND SUNDAY.
WARM FRONT CONTINUES TO TRACK EAST ACROSS THE EASTERN CWA WITH INCREASING WESTERLY WINDS AND MODEST TEMP RISES IN ITS WAKE.
1046 PM EST FRI JAN 29 2016 HIGH PRESSURE WILL BUILD INTO PENNSYLVANIA FROM THE OHIO VALLEY TONIGHT.
Models bring a rather sharp H5 short wave across the region today but due to a lack of moisture and high pressure at the surface, only an increase in cloud cover is expected. The cold front associated with this system is forecast to cross the region from late Sunday afternoon through late Sunday night.
1105 PM CST FRI JAN 29 2016 FOR 06Z TAFS /ISSUED 1019 PM CST FRI JAN 29 2016/ A WEAK WARM FRONT EXTENDS SOUTHEAST FROM NW MISSOURI INTO NE ARKANSAS AND INTO NORTHERN ALABAMA. TEMPERATURES OVER NORTHEAST ALABAMA HAVE ALREADY DROPPED INTO THE LOWER TO MID 30S. WARMER AIR EXISTS ABOVE THE INVERSION. HAVE ADDED A RIDGE VALLEY SPLIT IN TEMPERATURES.
AS THE HIGH BEGINS TO DRIFT NEWD TOMORROW MORNING A MORE PRONOUNCED E FLOW WILL DEVELOP. /ISSUED 717 PM EST FRI JAN 29 2016/ HIGH PRESSURE CONTINUES TO BUILD INTO THE FLORIDA PENINSULA FROM THEN NORTH ALLOWING FOR THE WINDS TO CONTINUE TO DECREASE AND BECOME LIGHT AND VARIABLE TONIGHT OVER THE LAND AREAS. /ISSUED 332 PM EST FRI JAN 29 2016/ DRY WEATHER THIS WEEKEND BEFORE SHOWERS/STORMS RETURN A STATIONARY FRONT OVER THE CARIBBEAN SEA WILL SLOWLY LIFT NORTHWARD AS A WARM FRONT THIS WEEKEND AND MOVE INTO SOUTH FLORIDA SUNDAY NIGHT. AS HIGH PRESSURE OVER THE FLORIDA PENINSULA MOVES SLOWLY EAST INTO THE ATLANTIC WATERS.
Southerly winds will lead to warmer temperatures tonight through the weekend. Models are in good agreement on moving this feature and an associated cold front across the Midwest and into the Great Lakes Sunday into Sunday evening.
1000 PM CST FRI JAN 29 2016 WATER VAPOR LOOP INDICATED UPPER LEVEL TROUGH WAS OVER THE EASTERN PARTS OF THE AREA AND CONTINUES MOVING EAST. WATER VAPOR LOOP INDICATED AN UPPER LEVEL TROUGH FROM THE MAN/SASK BORDER TO THE EASTERN ND/MN BORDER. UPPER TROUGH WILL ROTATE OVER LS BY 12Z SAT. WITH TEMPERATURES HOLDING ABOVE FREEZING NOT ANTICIPATING ANY SIGNIFICANT IMPACTS WITH PCPN AS SHOULD END BEFORE TEMPERATURES COOL DOWN. GRADUAL COOLING CONTINUES SUNDAY WITH TEMPERATURES STAYING BLO FREEZING ALL AREAS.
TODAY THROUGH SUNDAY NIGHT 09Z SURFACE ANALYSIS HAD TROUGH FROM EASTERN MT INTO EASTERN CO. UPPER TROUGH PASSES WITH CONTINUED CHANCES OF PRECIPITATION. UPPER TROUGH OVER THE WEST COAST DEEPENS SIGNIFICANTLY AS MAJOR JET STREAK PLOWS INTO CA.
312 AM EST SAT JAN 30 2016 HIGH PRESSURE MOVES ACROSS NEW ENGLAND TODAY AND OFFSHORE INTO THE ATLANTIC TONIGHT. A WARM FRONT WILL LIFT NORTHEAST ACROSS THE REGION TONIGHT. EXPECT WARMER TEMPERATURES BEGINNING ON SUNDAY AND LASTING THROUGH MUCH OF THE COMING WEEK.
AS A LEE SIDE TROUGH DEEPENS. SURFACE LEE TROUGHING WILL REMAIN IN PLACE THROUGH THE WEEKEND AND CONTINUE TO BRING SOUTHERLY LOW LEVEL FLOW TO THE REGION. THE FRONT WILL ONLY BRING DRIER AND SLIGHTLY COOLER AIR.
AND LIKELY STAY ABOVE FREEZING TONIGHT FOR THE SOUTHERLY 1/2 OF THE FORECAST AREA. CAN/T RULE OUT A SHORT PERIOD OF FREEZING RAIN THOUGH. WITH A SLIGHTLY WARMER ATMOSPHERE EXPECTED. UPPER LEVEL TROUGH STILL SLATED TO SWING OUT OF THE DESERT SOUTHWEST. SUMMERY FETCH OF 850 MB MOISTURE TRANSPORT RUNNING NORTHWARD ALONG THE SYSTEM/S COLD FRONT. DEPENDING ON WHERE THE LOW ENDS UP. SFC GRADIENT TIGHTENING UP AS THE LOW STRENGTHENS/MOVES IN. IN ADVANCE OF YET ANOTHER APPROACHING UPPER LEVEL LOW PRESSURE SYSTEM. SURFACE TEMPERATURES COMING OFF A WARM DAY TODAY SHOULD HOLD ABOVE FREEZING INTO THE EVENING. SO ANY FREEZING RAIN THREAT LOOKS SMALL.
EARLY THIS MORNING A WEAK UPPER LEVEL SHORT WAVE TROUGH WAS PUSHING ACROSS EASTERN MONTANA. FREEZING RAIN. SLEET AND SNOW IS POSSIBLE WITH TEMPERATURES ALOFT WITHIN ONE OR TWO DEGREES OF FREEZING AND SURFACE TEMPERATURES ALSO HOVERING AROUND FREEZING. THE 00 UTC GLOBAL MODEL SUITE REMAINED IN GOOD AGREEMENT WITH ITS DEPICTION OF NORTHWEST FLOW ALOFT DEVELOPING ACROSS THE REGION AS A MEAN 500-MB TROUGH BECOMES ESTABLISHED OVER THE CENTRAL UNITED STATES THIS WEEK.
A WARM FRONT OVER THE AREA WILL LIFT OFF TO THE NORTHEAST TODAY.
240 AM EST SAT JAN 30 2016 WIND FLOW AROUND HIGH PRESSURE MOVING AWAY TO OUR SOUTHEAST WAS PROVIDING WARM AIR ADVECTION OVERNIGHT. A WEAKENING COLD FRONT WILL APPROACH FROM THE NORTHWEST TODAY. ANOTHER COLD FRONT WILL APPROACH KY FROM THE NW ON SUNDAY. THE WARM AIR ADVECTION WILL FAVOR RIDGE/VALLEY DIFFERENCES DURING THE NIGHT TIME AND EARLY MORNING. USED A GUIDANCE BLEND FOR THE WARMER RIDGES AND OPEN TERRAIN IN THE WEST.
ANOTHER WEATHER SYSTEM WILL SPREAD SNOW INTO THE CONTINENTAL DIVIDE OVERNIGHT AS WELL AS RAMP UP THE WINDS IN THE HIGH COUNTRY. THE SYSTEM WILL CONTINUE THE SNOW AND WIND IN THE HIGH COUNTRY. AND A WINTER WEATHER ADVISORY FOR THE HIGHER ELEVATIONS OF THE EASTERN SAN JUANS AND LA GARITAS. SNOWFALL AMOUNTS MAY BE ON THE LOW SIDE OF WARNING/ADVISORY LEVELS BUT THE COMBINATION OF WIND AND SNOW WILL CREATE HAZARDOUS CONDITIONS IN THESE AREAS. ACROSS THE LOWER ELEVATIONS. SCATTERED SNOW SHOWERS AND LOWER ELEVATION MIXED RAIN AND SNOW SHOWERS SPREADING ACROSS THE HIGH MT VALLEYS THROUGH THE EASTERN MTS AND PLAINS SATURDAY NIGHT INTO EARLY SUNDAY MORNING.
819 PM PST FRI JAN 29 2016 A strong low pressure area will track through the northeast corner of Washington into extreme north Idaho this evening spreading widespread snow, with most of the significant accumulations occurring over the mountains. The low will also deliver windy conditions to southeast Washington and north central Idaho this evening.
141 AM EST SAT JAN 30 2016 HIGH PRESSURE WILL SLIDE EAST ACROSS PENNSYLVANIA THIS MORNING BEFORE SHIFTING OFF THE EAST COAST LATE TODAY AND SUNDAY.
246 AM EST SAT JAN 30 2016 HIGH PRESSURE MOVES ACROSS THE LOCAL AREA TODAY.
308 AM EST SAT JAN 30 2016 HIGH PRESSURE MOVES ACROSS THE LOCAL AREA TODAY.
1140 PM EST FRI JAN 29 2016 AVIATION SECTION HAS BEEN UPDATED BELOW ONE LOW PRESSURE SYSTEM WILL BRING RAIN TO CENTRAL INDIANA LATER THIS WEEKEND.
A short wave over Oklahoma early this morning will zip southeastward to Georgia by 00Z gradually increasing the high altitude cirrus clouds across the region.
OVERNIGHT A WARM FRONT WILL LIFT ACROSS THE AREA AND 850 TEMPS RISE TO 7 TO 9 C. TOMORROW THE NEXT DISTURBANCE WILL RIDE ACROSS THE CENTRAL ROCKIES AND PUSH ONTO THE HIGH PLAINS FOR THE AFTERNOON. HAVE GONE WITH THE WARMER MAV/EC GUIDANCE AS THE PAST SEVERAL DAYS WE HAVE BEEN MORE OFTEN THAN NOT ABLE TO BE AT OR WARMER THAN THE WARM MAV/EC GUIDANCE. SOME DRY AIR INITIALLY IN THE LOWER LEVELS WILL LIMIT PRECIP REACHING THE GROUND. BEHIND A SURFACE COLD FRONT. WEAK CAA AND AN INCREASE NW WINDS TO 15 TO 25 MPH WILL LIMIT HIGHS TO THE LOWER 40S FAR SOUTHEAST TO THE UPPER 30S NORTHWEST.
251 AM EST SAT JAN 30 2016 HIGH PRESSURE CENTERED OVER THE SOUTHEAST STATES WILL CREST OVER OUR AREA THIS MORNING, BEFORE PUSHING OFFSHORE TONIGHT.
701 PM CST FRI JAN 29 2016 WATER VAPOR LOOP INDICATED AN UPPER LEVEL TROUGH FROM THE MAN/SASK BORDER TO THE EASTERN ND/MN BORDER. UPPER TROUGH WILL ROTATE OVER LS BY 12Z SAT. WITH TEMPERATURES HOLDING ABOVE FREEZING NOT ANTICIPATING ANY SIGNIFICANT IMPACTS WITH PCPN AS SHOULD END BEFORE TEMPERATURES COOL DOWN. GRADUAL COOLING CONTINUES SUNDAY WITH TEMPERATURES STAYING BLO FREEZING ALL AREAS.
PRECIPITATION ON GOING WITH THE COLD FRONT NEAR TWIN FALLS AT 330Z. SNOW LEVELS HAVE REMAINED HIGH AROUND 3500 FEET WITH THE COLDEST AIR STILL NORTHWEST OF THE REGION WITH UPPER LEVEL TROUGH. THE UPPER TROUGH WILL SLOW MOVE IN OVERNIGHT WITH CONVECTIVE SHOWERS DEVELOPING SATURDAY MORNING. COLD FRONT PASSING THROUGH THE MAGIC VALLEY AT 03Z/SAT. THE COLD FRONT WAS NEAR BURNS WHERE THE WINDS PICKED UP FROM THE WSW 25G35 MPH. ALSO EXPECT DECOUPLED WINDS WITH PARTIAL CLEARING THERE SO PATCHY DENSE /FREEZING/ FOG IS LIKELY. BY SATURDAY AFTERNOON THE UPPER TROUGH WILL BRING AFTERNOON INSTABILITY WITH LIFTED INDICES NEAR ZERO AND UP TO 200 CAPE BUT TEMPS ARE QUITE COLD SURFACE AND ALOFT.
1030 PM PST FRI JAN 29 2016 A strong low pressure area will track through the northeast corner of Washington into extreme north Idaho this evening spreading widespread snow, with most of the significant accumulations occurring over the mountains. The low will also deliver windy conditions to southeast Washington and north central Idaho this evening.
1122 PM EST FRI JAN 29 2016 HIGH PRESSURE WILL MOVE EAST ACROSS THE OHIO VALLEY TONIGHT. A WARM FRONT DEVELOPING OVER THE MISSISSIPPI VALLEY WILL LIFT NORTHEAST ACROSS THE GREAT LAKES ON SATURDAY. LOW PRESSURE WILL CROSS THE CENTRAL GREAT LAKES ON SUNDAY WITH A COLD FRONT DROPPING ACROSS THE AREA SUNDAY NIGHT.
1221 AM EST SAT JAN 30 2016 LOW PRESSURE WILL MOVE EAST OF NOVA SCOTIA TONIGHT FOLLOWED BY HIGHER PRESSURE THROUGH EARLY SATURDAY. A WARM FRONT WILL APPROACH SATURDAY AND CROSS THE REGION SATURDAY NIGHT AND SUNDAY. LIGHT SNOW ACROSS DOWN EAST AREAS WILL GRADUALLY DIMINISH THIS EVENING AS LOW PRESSURE CONTINUES TO MOVE EAST OF NOVA SCOTIA. AN UPPER TROF WILL ALSO CROSS THE REGION THROUGH EARLY EVENING WITH CHANCE OF A FEW SNOW SHOWERS ACROSS NORTHERN AND WESTERN AREAS. SKIES WILL PARTIALLY CLEAR AFTER MIDNIGHT AS SURFACE/UPPER RIDGE BUILD EAST. HIGH PRESSURE WILL CREST OVER THE AREA EARLY SATURDAY AND THEN MOVES EAST SATURDAY AFTERNOON IN ADVANCE OF AN APPROACHING WARM FRONT.
158 AM PDT MON JUN 29 2015 HOT TEMPERATURES WILL RETURN THIS WEEK AS HIGH PRESSURE STRENGTHENS OVER THE GREAT BASIN. MOISTURE WILL REMAIN TRAPPED UNDERNEATH THE RIDGE AND ALLOW FOR AT LEAST A SMALL CHANCE OF THUNDERSTORMS EACH AFTERNOON. LARGE SCALE PATTERN WILL NOT BE CHANGING VERY MUCH OVER THE NEXT FEW DAYS, BUT MINOR SHIFTS WITH THE POSITION OF THE RIDGE ACROSS THE WEST WILL PRODUCE VARYING RESULTS WITH THE WEATHER. GENERALLY, MOISTURE WILL CONTINUE TO STREAM IN ALONG THE WESTERN EDGE OF THE RIDGE INTO THE SIERRA AND WESTERN NEVADA KEEPING PWAT VALUES IN THE 1" RANGE. TEMPERATURES BEGIN TO CLIMB THIS WEEK AS THE RIDGE AXIS MOVES OVER THE SIERRA AND WESTERN NEVADA.
AN UPPER LEVEL LOW APPROACHING FROM THE SOUTHWEST HAS RESULTED IN COOLER OVERNIGHT TEMPERATURES. THE UPPER LOW WILL MOVE OVER NW OREGON THIS AFTERNOON AND MAINTAIN THE POSSIBILITY FOR ISOLATED THUNDERSTORMS OVER THE CASCADES.
TEMPERATURES SHOULD HAVE TIME TO RECOVER INTO THE LOWER 90S PRIOR TO THE ONSET OF SHWRS AND TSTMS WHICH SHOULD REMAIN ISOLD TO WIDELY SCATTERED.
604 AM EDT MON JUN 29 2015 LOW PRESSURE WILL WEAKEN WHILE EXITING THROUGH THE MARITIMES TODAY AND TONIGHT.
523 AM CDT MON JUN 29 2015 AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL PERSIST ACROSS THE INTERMOUNTAIN WEST FOR THE NEXT SEVERAL DAYS STEERING ANY POTENTIAL WEATHER SYSTEMS WELL TO OUR EAST. A RIDGE IN THE WEST AND A TROUGH IN THE EAST HAS NORTHWEST FLOW ACROSS THE FORECAST AREA STARTING OFF THE PERIOD.
403 AM CDT MON JUN 29 2015 THE LATEST WATER VAPOR IMAGERY LOOP SHOWS A HIGHLY AMPLIFIED RIDGE CENTERED OVER NORTHERN ARIZONA WITH THE RIDGE AXIS EXTENDING NORTH ALONG THE BRITISH COLUMBIA/ALBERTA BORDER. AHEAD OF A BACKDOOR COLD FRONT MOVING SOUTH.
659 AM EDT MON JUN 29 2015 LOW PRESSURE WILL DRIFT ACROSS NORTHERN INDIANA TODAY.
312 AM CDT MON JUN 29 2015 LATEST WATER VAPOR SATELLITE IMAGERY SHOWS UPPER LEVEL TROUGH OVER THE EASTERN UNITED STATES AND UPPER LEVEL RIDGE OVER THE WESTERN UNITED STATES INTO THE CANADIAN ROCKIES.
451 AM EDT MON JUN 29 2015 A WEAK LOW PRESSURE SYSTEM AND ASSOCIATED COLD FRONT WILL MOVE INTO THE REGION TODAY INTO TONIGHT. MODELS SUGGEST PCPN SHIELD PIVOTS NORTHEAST INTO NRN OHIO AS A WARM FRONT ADVANCES INTO OUR REGION FROM THE SOUTHWEST. THIS FRONT WILL BE FOLLOWED BY WEAK LOW PRESSURE AND A COLD FRONT. SOME UNCERTAINTY REMAINS ON HOW MUCH ADDITIONAL SHOWERS AND STORMS WILL DEVELOP IN THE WARM SECTOR BETWEEN THE WARM FRONT AND THE SLOWLY MOVING FRONTAL BOUNDARY. GIVEN THE APPROACHING WEAK LOW PRESSURE SYSTEM. A BLEND OF MODELS HAS BEEN USED FOR HIGHS WHICH SHOULD RANGE FROM THE LOWER 70S FAR NORTH TO NEAR 80 ALONG AND SOUTH OF THE OHIO RIVER. WEAK LOW PRESSURE WILL LIFT TO THE NORTHEAST TONIGHT WHILE WEAK FRONTAL BOUNDARY BECOMES ILL-DEFINED.
HIGH PRESSURE WILL REMAIN IN PLACE ACROSS THE REGION THROUGH THE EARLY PART OF THE WEEK. THE HIGH WILL SHIFT WESTWARD AFTER MIDWEEK BRINGING A DRIER NORTHERLY FLOW TO THE AREA.
334 AM EDT MON JUN 29 2015 A WEAK RIDGE OF HIGH PRESSURE WILL BRING FAIR WEATHER AND MILDER TEMPERATURES TO CENTRAL PENNSYLVANIA TODAY.
638 AM EDT MON JUN 29 2015 LOW PRESSURE WILL SLOWLY MOVE AWAY THROUGH THE COURSE OF TODAY RESULTING IN SCATTERED TO ISOLATED SHOWERS DIMINISHING.
MOISTURE HAS BEEN WRAPPED AROUND THE BACK SIDE OF THE HIGH AND WILL BRING SHOWERS AND THUNDERSTORMS TO THE WESTERN GREAT BASIN.
A COLD FRONT WILL WEAKEN TODAY AS IT NUDGES SOUTH TOWARD THE FL/GA BORDER IN THE AFTN. HIGHS TODAY WILL RANGE FROM THE LOWER 90S ACROSS INTERIOR SE GA TO THE MID/UPPER 80S FOR OTHER AREAS.
640 AM EDT MON JUN 29 2015 A COLD FRONT APPROACHES TODAY AND DISSOLVES OVER THE AREA TONIGHT. SHOWERS AND A FEW THUNDERSTORMS WERE ALREADY APPROACHING FROM THE LOWER OHIO VALLEY EARLY THIS MORNING. IN RESPONSE TO THE NEXT LOW PRESSURE SYSTEM AND COLD FRONT. MOISTURE GRADIENT AND H85 TROUGH AXIS WITH 40 KTS FROM THE S AHEAD OF IT AND 30 KTS FROM THE SW BEHIND IT MAY BRING ABOUT AN UPTICK IN COVERAGE AND INTENSITY OF THE CONVECTION APPROACHING THE FCST AREA EARLY THIS MORNING. CONVECTION IS LIKELY TO RAMP UP IN THE AFTERNOON HEATING LATER TODAY AHEAD OF THE APPROACHING COLD FRONT OR LOW LEVEL TROUGH. A SEVERE WEATHER THREAT WOULD ARISE GIVEN SUFFICIENT SPEED AND SOME DIRECTIONAL SHEAR AHEAD OF THE APPROACHING FRONT/TROUGH. WARMER AND MORE HUMID WEATHER IN THE SHORT TERM PERIOD.
117 AM EDT MON JUN 29 2015 A WEAK RIDGE OF HIGH PRESSURE WILL BRING FAIR WEATHER AND MILDER TEMPERATURES TO CENTRAL PENNSYLVANIA TODAY.
THE GREAT BASIN HIGH PRESSURE WILL CONTINUE TO REMAIN STATIONARY OVER THE NEXT 48 HOURS KEEPING EASTERN UTAH AND WESTERN COLORADO IN LIGHT NORTHERLY FLOW.
ATLANTIC HIGH PRESSURE WILL RESIDE ACROSS THE AREA WHILE A TROUGH OF LOW PRESSURE PERSISTS INLAND. BUT IT WILL REMAIN A WARM AND MOIST NIGHT WITH LOWS RANGING FROM THE LOWER 70S INLAND TO THE MID 70S AT THE COAST. A STALLED FRONT ACROSS THE AREA WILL DISSIPATE THROUGH THE DAY ALLOWING ATLANTIC HIGH PRESSURE TO RETURN.
WITH INITIAL DEVELOPMENT ACROSS THE HIGHER TERRAIN THEN MOVING SLOWLY WEST INTO THE VALLEYS OF YAVAPAI AND NORTHERN GILA COUNTIES. WITH ONLY GRADUAL AND MODEST SHIFTS IN THE MONSOONAL FLOW AND ASSOCIATED HIGH PRESSURE. DEVELOPING ALONG THE HIGH TERRAIN FIRST AND EXPANDING TO THE VALLEYS.
CLOUD COVER AND RAIN COOLED AIR SHOULD LIMIT HIGHS TO THE UPPER 80S NORTH OF ORLANDO/INTERSTATE 4 AND THE LOWER 90S TO THE SOUTH. AXIS OF THE SUBTROPICAL RIDGE WL REMAIN SOUTH OF THE FORECAST AREA WITH DEEP LAYER WLY COMPONENT FLOW. THE AXIS OF THE SUBTROPICAL RIDGE IS SHOWN BY GFS DRIFTING NWD TO A POSITION NR CENTRAL FL BY THU. THE RIDGE AXIS BECOMING SITUATED S OF THE AREA THROUGH MIDWEEK WL PROVIDE FAVORABLE MARINE CONDS DUE TO WLY COMPONENT WITH A LIMITED SEABREEZE POTENTIAL.
407 AM EDT MON JUN 29 2015 AS LOW PRESSURE MOVES INTO THE CANADIAN MARITIMES TODAY AND TONIGHT. HIGH PRESSURE WILL BUILD INTO THE NORTHEAST.
326 AM CDT MON JUN 29 2015 WEAK COLD FRONT CURRENTLY MOVING INTO FAR NORTHEAST OKLAHOMA THIS MORNING WITH SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING AHEAD OF FRONT ACROSS CENTRAL OKLAHOMA IN RESPONSE TO WEAK UPPER LEVEL IMPULSE.
TYPICAL SUMMER TIME PATTERN IS THEN EXPECTED FOR THE REST OF THE WEEK WITH HIGH PRESSURE OFFSHORE AND A TROUGH OF LOW PRESSURE TO THE WEST.
AN UPPER LEVEL LOW CONTINUES TO SLIDE NORTH-NORTHEAST INTO COASTAL OREGON THIS MORNING AS RIDGING RE-ESTABLISHES ITSELF OVER NORTHWEST CALIFORNIA.
UPPER LEVEL TROF AXIS STILL OVER EASTERN ILX THIS MORNING AND WILL KEEP CENTRAL ILLINOIS IN NWRLY FLOW/SLIGHTLY CYCLONIC FLOW ALOFT. TEMPERATURES STILL A BIT BELOW NORMAL TODAY, WITH THE COOLEST TEMPS IN THE NE, CLOSER TO THE UPPER LEVEL TROF AND COOLER MID LEVELS.
THE WEAK WESTERN EXTENT OF THE ATLANTIC'S SUBTROPICAL RIDGE REACHES ACROSS THE FLORIDA KEYS AND THE GULF OF MEXICO.
448 AM EDT MON JUN 29 2015 LOW PRESSURE WILL DRIFT ACROSS NORTHERN INDIANA TODAY.
302 AM PDT MON JUN 29 2015 UPPER-LEVEL HIGH PRESSURE WILL REMAIN IN PLACE OVER THE GREAT BASIN FOR MUCH OF THE WEEK. THE SYNOPTIC PATTERN WILL REMAIN FAIRLY STATIC FOR THE SHORT TERM WITH A LARGE UPPER HIGH OVER UTAH AND A WEAK UPPER LOW TO THE SW OF SRN CA. THE UPPER HIGH SHIFTS AND EXPANDS A LITTLE OVER THE NEXT 72 HOURS AND AS A RESULT THE UPPER FLOW SHIFTS FROM THE SSE TO THE SE.
341 AM CDT MON JUN 29 2015 TODAY-TONIGHT: RELATIVELY QUIET WEATHER ANTICIPATED AS RIDGE AXIS MOVES ACROSS AREA TONIGHT. WITH RECENT MAXIMUM TEMPERATURES TRENDING TO WARMER GUIDANCE. TRENDED TOWARD COOLER GUIDANCE. WITH WESTERN US RIDGE MOVING LITTLE.
635 AM EDT MON JUN 29 2015 LOW PRESSURE WILL GRADUALLY EXIT INTO THE MARITIMES TODAY.
A FEW CLUSTERS OF CONVECTION NOTED OVER THE HIGH PLAINS. HIGH TEMPERATURES SHOULD MIX TO A FEW DEGREES COOLER THAN YESTERDAY. AND DEWPOINTS IN THE LOW 60S SHOULD ALSO HELP MAKE FOR A MORE COMFORTABLE DAY. THINK THAT LOWS WILL HAVE A CHANCE TO DROP INTO THE LOWER 60S IN THE OVERNIGHT HOURS BEFORE SURFACE WINDS SWING BACK AROUND TO THE SOUTHWEST AND WAA STARTS TO MOVE TEMPERATURES HIGHER FOR THE COMING DAYS. FORECAST REMAINS DRY AS CONVECTION REMAINS WEST OF THE AREA OVER THE HIGH PLAINS.
Very warm temperatures of 10-15 degrees above average can be expected this week as high pressure remains the dominant weather feature.
245 AM MDT MON JUN 29 2015 NORTHERLY FLOW WILL CONTINUE ACROSS THE PLAINS EAST OF THE ROCKIES AS A RIDGE PERSISTS OVER CENTRAL UTAH.