Aikyam-Lab/Synoptic-Bench huggingface dataset:
UNTIL A WEAK MID LEVEL TROUGH MOVES THROUGH THE REGION THURSDAY MORNING. THIS TROUGH. MODEL GUIDANCE HAS BACKED OFF A LITTLE ON THE LOW LEVEL MOISTURE. ALONG WITH A MID-LEVEL RIDGE AXIS.
1003 PM EDT WED APR 15 2015 A WEAK LOW PRESSURE SYSTEM WILL LIFT FROM THE MID MISSISSIPPI VALLEY INTO THE LOWER GREAT LAKES TONIGHT INTO THURSDAY.
A WAVE ROTATING AROUND THE EAST SIDE OF THE LOW IS PRODUCING SHOWERS AND CLOUDINESS ACROSS THE LOWER MISSOURI VALLEY. RIDGE AND THE VERY DRY AIR IN PLACE OVER ILLINOIS PROGRESS INTO THE FORECAST AREA IS SLOW.
WITH THE HIGHEST RAIN CHANCES REMAINING INLAND IN THE LATER AFTERNOON HOURS.
FARTHER WEST SKIES CLEAR VCNTY TROUGH AND HIGH RES MODELS NOT INDICATING ANY SHRA SO DELAYED AND TRIMMED BACK ON VERY LOW POPS. THE UPPER LOW CUTTING OFF OVER THE FOUR CORNERS REGION WILL CONTINUE TO ROTATE OVER THAT AREA THROUGHOUT THE PERIOD. WINDS WILL BEGIN TO GO DOWN AS THE TROUGH AXIS APPROACHES AND WE START TO LOSE MIXING. WE SHOULD BE A BIT COOLER WITH WEAK COLD AIR ADVECTION BUT STILL ABOVE SEASONAL AVERAGES WITH TEMPS TOPPING OUT IN THE 60S. TEMPS SHOULD BE A BIT COOLER WITH LOWS IN THE UPPER 30S TO LOW 40S.
1047 PM EDT WED APR 15 2015 HIGH PRESSURE WILL BE IN CHARGE OVERNIGHT WITH A MAINLY CLEAR SKY.
MIDAFTERNOON GOES WATER VAPOR IMAGERY SHOWED A DEEP CLOSED UPPER LOW CENTERED OVER UTAH. A WEAK MIDLEVEL TROF OVER THE SOUTHERN PLAINS WILL LIFT EAST OVERNIGHT. WITH A SCATTERED SHOWERS AND THUNDERSTORMS POSSIBLE AHEAD OF A NORTHWARD ADVANCING MARINE SURFACE WARM FRONT.
1102 PM EDT WED APR 15 2015 HIGH PRESSURE NEAR OTTAWA ONTARIO WILL DRIFT SOUTHEAST OVERNIGHT PROVIDING LIGHT WIND AND COOL DRY CONDITIONS. THIS HIGH WILL DRIFT OFF THE SOUTHERN NEW ENGLAND COAST THURSDAY GIVING US FAIR WEATHER FOR MUCH OF THE DAY.
BEFORE CLOUDS THICKEN AHEAD OF A COLD FRONT. THIS COLD FRONT WILL BRING RAIN SHOWERS TO THE REGION THURSDAY NIGHT.
A WARM FRONT OVER BRITISH COLUMBIA WILL BRING CLOUDS TO THE NORTH PART TONIGHT. THE RIDGE WILL BUILD NORTHWARD THURSDAY. BRINGING WARMER WEATHER AND MORE SUNSHINE.
A TELECONNECTED RIDGE FORMS/MOVES IN AND GIVES A DRY START TO THURSDAY. IT'S IN RESPONSE TO THE DIGGING TROF OF LOW PRESSURE CROSS THE ROCKIES AND HEADING INTO THE PLAINS STATES.
809 PM EDT WED APR 15 2015 HIGH PRESSURE WILL CROSS THE REGION OVERNIGHT THEN MOVE SOUTH THURSDAY.
THE UPPER LOW WILL BEGIN TO STALL AROUND THE FOUR CORNERS REGION.
/ISSUED 323 PM CDT WED APR 15 2015/ SLOW MOVING UPPER LOW THAT BROUGHT RECENT WIDESPREAD RAIN / CLOUDS IS LIFTING AWAY FROM THE REGION WHILE THE NEXT CLOSED LOW IS CURRENTLY DROPPING SOUTHWARD THROUGH THE INTER- MOUNTAIN WEST.
LOW PRESSURE IN THE UPPER LEVELS WITH A WEAK REFLECTION AS THE SURFACE WILL MOVE SLOWLY THROUGH THE CENTRAL U. HIGH PRESSURE WILL CONTINUE TO FEED DRY LOW LEVEL AIR INTO THE STATE OVER THE NEXT TWO DAYS.
CHATTANOOGA AIRPORT, TN 59 71 56 77 / 30 60 30 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 54 69 56 77 / 30 50 20 20 OAK RIDGE, TN 56 70 57 77 / 40 50 20 20 TRI CITIES AIRPORT, TN 48 66 50 75 / 40 60 20 20.
913 PM EDT WED APR 15 2015 HIGH PRESSURE NEAR OTTAWA ONTARIO WILL DRIFT SOUTHEAST OVERNIGHT PROVIDING LIGHT WIND AND COOL DRY CONDITIONS. THIS HIGH WILL DRIFT OFF THE SOUTHERN NEW ENGLAND COAST THURSDAY GIVING US FAIR WEATHER FOR MUCH OF THE DAY.
DEVELOPING WEAK LOW PRESSURE OFF OF THE NORTH FLORIDA COAST WILL PRODUCE A WEDGE OF N/NE FLOW OVERSPREADING THE NORTH AND CENTRAL WATERS.
SKIES HAVE CLEARED ACROSS MOST OF THE AREA AS THE UPPER TROF THAT BROUGHT THE RAIN AND SNOW OF YESTERDAY AND THIS MORNING HAS MOVED TO THE EAST. 00Z SOUNDING SHOWS THE LOWER ATMOSPHERE HAS DRIED CONSIDERABLY AND CONFIDENCE FOR WIDESPREAD FOG FORMATION IS WANING. DENSE FREEZING FOG IS POSSIBLE AT KBZN FOR A FEW HOURS NEAR SUNRISE. UPPER LOW SLOWLY DIGS FROM SOUTHWEST WYOMING INTO THE FOUR CORNERS REGION BY THURSDAY AFTERNOON. MEANWHILE A POSITIVE TILT UPPER LEVEL RIDGE LEANS INTO MONTANA FROM THE WEST BRINGING DRIER AIR ALONG WITH IT.
HOWEVER THE AIR MASS OVERHEAD WILL BE SLIGHTLY WARMER, SO READINGS SHOULD NOT BE AS LOW AS THEY WERE THIS MORNING. MEANWHILE PARTS OF THE SHASTA VALLEY WILL HAVE A BETTER CHANCE TO GET NEAR OR BELOW FREEZING AND HAVE ISSUED A FREEZE WARNING.
WITH THE HIGHEST AMOUNTS ACROSS LOWER ACADIANA. /ISSUED 335 PM CDT WED APR 15 2015/ MID-AFTERNOON SFC ANALYSIS SHOWS A WEAKENING FRONTAL BOUNDARY LYING OVER THE ATCHAFALAYA BASIN WITH HIGH PRESSURE SITUATED BEHIND IT OVER ERN TX. ROUNDS OF ELEVATED POPS LINGER INTO THE WEEKEND AS ADDITIONAL DISTURBANCES ROUNDING THE LOW CROSS THE NWRN GULF AND USHER IN SUFFICIENT LIFT TO AN ALREADY SOGGY FORECAST AREA. ADDITIONALLY SOME WEAK COASTAL TROFFING IS NOTED AS WELL. RELIEF FINALLY COMES LATE IN THE WEEKEND AS THE LOW OPENS AND EJECTS NEWD ACROSS THE PLAINS STATES.
815 PM EDT WED APR 15 2015 HIGH PRESSURE WILL MOVE OFF TO THE EAST AS LOW PRESSURE MOVES INTO THE MIDWEST TONIGHT AND THURSDAY. WITH HIGHS THURSDAY IN THE LOW TO MID 60S. VERY DRY ATMOSPHERE IN PLACE ASSOCIATED WITH RETREATING HIGH PRESSURE RIDGE OVER GREAT LAKES REGION. THIS SOUTHERN MOISTURE SHOULD WORK NORTHWARD TONIGHT AS RIDGE CONTINUES TO MOVE EAST WHILE SHORT WAVE TROUGH APPROACHES WITH THETA E MOISTURE SURGE. ONCE THIS MOISTURE SURGE AND TROUGH PASS THURSDAY MORNING. THERE IS A SECONDARY WEAK TROUGH WHICH PASSES IN AFTERNOON AND THIS COULD SPARK A FEW SHOWERS OR EVEN ISOLATED TSRA IN THE SOUTH/SOUTHEAST WITH SOME WEAK INSTABILITY. SIDED TOWARD A BLEND BUT ON COOLER SIDE NORTHEAST WHERE CLOUDS/MOISTURE WILL BE LATER TO ARRIVE.
1205 AM EDT THU APR 16 2015 AVIATION HIGH PRESSURE OVER NEW ENGLAND WILL RESULT IN A SOUTHERLY FLOW OF MILD AIR HERE IN THE GREAT LAKES REGION TONIGHT AND THURSDAY. A WEAK WAVE OF LOW PRESSURE WILL TRACK IN FROM THE SOUTH OVERNIGHT RESULTING IN SOME SHOWERS AND EVEN A THUNDERSTORM INTO THURSDAY.
931 PM PDT Wed Apr 15 2015 High pressure builds over NorCal behind a low pressure system moving eastward across the Great Basin. Low pressure area over the four corners area with high pressure building over the west coast this evening. Temperatures will be on the rise with highs warming into the low to mid 80s over the north end of the valley to the lower 80s to the south.
BELIEVE THAT WITH BUILDING UPPER LEVEL RIDGING INFLUENCES AND DRY AIR ENTERTAINMENT. BUILDING UPPER LEVEL RIDGING INFLUENCES MIGHT HINDER SHWR/TSTM DEVELOPMENT 16/18Z-17/06Z. THERE COULD BE SOME ISOLATED TO SCATTERED EVENING SHOWERS AND PERHAPS A THUNDERSTORM OR TWO BUT SHORT WAVE'S GOT TO GET CLOSER AND WE NEED TO DESTABILIZE WHICH WE WILL SOUTH OF WARM FRONT LATER TONIGHT. S UPPER LOW IN PLACE ON THURSDAY WITH A SERIES OF SHORT WAVES EJECTING OVER THE NEXT SEVERAL DAYS BEFORE SOUTHWESTERN U. S UPPER LOW FINALLY PHASES WITH BUCKLING NORTHERN STREAM WITH A BROAD UPPER TROUGH RESULTING OVER THE EASTERN HALF OF THE U.
UPPER AIR ANALYSIS THIS MORNING SHOWED A LOW OVER THE GREAT BASIN WITH THE TROUGH ASSOCIATED WITH IT BROADENED ACROSS THE SOUTHWEST. THE UPPER LOW IS EXPECTED TO DROP TO THE SOUTH BEFORE EJECTING TO THE EAST.
TIGHTENING GRADIENT AROUND A RIDGE OFF THE EASTERN SEABOARD BEGINS TO INCREASE NORTH WINDS IN THE EARLY MORNING HOURS TO 10 TO 15 KNOTS FOR OUR NORTHERN MOST WATERS.
1027 PM EDT WED APR 15 2015 HIGH PRESSURE WILL CROSS THE REGION OVERNIGHT THEN MOVE SOUTH THURSDAY.
Lows tonight will fall into the low to mid 50s. An upper low digs into the Great Basin, popping short term ridging over southern Missouri. Southerly winds will commence tomorrow night as the upper level low shifts closer to the region.
WINDS WILL GRADUALLY DIMINISH TONIGHT AND THURSDAY AS HIGH PRESSURE BUILDS IN FROM THE SOUTHWEST. NOTICEABLY WARMER THURSDAY AS HIGHS REBOUND BACK TO NEAR NORMAL LEVELS.
1052 PM EDT WED APR 15 2015 UPPER TROUGH AXIS MOVES IN FROM THE SOUTHWEST TONIGHT AND THURSDAY.
STRONG HIGH PRESSURE WILL BUILD ACROSS THE MID ATLANTIC STATES AND INTO THE CAROLINAS.
/ISSUED 543 PM CDT WED APR 15 2015/ SFC RIDGING WILL MOVE EAST OF OUR TERMINAL LOCATIONS TONIGHT RESULTING IN A RETURN TO BOUNDARY LAYER/LOW LEVEL MOISTURE LATE TONIGHT AND THROUGH THE DAY THURSDAY. MOISTURE RETURNING MORE SLOWLY THURSDAY AS UPPER LOW STILL DIGGING OVER EASTERN ROCKIES.
A HIGH PRESSURE RIDGE WAS POSITIONED ACROSS THE MID ATLANTIC REGION WITH A WEDGE EXTENDING SOUTHWEST INTO CENTRAL/NRN GA. TEMPERATURES AT 19Z WERE RUNNING IN THE LOWER TO MIDDLE 70S WITH DEWPOINTS GENERALLY IN THE LOWER 60S. THE SHORT RANGE HIGH RES WINDOWS SHOW POTENTIAL INITIATION ALONG TWO FRONTS (PUN SEMI- INTENDED) LATER THIS EVENING/OVERNIGHT AS CONVERGENCE INCREASES ACROSS NE AL/NW GA ALONG APPROACHING WEDGE FRONT AND ASCENT INCREASES ACROSS NRN MS/NW AL AHEAD OF S/W TROUGH.
925 AM PDT FRI OCT 23 2015 HIGH PRESSURE WILL MOVE IN LATE IN THE AFTERNOON WITH A SHIFT TO LIGHT OFFSHORE WINDS AND CLEARING SKIES.
UPPER RIDGE REMAINS IN PLACE BUT DOES GET FLATTENED AND NUDGED EASTWARD THROUGH THE PERIOD.
1200 PM EDT FRI OCT 23 2015 A COLD FRONT PUSHES SOUTH THROUGH THE REGION TODAY. HIGH PRESSURE BUILDS BACK OVER THE AREA TONIGHT AND SATURDAY.
1257 PM EDT FRI OCT 23 2015 HIGH PRESSURE WILL BUILD IN FROM THE WEST TODAY AND TONIGHT AND CREST OVER THE AREA SATURDAY MORNING.
As the wave currently across the Central Rockies lifts northeastward today the associated cold front will sweep into the Plains and move into NE OK late tonight.
950 AM EDT FRI OCT 23 2015 COOLER AIR MOVES IN ON GUSTY NORTHWEST WINDS TODAY. AS HIGH PRESSURE MOVES IN FROM THE WEST. THE HIGH WILL MOVE ACROSS THE REGION FRI NIGHT INTO SATURDAY.
CHATTANOOGA AIRPORT, TN 79 56 77 60 / 0 0 20 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 77 52 75 59 / 0 0 10 30 OAK RIDGE, TN 77 51 73 59 / 0 0 20 40 TRI CITIES AIRPORT, TN 78 48 73 56 / 0 0 10 40.
1153 AM EDT FRI OCT 23 2015 A DRY COLD FRONT WILL CROSS THE REGION TODAY. FOLLOWED BY HIGH PRESSURE FROM THE NORTH OVER THE WEEKEND.
A STRONGER COLD FRONT WILL START PUSHING INTO WESTERN ARKANSAS. WITH MORE CLOUDS AND RAIN AROUND TEMPERATURES WILL BE COOLER WITH HIGHS SATURDAY AFTERNOON MAINLY IN THE 70S.
1047 AM CDT FRI OCT 23 2015 Minor tweaks to POPS for the afternoon as most rain/thunder will stay south of I-40 as best forcing remains in the vicinity of the warm front across TX. Cold front to move into the region tonight.
AN EXPANSIVE AREA OF HIGH PRESSURE STRETCHES FROM EASTERN CANADA. NORTHEAST TO EAST WINDS OF 10 TO 15 MPH WITH HIGH TEMPERATURES EXPECTED TO REACH INTO THE LOWER AND MID 80S CAN BE EXPECTED ALONG THE ISLAND CHAIN.
Periods of heavy rain with flash flooding possible through Currently, a strong upper level low is lifting to the northeast from western NE into western SD. Strengthening southwest flow is in place to the south of this low across Texas.
WILL KEEP SOME POPS IN THROUGH THE AFTERNOON AS THE BAND CURRENTLY OVER WESTERN SOUTH DAKOTA MAY SWEEP ACROSS THE CWA AS THE LOW CONTINUES TO TREK EASTWARD. BROAD LOW PRESSURE SYSTEM CONTINUES TO MOVE ACROSS THE CWA THIS AM. A RIDGE SETTLES OVERHEAD TONIGHT.
Despite the cloud cover and rain expected today, temperatures will still climb into the lower 70s from the warm air and moisture advection ongoing this morning and which should last through most of today. Models differ slightly on the end of the rainfall but in general, the rain will be south of I-44 by sunrise as the cold front will progress through the area through Saturday morning. The front will have moved through all of the area by mid day Saturday with clearing occurring slowly behind the front as a cooler more fall like air mass slided into the Ozarks.
A SIGNIFICANT STORM SYSTEM CONTINUES TO BECOME MORE LIKELY WX MAP SHOWS CONTINUED MODERATE PRESSURE GRADIENT OVER THE GULF AS OUR REGION IS SANDWICHED BETWEEN HIGH PRESSURE OVER THE EASTERN U. AND A BROAD LOW PRESSURE TROF OVER THE RIO GRAND VALLEY. ALL MODELS ARE NOW DEVELOPING A NON TROPICAL EXTRATROPICAL LOW OFF THE LOWER TX COAST. AND SLOWLY TRACKS THE LOW NE TOWARDS THE SE TX/LA COAST BY SUN/MON. THIS WILL BE A CONTINUING EVOLVING FORECAST AS IT WILL DEPEND ON THE EXACT TRACK OF THE REMNANTS OF THIS STORM AND ITS INTERACTION WITH THE APPROACHING UPPER LEVEL TROF. THE GFS LIFTS THE LOW OUT BY TUE.
This activity was associated with temperature and moisture advection on the nose of a 30-40 kt southerly low level jet ahead of an approaching upper level trough, low over the northern Plains. Temperatures will be a little cooler than yesterday due to the cloud cover and precipitation, but still above normal with southerly low level flow.
THE LOW LEVEL EAST TO NORTHEAST FLOW WILL CONTINUE TO BRING ATLANTIC MOISTURE WESTWARD UNDER THE SUBSIDENCE INVERSION LEADING TO VARYING AMOUNTS OF CUMULUS AND ALTOCUMULUS WITH A FEW SPRINKLES/LIGHT SHOWERS POSSIBLE MAINLY ACROSS THE SOUTHERN ZONES THIS AFTERNOON.
1008 AM EDT FRI OCT 23 2015 WATER VAPOR IMAGERY AND MORNING SOUNDING REVEAL A RATHER WARM AND VERY DRY MID-LEVEL ATMOSPHERE WITH APPRECIABLE SUBSIDENCE COURTESY OF UPPER RIDGING. THUS STORY OF THE DAY REMAINS IN THE LOW-LEVELS WITH PERSISTENT ONSHORE MARITIME FLOW. MAX TEMPS IN THE LOW-MID 80S.
HIGH PRESSURE IS STILL HOLDING FIRM OVER THE NE TN THIS MORNING. STRONG RIDGING EXTENDS WEST SOUTHWEST INTO ALABAMA. MESOSCALE MODELS SEEM TO BUILD THE HIGH FURTHER WEST OVER CENTRAL AND NORTHERN ALABAMA AS THE DAY PROGRESSES. HIGH TEMPERATURES WERE RAISED A DEGREE OR TWO INTO THE LOWER 80S IN MOST LOCATIONS.
LOW PRESSURE EXTENDS FROM NW NEBRASKA DOWN INTO SE CO WITH RETURN FLOW IN PLACE ACROSS ALL OF THE PLAINS. THE BETTER MID LEVEL THETA-E ADVECTION AHEAD OF THE UPPER TROUGH IS NOW PUSHING INTO MO WHICH IS ALSO WHERE THE BETTER SHOWER/STORM CHANCES ARE EXPECTED TO SHIFT. SOME SHOWERS MAY LINGER OVER FAR SE KS THIS EVENING BEFORE THE MID LEVEL TROUGH FINALLY SWINGS THROUGH. THIS TROUGH WILL BRING RAIN CHANCES BACK INTO THE FORECAST FOR TUE-WED. SOME COOLER AIR WILL FILTER-IN FOR THE END OF THE WEEK AS THIS WAVE DEPARTS TO THE EAST. TURNING WEST/NORTHWESTERLY IN WAKE OF A COLD FRONT THIS EVENING. ALONG THE ADVANCING COLD FRONT.
626 AM CDT FRI OCT 23 2015 THE COMBINATION OF THE UPPER LOW ACROSS WRN NEB AND A PACIFIC COLD FRONT MOVING EAST IN THE SAME AREA HAS UNEXPECTEDLY SPAWNED A COMPLEX OF SHOWERS AND ISOLATED THUNDERSTORMS. ALSO ASSOCIATED WITH THE UPPER LEVEL LOW AS IT MOVES INTO THE NRN PLAINS. PACIFIC HIGH PRESSURE SHOULD BE LOCATED ACROSS WRN NEB WITH CLEAR SKIES. DRY CONDITIONS ARE FORECAST THIS WEEKEND AND INTO THE COMING WORK WEEK AS UPPER RIDGING AMPLIFIES OVER THE INTER-MOUNTAIN WEST AND BUILDS EAST TOWARD THE HIGH PLAINS. TO SLIGHTLY NORTHWEST FLOW DEVELOPS IN ADVANCE OF THE UPPER RIDGING.
642 AM CDT FRI OCT 23 2015 BROAD LOW PRESSURE SYSTEM CONTINUES TO MOVE ACROSS THE CWA THIS AM. A RIDGE SETTLES OVERHEAD TONIGHT.
HIGH PRESSURE ALOFT WILL PREVAIL THROUGH SATURDAY.
FAIR AND WARMER CONDITIONS ARE EXPECTED OVER THE WEEKEND.
625 AM CDT FRI OCT 23 2015 UPPER LEVEL LOW PRESENTLY SITUATED OVER THE WESTERN PORTIONS OF SOUTH DAKOTA AND NEBRASKA VERY EARLY THIS MORNING. THOUGH A LITTLE WARMER THROUGH THE LOWER MO RIVER VALLEY WHERE HIGHS WILL REACH THE MID 60S. WITH COOLEST READINGS IN THE EAST WHERE THE RIDGE AXIS LINGERS LONGEST.
It has been very difficult finding the cause of this narrow band of convection, but the HRRR indicates there is a weak trough in this area. A secondary upper level trough will drop into New Mexico Saturday bringing a cold front south into Central Texas. This upper trough will be positively tilted keeping the highest rain chances in the eastern Permian Basin Friday. Northeast winds behind the surface front will be enhanced by an area of low pressure that will develop along the Texas coast, enhancing cold air advection. Guidance has been consistent in dropping high temperatures on Saturday and have followed suit with highs in many locations only reaching the lower 60s.
1007 mb elongated low pressure was over central SD/NE with a warm front lifting ne across sw IL. Moisture channel imagery shows upper low in western NE and the models pretty consistent in bringing it to the east into southwest MN/northwest IA by evening. Moisture advection in difluent zone ahead of the low had brings significant rain from MO into IL this morning.
STRATUS/FOG WILL SHIFT EAST AND DISSIPATE BY EARLY THIS AFTERNOON AS THE LOW LEVEL FLOW VEERS. THE SECONDARY MID TO UPPER TROUGH WILL MOVE NEAR WEST TX WHILE A COLD FRONT DIVES SOUTH INTO OK AND TX. THE FRONT WILL CLEAR MOST OF OUR COUNTIES BY EARLY SAT AFTERNOON AND ANY SIGNFICANT RAIN WILL REMAIN CONFINED TO S/SE OK THROUGH SUN AM AS THE SECOND TROUGH MOVES INTO CENTRAL TX. THE THIRD MID TO UPPER TROUGH WILL MOVE OUT OF THE ROCKIES MID DAY TUES. ANOTHER COLD FRONT WILL FOLLOW DROPPING HIGH TEMPS INTO THE MID TO LOW 60S BY THURS.
1027 AM EDT FRI OCT 23 2015 THIS AFTERNOON, HIGH PRESSURE WILL BRING MOSTLY SUNNY SKIES AND COOLER TEMPERATURES.
932 AM PDT FRI OCT 23 2015 FAIR AND WARMER WEATHER IS EXPECTED TODAY AND SATURDAY UNDER HIGHER PRESSURE ALOFT AND WEAK OFFSHORE FLOW AT THE SURFACE.
833 AM EDT FRI OCT 23 2015 HIGH PRESSURE WILL BUILD IN FROM THE WEST TODAY AND TONIGHT AND CREST OVER THE AREA SATURDAY MORNING.
UPPER LOW NEAR NEBRASKA PANHANDLE OVERNIGHT IS SLOWLY LIFTING NORTHEAST AS EXPECTED. UPPER LOW OPENS UP AND WEAKENS TODAY AS IT TRACKS THROUGH SOUTH DAKOTA.
WATER VAPOR LOOP INDICATED AN UPPER LEVEL LOW PRESSURE SYSTEM OVER THE NE PANHANDLE. UPPER LOW WILL MOVE ACROSS THE FORECAST AREA THIS AFTERNOON. WATER VAPOR LOOP ALSO INDICATED AN UPPER LEVEL TROUGH FROM WESTERN MT INTO WESTERN SASK. MT TROUGH WILL MOVE INTO THE FORECAST AREA BY THIS AFTERNOON. UPPER AIR PATTERN AMPLIFIES A BIT OVER CENTRAL CANADA AND NORTHERN PLAINS AS COOLER AIR MOVES INTO THE AREA LATE SAT. AN UPPER LEVEL RIDGE WILL MOVE INTO THE WESTERN DAKOTAS BY 84 HOURS.
958 AM EDT FRI OCT 23 2015 DRY AND SUNNY THIS AFTERNOON UNDER HIGH PRESSURE. CLOUDS WILL INCREASE TONIGHT FOLLOWED BY INCREASING RAIN CHANCES ON SATURDAY AS ANOTHER COLD FRONT APPROACHES. SUNNY WITH HIGH TEMPERATURES SLIGHTLY ABOVE NORMAL CAN BE EXPECTED TODAY AS HIGH PRESSURE TRANSITIONS ACROSS THE REGION.
432 AM PDT FRI OCT 23 2015 High pressure will slowly build over the Inland Northwest today and remain over the region through much of the weekend.
718 AM EDT FRI OCT 23 2015 A COLD FRONT WILL CROSS THE REGION TODAY. FOLLOWED BY HIGH PRESSURE FROM THE NORTH OVER THE WEEKEND.
A COLD FRONT WILL PUSH EAST INTO THE AREA THROUGH THE DAY ON SATURDAY.
645 AM CDT FRI OCT 23 2015 AN AREA OF LOW PRESSURE SITUATED ACROSS WESTERN NEBRASKA AT THE BEGINNING OF THE PERIOD CONTINUES TO MAKE ITS WAY NORTHEAST THROUGH THE REGION. SHOWERS ARE EXPECTED TO FINALLY CLEAR THE AREA FRIDAY NIGHT AS THE LOW EXITS THE REGION. TEMPERATURES SHOULD BE ABLE TO CLIMB INTO THE MID 60S IN NORTHEAST NEBRASKA AND POSSIBLY THE LOW 70S ACROSS SOUTHEAST PORTIONS OF THE CWA. SLIGHTLY COOLER TEMPERATURES AND DRY CONDITIONS WILL BE IN PLACE THROUGH THE WEEKEND.
THOUGH ADDITIONAL AMOUNTS ARE EXPECTED TO BE ON THE LOW SIDE. THE MODELS DEVELOP THE STORM SYSTEM SUCH THAT THE UPPER LEVEL LOW BECOMES AN OPEN WAVE AS IT LIFTS NORTHEASTWARD INTO THE RED RIVER VALLEY BY THIS EVENING. DRY HIGH PRESSURE MOVES IN BEHIND THE LOW FROM THE WEST. THIS WILL ALLOW RADIATIONAL COOLING AND LOWS FRIDAY NIGHT SHOULD BE IN THE UPPER 20S SOUTHWEST TO THE LOW AND MID 30S ELSEWHERE.
THE UPPER RIDGE WILL REMAIN IN PLACE ACROSS THE EASTERN STATES THROUGH TONIGHT. THESE CLOUDS WILL NOT AFFECT THE FORECAST THOUGH AS HIGHS WILL AGAIN CLIMB INTO THE LOW TO MID 80S. LOWS TEMPS TONIGHT WILL FALL INTO THE LOW 60S INLAND TO UPPER 60S ALONG THE COAST.
1056 AM MDT FRI OCT 23 2015 CURRENT SURFACE ANALYSIS SHOWS LOW PRESSURE OVER SOUTH CENTRAL SD. UPPER LEVEL ANALYSIS SHOWS TROF OVER THE DAKOTAS AND NEB. OTHER SHOWERS NEAR THE LOW ARE CLIPPING PORTIONS OF SOUTH CENTRAL SD. HIGHS WILL MOSTLY BE IN THE LOW TO MID 50S. WITH 40S OVER THE HIGHER BLACK HILLS. A COLD FRONT WILL PUSH ACROSS THE AREA TODAY BRINGING GUSTY NW WINDS.
930 AM EDT FRI OCT 23 2015 A DRY COLD FRONT WILL CROSS THE REGION TODAY. FOLLOWED BY HIGH PRESSURE FROM THE NORTH OVER THE WEEKEND.
1227 PM EDT FRI OCT 23 2015 HIGH PRESSURE WILL REMAIN IN CONTROL THROUGH THE WEEKEND.
THE MODELS DEVELOP THE STORM SYSTEM SUCH THAT THE UPPER LEVEL LOW BECOMES AN OPEN WAVE AS IT LIFTS NORTHEASTWARD INTO THE RED RIVER VALLEY BY THIS EVENING. DRY HIGH PRESSURE MOVES IN BEHIND THE LOW FROM THE WEST. THIS WILL ALLOW RADIATIONAL COOLING AND LOWS FRIDAY NIGHT SHOULD BE IN THE UPPER 20S SOUTHWEST TO THE LOW AND MID 30S ELSEWHERE.
654 AM CDT FRI OCT 23 2015 MAIN CONCERNS IN THE SHORT TERM ARE CENTERED AROUND THE WIDESPREAD RAINFALL EXPECTED TODAY AS AN AREA OF LOW PRESSURE MOVES THROUGH THE UPPER MIDWEST. DEEP UPPER TROUGH OVER THE CENTRAL PLAINS THIS MORNING WILL LIFT TO THE NE TODAY AND PHASE WITH A MUCH BROADER LONG-WAVE TROUGH OVER NRN CANADA. PLENTY OF DEEP LAYER MOISTURE COMBINED WITH LARGE-SCALE LIFT FROM THE UPPER WAVE AND THE PASSAGE OF THE SURFACE COLD FRONT WILL ALL AID IN THE DEVELOPMENT AND SUSTAINABILITY OF RAIN SHOWERS DURING THE NEXT 18 TO 24 HOURS. BUT DIMINISH IN INTENSITY AND COVERAGE THROUGH THE DAY AS HIGH PRESSURE BUILDS IN FROM THE WEST. AS THE HIGH BUILDS IN. INTO THE LOWER 40S.
TODAY AND TONIGHT UPPER LEVEL RIDGE AXIS WILL SHIFT EASTWARD ACROSS THE AREA TODAY. WITH THE LOW LEVEL RIDGE AXIS EXTENDING SOUTHWESTWARD ACROSS THE NORTHERN GULF COAST AND MAINTAINING AN EASTERLY COMPONENT TO THE WIND FIELDS. AS A MIDLEVEL TROUGH CROSSES THE NORTHERN PLAINS. A WEAK IMPULSE ROTATING THROUGH THE DEAMPLIFYING RIDGE OVER THE SOUTHEASTERN CONUS WILL PROVIDE ENOUGH LIFT FOR A FEW LIGHT SHOWERS ACROSS FAR NORTHWEST CENTRAL ALABAMA.
A MID LEVEL RIDGE ALOFT AND PLENTY OF DAYTIME SUN WILL LEAD TO HIGHS IN THE MID 80S INLAND AND CLOSER TO 80 AT THE COAST.
646 AM CDT FRI OCT 23 2015 BROAD UPPER LOW WILL CONTINUE LIFTING NORTHWARD ACROSS THE PLAINS TODAY BEFORE BEING CAPTURED BY THE WESTERLY AND TAKEN EASTWARD THIS WEEKEND. EXPECT PRECIPITATION TO HAVE ENDED BY EARLY SATURDAY MORNING WITH HIGH PRESSURE PUSHING IN BEHIND.
1211 PM EDT FRI OCT 23 2015 HIGH PRESSURE WILL BUILD IN FROM THE WEST TODAY AND TONIGHT AND CREST OVER THE AREA SATURDAY MORNING.
POSSIBLE MINOR COASTAL FLOODING DURING HIGH TIDES THIS WEEKEND HIGH PRESSURE OVER THE SOUTHEASTERN UNITED STATES WILL REMAIN NEARLY STATIONARY TODAY INTO TONIGHT. THE SHORT RANGE MODELS ARE SHOWING A NON-TROPICAL LOW PRESSURE TO DEVELOP OVER THE NORTHWEST GULF OF MEXICO THIS WEEKEND. AS THE HIGH OVER THE SOUTHEASTERN UNITED STATES MOVES SLOWLY TO THE EAST INTO THE WESTERN ATLANTIC WATERS. THE HIGH RISK OF RIP CURRENTS WILL CONTINUE THROUGH TONIGHT FOR THE EAST COAST BEACHES. AS THE HIGH OVER THE WESTERN ATLANTIC WATERS WEAKENS WHILE CONTINUING TO MOVE FURTHER EAST INTO THE ATLANTIC WATERS.
740 AM CDT FRI OCT 23 2015 Moisture channel imagery shows upper low in western NE and the models pretty consistent in bringing it to the east into southwest MN/northwest IA by evening. Moisture advection in difluent zone ahead of the low had brings significant rain from MO into IL this morning.
The upper level low over the Central Rockies early this morning will open and fill as its remnant energy shifts northeast into the Northern Plains over the next 24 hours. A steady plume of deep atmospheric moisture oriented longitudinally ahead of this low will shift east into the Mississippi Valley and become more diagonally oriented from southwest to northeast during this time. Better coverage of showers and perhaps even a few thunderstorms will develop across the region on Saturday as moisture and lift increase ahead of a cold front trailing from low pressure over southeastern Canada. The primary band of precipitation will shift into western Kentucky Saturday night as the cold front makes its southeastward passage through the area.
A COLD FRONT WILL BRING A SHIFT TO NORTHERLY WINDS AT KGUY BY 16Z. COLD FRONT MOVES THROUGH FORECAST AREA TODAY.
EXPECT SLIGHTLY COOLER TODAY AND A LITTLE WARMER TONIGHT.
OUT WEST A MODERATE LLJ FOCUSES ON THE HIGH PLAINS. THE INTERACTION OF THIS MOISTURE/INSTABILITY WITH A S/W LIFTING OUT OF THE HIGH PLAINS SHOULD IGNITE STORMS.
939 PM EDT TUE JUL 14 2015 A TROUGH OF LOW PRESSURE WILL LINGER INLAND WITH HIGH PRESSURE OFFSHORE THROUGH WEDNESDAY.
1134 PM EDT TUE JUL 14 2015 AN UPPER RIDGE WILL REMAIN CENTERED OVER THE SOUTHERN PLAINS AND LOWER MISSISSIPPI VALLEY. WHILE AN UPPER TROUGH REMAINS OVER THE EAST COAST.