Aikyam-Lab/Synoptic-Bench huggingface dataset:
1117 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL RESULT IN A CONTINUATION OF DRY CONDITIONS AND UNSEASONABLY WARM TEMPERATURES THROUGH THE FIRST PART OF THE WEEK. THE HIGH WILL WEAKEN BY MID WEEK. HIGH PRESSURE AND DRY CONDITIONS WILL CONTINUE ACROSS THE AREA TODAY. CONTINUED CURRENT TREND OF GOING WARMER THAN GUIDANCE FOR HIGH TEMPERATURES TODAY.
245 PM CDT SUN APR 17 2016 WV imagery shows the upper trough now centered over western CO, w/a broad swath of convection approaching east Texas/Texas Gulf Coast. Closer to home, a cold front is moving thru West Texas, and has sharpened up a weak dryline over the eastern fringes of the CWA, and along and east of this feature appear to be the best chances for convection later this afternoon/evening. Cold front will continue thru the region overnight, w/thicknesses really coming down over the next 24 hours.
1050 AM EDT SUN APR 17 2016 RIDGING AT THE SURFACE AND ALOFT WILL LEAD TO MODERATING TEMPERATURES EARLY THIS WEEK.
HIGH BLOCKING PATTERN REMAINS IN PLACE WITH MID LEVEL RIDGE AXIS PROGGD TO BE PARKED ACROSS WI THROUGH MONDAY. SO WOULD EXPECT HIGHS AT LEAST ON PAR WITH WHAT WE HAVE TODAY AND EVEN A SMIDGE WARMER. TRENDED TOWARDS THE WARMER GUID VALUES.
325 PM CDT SUN APR 17 2016 A blocking pattern remains in place for most of tonight, ensuring another night of quiet wx conditions for most of the CWA. The upper ridge axis over the eastern CONUS is forecast to start breaking down late tonight, which will allow a cutoff low over the western CONUS to shift slightly eastward. Kanofsky An upper level blocking pattern over the eastern CONUS will continue to hold firm thru early Monday, keeping any influence at bay from a wrapped up and cutoff LOW over the eastern Rockies.
101 PM EDT SUN APR 17 2016 PERSISTENT RIDGE OF HIGH PRESSURE WILL MAINTAIN SUNNY AND WARM CONDITIONS THROUGH MONDAY.
A COLD FRONT WILL MOVE THROUGH MONDAY NIGHT WITH A SLIGHT CHANCE OF SHOWERS.
102 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL REMAIN IN CONTROL OF THE REGION INTO MONDAY. THE HIGH WILL WEAKEN MONDAY EVENING ALLOWING A WEAK COLD FRONT TO DRIFT ACROSS THE AREA MONDAY NIGHT.
1141 AM MDT SUN APR 17 2016 THE HIGHLIGHTS HAVE BEEN CANCELLED FOR THE WESTERN COLORADO MTNS. THE UPPER LEVEL LOW CONTINUES TO LIFT NORTH TOWARD WYOMING WITH SHOWER ACTIVITY GREATLY DIMINISHED ACROSS THE WESTERN SLOPE THIS MORNING. NEW 12Z NAM GETTING A BIT AGGRESSIVE WITH ANOTHER WAVE ROTATING AROUND THE LOW AND INTO THE SOUTHERN MOUNTAINS THIS AFTERNOON AND TONIGHT. SNOW ALSO PACKING UP AGAINST THE EASTERN UINTAS THIS MORNING IN NORTHEAST UTAH NOW THAT SOME MOISTURE HAS WORKED BACK IN ON THE NORTHWEST PERIPHERY OF THE UPPER LOW. MODELS WERE IN GOOD AGREEMENT WITH A CONTINUED RETROGRADE MOTION TO THE NORTHWEST WITH THE LOW/S CENTER REPOSITIONING OVER NORTHWEST COLORADO THIS AFTERNOON. THE LOW MOVES LITTLE TONIGHT THROUGH MONDAY SO EXPECT MUCH TO CHANGE.
116 PM EDT SUN APR 17 2016 RIDGING AT THE SURFACE AND ALOFT WILL LEAD TO MODERATING TEMPERATURES EARLY THIS WEEK.
THE COLD FRONT HAS MOVED EAST. THE EXPANSIVE UPPER LEVEL LOW WAS CENTERED OVER CENTRAL COLORADO. THE FORCING/COLD FRONT SLID MUCH FARTHER EAST THAN GUIDANCE WAS PREDICTING. WARMER TEMPERATURES ARE FORECAST DUE TO A SLIGHT WARMING IN THE ATMOSPHERE AND POTENTIAL SUN.
852 AM MDT SUN APR 17 2016 THE UPPER LEVEL LOW CONTINUES TO LIFT NORTH TOWARD WYOMING WITH SHOWER ACTIVITY GREATLY DIMINISHED ACROSS THE WESTERN SLOPE THIS MORNING. NEW 12Z NAM GETTING A BIT AGGRESSIVE WITH ANOTHER WAVE ROTATING AROUND THE LOW AND INTO THE SOUTHERN MOUNTAINS THIS AFTERNOON AND TONIGHT. SNOW ALSO PACKING UP AGAINST THE EASTERN UINTAS THIS MORNING IN NORTHEAST UTAH NOW THAT SOME MOISTURE HAS WORKED BACK IN ON THE NORTHWEST PERIPHERY OF THE UPPER LOW. MODELS WERE IN GOOD AGREEMENT WITH A CONTINUED RETROGRADE MOTION TO THE NORTHWEST WITH THE LOW/S CENTER REPOSITIONING OVER NORTHWEST COLORADO THIS AFTERNOON. THE LOW MOVES LITTLE TONIGHT THROUGH MONDAY SO EXPECT MUCH TO CHANGE.
227 PM MDT SUN APR 17 2016 High pressure will continue to bring fair weather to the Northern Rockies today.
WITH A DEEP TROF/UPPER LOW OVER THE FOUR CORNERS/INTERMOUNTAIN WEST. AND AN AMPLIFIED DOWNSTREAM RIDGE STRETCHING FROM THE GULF COAST TO THE GREAT LAKES. AN EXPANSIVE HIGH PRESSURE SYSTEM WAS CENTERED OVER THE ERN CONUS. WITH AN ELONGATED TROF OF LOW PRESSURE EXTENDING FROM DEEP SOUTH TX NWD THROUGH THE PLAINS AND INTO THE UPPER MIDWEST. THE HIGHLY MERIDIONAL UPPER LEVEL PATTERN ACROSS THE CONUS IS PROGGED TO SLOWLY DAMPEN OVER THE NEXT 72 HRS. WITH THE ERN CONUS RIDGE ERODING/FLATTENING OUT WHILE THE UPPER TROF TO THE WEST FILLS AND LIFTS TO THE NE.
Upper ridge will hold through the short term, keeping things sunny and dry. High temps will again be in the low and mid 80s on Monday. The upper ridge does begin to break down on Monday night and this will allow a few upper level clouds to stream into the area.
1236 PM CDT SUN APR 17 2016 Very block upper air pattern will persist featuring a stout omega block with the upper ridge dominating the MS and OH/TN Valley region. This pattern aloft will maintain high pressure in the low levels over the eastern U. Less cloudiness today, slightly warmer temperatures aloft, and a deeply mixed boundary layer should translate to highs 2-3 degrees warmer than yesterday with upper 70s to lower 80s common.
May see it focus on a weak inverted trof that is located on the western fringes of the Tulsa Forecast area.
5 INCHES IN THE LOWER LEVELS OF THE COLUMN WHILE STRONG INVERSION IS IN PLACE ABV 850MB. CEILINGS WILL REMAIN IN THE LOWER END AS WELL WITH THE POTENTIAL FOR A FEW SHOWERS AND THUNDERSTORMS ACROSS THE CWA. LOW TEMPERATURES OVERNIGHT WILL REMAIN IN THE LOW TO MID 70S. THE POTENTIAL FOR RAIN WILL CONTINUE WITH SEVERAL IMPULSES TRAVELING ACROSS THE PERIPHERY OF THE LOW.
345 PM CDT SUN APR 17 2016 CURRENT SURFACE ANALYSIS PLACES INVERTED TROUGH STRETCHING NORTHWARD THROUGH THE CENTRAL PLAINS INTO THE UPPER MIDWEST WITH HIGH OVER NORTHERN ONTARIO AND RIDGE STRETCHING OFF TO THE WEST. THOUGH WITH WARMER AIR MOVING IN ALOFT A PERIOD OF LIGHT FREEZING RAIN OR SLEET WILL NOT BE OUT OF THE QUESTION. UPPER LOW LOITERS GRADUALLY TO THE NORTH WITH THE NEXT STRONGER WAVE WRAPPING INTO THE AREA. PERIODS OF SNOW OVER THE SOUTHWEST WILL GRADUALLY SWITCH OVER TO RAIN IN THE MORNING WITH THE WARMER AIR MOVING IN.
HIGH PRESSURE WILL DOMINATE THE AREAS WEATHER WITH DRY CONDITIONS. A LOW PRESSURE SYSTEM TO THE WEST MAY ADD SOME HIGH LEVEL CLOUDS LATER TODAY.
354 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL PREVAIL OVER THE REGION EARLY THIS WEEK.
350 PM EDT SUN APR 17 2016 A COLD FRONT WILL CROSS THE REGION THIS EVENING AND STALL IN THE GULF OF MAINE MONDAY.
230 PM EDT SUN APR 17 2016 RIDGING AT THE SURFACE AND ALOFT WILL LEAD TO MODERATING TEMPERATURES EARLY THIS WEEK.
AN UPPER LEVEL LOW PRESSURE SYSTEM CURRENTLY OVER COLORADO WILL CONTINUE SPREADING SHOWERS INTO THE REGION OVER THE NEXT 48 HOURS.
THE WEATHER PATTERN FOR THE FORECAST PERIOD WILL NOT BE CONDUCIVE TO CLOUD FORMATION WITH A LARGE RIDGE EXTENDING ACROSS MUCH OF THE EASTERN THIRD OF THE NATION.
243 PM PDT SUN APR 17 2016 High pressure will remain in control through early this week with warm and dry weather. Cooler and more unsettled weather by the end of the week. Plenty of sunshine across NorCal this afternoon with strong high pressure overhead. Strong high pressure will continue across the region through Monday.
1130 AM MDT SUN APR 17 2016 UPDATED AVIATION HIGH PRESSURE WILL KEEP DRY AND SUNNY CONDITIONS OVER THE AREA TODAY.
229 PM PDT SUN APR 17 2016 High pressure will keep winds light and temperatures well above normal through midweek.
300 PM EDT SUN APR 17 2016 HIGH PRESSURE OVER THE REGION WILL WEAKEN MONDAY EVENING ALLOWING A WEAK COLD FRONT TO DRIFT ACROSS THE AREA MONDAY NIGHT.
256 PM EDT SUN APR 17 2016 HIGH PRESSURE REMAINS OVER THE AREA THROUGH MONDAY NIGHT.
AN EXTENSIVE AREA OF HIGH PRESSURE (1028 MB) IS CENTERED OVER THE SOUTHEAST UNITED STATES. WITH A RIDGE REACHING DOWN THE EASTERN GULF OF MEXICO.
700 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL MAINTAIN VFR CONDITIONS WILL LITTLE MORE THAN A FEW PATCHES OF CIRRUS. A COLD FRONT WILL APPROACH LAKE SUPERIOR ON MONDAY CAUSING WINDS TO VEER MORE SOUTHWESTERLY BY MIDDAY MONDAY. ISSUED 340 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL CONTINUE TO INFLUENCE THE WEATHER ACROSS SOUTHEAST MICHIGAN THIS AFTERNOON AND INTO THE DAY TOMORROW. LARGE UPPER LEVEL LOW OVER THE WESTERN CONUS THAT HAS BEEN HELD IN PLACE BY HIGH PRESSURE OVER THE EAST WILL START TO SHIFT EAST MONDAY. THIS WILL ALLOW FOR SLIGHTLY COOLER AIR TO FLOW OVER THE AREA BUT TEMPS WILL STILL HOVER AROUND NORMAL.
356 PM EDT SUN APR 17 2016 HIGH PRESSURE OVER THE AREA THIS AFTERNOON WILL MOVE SOUTH TO THE OHIO VALLEY MONDAY CONTINUING TO PROVIDE OUR AREA WITH FAIR WEATHER. LOWS TONIGHT WILL RANGE FROM THE MID 40S TO THE LOWER 50S WITH HIGHS MONDAY IN THE UPPER 70S AND LOWER 80S.
955 AM CDT SUN APR 17 2016 Temperatures have been rising steadily and are already largely in the lower 70s. High pressure at the surface and aloft will continue today, with very little change in the pattern from yesterday, providing for clear skies. The higher wind speeds will be toward western IL.
LOCAL RADARS ARE DETECTING SCATTERED SHOWERS AND AN OCCASIONAL THUNDERSTORM ON THE OUTER STRAITS BEYOND 20 NM SOUTH OF THE LOWER AND MIDDLE KEYS. AN EXPANSIVE AREA OF HIGH PRESSURE IS CENTERED OVER THE DELMARVA PENINSULA WITH A RIDGE JAMMING DOWN THE ENTIRE EASTERN SEABOARD AND THE SUNSHINE STATE.
502 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL MAINTAIN DRY AND WARM WEATHER THROUGH MONDAY. WITH ONLY CLOUDS AND COOLER TEMPERATURE EXPECTED UPON PASSAGE. A WEAKNESS IN THE HIGH PRESSURE RIDGE OVERHEAD WILL TRANSIT THE AREA FROM NORTH TO SOUTH OVERNIGHT. FRIES THE STRONG RIDGE WILL REMAIN IN CONTROL MONDAY.
1210 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL MAINTAIN DRY AND WARM WEATHER THROUGH MONDAY. WITH ONLY CLOUDS AND COOLER TEMPERATURE EXPECTED UPON PASSAGE. THE STRONG RIDGE WILL REMAIN IN CONTROL MONDAY.
157 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL KEEP MAINLY SUNNY SKIES AND WARM SPRING AIR OVER NEW YORK AND PENNSYLVANIA THROUGH MONDAY.
THE LOWEST CIGS ARE CURRENTLY NEAR THE MFE TERMINAL AND NEAR THE COAST WITH HAZE TRAP UNDERNEATH THIS BKN TO OVC DECK. MAIN H5 TROUGH HAS ENTRENCHED ITSELF ACROSS THE SOUTHERN ROCKIES THIS MORNING.
HIGH PRESSURE WILL CONTINUE TO BUILD OVER THE AREA AND PERSIST FOR THE NEXT SEVERAL DAYS CREATING A WARMING TREND AND MOSTLY CLEAR SKIES. LOW PRESSURE WILL APPROACH THE REGION LATE IN THE WEEK BRINGING ANOTHER CHANCE OF PRECIPITATION. HIGH AMPLITUDE RIDGE CONTINUING TO BUILD INLAND INTO THE WESTERN CONUS TODAY WITH MAINLY CLEAR SKIES AND A LESS PREVALENT NORTHERLY FLOW ALOFT RESULTING IN DECREASED WINDS. THE 12Z WRF IS INDICATING THE RIDGE WILL CONTINUE TO STRENGTHEN TONIGHT AND MONDAY WITH CONTINUED WARMING ANTICIPATED AS A RESULT.
350 PM EDT SUN APR 17 2016 HIGH PRESSURE OVER THE REGION WILL WEAKEN MONDAY EVENING ALLOWING A WEAK COLD FRONT TO DRIFT ACROSS THE AREA MONDAY NIGHT.
HIGH PRESSURE WILL REPLACE THE STORM BY THE MIDDLE OF THE WEEK. WATER VAPOR LOOP SHOWS A CLOSED LOW OVER COLORADO WITH A RIDGE ALONG THE WEST COAST. AN UPPER LOW CONTINUES TO ROTATE OVER COLORADO THIS MORNING. WITH UTAH AND SOUTHWEST WYOMING ON THE WESTERN EDGE OF THIS LOW.
CURRENT RECORD HIGHS FOR TODAY (MONDAY) ACROSS THE AREA: MEDFORD: 86/1954 (87/1934) ROSEBURG: 85/1939 (86/1939) KLAMATH FALLS: 75/1962 (76/1994) NORTH BEND: 78/1983 (74/1918) MT SHASTA CITY: 80/1939 (78/1939) MONTAGUE: 85/1949 (82/1994) ALTURAS: 83/1910 (83/1954) CURRENT SURFACE ANALYSIS SHOWS THE THERMAL TROUGH SITUATED ALONG THE COAST.
/ISSUED 926 AM EDT SUN APR 17 2016/ UPPER LEVEL RIDGING CONTINUES TO STRENGTHEN ACROSS THE GULF REGION IN THE WAKE OF A VANISHING UPPER TROUGH AND SURFACE FRONT RESPONSIBLE FOR MUCH OF THE CLOUD COVER. AS HIGH PRESSURE REMAINS SEATED TO THE NORTH OF THE WATERS.
DEEP OMEGA BLOCKING PATTERN WILL MAINTAIN A BREEZY/WINDY WX PATTERN ACRS CENTRAL FL AS THE ANCHORING RIDGE DROPS INTO THE MID/DEEP SOUTH. H85-H70 SUBSIDENCE INVERSION WILL SHARPEN AS THE RIDGE BUILDS SWD. (FROM PREV DISC) HIGH PRESSURE CENTERED OVER THE EASTERN U. HIGH PRESSURE BUILDING SOUTHEAST AND OFFSHORE OF THE NORTHEAST U. COAST WILL NUDGE A WEAK COLD FRONT SOUTH OF THE MID ATLANTIC REGION AND INTO THE ATLANTIC WATERS EAST OF THE FLORIDA COAST. INSTEAD OF BRINGING IT THROUGH THE REGION AS A WEAK BACK DOOR COLD FRONT.
1015 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL MAINTAIN DRY AND WARM WEATHER THROUGH MONDAY. WITH ONLY CLOUDS AND COOLER TEMPERATURE EXPECTED UPON PASSAGE. THE STRONG RIDGE WILL REMAIN IN CONTROL MONDAY.
340 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL CONTINUE TO INFLUENCE THE WEATHER ACROSS SOUTHEAST MICHIGAN THIS AFTERNOON AND INTO THE DAY TOMORROW. LARGE UPPER LEVEL LOW OVER THE WESTERN CONUS THAT HAS BEEN HELD IN PLACE BY HIGH PRESSURE OVER THE EAST WILL START TO SHIFT EAST MONDAY. THIS WILL ALLOW FOR SLIGHTLY COOLER AIR TO FLOW OVER THE AREA BUT TEMPS WILL STILL HOVER AROUND NORMAL.
125 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL RESULT IN A CONTINUATION OF DRY CONDITIONS AND UNSEASONABLY WARM TEMPERATURES THROUGH THE FIRST PART OF THE WEEK. THE HIGH WILL WEAKEN BY MID WEEK. HIGH PRESSURE AND DRY CONDITIONS WILL CONTINUE ACROSS THE AREA TODAY. CONTINUED CURRENT TREND OF GOING WARMER THAN GUIDANCE FOR HIGH TEMPERATURES TODAY.
331 PM MDT SUN APR 17 2016 SNOWFALL HAS BEEN WINDING DOWN OVER MUCH OF THE CWA AS THE UPPER LOW PIVOTS NORTHWESTWARD AND DRIER AIR ALOFT MOVES INTO SOUTHEAST WY. CANNOT RULE OUT LIGHT SNOW SHOWERS OR EVEN LIGHT FREEZING DRIZZLE (DUE TO DRYING ALOFT). THE CLOSED LOW WILL REMAIN RATHER STATIONARY THROUGH MONDAY EVENING OVER NORTHWEST COLORADO. THE UPPER LOW WILL SHIFT EASTWARD INTO THE WESTERN NEBRASKA PANHANDLE BY TUES AFTN.
221 PM CDT SUN APR 17 2016 GOOD SUBSIDENCE UNDERNEATH UPPER LEVEL RIDGING HAS KEPT SKIES SUNNY TODAY WITH TEMPS CLIMBING WELL INTO THE 70S AT EARLY AFTERNOON. INITIALLY A HYBRID OF OMEGA/REX BLOCKING PATTERN ACROSS CONTINENAL US WITH EASTERN UPPER RIDGING REMAINING OVER OUR AREA THROUGH MID WEEK KEEPING CURRENT STORM SYSTEM OUT IN THE CENTRAL AND SOUTHERN PLAINS INSITU.
THE HIGH SURF ADVISORY WAS EXTENDED FOR THE FLORIDA BEACHES THROUGH MONDAY MORNING.
251 PM MDT SUN APR 17 2016 THE UPPER LEVEL LOW STILL APPEARS TO BE OVER CENTRAL COLORADO AND IS FCST TO RETROGRADE INTO NWRN CO/SWRN WY OVERNIGHT. BY LATE EVENING THE LOW LEVEL FLOW WILL BECOME LIGHT NNW HOWEVER MOISTURE WILL CONTINUE UP TO 700 MB. ON MON THE UPPER LEVEL LOW WILL BE NEARLY STATIONARY OVER NWRN CO/SWRN WY.
CURRENT SURFACE ANALYSIS PLACES INVERTED TROUGH STRETCHING NORTHWARD THROUGH THE CENTRAL PLAINS INTO THE UPPER MIDWEST WITH HIGH OVER NORTHERN ONTARIO AND RIDGE STRETCHING OFF TO THE WEST. THOUGH WITH WARMER AIR MOVING IN ALOFT A PERIOD OF LIGHT FREEZING RAIN OR SLEET WILL NOT BE OUT OF THE QUESTION. UPPER LOW LOITERS GRADUALLY TO THE NORTH WITH THE NEXT STRONGER WAVE WRAPPING INTO THE AREA. PERIODS OF SNOW OVER THE SOUTHWEST WILL GRADUALLY SWITCH OVER TO RAIN IN THE MORNING WITH THE WARMER AIR MOVING IN.
228 PM CDT SUN APR 17 2016 A PERSISTENCE FORECAST IS WORKING WELL TODAY AS WE SIT UNDER THE WESTERN FRINGE OF HIGH PRESSURE. AND THE LIKLYHOOD OF A CLOSED LOW MOVING SLOWER THAN FORECAST BY MODELS.
154 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL KEEP SUNNY SKIES AND WARM SPRING AIR OVER NEW YORK AND PENNSYLVANIA THROUGH EARLY MONDAY. A COLD FRONT WILL BRING A CHANCE OF SHOWERS LATE MONDAY AND MONDAY NIGHT. HIGH PRESSURE IS IN CONTROL SO SUNNY SKIES WILL PERSIST AND WITH TEMPERATURES ALOFT EVEN WARMER THAN YESTERDAY, EXPECT HIGHS IN THE LOW TO MID 70S.
HIGH PRESSURE WILL BRING DRY WEATHER ALONG WITH A WARMING TREND THIS WEEK.
1014 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL CONTROL THE WEATHER TODAY WITH WARM TEMPERATURES. ON MONDAY A COLD FRONT WILL MOVE SOUTH OUT OF CANADA. THE SHOWERS WILL SPREAD SOUTH DURING THE EVENING AS LOW PRESSURE DEVELOPS ALONG THE FRONT.
1006 AM MDT SUN APR 17 2016 HIGH PRESSURE WILL KEEP DRY AND SUNNY CONDITIONS OVER THE AREA TODAY. VFR CONDITIONS WITH CLEAR SKIES WILL CONTINUE OVER THE FORECAST AREA THROUGH AT LEAST SUNDAY EVENING DUE TO HIGH PRESSURE ALOFT.
1220 PM CDT SUN APR 17 2016 Temperatures have been rising steadily and are already largely in the lower 70s. High pressure at the surface and aloft will continue today, with very little change in the pattern from yesterday, providing for clear skies. The higher wind speeds will be toward western IL.
353 PM CDT SUN APR 17 2016 A STRONG CLOSED UPPER LEVEL LOW OVER COLORADO WILL CONTINUE TO BE THE WEATHER MAKER ACROSS THE REGION FOR THE NEXT FEW DAYS. THIS LOW WILL ROTATE AROUND COLORADO AND WYOMING DURING THE NEXT 72 HOURS BEFORE STARTING ITS TREK EASTWARD ACROSS THE CENTRAL PLAINS MIDWEEK. THE LOW WILL THEN OPEN UP AS IT MOVES FARTHER EAST.
132 PM EDT SUN APR 17 2016 A QUIET DRY WEATHER PATTERN WILL PREVAIL THROUGH THE SHORT TERM AS AN OMEGA BLOCKING PATTERN HOLDS A LARGE DOME OF HIGH PRESSURE OVER THE EASTERN THIRD OF THE COUNTRY. GENERALLY IN THE LOWER TO MID 70S DESPITE AMPLE SUNSHINE. LIGHT EASTERLY FLOW UNDER CLEAR SKIES WILL PRODUCE COOLER THAN NORMAL LOWS ACROSS THE AREA FOR TONIGHT.
WILL CONTINUE THE HIGHLIGHTS OVER SOUTHEAST WY FOR NOW. THE UPPER LOW SLOWLY RETROGRADES FROM NORTH CENTRAL TO NORTHWEST COLORADO WITH A VORTICITY LOBE. NEARLY STATIONARY UPPER LOW STAYS OVER NORTHWEST COLORADO. EVEN MORE DRIER AIR AT LOW AND MID LEVELS WILL WORK INTO OUR COUNTIES AS THE UPPER LOW CONTINUES TO SPIN. CHANCES FOR SNOW CONTINUE TO DECREASE AS THE UPPER LOW MOVES OVER SOUTHEAST WYOMING AND AS THE MID LEVEL FLOW TURNS WEST AND OF A DOWNSLOPE DIRECTION.
607 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL PREVAIL OVER THE REGION EARLY THIS WEEK.
BUT WINDS WILL NOT BE AS STRONG AS YESTERDAY WHILE THE SFC-LOW/LVL RIDGE EDGES CLOSER TO THE AREA.
341 PM CDT SUN APR 17 2016 FULL LATITUDINAL TROUGH ACROSS THE INTERMOUNTAIN WEST WILL REMAIN STATIONARY THROUGH THE PERIOD. THE UPPER LOW IS FINALLY BEGINNING TO FILL AS IT REMAINS CENTERED FROM CENTRAL COLORADO TO WESTERN SD. DECIDED TO LOWER LOWS A CATEGORY GIVING UPPER 30S FOR THE LOWER BRULE AREA.
325 PM CDT SUN APR 17 2016 20Z water vapor imagery showed the closed upper low over west central CO and profiler data suggests another speed max/vort max was about to swing through the base of the upper low. At the surface, an inverted trough of low pressure extended from the Rio Grand north into MN. At this time, think lows should range from the upper 40s across the northwest to around 60 in the eastern counties based on the models prog of the low level wind shift.
303 PM EDT SUN APR 17 2016 HIGH PRESSURE ACROSS THE AREA THIS EVENING WILL WEAKEN AND MOVE TO THE SOUTHWEST THROUGH MONDAY.
345 PM CDT SUN APR 17 2016 Despite a wide-spread cumulus field building throughout the day and upper level cirrus moving into the region from the west, temperatures have managed to climb into the low to mid 70s early this afternoon. The large closed low churning away over the inter- mountain west has moved very little since yesterday. Precipitation chances will gear up heading into the early morning hours as a much stronger vorticity max peels away from the low.
1150 AM MDT SUN APR 17 2016 THE HIGHLIGHTS HAVE BEEN CANCELLED FOR THE WESTERN COLORADO MTNS. THE UPPER LEVEL LOW CONTINUES TO LIFT NORTH TOWARD WYOMING WITH SHOWER ACTIVITY GREATLY DIMINISHED ACROSS THE WESTERN SLOPE THIS MORNING. NEW 12Z NAM GETTING A BIT AGGRESSIVE WITH ANOTHER WAVE ROTATING AROUND THE LOW AND INTO THE SOUTHERN MOUNTAINS THIS AFTERNOON AND TONIGHT. SNOW ALSO PACKING UP AGAINST THE EASTERN UINTAS THIS MORNING IN NORTHEAST UTAH NOW THAT SOME MOISTURE HAS WORKED BACK IN ON THE NORTHWEST PERIPHERY OF THE UPPER LOW. MODELS WERE IN GOOD AGREEMENT WITH A CONTINUED RETROGRADE MOTION TO THE NORTHWEST WITH THE LOW/S CENTER REPOSITIONING OVER NORTHWEST COLORADO THIS AFTERNOON. THE LOW MOVES LITTLE TONIGHT THROUGH MONDAY SO EXPECT MUCH TO CHANGE.
609 PM EDT SUN APR 17 2016 HIGH PRESSURE OVER THE REGION WILL WEAKEN MONDAY EVENING ALLOWING A WEAK COLD FRONT TO DRIFT ACROSS THE AREA MONDAY NIGHT.
241 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL KEEP MAINLY SUNNY SKIES AND WARM SPRING AIR OVER NEW YORK AND PENNSYLVANIA THROUGH MONDAY.
Short range models indicate a continuous series of H5 vort maxima cycling around the closed low tonight as it lifts slowly northward into Wyoming. For temperatures tonight, partly to mostly cloudy skies combined with little change to the air mass across the high plains will result similar low temperatures to this morning across west central and southwest Kansas. Expect lows in the 30s and the lower 40s(F) across the area. Although the cooler air mass will remain in place across western Kansas through Monday, any lingering cloud cover will decrease through the afternoon allowing for more surface heating. Highs may struggle to reach the lower 60s(F) in west central to central Kansas Monday afternoon with the lower to mid 60s(F) in south central Kansas. We will remain under the influence of this stalled out upper low through mid-week.
TEMPERATURES WILL TOP OUT SLIGHTLY WARMER THAN NORMAL. LATEST SATELLITE IMAGERY SHOWED AN AMPLIFIED PATTERN OVER THE CONUS WITH A CLOSED MID TO UPPER TROUGH OVER THE WESTERN US AND A BLOCKING MID TO UPPER OMEGA RIDGE OVER EASTERN US. ON THE SURFACE WE WERE UNDER EAST SOUTHEAST LOW LEVEL FLOW FROM HIGH PRESSURE TO THE EAST AND A FRONTAL BOUNDARY OVER THE PLAINS. FOR THE NEXT FEW DAYS THE CLOSED SYSTEM OUT WEST WILL SPIN AGAINST THE BLOCKING RIDGE. AS FAR AS TEMPS ARE CONCERN WE WILL GET FULL INSOLATION FOR A DECENT MIXING IN THE LOW LEVELS. THE SHORT WAVE RIDGE AXIS WILL BE PUSHED TO THE AL/MS BORDER AREA. FOR MONDAY NIGHT IT WILL BE ANOTHER COOL NIGHT WITH LOWS FROM THE LOWER 50S EAST TO THE LOWER 60S WEST.
POST ANALYSIS SHOWED FAVORABLE UPSLOPE FLOW IN THE LOWER LEVELS ALONG WITH STG MID LVL ASCENT. COOLER TEMPERATURES OVERNIGHT COMBINED WITH A DRY SLOT TO HELP DESTABILIZE THE SITUATION MOMENTARILY. THE UPPER LOW OVER CENTRAL COLORADO THIS MORNING WILL SLOWLY MOVE NORTHEAST THROUGH THE DAY. ADDITIONAL SNOW AMOUNTS ARE EXPECTED TO BE UP TO AN INCH OVER THE PLAINS AND ANOTHER 1 TO 3 INCHES OVER THE HIGHER TERRAIN. SLIGHT INSTABILITY AND A WEAK DISTURBANCE WILL ALLOW FOR SNOW TO INCREASE OVER THE HIGH MOUNTAINS. LIGHT SNOW WILL REMAIN FALLING OVER THE HIGH COUNTRY. UPPER LEVEL LOW EXPECTED TO BE OVER NORTHWEST COLORADO/SOUTHWEST WYOMING EARLY MONDAY MORNING. A PIECE OF ENERGY ASSOCIATED WRAPPING AROUND THIS UPPER LOW MAY STILL COME INTO PLAY MONDAY AFTERNOON AND NIGHT. SO WILL CARRY THE HIGHEST POPS THERE FOR NOW.
344 PM CDT SUN APR 17 2016 UPPER RIDGE EXTENDS FROM LOUISIANA NORTHWARD TO MICHIGAN THIS AFTERNOON. UPPER LOWS OVER THE ATLANTIC OCEAN AND COLORADO. HIGH PRESSURE AT THE SOUTHERN END OF HUDSON BAY EXTENDS SOUTHWARD TO THE FLORIDA PANHANDLE. AREAS THAT HAVE NOT SEEN MUCH SUNSHINE HAVE HAD PROBLEMS GETTING OUT OF THE LOWER 70S.
SHOULD BE SLIGHTLY COOLER IN MOST PLACES TONIGHT AS DEWPOINTS FALL AND WINDS DIMINISH THIS EVENING.
237 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL REMAIN CENTERED JUST TO THE NORTH THROUGH THE WEEKEND.
1218 PM CDT SUN APR 17 2016 With the bulk of the rainfall having moved east into central Texas, will update grids to reflect current radar trends and the latest info from the high res models.
EARLY MORNING SFC ANALYSIS LOOKS FAIRLY SIMILAR TO THIS TIME YESTERDAY WITH HIGH PRESSURE IN PLACE ALONG THE ATLANTIC SEA BOARD AND LOW PRESSURE OVER WRN TX. WITH RIDGING IN PLACE FROM THE WRN GULF COAST THROUGH THE MID-SOUTH TO THE GREAT LAKES. SWRN CONUS UPPER LOW IS PROGGED TO CONTINUE DRIFTING NEWD INTO TONIGHT WHICH SHOULD BEGIN TO BREAK DOWN THE RIDGE SITTING ATOP THE FORECAST AREA ATTM.
1206 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL REMAIN IN CONTROL OF THE REGION INTO MONDAY. THE HIGH WILL WEAKEN MONDAY EVENING ALLOWING A WEAK COLD FRONT TO DRIFT ACROSS THE AREA MONDAY NIGHT.
HIGH PRESSURE AND VFR CONDITIONS ARE FORECAST TO HOLD THROUGH THE FORECAST PERIOD.