Aikyam-Lab/Synoptic-Bench huggingface dataset:
321 PM CDT FRI APR 22 2016 THE UPPER LEVEL RIDGE IS SHOWN WELL ON WV IMAGERY THIS AFTERNOON WITH THE AXIS OF THE RIDGE POSITIONED JUST EAST OF THE FOUR CORNERS REGION. THE RIDGE WILL CONTINUE ITS EASTWARD PROGRESSION OVERNIGHT INTO TOMORROW AFTERNOON AS AN UPPER LEVEL LOW NOW IN NORTHERN CA ALSO MAKES ITS WAY EASTWARD. UPPER LEVEL MOISTURE CONTAINED WITHIN THE RIDGE IS ALLOWING FOR MOUNTAIN TOP CONVECTION TO DEVELOP ACROSS THE SACRAMENTO AND SANGRE DE CRISTO RANGES. A LEE TROF WILL DEEPEN TOMORROW MORNING WHICH WILL INCREASE WINDS TO THE 15-20 MPH RANGE MAINLY ACROSS THE WESTERN HALF OF THE FA. OUR WESTERN ZONES SHOULD SEE CONTINUED SCATTERED CLOUD COVER BEING PRODUCED AS THE UPPER LOW MOVES CLOSER TO THE REGION.
THE FIRST OF A SERIES OF LOW PRESSURE DISTURBANCES WILL BRING SHOWERS AND LOWERING SNOW LEVELS TO SOUTHEAST IDAHO TONIGHT AND SATURDAY. AS THE LOW PASSES ON SATURDAY.
1106 AM MDT FRI APR 22 2016 HIGH PRESSURE WILL BE NUDGING EAST TODAY ALLOWING SOUTHWEST GRADIENT WINDS TO RETURN TO THE REGION. ESPECIALLY OVER THE HIGHER ELEVATIONS. APPROACHING COLD FRONT ON SATURDAY AND INCREASING CLOUD COVER WILL MAKE FOR A TRICKY WIND FORECAST THROUGHOUT THE DAY. ALSO SHOULD SEE AN INCREASE IN CONVECTIVE ACTIVITY THROUGHOUT THE DAY AS THE COLD FRONT ADVANCES EAST ACROSS THE REGION.
140 PM EDT FRI APR 22 2016 LOW PRESSURE WILL TRACK ACROSS THE REGION TODAY.
THIS EVENING THROUGH SATURDAY NIGHT CURRENT UPPER AIR ANALYSIS DEPICTS A STRONG ULL MOVING INTO THE WESTERN CONUS WHILE THE CENTRAL CONUS IS UNDER THE INFLUENCE OF A RIDGE. THE RIDGE AXIS SLIDES EAST OF AREA.
AN UPPER RIDGE WILL BUILD INTO THE REGION OVER THE NEXT 24 HOURS.
CURRENT WATER VAPOR IMAGERY SHOULD RIDGING OVER THE LEE OF THE ROCKIES AND SHIFTING EASTWARD. MIGHT SEE A STORM APPROACH THE LOWER RIO GRANDE PLAINS SATURDAY AFTERNOON BUT CONFIDENCE IS LOW.
400 PM EDT FRI APR 22 2016 A COLD FRONT FROM NEW YORK TO MISSISSIPPI VALLEY WILL MOVE EAST ACROSS THE AREA TONIGHT.
ACTIVE WEATHER PATTERN TODAY WITH THE APPROACH OF A LOW PRESSURE SYSTEM AND FRONTAL BOUNDARY.
SOUTH TO SOUTHWEST WINDS WILL INCREASE AHEAD OF THE SYSTEM AND TEMPERATURES WILL BE COOLER IN THE MOUNTAINS ON SATURDAY. CURRENT FORECAST TEMPS LOOK ALRIGHT WITH GOOD MIXING OVER THE PLAINS AND COOLER AIR JUST ARRIVING LATE IN THE DAY. EXPECT SOUTHWEST WINDS TO INCREASE IN THE MOUNTAINS OVERNIGHT WITH 40-50 MPH GUSTS OVER THE RIDGES.
243 PM CDT FRI APR 22 2016 UPPER TROUGH AXIS CONTINUES TO MOVE THROUGH THE DEEP SOUTH WITH A SURFACE FRONT GETTING PUSHED THROUGH THE STATE THIS AFTERNOON AND EVENING. THE UPPER LEVEL TROUGH AXIS WILL SHIFT WELL EAST OF THE AREA BY SATURDAY MORNING.
226 PM EDT FRI APR 22 2016 SHOWERS AND THUNDERSTORMS THIS AFTERNOON AS A COLD FRONT APPROACHES. HIGH PRESSURE DOMINATES FOR THE WEEKEND.
WARMER LOWS (MID/UPPER 40S) IN THE FAR WEST/SOUTHWEST WHERE CLOUDS AND LOW LEVEL MOISTURE AXIS LINGER THE LONGEST. PARTLY TO MOSTLY SUNNY AND VERY PLEASANT WITH HIGHS IN THE UPPER 60S TO LOWER 70S AS GREAT LAKES SURFACE RIDGING REMAINS THE DOMINANT FEATURE.
1104 AM PDT FRI APR 22 2016 A strong upper level low and associated cold front will push into the region today bringing a chance showers with thunderstorms possible this afternoon and evening. As the low dives into southern Idaho late tonight, it will shift the focus for precipitation across southeast Washington and the southern Idaho Panhandle. Temperatures will be considerably cooler than what what was experienced over the past several days.
335 PM CDT FRI APR 22 2016 HIGH PRESSURE SLIDING EAST OF THE AREA AT MID AFTN AS SOUTHERLY SFC FLOW IS OVER MOST OF THE FORECAST AREA. FARTHER NORTH IN THE COOLER AIRMASS MORE SHOWERY.
Saturday will be very pleasant with near seasonal afternoon temperatures in the lower 80s, with light south winds.
319 PM MDT FRI APR 22 2016 UPPER LOW MOVING ONSHORE ACROSS THE WEST COAST THIS AFTERNOON WHILE RIDGE MIGRATES EASTWARD FROM THE ROCKIES INTO THE HIGH PLAINS. INCREASED MIXING AND 700 MB THERMAL RIDGE HAVE LED TO A STRONG WARM UP OVER ALL OF THE REGION. ENOUGH MOISTURE HAS CREPT NORTHWARD THROUGH THE RIDGE TO PRODUCE SOME WEAK CONVECTION OVER THE MOUNTAINS. MIN TEMPS OVERNIGHT WILL REMAIN RATHER MILD AS S-SW FLOW INCREASES OVER THE REGION AHEAD OF UPPER LOW DIGGING INTO THE GREAT BASIN. INCREASING WIND ALL AREAS AS UPPER LOW LIFTS QUICKLY EASTWARD FROM THE GREAT BASIN INTO WYOMING BY LATE AFTERNOON. WITH BEST CHANCE FOR MEASURABLE PRECIP OVER THE HIGHER PEAKS OF THE CONTINENTAL DIVIDE FROM MONARCH PASS NORTHWARD. AREAS ALONG THE KS BORDER AHEAD OF THE LEE TROUGH/DRYLINE IN A MARGINAL RISK FOR A SEVERE STORM OR TWO.
408 PM EDT FRI APR 22 2016 SCATTERED RAIN SHOWERS WILL CONTINUE INTO THE EARLY EVENING AHEAD OF A COLD FRONT THAT WILL MOVE ACROSS THE NORTH COUNTRY TONIGHT. HIGH PRESSURE WILL THEN BUILD IN, SETTING US UP FOR A SUNNY BUT SEASONABLY COOL WEEKEND.
343 PM EDT FRI APR 22 2016 A COLD FRONT WILL MOVE THROUGH THE REGION TONIGHT.
UPPER LOW IS PRESENTLY FILLING OVER N CENTRAL CA. RIDGING BEHIND THE CURRENT SYSTEM WILL BE VERY SHORT LIVED AS ANOTHER UPPER LOW DIGS TOWARD THE PACIFIC NW THIS WEEKEND.
144 PM PDT FRI APR 22 2016 A LOW PRESSURE TROUGH WILL MOVE ACROSS THE REGION TONIGHT, CREATING COOLER WEATHER, MORE CLOUDS, STRONG WINDS IN THE MOUNTAINS AND DESERTS, AS WELL AS A SLIGHT CHANCE OF LIGHT SHOWERS TONIGHT.
207 PM EDT FRI APR 22 2016 A COLD FRONT WILL PUSH THROUGH THE REGION TONIGHT.
It appears that any convection will be east of the forecast area late this afternoon, associated with the upper level trough over the OH Valley region, although could not rule out isolated showers or at least a few sprinkles mainly across the IL counties of our forecast area. There may be a little fog late tonight with good radiational cooling as the north-northwest wind becomes light with surface ridging extending from the Great Lakes region south- southwest into our area. Lows tonight will be similar to the previous night or slightly cooler, and close to seasonal normals for late April.
304 PM MDT FRI APR 22 2016 HIGH AMPLITUDE UPPER-LEVEL RIDGING HAS CONTRIBUTED TO AMPLE SUNSHINE AND VERY WARM/DRY CONDITIONS ACROSS THE AREA TODAY. AFTERNOON WATER VAPOR SATELLITE IMAGERY SHOWS A STRONG UPPER LOW SPINNING OFF COAST OF NORTHERN CA/OR. GOING TO NEED TO WATCH THE LOWER ELEVATIONS OF CARBON COUNTY WITH MAV AND MET GUIDANCE BOTH SHOWING 30 KT SUSTAINED WINDS AND 50+ KNOT FLOW AT THE TOP OF THE MIXED LAYER.
The 11 am EDT regional surface analysis showed a weak cold front from northwest AL to coastal TX, preceded by a trough. Vapor imagery and upper air data showed a positive-tilted trough from IN through LA, with broad, weak Q-G forcing over our forecast area. The NWP guidance shows the Q-G forcing and rain ending this evening, though the surface cold front won't clear our forecast area till daybreak Saturday. Given today's widespread rain, and the fact that the cold front is so weak that winds will likely become calm overnight (i.
224 PM CDT FRI APR 22 2016 Isolated showers across southwest Indiana and northwest Kentucky will come to an end as we lose our heating late this afternoon and the upper low pushes off farther to our east.
120 PM EDT FRI APR 22 2016 SHOWERS AND THUNDERSTORMS TODAY WITH A COLD FRONT LATE THIS AFTERNOON AND EVENING. HIGH PRESSURE DOMINATES WEEKEND.
159 PM EDT FRI APR 22 2016 KBYX DETECTS ISOLATED SHOWERS OVER THE LOWER KEYS. AS WELL AS OVER NEARSHORE AND OFFSHORE WATERS SURROUNDING THE LOWER KEYS. TEMPERATURES ARE IN THE LOWER TO MID 80S.
700 PM EDT FRI APR 22 2016 STUBBORN LOW CLOUDS OVER THE HIGHER TERRAIN CONTINUE TO HANG ON. MUCH DRIER AIR UPSTREAM (SURFACE DEW POINTS IN THE TEENS ACROSS SOUTHERN ONTARIO) IS POISED TO WORK IN FROM THE NORTH CLEARING SKIES BY EARLY THIS EVENING AS HIGH PRESSURE BUILDS IN.
WITH COOLER MIN TEMPS BEHIND THIS MORNINGS COLD FRONT. HIGH PRESSURE BRIEFLY BUILDS ON SATURDAY PROVIDING A MOSTLY PLEASANT DAY.
A STORM SYSTEM WILL IMPACT THE AREA LATE TONIGHT THROUGH SATURDAY WITH A COLD FRONT PASSAGE. BRINGING SHOWERS AND MUCH COOLER TEMPERATURES. SATELLITE IMAGERY THIS AFTERNOON SHOWS A LARGE CIRCULATION CENTER MOVING THROUGH NORTHERN CALIFORNIA ASSOCIATED WITH AN UPPER LEVEL LOW PRESSURE SYSTEM. NUMEROUS HIGH-LEVEL CLOUDS ARE STREAMING THROUGH OUR AREA IN ADVANCE OF THIS LOW. AS THE LOW PROGRESSES ACROSS NEVADA LATE TODAY. THE SURFACE TEMPERATURE GRADIENT WILL TIGHTEN AND CREATE A TYPICAL SPRING GREAT BASIN COLD FRONT. AND COOLER TEMPERATURES BEING THE ONLY EFFECT OF THE LOW BRUSHING TO THE NORTH. A MUCH COOLER AND DAMP DAY IS IN STORE FOR MOST OF THE FORECAST AREA. SHOWERS MAY LINGER INTO THE NIGHT AS THE LOW PULLS EAST OF THE AREA.
1240 PM CDT FRI APR 22 2016 Today - Saturday: While the upper low which has dominated our weather for the past several days has moved into IL we'll still have to deal with some of its' residual after effects in the form of cloud cover. 00Z models didn't handle this very well but the 06z NAM run looks more reasonable and spreads the low clouds across the northern third of the CWA this morning before lifting and eventually scattering out by mid afternoon. Upper ridging now over the Rockies will translate east with the ridge axis passing through early Saturday.
348 PM EDT FRI APR 22 2016 A LOW PRESSURE AREA BRINGS RAIN SHOWERS TO THE NORTH COUNTRY TODAY. A COLD FRONT PUSHES THROUGH FRIDAY NIGHT AND EARLY SATURDAY. HIGH PRESSURE WILL THEN BUILD IN, SETTING US UP FOR A SUNNY BUT SEASONABLY COOL WEEKEND.
341 PM CDT FRI APR 22 2016 LATEST WV IMAGERY AND UA ANALYSIS SHOWS DRIER AIR CONTINUING TO SPREAD OVER THE REGION BEHIND AN UPR TROF AXIS THAT EXTENDS FM AN UPR LOW CROSSING THE OHIO VALLEY. UPSTREAM RIDGING WAS NOTED OVER THE SRN ROCKIES. A COLD FRONT HAS MOVED EAST OF THE AREA WITH HIGH PRES BUILDING IN BEHIND IT. EXPECT AFTN HIGHS REACHING THE LOWER 80S.
/ISSUED 1005 AM CDT FRI APR 22 2016/ A COLD FRONT HAS PUSHED THROUGH THE MIDSOUTH THIS MORNING. AN UPPER TROUGH EXTENDS FROM THE GREAT LAKES INTO THE LOWER MISSISSIPPI VALLEY WHILE A COLD FRONT STRETCHES FROM WEST TENNESSEE INTO NORTHWEST MISSISSIPPI. DRIER AND COOLER AIR IS WORKING INTO AREAS BEHIND THE FRONT ON LIGHT NORTHWEST WINDS. DEWPOINTS HAVE DROPPED INTO THE UPPER 40S AT WALNUT RIDGE. TEMPS AT 4 AM CDT RANGE FROM THE UPPER 50S OVER NORTHEAST ARKANSAS AND NORTHWEST TENNESSEE TO THE LOWER 60S EAST OF THE MISSISSIPPI RIVER. COLD FRONT FRONT AND UPPER TROUGH WILL PUSH EAST OF THE REGION THIS MORNING. SURFACE AND UPPER LEVEL HIGH PRESSURE WILL BEGIN BUILDING INTO THE REGION AND REMAIN THROUGH THE WEEKEND. EXPECT DEWPOINTS IN THE LOWER 50S THROUGH THE WEEKEND.
WV imagery indicates a strong closed off upper level low anchored across the Colorado Rockies. Well, our happy upper low continued to spin over Colorado during the overnight hours with the 500mb center not moving since yesterday afternoon. The primary zone will likely remain across central and south central KS through the day with the upper low center remaining stationary over Colorado (if not wobbling slightly west late in the day). Some local areal flooding concerns are still there, but mainly along the highway 183 and 281 corridors. Northwest winds 10 to 15 mph will continue into tonight with temperatures falling to the upper 30s west of Highway 283 to the lower/mid 40s east of this line. We will remain under the influence of this stalled out upper low through mid-week.
A COLD FRONT WILL BEGIN WORKING IT/S WAY SOUTHWARD INTO THE HILL COUNTRY.
359 AM CDT SUN APR 17 2016 The large cut off low centered over CO that brought severe storms and flooding to the eastern part of the area yesterday will slowly wobble NE the next couple of days with weak high pressure building in behind it.
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.
329 AM CDT SUN APR 17 2016 (TODAY THRU TUE) UPPER RIDGING WILL BE IN PLACE OVER THE EASTERN UNITED STATES TODAY. THE RIDGE AXIS WILL CONTINUE TO SERVE AS THE CENTER OF THE OMEGA BLOCK PATTERN.
222 AM CDT SUN APR 17 2016 MUCH OF THE WESTERN AND CENTRAL PANHANDLES WILL BE IN THE DRY SLOT OF THE UPPER LEVEL LOW OVER COLORADO THROUGH MUCH OF MONDAY. A COLD FRONT HAS PUSHED THROUGH THE PANHANDLES EARLY THIS MORNING. THE DRIER AIR WITH THE FRONT SHOULD EAT AWAY AT THE LOW LEVEL MOISTURE THAT WAS HELPING TO FUEL THE SHOWERS AND STORMS.
Well, our happy upper low continued to spin over Colorado during the overnight hours with the 500mb center not moving since yesterday afternoon. The primary zone will likely remain across central and south central KS through the day with the upper low center remaining stationary over Colorado (if not wobbling slightly west late in the day). Some local areal flooding concerns are still there, but mainly along the highway 183 and 281 corridors. Northwest winds 10 to 15 mph will continue into tonight with temperatures falling to the upper 30s west of Highway 283 to the lower/mid 40s east of this line. Precip chances will linger across central Kansas Monday as medium range models indicate the closed off upper level low remaining locked in across the Colorado Rockies.
WITH A PERIOD OF MIXED PRECIPITATION THIS MORNING BEFORE TEMPERATURES WARM ABOVE FREEZING. ESPECIALLY ACROSS THE HIGHER ELEVATION OF THE SOUTHWEST.
AS HIGH PRESSURE SURFACE AND ALOFT STAYS IN CONTROL.
321 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL CONTROL THE WEATHER TODAY WITH MILD 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.
WE HAVE BEEN UNDER THE INFLUENCE OF RIDGING AND A WARM AIR MASS.
334 AM CDT SUN APR 17 2016 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.
414 AM EDT SUN APR 17 2016 PERSISTENT RIDGE OF HIGH PRESSURE WILL MAINTAIN SUNNY AND WARM CONDITIONS THROUGH MONDAY.
431 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL REMAIN OVER THE MID ATLANTIC REGION FOR THE NEXT SEVERAL DAYS. HIGH PRESSURE BOTH SURFACE AND ALOFT WILL REMAIN OVER THE REGION TODAY AND TONIGHT.
347 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL REMAIN CENTERED JUST TO THE NORTH THROUGH THE WEEKEND.
341 AM CDT SUN APR 17 2016 UPPER LEVEL RIDGE EXTENDS FROM THE CENTRAL GULF TO THE GREAT LAKES WHILE UPPER LOW HAS CLOSED OFF OVER THE ROCKIES. THIS RIDGE WILL CONTINUE TO PROVIDE A MORE STABLE ATMOSPHERE THAN LAST WEEK AND THUS MINIMAL CONVECTION OVER THE AREA. UPPER LEVEL RIDGE OVER THE AREA WILL SUPPRESS SOUTH THE FIRST HALF OF THIS WEEK AS THE CUTOFF LOW TO THE WEST GRADUALLY SHIFTS EAST ACROSS THE CENTRAL PLAINS.
159 AM 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. THE RIDGE AXIS MOVES OVER NY/PA TODAY, WITH WARM AIR PUSHING INTO THE REGION.
615 AM CDT SUN APR 17 2016 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.
345 AM 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.
125 AM EDT SUN APR 17 2016 RIDGE OF HIGH PRESSURE WILL MAINTAIN DRY AND WARM WEATHER THROUGH MONDAY. BUT ONLY PROVIDE CLOUDS AND COOLER TEMPERATURES.
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.
A SHORT WAVE TROUGH EJECTING OUT OF THIS SYSTEM WILL TOP THE RIDGE AXIS OVER THE CANADIAN ROCKIES AND THEN DROP SOUTHEAST BETWEEN HUDSONS BAY AND THE GREAT LAKES MONDAY. THIS WILL SERVE AS A KICKER TO THE PERSISTENT TROUGH OVER THE ATLANTIC WHICH IN TURN ALLOWS THE RIDGE AXIS OVER THE EASTERN U.
402 AM EDT SUN APR 17 2016 A STRONG RIDGE OF HIGH PRESSURE WILL CONTINUE TO PROVIDE THE NORTH COUNTRY WITH CLEAR SKIES AND MILD TEMPERATURES TODAY. THE NEXT CHANCE FOR SHOWERS AND COOLER TEMPERATURES ARRIVES ON MONDAY ASSOCIATED WITH A COLD FRONT. TEMPERATURES WILL APPROACH 70 DEGREES IN THE WARMER VALLEYS ON SUNDAY.
837 AM 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.
CLASSIC OMEGA BLOCKING PATTERN DOMINATES THE WX PATTERN FROM THE ROCKY MTNS EWD.
HIGH PRESSURE OVER THE REGION WILL RESULT IN CONTINUED DRY WEATHER CONDITIONS AND WARM TO VERY WARM TEMPERATURES THROUGH MONDAY. THE LATEST RAP40 MODEL ANALYSIS SHOWS A MID/UPPER LEVEL RIDGE AXIS SHIFTING INLAND OVER CALIFORNIA EARLY THIS MORNING.
HIGH PRESSURE WILL CONTINUE TO BUILD OVER CENTRAL AND SOUTHWEST MONTANA. VFR CONDITIONS WITH CLEAR SKIES WILL CONTINUE OVER THE FORECAST AREA THROUGH AT LEAST SUNDAY EVENING DUE TO HIGH PRESSURE ALOFT. AN UPPER LEVEL RIDGE OF HIGH PRESSURE CURRENTLY EXTENDING FROM THE WEST COAST TO THE NE ACROSS THE NORTHERN ROCKIES WILL REMAIN IN PLACE AND GRADUALLY BRIDGE ACROSS THE CANADIAN PRAIRIES OVER THE NEXT SEVERAL DAYS AS AN UPPER LEVEL LOW CURRENTLY CENTERED OVER THE 4-CORNERS REGION BECOMES INCREASINGLY CUT-OFF FROM THE MAIN UPPER LEVEL WESTERLIES. THIS WILL MAINTAIN GENERALLY DRY CONDITIONS ACROSS THE REGION THROUGH THE PERIOD WITH A SLIGHT INCREASE IN CLOUD-COVER FROM THE SE LATE SUNDAY AND MONDAY AS THE CUT-OFF LOW TO OUR SOUTH WOBBLES SLIGHTLY TO THE NORTH.
421 AM CDT SUN APR 17 2016 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.
413 AM EDT SUN APR 17 2016 RIDGE OF HIGH PRESSURE WILL MAINTAIN DRY AND WARM WEATHER THROUGH MONDAY. BUT ONLY PROVIDE CLOUDS AND COOLER TEMPERATURES.
746 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL REMAIN OVER THE MID ATLANTIC REGION FOR THE NEXT SEVERAL DAYS. HIGH PRESSURE BOTH SURFACE AND ALOFT WILL REMAIN OVER THE REGION TODAY AND TONIGHT.
THERE IS STILL ARE LARGE AMPLITUDE TROUGH OFF THE EAST COAST AND OVER THE WESTERN US WITH A LARGE AMPLITUDE RIDGE BETWEEN THE TWO ROUGHLY CENTERED OVER THE MID-SOUTH. THE UPPER RIDGE BREAKS DOWN/WEAKENS WHICH ALLOWS FOR THE UPPER LOW OVER THE ROCKIES TO MOVE EAST.
WITH HIGH TEMPERATURES REACHING INTO THE LOWER 80S UNDER PARTLY CLOUDY SKIES.
THE MAIN CUT OFF UPPER LOW REMAINS WELL TO OUR SOUTH OVER COLORADO AND WILL NOT MOVE TOO MUCH DURING THE NEXT 24 HOURS. AND WITH THE INVERTED TROUGH REMAINING OVER MN THERE WILL BE A CONTINUED CHANCE FOR RAIN JUST A QUESTION OF TIMING AND AMOUNTS. THE UPPER LOW WILL STILL BE WOBBLING OVER THE ROCKIES INTO MONDAY. TEMPS SHOULD BE LESS OF A GRADIENT AS THE NORTH COULD SEE SOME SUN AND RISE INTO THE 50S WHILE THE SOUTH IS STILL UNDER THE WARMER AIR MASS BEHIND THE RETROGRADING FRONT AND IN THE 60S.
AND MONDAY A HIGH PRESSURE RIDGE WILL CONTINUE TO DOMINATE THE REGIONS WEATHER TODAY INTO TONIGHT AND MOST OF MONDAY.
The 8 am EDT regional surface analysis showed an area of high pressure across the Southeast, with east-northeast winds of 10 to 15 KT and relatively low dewpoints across the region.
426 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL REMAIN OVER THE MID ATLANTIC REGION FOR THE NEXT SEVERAL DAYS. HIGH PRESSURE BOTH SURFACE AND ALOFT WILL REMAIN OVER THE REGION TODAY AND TONIGHT.
WITH THE ASSOCIATED UPPER RIDGE STRENGTHENING OVER OUR AREA TODAY THROUGH TONIGHT. WITH THE DEEP LAYER RIDGING INCREASING OVER OUR AREA. HIGHS TODAY RANGING FROM THE LOWER 70S NEAR THE COAST TO THE UPPER 70S OVER NORTHERN INTERIOR COUNTIES.
321 AM 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.
THE UPPER LOW PRESSURE SYSTEM WAS LOCATED OVER COLORADO THIS MORNING. THE UPPER LOW WILL SLOWLY TRACK NORTHWARD TO THE NORTHWESTERN QUAD OF THE STATE. SINCE THE HIGHLIGHTS THIS MORNING HAVE BEEN CANCELLED. LEANED TOWARDS SLIGHTLY COOLER READINGS DUE TO HEAVIER SNOWFALL AMOUNTS FOR SOME AREAS.
OTHERWISE S WINDS AND HIGHS IN THE LOW 70S HAVE BEEN COMMON FAR E. THE UPPER LEVEL LOW OVER N NM/S CO WILL CONTINUE TO IMPACT OUR WX THROUGH AT LEAST SUNDAY NIGHT. AND AT THAT POINT THE OLD UPPER LOW OVER THE INTERMOUNTAIN WEST SHOULD GET KICKED EAST. THIS LOW WILL CONTINUE TO PROVIDE FOR RAIN CHANCES AS IT MOVES JUST SOUTH OF THE AREA THROUGH MID WEEK. THE HIGHEST CONFIDENCE FOR WIDESPREAD RAIN LOOKS TO BE MONDAY INTO MONDAY NIGHT AS A STRONG WAVE TRAVELS AROUND THE EAST AND NORTH SIDE OF THE CUT OFF.
A VORTICITY LOBE AND ASSOCIATED JET STREAK PRESENTLY MOVING THROUGH THE BASAL PORTION OF THE LARGE-SCALE TROUGH ALONG THE U. WHICH COMBINED WITH DRIER AIR FILTERING INTO THE AREA FROM THE WEST WILL SUPPORT COOLER OVERNIGHT LOWS.
and western Atlantic Ocean, and a blocking ridge over the Ohio Valley. This will keep high pressure in control at the surface, resulting in sunny warm days and clear mild nights through Monday night.
AN UPPER LEVEL RIDGE IS DOMINATING ACROSS THE EASTERN CONUS. EASTERN KENTUCKY IS ENJOYING ANOTHER GOOD RIDGE/VALLEY SPLIT. WITH THE COOLER VALLEYS HAVING DROPPED INTO THE LOW 40S. WHILE THE MILDEST RIDGES ARE HOLDING IN THE LOWER 60S. THE RIDGES WILL LIKELY CLOSE THIS GAP SOMEWHAT THROUGH DAWN AS THE INVERSION RAISES WITH TIME. HIGHS TODAY WILL TOP OUT A FEW DEGREES WARMER THAN YESTERDAY. WITH LOWS LIKELY DOWN INTO THE UPPER 30S IN SOME OF THE COOLER VALLEYS ONCE AGAIN THANKS TO THE DRY AIR. RIDGES WILL HOLD IN THE LOWER 50S. MONDAY WILL FEATURE TEMPERATURES SIMILAR TO JUST A TOUCH WARMER COMPARED TO TODAY. THE EXTENDED IS STILL FORECAST TO START OFF QUITE DRY WITH WARMER THAN NORMAL TEMPERATURES.
248 AM EDT SUN APR 17 2016 VERY QUIET WEATHER ON TAP AGAIN FOR TODAY WITH A RIDGE OF HIGH PRESSURE AT THE SURFACE AND ALOFT PROMOTING CLEAR CONDITIONS ACROSS MUCH OF THE EASTERN CONUS. THIS RIDGE /WHICH IS CENTERED OVER THE OHIO VALLEY/. IN TURN RESULTING IN A WARMER DAY ACROSS THE REGION /THANKS AS WELL TO AMPLE SUNSHINE/.
DRY AND MILD CONDITIONS CONTINUE THROUGH MONDAY AS REGION REMAINS BETWEEN A CUTOFF LOW ALONG THE CONTINENTAL DIVIDE AND AN UPPER RIDGE BUILDING ALONG THE CASCADES. CIRCULATION AROUND THE UPPER LOW WILL BRING EASTERLY DOWNSLOPING WINDS TO MUCH OF REGION TODAY AND MONDAY. CLOUDS MAY INCREASE ACROSS CENTRAL IDAHO ZONES ON MONDAY AS MOISTURE WRAPS AROUND THE LOW.
727 AM 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.
930 AM 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.
422 AM EDT SUN APR 17 2016 HIGH PRESSURE REMAINS CENTERED NORTH OF THE REGION THROUGH MONDAY.