Aikyam-Lab/Synoptic-Bench huggingface dataset:
LATEST SATELITE IMAGERY SHOWED AN AMPLIFIDE 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.
This area of precipitation will slowly transition eastward as a lobe of vorticity begins to expand east today, pushing the weakening dryline/cold front to near the OKC-ICT-Salina corridor by this evening.
We are still watching a very slow moving and large upper level low pressure system currently over the Rocky Mountain region today. High temperatures will range from the lower to upper 70s depending on cloud cover.
339 AM CDT SUN APR 17 2016 AN UPPER LEVEL LOW PRESSURE SYSTEM CURRENTLY OVER COLORADO WILL CONTINUE SPREADING SHOWERS INTO THE REGION OVER THE NEXT 48 HOURS.
348 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL REMAIN CENTERED JUST TO THE NORTH THROUGH THE WEEKEND.
626 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.
120 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL KEEP SUNNY SKIES AND WARM SPRING AIR OVER NEW YORK AND PENNSYLVANIA THROUGH THE WEEKEND. A COLD FRONT WILL BRING A CHANCE OF SHOWERS LATE MONDAY INTO MONDAY NIGHT. LITTLE CHANGE THROUGH SUNDAY AS A STRONG RIDGE BOTH AT THE SURFACE AND ALOFT WILL MAINTAIN CLEAR AND DRY WEATHER. LOWS FOR TONIGHT WILL BE IN THE LOW TO MID 40S. THIS SUPPORTS HIGHS REACHING THE LOW 70S FOR MOST AREAS. THE RIDGE REMAINS STRONG OVER THE AREA THROUGH SUNDAY NIGHT BEFORE WEAKENING BY LATE MONDAY AS A COLD FRONT APPROACHES FROM THE NORTH. HIGHS MONDAY WILL ONCE AGAIN BE IN THE LOW 70S FOR MOST AREAS.
THE UPPER LOW WILL MOVE INTO COLORADO TONIGHT AND NUDGE TOWARD SOUTHERN WYOMING SUNDAY. FORECAST SOUNDINGS IN THE AREA INDICATE THE DRY LAYER AND A CHANCE FOR LIGHT FREEZING DRIZZLE. MIN TEMPERATURES TONIGHT WILL RANGE FROM THE LOWER 30S IN THE FAR WEST FA TO THE UPPER 40S IN THE EAST. MAX TEMPERATURES SUNDAY WILL RANGE FROM THE LOWER 40S IN THE WESTERN FA TO THE MID 50S IN THE EAST.
642 AM CDT SUN APR 17 2016 AN UPPER LEVEL LOW PRESSURE SYSTEM CURRENTLY OVER COLORADO WILL CONTINUE SPREADING SHOWERS INTO THE REGION OVER THE NEXT 48 HOURS.
614 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. WITH HIGH PRESSURE IN PLACE ACROSS THE REGION. WILL THEREFORE CONTINUE TO TREND A LITTLE WARMER THAN GUIDANCE FOR HIGHS TODAY.
RIDGETOP FLOW WILL NOT BE AS GUSTY AS LAST NIGHT, BUT WILL REMAIN A BIT HIGHER THAN VALLEYS.
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.
327 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.
(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.
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.
425 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.
HIGH PRESSURE ALOFT WILL PROVIDE DRY, VERY WARM CONDITIONS OVER MUCH OF THE CWA BOTH TODAY AND MONDAY. A SURFACE THERMAL TROUGH ALONG THE COAST TODAY WILL MOVE NORTH AND SHIFT INLAND MONDAY. SOME PLACES WILL HAVE HIGHS IN THE LOWER 90S, ESPECIALLY THE LOWER KLAMATH RIVER VALLEY NEAR HAPPY CAMP AND SOMES BAR. AREAS EAST OF THE CASCADES IN OREGON AND IN NORTHEAST CALIFORNIA WILL HAVE HIGHS IN THE LOW TO MID 70S. SEE TABLE BELOW FOR CURRENT RECORD INFORMATION: 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) IT SHOULD BE NOTED THAT OFFSHORE FLOW HAS BEEN MODERATE OVERNIGHT FROM THE CASCADES WESTWARD AND THIS PROVIDED MID SLOPE AND RIDGE LEVEL DRYING.
515 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.
THE REMNANTS OF A COLD FRONT BOUNDARY REMAIN ACROSS SOUTHERN FLORIDA WITH HIGH PRESSURE AND INCREASING E/NE FLOW ESTABLISHING IN THE WAKE OF THE FRONT. SUBSIDENCE SHOULD BRING A COOLER AND DRIER AIR MASS ACROSS THE REGION, BUT A FEW MORE SHOWERS CAN NOT BE RULED OUT EACH AFTERNOON, MAINLY OVER THE ATLANTIC SIDE OF THE CWA. WARMER MID LEVEL TEMPERATURES SHOULD ALSO HELP IN MINIMIZING CONVECTION.
145 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.
PATTERN HAS BEEN IN BLOCKING MODE FOR A WHILE NOW AND SHOULD REMAIN SO TODAY. ANOTHER TROUGH OFF THE EAST COAST AND UPPER LEVEL RIDGING IN BETWEEN. WESTERN SYSTEM WILL CONTINUE TO MAKE VERY SLOW HEADWAY AGAINST THE UPPER RIDGE AND ACTUALITY RETROGRADES SLIGHTLY BY MONDAY AFTERNOON. THE SYSTEM DOES WEAKEN SOMEWHAT AND STARTS TO BREAK DOWN THE RIDGE SOMEWHAT WITH TIME BUT A STRONG IMPULSE WILL KICK OUT THIS AFTERNOON WITH SMALL RAIN CHANCES FOR THE WEST.
351 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. WITH HIGH PRESSURE IN PLACE ACROSS THE REGION. WILL THEREFORE CONTINUE TO TREND A LITTLE WARMER THAN GUIDANCE FOR HIGHS TODAY.
709 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.
CLOSED LOW OVER COLORADO WILL IMPINGE SLIGHTLY FURTHER ON THE EASTERN CONUS OMEGA BLOCK TODAY. GIVEN THAT DEWPOINTS FELL INTO THE LOWER 40S WITH AFTERNOON MIXING YESTERDAY.
234 AM PDT SUN APR 17 2016 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. SATELLITE IMAGERY SHOWS A LARGE AREA OF HIGH PRESSURE CENTERED ABOUT 300 MILES WEST OF THE CALIFORNIA COAST AND EDGING SLOWLY EAST. HEIGHTS RISE TO AROUND 5820 METERS AT THE 500 MILLIBAR PRESSURE LEVEL AND THIS WILL ALLOW FOR WELL ABOVE TEMPERATURES BOTH TODAY AND ESPECIALLY MONDAY WHERE SOME 90S ARE LIKELY IN THE LOWER ELEVATIONS.
157 AM EDT SUN APR 17 2016 STRONG AND PERSISTENT HIGH PRESSURE OVER THE NORTHEAST AND GREAT LAKES WILL PROVIDE ANOTHER SUNNY AND WARM DAY ON SUNDAY. THE NEXT WHEN A COLD FRONT WILL CROSS THE REGION ALONG WITH A FEW SHOWERS.
A LARGE BLOCKING RIDGE ALOFT WILL HOLD IN PLACE OVER THE EASTERN HALF OF THE CONUS TODAY AND MONDAY. WITH STRONG HIGH PRESSURE AT BOTH THE SURFACE AND ALOFT.
HIGH PRESSURE WILL REPLACE THE STORM BY THE MIDDLE OF THE WEEK.
A SEPARATE HIGH-AMPLITUDE RIDGE IS BUILDING NORTHWARD INTO THE LOWER MISSISSIPPI VALLEY FROM THE WESTERN GULF OF MEXICO -- DOWNSTREAM FROM DEVELOPING CUTOFF UPPER LOW OVER CENTRAL COLORADO. WITH THE CUTOFF UPPER LOW FORECAST TO REMAIN IN THE GENERAL VICINITY OF EASTERN UT/WESTERN CO/SOUTHERN WY. TO THE EAST OF THE UPPER LOW. AND WILL REACH THE LOWER/MID 70S FOR PORTIONS OF NE ALABAMA THE CUMBERLAND PLATEAU IN SOUTHERN TN. AS THE SURFACE PRESSURE GRADIENT WILL REMAIN SUFFICIENTLY STEEP WITH A BROAD RIDGE ACROSS NEW ENGLAND STILL APPROACHING FROM THE NORTHEAST. AND ALTHOUGH ELEVATED SE FLOW HAS MAINTAINED TEMPS IN THE M/U 50S THIS MORNING, LOWS ON MONDAY MORNING SHOULD BE SEVERAL DEGREES COOLER IN MORE FAVORABLE RADIATIONAL COOLING REGIME. WITH HIGHS EXPECTED TO BE EVEN A FEW DEGREES WARMER AS MOST LOCATIONS SHOULD REACH THE UPPER 70S/LOWER 80S.
704 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.
359 AM MDT SUN APR 17 2016 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.
The stretch of pleasant spring weather continues today, thanks to high pressure building over the Northern Rockies. A strong low pressure system will begin to approach the Pacific Northwest by mid week this week.
627 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.
/issued 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.
606 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.
WITH MOSTLY SUNNY SKIES THIS AFTERNOON TEMPERATURES WILL REACH THE LOWER TO MID 70S. LOW TEMPERATURES TONIGHT WILL BE COOLER DUE TO THE DRIER AIR WITH READINGS RANGING FROM THE MID/UPPER 40S OVER INTERIOR SE GA TO THE LOWER 60S NEAR THE NE FL COAST. HIGH PRESSURE BUILDS OVER THE REGION FROM THE NORTHWEST WITH SUNNY SKIES AND PLEASANT MID APRIL TEMPS.
152 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 ON SUNDAY. 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.
935 AM EDT SUN APR 17 2016 HIGH PRESSURE WILL REMAIN CENTERED JUST TO THE NORTH THROUGH THE WEEKEND.
1107 PM MDT SAT APR 16 2016 THE AREA OF LOW PRESSURE THAT WE'VE BEEN TRACKING HAS DROPPED QUITE A BIT FURTHER SOUTH THAN ORIGINALLY FORECAST BUT THE END RESULT STILL REMAINS THE SAME. MODELS INDICATE THE CENTER OF LOW PRESSURE SHIFTING TO THE NORTH WHICH WILL ALLOW SNOWFALL TO PICK UP AGAIN FROM NOON ONWARDS. THE LOW PRESSURE STILL REMAINS CUTOFF AS PIECES OF ENERGY ROTATE AROUND SAID LOW BUT WITHOUT ANY KICKER UPSTREAM. THE LOW PRESSURE REMAINS A NUISANCE FOR OUR AREA AS IT CONTINUES TO AFFECT THE CWA. THE UPPER LOW WILL SHIFTED TO THE CENTRAL WYOMING/COLORADO BORDER WITH PRECIP CONTINUING. THE POSITION OF THE LOW WILL ALLOW SOUTHWEST WINDS TO DEVELOP FOR OUR SOUTHERN VALLEYS SO AN UPTICK IN SNOWFALL CAN BE EXPECTED OVER THE SAN JUANS.
HIGH PRESSURE WILL MAINTAIN WARM AND SUNNY WEATHER CONDTIONS THROUGH MONDAY. WE ARE EXPECTING ADDITIONAL WARMING TODAY AS THE THERMAL TROUGH PUSHES OFFSHORE. THOUGH COASTAL AREAS WILL SEE COOLING AS THE THERMAL TROUGH SHIFTS INLAND. CONFIDENCE THERE WILL BE ANY SIGNIFICANT STRATUS OR FOG ON MONDAY REMAINS LOW WITH THE HIGH RESOLUTION MODELS INDICATING DRY BOUNDARY LAYER CONDITIONS. SUBSTSAINTAIL CLOUD COVER AND GREATER COOLING WILL HOLD OFF TIL TUE WHEN AN UPPER TROUGH APPROACHES FROM THE SW. MODELS INDICATE MARGINAL INSTABILITY DEVELOPING IN THE AFTERNOON AS THE TROUGH SWINGS THROUGH BY TUE EVENING. ADDED A SLIGHT CHANCE OF TSTMS OVER SOUTH FORK MOUNTAIN AND THE HIGHER ELEVATIONS OF EASTERN DEL NORTE COUNTY. CONFIDENCE IS HIGH THAT WE WILL SEE SIGNIFICANT COOLING AND A DAY OR TWO OF WET WEATHER TROUGHOUT THE FORECAST AREA.
1206 AM CDT SUN APR 17 2016 The closed upper low near the Four Corners region will be the main story through the next 5 days as it ever-so-slowly drifts and meanders eastward. Tonight into much of Sunday will remain dry as the upper low influence remains just to the west. The frontal boundary is expected to remain across portions of the area through mid-week as the upper low moves eastward.
555 AM EDT SUN APR 17 2016 PERSISTENT RIDGE OF HIGH PRESSURE WILL MAINTAIN SUNNY AND WARM CONDITIONS THROUGH MONDAY.
124 AM EDT SUN APR 17 2016 WARM AND DRY CONDITIONS WILL PERSIST THROUGH THE REMAINDER OF THE WEEKEND DUE TO LITTLE MOVEMENT OF A RIDGE OF HIGH PRESSURE ACROSS THE EASTERN UNITED STATES.
A DEEP AND SHARP TROUGH IS ANALYZED OVER THE INTER-MOUNTAIN WEST. ANCHORED BY A CLOSED UPPER LOW JUST EAST OF THE FOUR CORNERS REGION. UPPER LEVEL WAVES OF ENERGY ROUNDING THIS CLOSED LOW WILL RESULT IN SEVERAL ROUNDS OF HEAVY RAINFALL AND POTENTIAL FLOODING ACROSS THE SOUTHERN/CENTRAL PLAINS THE NEXT 48 HOURS. FURTHER DOWNSTREAM THE FLOW RIDGES RAPIDLY TO THE NORTH UP INTO SOUTHERN CANADA BEFORE DIVING BACK SOUTH INTO THE OTHER CLOSED LOW FORMING THE EASTERN SIDE OF THE OMEGA BLOCK SITUATED OVER THE WESTERN ATLANTIC. AND THIS KEPT THE LOW LEVEL CONVERGENCE AGAINST THE STEADY NORTHEAST FLOW TO A MINIMUM.
MAIN H5 TROUGH HAS ENTRENCHED ITSELF ACROSS THE SOUTHERN ROCKIES THIS MORNING.
PREVIOUS DISCUSSIONS HAVE OUTLINED THE EXPECTED TRACK OF THE UPPER LOW OVER THE SOUTHERN ROCKIES WHICH IS EXPECTED TO SLOWLY DRIFT NORTH FROM COLORADO INTO WYOMING THE NEXT COUPLE OF DAYS.
This late afternoon/evening timing locally will leave southeast Michigan within a moderating pre-frontal environment for a good portion of the daylight period, as a prevailing low level southwest gradient works the ongoing weak mid level warm air advection down through the lowest levels. Highs of lower to middle 60s, just a touch cooler in the thumb /upper 50s/. Defined cold front marking the edge of the inbound height falls enters the Tri-Cities as early as mid afternoon, before sweeping southeast in conjunction with the mid level feature through the evening period. Early week period defined as cool and dry, conditions dictated by gradually expanding high pressure tucked beneath confluent mid level northwest flow. Deep column northwesterly flow for Monday, ongoing cold air advection shifting 850 mb temperatures below freezing by mid morning.
1035 AM CDT Sun Oct 23 2016 Increasing cirrus shield wrapping around topside of upper ridger over northern gulf. 10 am temps mainly in the lower 60s should warm around 15 degrees, yielding highs around the upper 70s to possibly near 80. Palmer WV imagery shows the upper ridge gaining ground on the srn CONUS this morning in the wake of the departing trof over the E Coast. Weak disturbance moving around the wrn periphery of the ridge bringing some cirrus to our region, and this will continue throughout today and into Tue.
High pressure. Chattanooga Airport, TN 75 49 78 49 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 71 48 75 45 / 0 0 0 0 Oak Ridge, TN 72 47 75 45 / 0 0 0 0 Tri Cities Airport, TN 67 41 71 39 / 0 0 0 0.
Broad low pressure is moving east across the northern Plains. Aloft, a deep upper level low is pulling north across northern New England, with a short wave trough skirting the U. Broad ridging is controlling across the lower and middle Mississippi Valley. A cold front will approach from the northwest tonight, before moving through our area by Monday morning. High pressure will then build in from the northwest. Tonight will be milder with the approach of the cold front; however, still expect some of the eastern valleys to reach the lower 40s, while ridges stay about 10 degrees warmer.
905 AM MDT Sun Oct 23 2016 Quiet weather today as broad ridge over the southern and central Rockies builds northward. High pressure ridging will begin to build once again today across the forecast area continuing through Monday.
There were some colder areas with patchy frost, including a couple of spots that touched freezing on the Plateau. An axis of high pressure was located over our eastern counties early this morning, and allowed maximum cooling. Since then, the ridge axis has moved to east TN. The southwest wind with sunny skies will help warm temps into the low to mid 70s today. This means we'll start to pick up some return flow and warmer temperatures today.
High pressure ridge settles over southeast US today and Monday with a light to moderate onshore flow redeveloping across South Texas.
908 AM EDT Sun Oct 23 2016 Strong low pressure system will part to the north, bringing an end to rain and snow showers today. Some lingering snow showers over the higher terrain could persist into this afternoon.
A cold front will pass through tonight and Monday bringing a chance of showers to the north and a reinforcing shot of cold air that will last through mid week.
H5 s/w trough currently across the Brush Country will continue to move NE through the day bringing another round of cloud cover to much of the CWA.
and deep low pressure over eastern Quebec today and tonight. A clipper system will cross the Mid Atlantic region Monday morning, followed by high pressure for mid-week. Low pressure will approach from the west late in the week. There will be some low level moisture advection that will increase dewpoints, so min temps will be from the low 40s at higher elevations and sheltered valleys to near 50 in the urban corridors to the Chesapeake. On Monday, the clipper's cold front will cross the forecast area with additional cold air advection.
High pressure centered across the lower MS Valley will extend eastward across the Southeast U.
High pressure centered over AL will gradually shift east to over GA through Monday with generally clear skies. High pressure will dominate the state with VFR conditions and a light NW becoming WSW by late this afternoon and tonight.
Cold front will move through the region tonight with little fanfare. Behind the front winds will shift to the north allowing cooler (more seasonable) temps to filter into the region to kick off the work week, but still with abundant sunshine.
930 AM PDT Sun Oct 23 2016 A trough of low pressure will move through the region through Monday and bring up moisture from the south.
XMR profiler and RAOB data show winds above the surface in the lowest 1-3KM have veered to NNE, with a stout subsidence cap around H85, as had been forecast.
1005 AM EDT SUN OCT 23 2016 High pressure will continue to build over the SE US today and tonight. This high will weaken as shift south of the area on Monday, in advance of a dry cold front moving through the area Monday evening. Modest CAA Monday evening/night on the leading edge of Canadian high pressure building into the area from the NW will support lows in the lower 40s north to mid/upper 40s south.
727 AM EDT SUN OCT 23 2016 High pressure will continue to build over the SE US today and tonight. This high will weaken as shift south of the area on Monday, in advance of a dry cold front moving through the area Monday evening. In the wake of the upper low lifting northeast into eastern Canada, rising heights aloft and associated strong subsidence warming will allow for wall-to-wall sunshine. Modest CAA Monday evening/night on the leading edge of Canadian high pressure building into the area from the NW will support lows in the lower 40s north to mid/upper 40s south.
700 AM CDT SUN OCT 23 2016 Breezy and unseasonably warm conditions are expected across central and southeast Illinois today in advance of a cold front. Cooler temperatures, but more normal for late October, will filter across the area tonight behind the front.
720 AM EDT Sun Oct 23 2016 The day will start with high pressure overhead. but low pressure across the Upper Midwest will dive southeast to northeast OH/nw PA by this evening. High pressure will shift east across southern Canada.
This builds a ridge east over the Gulf of Mexico, bringing increasing subsidence into the forecast.
Accompanying the cooler air during the day today will be stratus currently across much of northern and central ND.
This pattern will also lead to a gradual moderating trend with high temperatures today climbing into the upper 70s to around 80 and then mostly into the lower 80s on Monday. Lows tonight will remain relatively cool, but not quite as cool as this morning, and range from the mid 40s far north to the lower 60s near the coast from around Tampa Bay southward.
604 AM CDT Sun Oct 23 2016 A cold front will swing east of our area by mid morning, leading to a cooler and breezy day. Under mostly sunny skies highs will range from the upper 50s through the Highway 14 corridor, to the mid 60s through the lower Missouri River Valley into our lower northwest Iowa zones. An upper ridge of high pressure is situated west of the forecast area, with a mild southeast flow of air in this forecast area. Therefore mixed in some raw model values which were substantially warmer, especially the non bias corrected temperatures.
910 AM PDT Sun Oct 23 2016 Cooler with periods of wet weather as a couple of systems will bring chances of rain and high elevation snow this week. A trough of low pressure remains off the west coast today and will continue to spread some high clouds over the area. The interior will stay dry but temperatures will be a little cooler today then yesterday. Locally windy conditions are still possible over the far north end of the valley and over the ridgetops.
1158 AM EDT Sun Oct 23 2016 A ridge of high pressure centered to the south will keep dry weather over the region today, but an approaching cold front from the north will bring some gusty winds. The cold front will drop through the region tonight, but will only bring some clouds.
629 AM CDT SUN OCT 23 2016 The low level jet we have seen overnight, causing LLWS at all three terminals, looks to hold on for just a couple more hours as we go through sunrise. The other feature of interest will be a cold front that stalls out just as it enters our forecast area this afternoon. For the extreme southwestern TX Panhandle, this means shaving a few degrees off the highs today. Upper level ridging will persist through much of the week and will continue to result in warm and dry conditions with both low and high temperatures generally running above to well above seasonal norms.