Aikyam-Lab/Synoptic-Bench huggingface dataset:
Surface dewpoints have increased over the past couple of hours associated with the higher cloud cover. Additionally adjusted wind speed/direction for this afternoon as the high pressure center moves farther east. Chattanooga Airport, TN 71 60 81 61 / 10 30 40 40 Knoxville McGhee Tyson Airport, TN 68 57 78 59 / 10 30 50 50 Oak Ridge, TN 69 56 78 59 / 10 40 50 50 Tri Cities Airport, TN 67 53 73 56 / 10 50 70 60.
601 AM CDT MON MAY 16 2016 On balance, slightly cooler than normal temperatures this week, with at least a slight chance of rain over a part of the Midsouth each day. Subtropical midlevel moisture extended into eastern TX and the lower MS river valley, ahead of an upper low over northern Mexico. By early Tuesday, 60s dewpoints will return to the I-40 corridor, pooling along a developing cold front. The cold front will drop through the Midsouth Tuesday night, in response to midlevel height falls over Ohio Valley and perhaps aided by a convective outflow.
High temperatures were adjusted up a bit into the lower to mid 80s in those southern locations.
758 AM EDT MON MAY 16 2016 High pressure over the Carolinas should move offshore later today.
1129 AM EDT MON MAY 16 2016 Update/Marine Another cold front dropping south from Canada will bring scattered showers and isolated thunderstorms this afternoon and tonight. High pressure will build in on Tuesday and will be over the region the rest of the week. Still expecting an increase in coverage of the pcpn into mid/late afternoon as a cold front moves into the area. Guidance shows a rather pronounced h8 thermal ridge of 6C nosing in by 18z, sinking slowly south with time this afternoon and tonight. Better risk of frost exists Tuesday night as the high builds in.
1127 AM EDT MON MAY 16 2016 Cool and dry Canadian high pressure builds into the Mid Atlantic region this morning, before sliding offshore by late afternoon.
457 AM PDT MON MAY 16 2016 Scattered showers will linger over the southern Idaho Panhandle Monday before high pressure brings a dry and warm day to the entire region Tuesday.
/issued 334 AM EDT MON MAY 16 2016/ The short term period begins with a strong high pressure system for this time of year anchored over the Ohio valley with ridging southward through the lower Mississippi valley.
717 AM EDT MON MAY 16 2016 High pressure over the upper Ohio Valley will move off the mid Atlantic coast today. This will allow a weak cold front to push south across the forecast area Tuesday.
Cold front in central Minnesota is quite weak, and short term models do bring it to far southern Minnesota during mid afternoon. The storm track is such that the upper Midwest will have high pressure and light winds, while the southeastern US has storms and precipitation. An upper level low will intensify over the west coast over the middle of the week. This will lead to ridging downstream over the center of the country. Mid level clouds associated with front and upper trough is progged to drop south over the area as well. Band of mid clouds moving through associated with front/upper trough.
1110 AM EDT MON MAY 16 2016 High pressure will provide dry and sunny conditions today. The upper ridge over the Great Lakes is progged to flatten and set up a surface boundary across the Mid-Atlantic tonight. Meanwhile across the north, a weak cold front is expected to sag southward as the ridge flattens. Expect temperatures to be cooler than average tonight but much warmer than last night due to warm advection and increasing clouds.
H70-H50 winds will freshen out of the SW as the two ridges become one. Will introduce slgt chc of shras from S Osceola/S Brevard counties Swd to coincide with the highest moisture/strongest isentropic lift.
This low level forcing shifts east as the morning wears on. High pressure then builds in from the northwest Tuesday. Both models moving toward a more amplified upper level ridge compared to a few days ago. bringing this stronger ridge axis over the region toward the end of the weekend. VFR conditions look to continue thru today/tonight, even as a cold front drops south across the area. Canadian high pressure then builds in behind the front with light north/northeast winds and SKC most of tonight into Tue morning.
/Issued 312 AM PDT MON MAY 16 2016/ Low pressure over the Great Basin will maintain cooler conditions and a chance of showers and thunderstorms into Tuesday. Another round of showers and thunderstorms are expected in the region today as low pressure over the Great Basin slowly moves eastward. Storms are also expected to form along the Sierra crest in Mono County but will most likely stay in the high Sierra, eventually moving to the west slope.
Cold front in central Minnesota is quite weak, and short term models do bring it to far southern Minnesota during mid afternoon. The storm track is such that the upper Midwest will have high pressure and light winds, while the southeastern US has storms and precipitation. An upper level low will intensify over the west coast over the middle of the week. This will lead to ridging downstream over the center of the country. Otherwise, no significant weather with clearing later today and light ne winds tonight as high pressure ridge extends across northern mn.
/issued 508 AM CDT MON MAY 16 2016/ The combination of an anomalous upper level trough over the northeast CONUS and an active subtropical stream is resulting in a split upper level pattern that is favorable for an active baroclinic zone and wet weather over the ArkLaMiss.
823 AM EDT MON MAY 16 2016 High pressure will build over the region today.
upper trough approaching Texas coast at this time, and will keep precip a bit longer. As upper trough moves further east PoPs will decrease west to east today. PWAT values will increase during the day Tuesday and disturbances coming off upper low will lead to isolated to scattered showers and thunderstorms during the day on Tuesday. Temperatures will be warmer today and Tuesday, though timing of rain ending today could throw max values off.
939 AM MDT MON MAY 16 2016 Upper low remains anchored over southwest Idaho. At this same time, an upper ridge is pinching into northern Montana from Canada. The upper low is progged to slide slowly southeast through the day. Water vapor imagery shows broad upper low over the intermountain west with an upper ridge centered just to our north over southern Alberta.
750 AM EDT MON MAY 16 2016 Aviation Another cold front dropping south from Canada will bring scattered showers and isolated thunderstorms this afternoon and tonight. High pressure will build in on Tuesday and will be over the region the rest of the week. Guidance shows a rather pronounced h8 thermal ridge of 6C nosing in by 18z, sinking slowly south with time this afternoon and tonight. Better risk of frost exists Tuesday night as the high builds in.
848 AM EDT MON MAY 16 2016 High pressure will move across the region today, providing dry weather and cool temperatures. A low pressure system will move into the region tonight into Tuesday, bringing rain showers to the area. Temperatures have risen into the lower 40s this morning and therefore the frost advisory and freeze warning has been cancelled. Prev Discussion-> Northwest flow aloft has develop across the Ohio valley in between departing upper low over New England and next trof over southern Canada. Temperatures will be a ltl warmer than yda but will still be around 10 degrees below normal, with highs generally in the lower and middle 60s. Favorable lift will push off to the east Tuesday night with inverted trof as aforementioned upper level trof settles into the Great Lakes.
1054 AM EDT MON MAY 16 2016 High pressure over the eastern U.
Upper low directly over our CWA this morning will drift to nern Nevada this evening, and to srn Nevada Tuesday. Moisture and instability near the low will develop showers and isolated thunderstorms again this afternoon, especially in the mountains on the Idaho side.
Light rain showers are overspreading the area early this morning, north of a warm frontal zone which is taking shape across the southern Plains. Rainfall has been rather light so far given a decent layer of dry air in the low levels, but coverage/intensity should gradually increase through the day. Severe weather potential with this MCS is very much up in the air, as it will depend on where exactly the surface warm front sets up.
628 AM CDT MON MAY 16 2016 The main focus for the short term is the cold front currently dropping south across eastern North Dakota and northern Minnesota. Behind the cold front, the area will see Canadian high pressure moving over the area and remaining through Tuesday. Skies will quickly clear this evening and with light winds and pwat values falling to around a quarter of an inch, have trended the lows tonight towards the MET/MAV guidance.
507 AM PDT MON MAY 16 2016 Low pressure aloft will continue a deep marine layer with extensive night and morning low clouds, fog, and patchy drizzle through Tuesday.
/issued 357 AM CDT MON MAY 16 2016/ On balance, slightly cooler than normal temperatures this week, with at least a slight chance of rain over a part of the Midsouth each day. Subtropical midlevel moisture extended into eastern TX and the lower MS river valley, ahead of an upper low over northern Mexico. By early Tuesday, 60s dewpoints will return to the I-40 corridor, pooling along a developing cold front. The cold front will drop through the Midsouth Tuesday night, in response to midlevel height falls over Ohio Valley and perhaps aided by a convective outflow.
A cool moist upper low will persist across the area through the first half of the week.
836 AM EDT MON MAY 16 2016 High pressure over the upper Ohio Valley will move off the mid Atlantic coast today. This will allow a weak cold front to push south across the forecast area Tuesday.
12z NAM solution makes sense, with initiation over the higher terrain of SE Colorado/NW of Boise City, with thunderstorms spreading into far SW Kansas through this evening. Precip chances increase today as an upper level trough of low pressure sinks slowly southward across the Great Basin setting up an increasingly divergent flow aloft across the Western High Plains. As this occurs, a frontal boundary is projected to develop attendant to the low, extending eastward generally across southwest and south central Kansas, providing ample lift across the region. Look for lows back down into the 40s(F) tonight as colder air filters southward into western Kansas behind a departing cold front.
The onshore flow should re-establish itself within the next couple of hours as the low moves away.
The main focus for the short term is the cold front currently dropping south across eastern North Dakota and northern Minnesota. Behind the cold front, the area will see Canadian high pressure moving over the area and remaining through Tuesday. Skies will quickly clear this evening and with light winds and pwat values falling to around a quarter of an inch, have trended the lows tonight towards the MET/MAV guidance.
726 AM EDT MON MAY 16 2016 An upper low north of Pennsylvania will lift northward away from PA today.
936 AM EDT MON MAY 16 2016 High pressure slides through this morning. Moisture increases later today north of a warm front.
1226 PM EDT MON MAY 16 2016 High pressure will build over the region today.
441 AM PDT MON MAY 16 2016 Seasonably cool conditions will continue early this week as low pressure moves through the Great Basin, bringing a slight chance of thunderstorms for the mountains and desert on Tuesday.
945 AM MDT MON MAY 16 2016 Updated forecast to diminish possibility and coverage of precipitation across the forecast area this morning as the initial short wave trough lifts out of the forecast area. Precipitation ramps up again this afternoon as the next short wave trough lifts out of the low over the southwest U.
A mesosystem, which moved out of the high plains overnight, continues to track across northern OK this late this morning. Also lowered PoPs slightly for this afternoon south of I40 as the warm front continues to lift northward.
Low confidence on wind shift timing, but a cold front should bring gusty northerly winds and a return to MVFR or IFR ceilings by 02Z at KGUY and KDHT and by 04Z to KAMA. Cold front overtakes dryline tonight, providing an additional convergence zone for thunderstorms. Much cooler area-wide on Tuesday as cool moist northeast winds continue under a cloudy sky with isolated rain showers.
Snow accumulation level on roads as of 9am looks to be above 10,000 ft at the high passes, so have refrained from issuing any advisories today with impacts minimal. Energy rotating around an upper level low located over southern Idaho will continue to bring showers and thunderstorms to much of eastern Utah and western Colorado through Tuesday. As the low drops or sags south into Utah, colder air will slide south with it. Overall a very similar weather day is expected with showers and thunderstorms throughout the region and some accumulating snowfall for the highest peaks.
911 AM EDT MON MAY 16 2016 High pressure will remain over the area through Monday night. Low pressure will track across southern Virginia Tuesday.
Overall thunder chances will kept on the low side as was with previous forecast.
Temperatures will range from the lower 80s coast to near 90 degrees over western zones. Light ne winds will become east at 10 to 15 knots this afternoon as inverted trough weakens and high pressure builds to the north.
Surface analysis indicates retreating warm front currently north of the region with most locations experiencing east to southeast winds with sufficient moisture recovery suggested by depwoints in the low to mid 60s south of interstate 20.
1026 AM EDT MON MAY 16 2016 High pressure will move across the region today, providing dry weather and cool temperatures. A low pressure system will move into the region tonight into Tuesday, bringing rain showers to the area. Prev Discussion-> Northwest flow aloft has develop across the Ohio valley in between departing upper low over New England and next trof over southern Canada. Temperatures will be a ltl warmer than yda but will still be around 10 degrees below normal, with highs generally in the lower and middle 60s. Favorable lift will push off to the east Tuesday night with inverted trof as aforementioned upper level trof settles into the Great Lakes.
AN EXPANSIVE CONTINENTAL HIGH PRESSURE AREA WILL MOVE GRADUALLY FROM THE CENTRAL UNITED STATES TO THE WESTERN NORTH ATLANTIC.
907 AM EDT SUN APR 24 2016 HIGH PRESSURE WILL BUILD OVERHEAD THIS AFTERNOON BEFORE MOVING OFF THE COAST TONIGHT AND MONDAY.
655 AM CDT SUN APR 24 2016 THE 06-10 UTC HIGH RESOLUTION SUITES HAVE CONSISTENTLY SHIFTED THE AXIS OF HEAVIEST RAINFALL FURTHER NORTHERN INTO THE HIGHWAY 200 AND US HIGHWAY 2 CORRIDORS. ACROSS FAR NORTHERN NORTH DAKOTA THERE MAY BE A BRIEF TRANSITION FROM RAIN TO FREEZING RAIN OR SNOW AS TEMPERATURES FALL BELOW CRITICAL THRESHOLDS. WITH THE TURTLE MOUNTAINS PINPOINTED FOR THE HIGHEST SUSTAINED WINDS OF AROUND 30 MPH AND GUSTS TO 45 MPH.
938 AM EDT SUN APR 24 2016 A RIDGE OF HIGH PRESSURE OVER THE UPPER OHIO VALLEY WILL SHIFT TO THE EAST COAST TONIGHT. A WARM FRONT WILL LIFT NORTH ACROSS THE AREA TODAY AND THEN BECOME STATIONARY NORTH OF LAKE ERIE ON MONDAY.
1037 AM EDT SUN APR 24 2016 A LARGE AREA OF HIGH PRESSURE WILL REMAIN OVER THE REGION TODAY. CLOUDS AND PRECIPITATION CHANCES WILL BE ON THE INCREASE VERY LATE TONIGHT AND MONDAY AS A TROUGH OF LOW PRESSURE MOVES INTO THE REGION.
941 AM EDT SUN APR 24 2016 HIGH PRESSURE BUILDS SOUTH ACROSS THROUGH TONIGHT.
LATEST WATER VAPOR IMAGERY LOOP SHOWS THE DRY SLOT FROM PREVIOUS DISCUSSION HAS WRAPPED TOTALLY AROUND THE VERTICALLY STACKED MID/UPPER LOW. THE 06-10 UTC HIGH RESOLUTION SUITES HAVE CONSISTENTLY SHIFTED THE AXIS OF HEAVIEST RAINFALL FURTHER NORTHERN INTO THE HIGHWAY 200 AND US HIGHWAY 2 CORRIDORS. ACROSS FAR NORTHERN NORTH DAKOTA THERE MAY BE A BRIEF TRANSITION FROM RAIN TO FREEZING RAIN OR SNOW AS TEMPERATURES FALL BELOW CRITICAL THRESHOLDS. WITH THE TURTLE MOUNTAINS PINPOINTED FOR THE HIGHEST SUSTAINED WINDS OF AROUND 30 MPH AND GUSTS TO 45 MPH.
TODAY AND TONIGHT FAIR WEATHER WILL CONTINUE TODAY WITH AN UPPER-LEVEL RIDGE IN PLACE ACROSS THE REGION. A WARM AFTERNOON IS EXPECTED WITH HIGHS IN THE LOW TO MID 80S.
Deep layer high pressure will keep the weather dry and warm today across the tri-state area.
HIGH PRESSURE WILL BUILD IN ACROSS THE MID ATLANTIC REGION TODAY WHICH WILL INCREASE THE ONSHORE FLOW AND KEEP THE WEST COAST SEABREEZE PINNED NEAR THE GULF COAST. HIGH PRESSURE WILL BUILD NORTH OF THE REGION.
Moist southerly flow ahead of the trough will bring low 60s dewpoints into central Kansas this afternoon. With strong afternoon heating, the atmosphere along and east of the trough will see significant destabilization with CAPE values around 2000-2500 j/kg. The threat for severe storms along the Highway 281 corridor will diminish fairly rapidly by early evening. A weak cold front will push into western and central Kansas later tonight.
1211 PM EDT SUN APR 24 2016 HIGH PRESSURE BUILDS OVER THIS AFTERNOON.
HIGH PRESSURE STRETCHING FROM THE GREAT LAKES THROUGH THE APPALACHIANS WILL KEEP DRY AND SUNNY WEATHER IN THE OFFING FOR THE END OF THE WEEKEND. CENTER OF UPPER RIDGING WILL ALSO SLIDE OVERHEAD. RESULTING IN A MODEST RIDGE/VALLEY TEMPERATURE SPLIT WITH LOWS REACHING THE UPPER 40S IN VALLEYS AND MID 50S ON RIDGETOPS. OWING TO SURFACE TEMPERATURES WARMING INTO THE LOW-MID 80S. A STOUT ELEVATED MIXED LAYER WOULD KEEP ANY STORMS LOW-TOPPED WITH UPDRAFTS STRUGGLING TO RISE ABOVE LOCAL RIDGETOPS. THE UPPER LEVEL PATTERN THROUGH THE PERIOD WILL FEATURE STRONG BLOCKING OVER CANADA AND A PERSISTENT RIDGE OVER THE SOUTHEAST CONUS. A PAIR OF CLOSED UPPER LEVEL LOWS WILL TAKE THE PATH OF LEAST RESISTANCE BETWEEN THESE FEATURES TRACKING FROM THE FOUR CORNERS REGION ACROSS THE PLAINS AND INTO THE UPPER MIDWEST.
SOME MOISTURE WILL ROTATE AROUND THE UPPER LEVEL LOW AND COMBINED WITH DECENT OROGRAPHICS WILL PRODUCE SNOW IN THE NRN MTNS THRU THE AFTN. AS FOR WINDS AM STILL A LITTLE CONCERNED THAT THERE WILL BE A PERIOD OF STRONGER WINDS OVER PORTIONS OF THE HIGHER FOOTHILLS AND MTN AREAS FM MID MORNING THRU MID AFTN. THERE IS UPPER RIDGING OVER THE CWA MONDAY. THE NEXT UPPER TROUGH/CLOSED LOW GETS INTO COLORADO BY 06Z MONDAY NIGHT.
HIGH PRESSURE WILL BE STACKED ACROSS THE AREA TODAY. HIGHS WILL BE MAINLY IN THE LOWER 80S. HIGH PRESSURE WILL REMAIN IN CONTROL MONDAY. ALTHOUGH THE UPPER HIGH WILL FLATTEN A LITTLE. HIGHS WILL AGAIN BE MAINLY IN THE LOWER 80S. AN UPPER RIDGE ALONG THE GULF COAST WILL CONTINUE TO EXTEND UP TO THE TN VALLEY. HELPING KEEP HIGH TEMPERATURES MOSTLY IN THE LOWER 80S. A COUPLE OF LOW PRESSURE SYSTEMS AND FRONTS WILL MOVE FROM THE PLAINS STATES TO THE GREAT LAKES AND OHIO VALLEY REGIONS. THESE SYSTEM WILL FLATTEN THE RIDGE AT TIMES.
924 AM EDT SUN APR 24 2016 HIGH PRESSURE BUILDS SOUTH ACROSS THE AREA TODAY AND TONIGHT.
705 AM EDT SUN APR 24 2016 A RIDGE OF HIGH PRESSURE OVER THE UPPER OHIO VALLEY WILL SHIFT TO THE EAST COAST TONIGHT. A WARM FRONT WILL LIFT NORTH ACROSS THE AREA TODAY AND THEN BECOME STATIONARY NORTH OF LAKE ERIE ON MONDAY.
An upper ridge is expected to remain in place today, which will keep precip W of the CWA. Have trended aoa the warmer guidance across the region. Tilly An omega block will dominate Canada and the northern CONUS thru this week, with upper longwave TROFs on the west and east coasts and the RIDGE component over the Plains. A series of strong Pacific storms will run just south of this blocking pattern, being dropped off from the west coast TROF and being picked up by the east coast TROF a few days later, with an overall track to the E-NE thru our region.
947 AM EDT SUN APR 24 2016 HIGH PRESSURE TODAY. A COLD FRONT APPROACHES MONDAY NIGHT BRINGING CHANCES FOR SHOWERS/STORMS.
1210 PM EDT SUN APR 24 2016 A WARMING TREND WILL GET UNDERWAY EARLY THIS WEEK AS HIGH PRESSURE MOVES OFFSHORE. A COLD FRONT WILL APPROACH FROM THE NORTH MID-WEEK BEFORE RETREATING. HIGH PRESSURE WILL BRING SEASONABLE TEMPERATURES. A SEABREEZE WILL MOVE INLAND MID AND LATE AFTERNOON AND SO WE DO NOT EXPECT THE BEACHES TO RISE ABOVE THE LOWER 70S THIS AFTERNOON. HIGH PRESSURE WILL MOVE OVERHEAD TONIGHT. WE EXPECT LOWS WILL BE IN THE LOWER TO MID 50S.
THESE FEATURES WILL BE COINCIDENT WITH THE SOUTHERN EXTENT OF A TROUGH FROM AN UPPER LOVE OVER THE NORTHERN PLAINS. WEAK UPPER RIDGING IS EXPECTED MONDAY ALTHOUGH LOWER LEVEL MOISTURE WILL BE INCREASING IN CENTRAL AND EASTERN OKLAHOMA.
1010 AM EDT SUN APR 24 2016 HIGH PRESSURE WILL SHIFT OFFSHORE SOUTH OF NEW ENGLAND TODAY. A WEAK COLD FRONT WILL DROP SOUTH THROUGH THE REGION TONIGHT AND WILL STALL OVER SOUTHERN NEW ENGLAND ON MONDAY.
HIGH PRESSURE AND CLEAR SKIES WILL REMAIN THROUGH THE DAY. CHATTANOOGA AIRPORT, TN 82 57 80 61 / 0 0 10 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 80 57 79 60 / 0 0 10 10 OAK RIDGE, TN 80 56 80 59 / 0 0 10 10 TRI CITIES AIRPORT, TN 78 47 78 56 / 0 0 10 10.
WIND ARE LIGHT AND TEMPS RANGE FROM THE UPPER 40S OVER NORTHEAST WEST TN AND ALONG THE TN RIVER TO THE LOWER 60S OVER PARTS OF THE DELTA. COAST AND LOW PRESSURE WILL BE MOVING INTO THE UPPER MISSISSIPPI VALLEY. HIGHS WILL BE IN THE LOWER 80S WITH LOWS MONDAY NIGHT IN THE 60S.
957 AM MDT SUN APR 24 2016 UPPER LOW SPINS OVER EASTERN WY. BUT MUCH OF THE CWA IS CURRENTLY IN THE DRY SLOT OF THE LOW PRESSURE SYSTEM. TODAY THROUGH MONDAY NIGHT UPPER LEVEL ANALYSIS HAS CLOSED LOW SPINNING OVER WYOMING. LOW PRESSURE IS OVER WESTERN SD. WITH WARM FRONT STRETCHED ACROSS NORTHERN SD. WINDS ARE BREEZY FROM VARYING DIRECTIONS AROUND THE LOW. UPPER LOW MOVES INTO FAR WESTERN SD. AND PRECIP AND COOLER AIR WILL WRAP AROUND INTO NORTHWESTERN SD AND NORTHEASTERN WY. PRECIP WILL SLOWLY SHIFT EASTWARD WITH THE LOW DURING THE AFTERNOON AND OVERNIGHT. UPPER LEVEL LOW SHIFTS INTO NORTH DAKOTA.
845 AM EDT SUN APR 24 2016 HIGH PRESSURE OVERHEAD WILL GIVE THE AREA A SUNNY BUT COOL SUNDAY. LOW PRESSURE MOVING INTO THE GREAT LAKES WILL PUSH SHOWERS INTO CENTRAL NEW YORK LATER MONDAY.
MUCH WARMER CONDITIONS EXPECTED MONDAY AS WEAK RIDGING BUILDS ALOFT AND SUBSIDENT SSW WINDS OVERSPREAD THE RIO GRANDE AND BRUSH COUNTRY WITH HIGHS RANGING FROM THE UPPER 90S WEST TO MID 80S EAST.
1015 AM EDT SUN APR 24 2016 DRY HIGH PRESSURE WILL BUILD OVER THE REGION FROM THE NORTH TODAY. AS THE HIGH CENTER MOVES OFFSHORE EARLY IN THE WORK WEEK.
AN UPPER TROUGH WILL MOVE OVER WESTERN WASHINGTON THROUGH TONIGHT WITH SHOWERS AND COOL WEATHER. THE REST OF THE WEEK WILL BE MAINLY DRY WITH WEAK HIGH PRESSURE ALOFT IN CONTROL. THE UPPER LEVEL TROUGH JUST OFFSHORE DIGS INTO NRN CALIF THROUGH THIS EVENING. A RESIDUAL TROUGH AXIS SHIFTS OVER WRN WA THROUGH TONIGHT AND THAT SHOULD KEEP SOME SHOWERS GOING. BY MONDAY MORNING THE UPPER TROUGH WILL BE OVER THE GREAT BASIN AND THE RESIDUAL TROUGH AXIS UP THROUGH WRN WA MAY STILL BE GIVING SCATTERED SHOWERS. THE TROUGH AXIS FINALLY MOVES INLAND IN THE AFTERNOON AND NW FLOW ALOFT DRIES UP THE AIR BY EVENING WITH THE AIR MASS STABILIZING.
A closed upper low now over WY is progged to track east and reach the central SD/NE border by late afternoon. A dryline will set up from central KS through far western OK this afternoon while a cold front swings southeast from under the WY system.
907 AM EDT SUN APR 24 2016 HIGH PRESSURE WILL CONTINUE TO BUILD INTO SOUTH FLORIDA TODAY FROM THE NORTH. /ISSUED 322 AM EDT SUN APR 24 2016/ HIGH PRESSURE WILL DOMINATE THROUGH THE WEEK. LOW LEVEL RIDGE BUILDING IN FROM NORTH DURING THE SHORT TERM WILL TURN WINDS TO A NORTHEASTERLY DIRECTION. NE WIND SHIFT HAS OCCURRED ALONG PORTIONS OF THE FLORIDA EAST COAST WITH THE RESULTING CONVERGENCE LEADING TO A FEW SHOWERS AND OCCASIONAL TSRA OVER THE WARMER GULFSTREAM WATERS. /ALM HIGH PRESSURE WILL REMAIN CENTERED NORTH AND EAST OF THE WATERS THROUGH THE WEEK.
3 TO 5 INCHES OF SNOW ARE FORECAST FOR THE HIGHER PEAKS OF THE SOUTHERN OREGON CASCADES AND WARNER MOUNTAINS. ON MONDAY MOST OF THE PRECIPITATION WILL BE OVER LAKE AND MODOC COUNTIES AS THE CLOSED LOW MOVES INTO NEVADA WITH ONLY ISOLATED SHOWERS WEST OF THE CASCADES.
HIGH PRESSURE HAS SETTLED INTO THE AREA AND A MORE STABLE AIR MASS IS RESIDING OVER THE STATE NOW. HIGH PRESSURE MOVES INTO THE AREA FOR THE NEXT SEVERAL DAYS.