Aikyam-Lab/Synoptic-Bench huggingface dataset:
THE WEST-TO-EAST ORIENTATED UPPER LEVEL TROUGH AXIS PASSAGE INTO THE MISSISSIPPI RIVER VALLEY TOMORROW AFTERNOON WILL PUSH A WEAK (DRY) FRONT THROUGH WEDNESDAY MORNING. /ISSUED 454 AM CDT TUE MAY 3 2016/ MID/HIGH CLOUDS WILL BE SLOW TO CLEAR OUT OF SE TX TODAY BUT WE SHOULD SEE THE LAST OF THEM LATE THIS AFTN/EVENING AS THE UPPER RIDGE FINALLY BUILDS IN FROM THE WEST. WE SHOULD ALSO BE SEEING CHANGES ALOFT AS THE RIDGE SQUEEZED BETWEEN THE TWO BULLSEYE UPPER LOWS ON BOTH COASTS BEGINS TO FLATTEN AS THE SYSTEM OUT WEST BEGINS TO MOVE EAST OVER THE WEEKEND. 41 MODERATE NORTHERLY WINDS WILL CONTINUE THIS MORNING AND MAY GET A NUDGE UP AS 850 COLD FRONT ARRIVES THIS MORNING AND THE HAPHAZARD CAA IN PLACE GETS REINFORCED.
HIGH TEMPERATURES SO FAR TODAY ARE IN THE LOWER TO MID 70S. AND THIS UPPER LEVEL FLOW PERSISTS THROUGH THE END OF THE WEEK AS RIDGING MOVES VERY SLOWLY EASTWARD ACROSS THE STATE. HIGH PRESSURE STAYS IN CONTROL OF THE AREA AS IT TOO WORKS VERY SLOWLY EASTWARD ACROSS THE STATE RESULTING IN A CONTINUATION OF COOL NIGHTS AND MILD/WARM DAYS.
344 PM CDT TUE MAY 3 2016 COLD FRONT THAT MOVED OFFSHORE IS JUST NOW PUSHING SOUTH OF THE OUTER COASTAL WATERS. LONG WAVE TROUGH MARCHING SOUTHWARD ACROSS THE GREAT LAKES WILL DIG AND REMAIN IN PLACE ACROSS THE ENTIRE SOUTHEASTERN CONUS THROUGHOUT THE REST OF THIS WEEK.
210 PM CDT TUE MAY 3 2016 AMPLIFIED UPPER RIDGE OVER ROCKIES. WITH DEEP UPPER TROUGH RETREATING ACROSS THE LOWER GREAT LAKES. BRINGING COOLER TEMPS AND MOSTLY CLEAR SKIES TO AREA UNDER DEEP NW FLOW. COLD FRONT EARLY WEDNESDAY IN THIS FLOW WILL HAVE LITTLE IMPACT ON TEMPS.
LOW PRESSURE AND A COLD FRONT WILL DROP SOUTHEASTWARD THROUGH THE REGION WEDNESDAY AND WEDNESDAY NIGHT.
58/ROSE A WEAK COLD FRONT WILL PUSH THROUGH CENTRAL ALABAMA TODAY AND WILL TRIGGER SCATTERED SHOWERS AND THUNDERSTORMS.
355 PM EDT TUE MAY 3 2016 WEAK HIGH PRESSURE WILL BUILD OVER THE REGION TODAY WITH GRADUAL CLEARING FROM WEST TO EAST THROUGH THE EVENING. CLEARING OVER MOST OF NORTHERN NEW YORK IS EXPECTED TO CONTINUE THROUGH THE REST OF THE AFTERNOON AS HIGH PRESSURE CRESTS OVER THE NORTH COUNTRY THIS EVENING. LATE THIS EVENING EXPECT THE HIGH PRESSURE TO BEGIN TO SLIDE TOWARDS THE EAST AND FLOW TURNS MORE EAST SOUTHEAST WITH MOISTURE ADVECTION BEGINNING TO INCREASE OFF THE COAST OF THE ATLANTIC. ONCE THAT DOES, EXPECT AN UPPER LEVEL LOW TO DROP SOUTHWARD FROM THE GREAT LAKES WHICH WILL SERVE TO BE THE FORCING FOR SOME LIGHT RAIN AND SHOWERS WEDNESDAY. WITH THAT WARMING OVERNIGHT EXPECT A MORE MILD EVENING THIS EVENING WITH OVERNIGHT LOWS IN THE LOW 40S ACROSS THE NORTH COUNTRY.
319 PM CDT TUE MAY 3 2016 Quiet weather will continue over the next several days as upper- level ridging continues to dominate the pattern across the central U. In the short term, a weak cold front will slide through the region tomorrow morning, slightly reducing temperatures and veering and increasing winds; but without any moisture, skies should remain clear and allow temperatures to still warm into the mid to upper 60s throughout the forecast area.
300 PM CDT TUE MAY 3 2016 THE 19Z SURFACE ANALYSIS INDICATED THAT THE COLD FRONT WAS NOW WELL SOUTH OF THE FORECAST AREA WITH DRY AIR ADVECTING SOUTHEAST INTO THE TENNESSEE VALLEY REGION.
430 PM EDT TUE MAY 3 2016 WEAK HIGH PRESSURE SPREADS OVER NORTHERN NEW ENGLAND TONIGHT. AN EASTERLY ONSHORE FLOW DEVELOPS ON WEDNESDAY BETWEEN LOW PRESSURE TO THE SOUTH AND HIGH PRESSURE TO THE NORTH. ANOTHER AREA OF LOW PRESSURE WILL DEVELOP AND TRACK NORTHWARD TO THE EAST OF CAPE COD WEDNESDAY AFTERNOON AND NIGHT AND WILL BRING MORE RAIN TO THE AREA. PERSISTENT LOW PRESSURE LINGERS THROUGH THE WEEKEND KEEPING COOL TEMPERATURES AND SHOWERY WEATHER IN THE FORECAST. WEAK HIGH PRESSURE RIDGING WILL BUILD DOWN THROUGH THE GULF OF MAINE TONIGHT. SOME PATCHY DRIZZLE AND FOG MAY DEVELOP LATER TONIGHT AS THE LOW LEVEL EASTERLY FLOW STRENGTHENS. A RAINY EVENING IS IN STORE WEDNESDAY EVENING AS FORCING FOR ASCENT ASSOCIATED WITH LOW PRESSURE TO OUR SOUTHEAST MAXIMIZES.
OUR NEXT SYSTEM WILL BE A COLD FRONT MOVING IN FROM THE NORTH AND BRINGING WITH IT ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS DURING THE DAY TOMORROW.
145 PM EDT TUE MAY 3 2016 LOW PRESSURE WILL MOVE EAST INTO THE CANADIAN MARITIMES TODAY. HIGH PRESSURE WILL THEN BUILD ACROSS NORTHERN MAINE THROUGH MID WEEK. AN UPPER TROUGH OVER THE GREAT LAKES WILL SLOWLY PROGRESS EASTWARD DURING THE MIDDLE OF THE WEEK. WEDNESDAY WILL BE DRY AND SEASONABLE IN SOUTHWEST FLOW AHEAD OF THE UPPER TROUGH.
A SURFACE COLD FRONT WILL MOVE ACROSS SOUTHERN WI THIS EVENING BRINGING A LINE OF SHOWERS. BUFKIT SOUNDINGS SHOW SOME OF THE BETTER INSTABILITY IS AFTER THE FRONTAL PASSAGE WHEN THE LOW LEVELS SATURATE. TEMPERATURES WILL BE COOLER ON WEDNESDAY BEHIND THE FRONT.
SUNNY AND WARM WEATHER WILL PREVAIL THIS AFTERNOON UNDER HIGH PRESSURE. A LOW PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE WEST AND RESULT IN COOLING AND MORE CLOUDS WEDNESDAY.
255 PM EDT TUE MAY 3 2016 AN UPPER LOW WILL DROP INTO THE OHIO VALLEY AND LINGER AROUND THE MID-ATLANTIC FOR REST OF THE WEEK. THE LOW CLOUDS WILL RE-ESTABLISH THEMSELVES OVER MOST/ALL OF THE AREA TONIGHT. UPPER LOW OVER CENTRAL CANADA WILL SLIDE INTO THE UPPER OH VLY AND KEEP IT UNSETTLED THROUGH THE PERIOD. POPS ON WED REFLECT THE NORMAL OUTCOME OF AN UPPER LOW OVER OH/WV. WITH THE HIGHER /LOW LIKELY/ POPS SLIDE FROM E-W AS THE MORE DRIZZLY STUFF IS JOINED BY DIURNAL CONVECTION OVER THE WRN MTNS. MAXES SHOULD BE ABOUT 5-10F UNDER NORMALS DUE TO LOTS OF CLOUDS AND PROXIMITY OF THE UPPER LOW TO OUR WEST.
317 PM CDT TUE MAY 3 2016 THE WEATHER IN THE SHORT TERM PERIODS REMAIN QUIET WITH RISING HEIGHTS BEHIND A DEPARTING TROUGH AXIS. WHILE UPPER RIDGING EXPANDS EAST OF THE ROCKIES. UPPER LOW PRESSURE NEAR THE GREAT LAKES WILL TRANSLATE TO THE OHIO VALLEY REGION WEDNESDAY SETTING UP AN OMEGA BLOCKING PATTERN FOR THE MIDDLE OF THE WORKWEEK. WITH ANOTHER UPPER LOW TO THE WEST IN THE PACIFIC. OUR REGION WILL BE UNDER THE INFLUENCE OF THE UPPER RIDGE WITH A CONTINUATION OF DRY/MILD CONDITIONS. HEADING INTO WEDNESDAY HIGH TEMPS IN THE LOW/MID 70S STILL LOOK ON TRACK.
225 PM EDT TUE MAY 3 2016 UPPER LEVEL TROUGH CROSSES THIS AFTERNOON AND EVENING WITH SCATTERED SHOWERS.
121 PM EDT TUE MAY 3 2016 WEAK HIGH PRESSURE WILL BUILD INTO THE OHIO VALLEY TODAY AND THEN WEAKEN AS A LOW PRESSURE CENTER DEVELOPS OVER THE GREAT LAKES TONIGHT. THE LONGWAVE TROUGH WILL BE DIGGING AND ELONGATING WITH A N-S AXIS OVER THE IN/OH BORDER. THE LOW WILL STRENGTHEN UNDERNEATH THE UPPER LEVEL STRENGTHENING L/W TROUGH WHICH SHOULD CUTOFF OVER NORTHERN INDIANA IN THE AFTERNOON. DAYTIME HIGHS WILL BE HARD PRESSED TO GET OUT OF THE LOWER 60S TODAY AND THEN REMAIN IN THE 50S FOR WED AND THURS.
UPPER LOW WILL CONTINUE PASSING TO OUR SOUTH OVER NEXT FEW DAYS. AS UPPER TROUGH SITS OFFSHORE AND MAINTAINING SOUTHERLY FLOW OVER WESTERN OREGON AND SW WASHINGTON. UPPER TROUGH OFFSHORE WILL SLOWLY PUSH EASTWARD OVER THE REGION TONIGHT THROUGH THU. MAIN ENERGY ASSOCIATED WITH THE TROUGH WILL REMAIN WELL SOUTH OF OUR AREA OVER NRN CALIF. SO MON WILL BE BIT COOLER.
HIGH CLOUDS ASSOCIATED WITH AN APPROACHING LOW PRESSURE SYSTEM ARE INVADING THE SKIES OF CENTRAL CALIFORNIA.
213 PM EDT TUE MAY 3 2016 A COLD FRONT WILL BE SLOW TO PUSH TO THE COAST INTO TONIGHT.
539 PM CDT TUE MAY 3 2016 WX MAP SHOWING HIGH PRESSURE BUILDING SOUTHWARD ACROSS TX INTO LA. HIGH PRESSURE WILL CONTINUE TO USHER COOLER AND DRIER AIR ACROSS THE AREA WITH COMPLETELY CLEAR SKIES EXPECTED BY THIS EVENING AND OVERNIGHT. DRY WX WILL CONTINUE FOR THE REMAINDER OF THE WEEK AS NW FLOW ALOFT WILL ALLOW FOR COOL AND DRY HIGH PRESSURE TO BUILD SOUTHWARD FROM CANADA. A LARGE UPPER LEVEL LOW OVER THE WESTERN STATES WILL SLOWLY MOVE EAST OVER THE WEEKEND.
AN AREA OF HIGH PRESSURE IN THE WESTERN ATLANTIC IS BEING PUSHED SLOWLY EASTWARD AHEAD OF A TROUGH MOVING ACROSS THE MISSISSIPPI VALLEY.
130 PM CDT TUE MAY 3 2016 WX MAP SHOWING HIGH PRESSURE BUILDING SOUTHWARD ACROSS TX INTO LA. HIGH PRESSURE WILL CONTINUE TO USHER COOLER AND DRIER AIR ACROSS THE AREA WITH COMPLETELY CLEAR SKIES EXPECTED BY THIS EVENING AND OVERNIGHT. DRY WX WILL CONTINUE FOR THE REMAINDER OF THE WEEK AS NW FLOW ALOFT WILL ALLOW FOR COOL AND DRY HIGH PRESSURE TO BUILD SOUTHWARD FROM CANADA. A LARGE UPPER LEVEL LOW OVER THE WESTERN STATES WILL SLOWLY MOVE EAST OVER THE WEEKEND.
1207 AM CDT Wed Oct 5 2016 500mb upper low continues to spin over eastern Montana this afternoon as seen in IR imagery. Upper ridge through the GreatLakes. Cut off low over Pennsylvania and closed low moving off the Gulf of Alaska into the western Canadian Provinces. At the surface, low pressure will follow a similar track to the upper level closed low, this will allow the pressure gradient to relax with backing light winds to the west expected overnight.
634 AM EDT Wed Oct 5 2016 High pressure will remain over New England and the eastern Great Lakes through Thursday.
222 AM EDT Wed Oct 5 2016 Valley fog and scattered clouds early this morning, will give way to sunshine during the day as high pressure takes charge.
However, western periphery of an upper ridge will hold over the Ohio River Valley, and should deflect most of the moisture that is currently entering the mid Mississippi River Valley to our NW today and tonight. Highs should reach into the low to mid 80s. A few of the cooler eastern spots could see mid 50s. Upper ridge strengthens a bit over the area on Thursday, helping to bring mostly sunny skies and highs in the low to mid 80s.
410 AM EDT Wed Oct 5 2016 High pressure will maintain dry and warm weather until the approach of a cold front this weekend. High pressure, over the Northeast CONUS, will maintain dry weather and temperatures about 5 degrees above the averages. Upper-level ridge axis will shift eastward on Thursday night and Fri, leaving the forecast area beneath weak southwesterly upper flow.
230 AM EDT Wed Oct 5 2016 A ridge of high pressure along the northern New England coast will provide an easterly flow of moist air at low levels over the region through at least mid week.
A second stronger wave will through this afternoon and evening supporting more showers, especially over the higher terrain. The showers will decrease and shift mainly into northern portions of the forecast area (Baker County and the Boise/West Central Mountains) on Thursday as heights rise with a developing weak upper ridge. Temperatures will be a few degrees warmer on Thursday, but still 5-10 degrees below normal.
High res models continue to spread precip into the northwest part of the state as deep vertically stacked low pressure system currently centered near northwest ND slowly moves to the northeast. Surface to 850 mb lapse rates of 7-8C/km are expected south of the low through the night in strong cold air advection to support the transport of momentum to the surface with 40-45kts at the top of the mixed layer. As the 850-700mb layer across the northwest cools to sub freezing between 06-09 UTC tonight on the backside of the low, wrap around light rain may mix or change over completely to snow.
Although this line of activity has been weakening throughout the day, it will begin to ramp up again this evening as the surface cold front moves into the area. Expect dry and warm conditions for Wednesday during the day with highs in the low 80s. In the afternoon, a warm front will begin to push north into Iowa and stall out. Storm chances continue Thursday as the upper level trough finally approaches the area and begins pushing the stalled cold front in Iowa south.
658 AM EDT WED OCT 5 2016 The cold front now over the upper Midwest will weaken considerably as it approaches Lower Mi today courtesy of the strong persistent high pressure system over the Mid Atlantic and Northeast. The dry air in the low levels will likely keep any ceilings well above 5k ft today, possibly lowering overnight as low level moisture increases. Potent PV anomaly rotating around the upper low will maintain a healthy LLJ over the western and northern portions of the Great Lakes through today. The next wave, currently coming onshore over the North Coast of California, will pivot through the longwave trough and elicit a LLJ response immediately upstream in similar fashion to today's wave.
Potent PV anomaly rotating around the upper low will maintain a healthy LLJ over the western and northern portions of the Great Lakes through today. The next wave, currently coming onshore over the North Coast of California, will pivot through the longwave trough and elicit a LLJ response immediately upstream in similar fashion to today's wave.
Upper low currently S of Vancouver Island will move SE into NW OR and bring in increasing moisture and showers to TAF sites by Wednesday morning.
349 AM CDT WED OCT 5 2016 The lower 70s dp temps will get a nudge southwest today as a slightly drier air mass moves into the area from the northeast thanks to Matthew moving northward. The dp temps over Georgia, Alabama and northern Mississippi will move into the area and slowly drop our dp temps into the low to mid 60s by late today.
will see little change in the weather pattern through the TAF period as high pressure continues to dominate.
There's some concern that places currently receiving rainfall may end up fogging in by morning if skies can clear off and if winds go light and variable within this slow to move out surface trof over far eastern South Dakota. For tonight, a short wave trough will lift northeast across eastern SD. Otherwise, cool and dry Canadian air will be flowing into the region through Thursday night as high pressure builds in from the north.
Have brought the cold front into the OK Panhandle late Thursday afternoon, then across the Texas Panhandle Thursday evening.
A pseudo warm front was analyzed from Central OK down into the ArkLaTex. The warm front will retreat north to near the Kansas border by this evening.
Drier conditions and warmer temperatures are expected for the later part of the week as high pressure builds across the region. A short wave trough will quickly move through northern NV/southern ID today. Temperatures will remain subdued today and tonight but begin to rise Thursday as ridging starts to build over the region.
SHORT TERM (Today through Thursday): Another warm and dry October day is expected across the RGV as persistent but flattened 500mb ridging remains in place. A deep upper level low will continue to move across the Northern Plains states today and act to weaken the ridge and shift it a bit to the south. but with the ridge weakening a bit. easterly to southeasterly flow will begin to deepen through the lower layers. Readings could be a few degrees cooler on Thursday.
At 00z Wednesday a 500mb trough was located over the Central and Northern Plains. A surface and 850mb cold front both stretched from western Oklahoma to eastern Nebraska. Cold front has cleared much of the DDC CWA early this afternoon, with gusty NW winds and cool/dry advection.
The low pressure area along the Washington coast will move east through the PacNW today with the tail end clipping far northern California, and perhaps generating a few showers across the northern mountains.
136 AM EDT WED OCT 5 2016 High pressure through much of the work week. Matthew from the south and an upper trough from the west will combine for modest rain chances this weekend. High pressure remains to our northeast with easterly low level flow across the Central Appalachians and Middle Ohio River Valley. Dry conditions with high pressure overhead.
330 AM CDT WED OCT 5 2016 Weather map shows high pressure ridging over most of the eastern U. This is not a cold front, but should bring dewpts back into the 60s, and allow lows to reach the mid 60s north to near 70 I-10 corridor.
The low level flow is forecast to back, and the inland trajectories should further enhance drying of the boundary layer, especially over eastern MS, but light wind will help to mitigate fire weather danger for now.
408 AM CDT Wed Oct 5 2016 Main forecast issues involve mixed precip across the west and north related to deep vertically stacked low pressure system that will slowly depart the region today with strong winds continuing behind the system.
240 AM CDT WED OCT 5 2016 Low level flow around low pressure to the north resulting in weak cold advection and westerly low level flow.
Glance at surface observations across northwest Colorado showing most sites at or above freezing although we still have a few hours to go and some clearing noted on satellite over this area. Convectively enhanced showers linger through Thursday afternoon as the trough passes to our east and northwest flow settles back in. Showers will come to an end by Thursday evening as drier northwest flow moves in behind the departing upper level trough.
313 AM CDT Wed Oct 5 2016 Weak front pushing into western MO this morning will stall out somewhere near or south of I-70 today, then push back north as a warm front later this evening. Despite the presence of this boundary, a lack of any deep synoptic-scale ascent should keep most of the day dry although some thunderstorm development is possible later today and overnight as a LLJ strengthens and feeds into the retreating warm front. Several additional rounds of showers and thunderstorms are possible throughout the day Thursday in a continuous warm air advection regime, with the highest chances coming later in the evening when a cold front will swing in from the west.
Much better scenario sfc and aloft indicated Wed late aftn and evening as prefrontal trough crosses the wrn lakes. Otherwise much warmer temps expected as vigorous swrly flow aides deep mixing for the date with many locations likely flirting with 80. Attention this period focused on approach of lagging srn Rockies disturbance timed with eastward cold frontal boundary passage. Primary dynamical influence expected Fri night as aforementioned upper trough and attendant cold front sweep through the great lakes. After that expansive ridge builds in through the mid MS/TN valleys underneath upper level troughing centered across Hudson Bay.
Upper low continues to spin over the northern plains with a weak disturbance rotating around it approaching the central Rockies late in the afternoon. High temperatures will range from the lower 70s in northeast Colorado to the upper 70s in central Kansas. During the extended an upper level ridge builds over the High Plains producing mostly dry conditions and near normal temperatures in the mid to upper 70s. The ridge will flattened allowing for a trough, that is moving east from the west coast, to pass over the High Plains mid week. As this trough moves through the Tri State area there is a low chances for rainfall in some areas in the region.
The cold front is currently moving through central KS and will be the focus for storm development around 2 to 3 pm. Hodographs show slight curvature in the lowest levels with the directional shear. Southerly flow will keep dewpoints in the lower to mid 60 range, especially in portions of east central Kansas. By Thursday morning the main trough axis will be just west of the Rockies, shifting eastward through the afternoon.
154 AM EDT WED OCT 5 2016 With ridging to the north and Matthew to the SE, generally NE flow at 5-10 knots will be in place across the area for the next 24 hours. High pressure will remain centered north of the waters over the next couple of days.
158 AM EDT Wed Oct 5 2016 High pressure centered in the northeastern states will keep dry weather in place through the end of the week.
159 AM EDT Wed Oct 5 2016 An upper level low, which has impacted our weather for several days, is finally exiting off the east coast.
547 AM EDT Wed Oct 5 2016 High pressure over the northeastern United States will keep fair weather across the region through late week.
357 AM EDT Wed Oct 5 2016 High pressure will remain over New England and the eastern Great Lakes through Thursday.
Moderate northeasterly flow will continue for the next few days as the region is between an area of high pressure across the Mid Atlantic States and Hurricane Matthew approaches the Florida Peninsula from the SE.
Sub-freezing overnight temperatures will be possible in many areas through Thursday night. With clear skies and cold temperatures, areas of patchy freezing fog have developed near Truckee with similar conditions possible in Sierra Valley.
The next storm system will move towards the region Wednesday night into Thursday with showers and storms anticipated mainly along and north of Interstate 44 as a cold front moves across the plains and an upper level trough moves into the plains.
Light winds will likely persist overnight, keeping temperatures a little warmer than otherwise. Temps currently are in the low to mid 70s, with gradual falls into the 60s late tonight. Light winds are expected to maintain a presence overnight, keeping temperatures a little warmer. Temperatures by daybreak will likely be in the 60s at most locales, although a few upper 50s are possible in normally cooler sheltered valleys in the east.
The upper ridge will continue to reside over this area for the next few days.
335 AM EDT WED OCT 5 2016 Cool high pressure will ridge down the East Coast and across the Carolinas through Thursday.
225 AM CDT Wed Oct 5 2016 An upper ridge will continue to dominate the forecast over the next seven days.
655 AM EDT WED OCT 5 2016 High pressure through much of the work week. Matthew from the south and an upper trough from the west will increase chance for rain this weekend. High pressure remains to our northeast with easterly low level flow across the Central Appalachians and Middle Ohio River Valley. Dry conditions under high pressure with southeasterly flow across the area. An upper trough approaches from the west as hurricane Matthew moves northward, our forecast area will be stuck in between for increased PoPs.
Unsettled weather is expected to begin by Thursday and continue into the weekend as a large upper level trough evolves and digs across the western half of the nation. This upper level trough will also allow a cold front to surge south Thursday night.
A well-defined trough will move through the forecast area today from the northwest and will bring a period of enhanced shower activity. Morning infrared satellite imagery shows the trough reaching the coast now, bringing rainfall to coastal counties. Travel impacts are expected to be minimal based on the high snow levels, but morning road surface temperatures in the mountains are in the 30s, and be prepared for perhaps some morning slushy conditions on the very highest mountain roads. Thursday should be dry and warmer over the forecast area under low amplitude ridging.
Temperatures along the island chain are in the lower 80s at this hour.
Low pressure system center stacked over southeastern Saskatchewan early this morning. Precipitation bands wrapped around the back side of the low a mix of rain and snow with temperatures in the low 30s across most of northeast Montana. Precipitation continues today with the proximity of the low but will be tapering off from the southwest as the low moves north. Winds also will remain strong today due to the lingering low pressure system and Lake Wind Advisory remains in effect for Fort Peck Lake.
Conditions quickly dry out behind the cold front and with the lower dewpoints could see lows falling into the 30s across our far western/northwestern zones by dawn Wednesday morning. Have kept patchy frost out of the forecast for now, but can not rule out a little patchy frost in low areas around Ord, Lexington, and Cambridge. This will bring a strong cold front through the area and a chance of showers and isolated thunderstorms.
High pressure dominates with above average temperatures under a dry and warm air mass. Highs today look to reach the lower to mid 80s again with light northeast to east winds and mostly sunny skies.
409 AM EDT Wed Oct 5 2016 High pressure over the northeastern United States will keep fair weather across the region through late week.