Aikyam-Lab/Synoptic-Bench huggingface dataset:
a strong cold front will begin moving south across the region, supporting a large temperature contrast with upper 40s over far northern KS, and near 70 degrees across far southern KS. Not expecting big impacts, but cannot rule out patchy slick spots due to patchy light freezing drizzle, light sleet and perhaps light snow, especially on untreated roads, bridges and sidewalks.
Added mention of some blowing snow reducing visibilities and some slippery roads due to a light ice glaze from freezing and mixed precipitation this afternoon/evening.
Current surface map shows low across southwest Minnesota with cold front into central Nebraska.
West-northwest winds 25 to 35 mph sustained with gusts to 50 mph will become northwest and diminish tonight with the passage of the cold front. Attention turns to Saturday afternoon and evening as a cold front moves into the area from the north and stalls along the Laramie Range.
420 AM CDT Sat Mar 31 2018 Heavy snow continues early this morning along and north of I-94, with precip turning to rain south across east central MN and west central WI due to slightly warmer air up to 5000 ft.
A cold front will continue shifting down the Florida Peninsula through the next several hours before stalling across South Florida later this morning. Thereafter, a quasi-zonal upper level pattern sets up across the southeastern US, lasting through mid-week before another upper level trough digs through the Central US, and shifts through the southeast mid to late week.
Sunday should be a dry and slightly warmer day, ahead of the next system.
In the upper levels a broad trough is over the Central and Eastern U. A decaying cold front remains over Central Florida. Temps will be a bit warmer with highs in the low to mid 70s.
1243 AM CDT Sat Mar 31 2018 For the 06Z TAFs, a cold front will move thru the TAF sites later this morning with gusty north to northeast winds in its wake. Surface winds will trend to southwest ahead of an incoming cold front. This will help keep the air mixed and the low temperatures in the mid to upper 40s for some areas to the south. The northwest Panhandles may not see as much wind, but should stay mixed enough that the lows will be near 40. Temperatures will still be in the 70s across the Panhandles, but a cold front will be in Saturday night.
106 AM EDT Sat Mar 31 2018 A cold front will move across the area this evening with high pressure building into the region Saturday.
Dry and mild conditions will prevail on Saturday under high pressure aloft. A vigorous low pressure system will bring wet and cooler weather to the area on Sunday.
455 AM MDT Sat Mar 31 2018 Current surface map shows low across southwest Minnesota with cold front into central Nebraska.
Dry high pressure will hold over the CWA through tonight. the region will be under the influence of zonal flow in the mid and upper levels and a stalled weak frontal boundary across the northern portion of the state in the lower levels.
305 AM MDT Sat Mar 31 2018 Skies are mostly clear this afternoon with the short term focus being on the approaching cold frontal boundary that pushes southwestward into the region on Saturday. This will set the region up with near surface upslope flow that pushes the area of higher dewpoint air into the higher terrain to the west ahead of a short wave trough aloft expected to move east of the Rockies and across the central high plains Saturday night.
Arctic cold front moved south through the high plains, with winds shifting to the north and northeast, and abundant low clouds.
The cold front has pushed south and east of the area the past few hours. Cool and dry northerly flow will be the main story today as high pressure builds in across the Southeastern US. Partly cloudy skies possible this morning as the main upper level trough axis slides through the area behind yesterday's cold front. Clear skies and calm winds tonight will lead to decent radiational cooling, allowing overnight low temperatures to drop into the low 40s for most of Central AL. High pressure will be in place for Saturday with highs mostly in the mid 70s under sunny skies.
After the passage of the cold front today, dry conditions are expected to persist throughout the period as high pressure begins to dominate the region. Temperatures in the area will be at or slightly above normal, with highs in the mid 70s to the lower 80s and lows ranging from the upper 40s to the mid 50s.
Temperatures will slowly fall back into the 40s toward sunrise, as the low level jet shifts eastward and winds weaken/trend NWly. A strong cold front will sweep through SW KS early this morning, clearing all zones by 10 am. Expect a cold Easter behind the aforementioned cold front with Canadian high pressure building into the region. Highs on Sunday look to range from the low 40s across central Kansas to low 50s along the KS/CO border.
The next chance for snow comes Mon afternoon through Tue morning as a lee cyclone moves into the Northern Plains. Tue would likely be coldest in the wake of departing system with fresh high pressure dropping south.
700 AM EDT Sat Mar 31 2018 A ridge of high pressure will move through from the west today and off the coast tonight.
To the east of the low clouds, fog is expected to form by 09Z over the inland coastal plains.
Deeper moisture in place combined with some terrestrial heating should allow for the development of isolated to scattered showers along and south of the I-4 corridor with the highest chances furthest south. More sunshine will allow for temps to warm more with afternoon highs in the lower to mid 80s, perhaps a few upper 80s across SW Florida.
Expect max temps to be a tad cooler than yesterday across the region, with readings in the 60s to around 70 across the plains and 50s and 60s in the valleys and 40s mtns. It will A better push of cooler air will come down the plains tonight and winds will be a bit stronger across all areas during the nighttime hours. Expect upslope flow of 10 to 20 mph across most of the lower elevations tonight and westerlies will be picking up across the mtn peaks tonight.
229 AM MDT Sat Mar 31 2018 Current surface map show slow across southwest Minnesota with cold front into central Nebraska.
157 AM CDT Sat Mar 31 2018 209 PM CDT Windy conditions on Saturday remain the focus as a strong cold front crosses the region. An increasing pressure gradient between high pressure over the eastern CONUS and the strengthening low will result in gusty SW winds across the area in the morning.
449 AM CDT Sat Mar 31 2018 Temps today will be similar to slightly warmer than yesterday. A cold front will push through today but the cooler air behind it will lag enough to allow us to reach into the 60s and 70s. While the Panhandles are busy seeing clouds on Sunday, a closed low in the mid levels begins to swing southward and approach the Pacific NW while another low pressure trough invades southern California.
There is no appreciable change in thickness values, so no additional cooler air is moving over the forecast area.
118 AM EDT Sat Mar 31 2018 Dry weather is expected through most of the day under building high pressure. Precipitation chances return tonight with the passage of a cold front. Dry weather through most of the day as high pressure slides east across the region. Increasing wind is expected this afternoon as the surface pressure gradient tightens between the exiting high and the approaching cold front. The cold front is progged to cross late tonight. What will need to be watched in future model runs is how far south and east tonight's cold front pushes on Sunday. At this time, the greatest threat for advisory level snowfall would be south of I-70 and particularly over the ridge counties.
/issued 752 PM EDT Fri Mar 30 2018/ Quiet evening is expected, with perhaps an isolated shower or two toward midnight as a week cold front sags into the region. /issued 359 PM EDT Fri Mar 30 2018/ SHORT TERM (Tonight through Sunday night) A weakening cold front that is producing showers over northern Florida will sag into the region overnight, perhaps producing a few showers, but activity is more likely with daytime instability increasing on Saturday. Majority of showers will be influenced by sea-breeze interactions, thus interior areas have the highest rain chances.
/issued 222 PM EDT Fri Mar 30 2018/ Light rain continues to exit the area as a cold front pushes through north and central Georgia. Dry high pressure already building into the area will hold into the weekend. Weekend system originates in the northern stream and is not expected to have enough depth to shove the weak cold front associated with it past the Georgia/Tennessee border region.
An upper level short wave trough will swing through the area today. The trough exits east of the area tonight, but another disturbance will dig southeastward along the British Columbia coast.
306 AM EDT Sat Mar 31 2018 High pressure builds across the area Saturday.
A cold front will approach northwest portions of the forecast area late tonight and a few showers cannot be ruled out in the vicinity of Bolivar County, but the front is expected to stall and this will keep any significant rainfall to our north.
However this cold front will loose much of it's punch by the time it makes it's way south to near Missoula where winds of 20 to 30 mph may be possible this morning.
This morning, high pressure is keeping it dry. To the north, a cold front is barreling toward Arkansas, and should be on the doorstep by this evening.
Surface winds will increase from a more southerly direction late this morning/ afternoon as high pressure shifts east of the area. A cold front will approach northwest portions of the forecast area late tonight and a few showers cannot be ruled out in the vicinity of Bolivar County, but the front is expected to stall and this will keep any significant rainfall to our north.
High pressure will move across the region tonight and Saturday morning providing us with a chilly night and dry weather. Strengthening low pressure moving from Michigan to Quebec will swing a cold front through here Saturday night. Overrunning/isentropic lift will commence in earnest in the afternoon with shallow high pressure and north winds at the surface beneath westerly flow aloft. Precipitation type during the day Sunday will be all rain, but a wet snow looks possible Sunday night along and north of Interstate 64 as temperatures tumble into the lower and middle 30s.
333 AM PDT Sat Mar 31 2018 A trough of low pressure off the West Coast will bring some high clouds at times the next few days.
The area of high pressure will move off to the east tonight into Saturday. On the back side of the high the pressure gradient will tighten across the area. Lows both nights are expected to drop into the upper 20s to the lower 30s. There could be some pockets of freezing rain in the morning/evening hours but overall this will be minimal. Again temperatures are expected to remain above freezing through much of the time the preciptiation is expected so no impacts are expected.
123 AM EDT Sat Mar 31 2018 High pressure will build across the area Saturday and linger into Sunday.
441 AM EDT Sat Mar 31 2018 Building high pressure will lead to a quiet day on Saturday with clear skies and seasonal temperatures.
The next surface front will move in quickly behind the retreating high pressure, with showers spreading from northwest to southeast across the mid state this evening and overnight.
413 AM EDT Sat Mar 31 2018 Dry weather is expected through most of the day under building high pressure. Precipitation chances return tonight with the passage of a cold front. Dry weather through most of the day as high pressure slides east across the region. Increasing wind is expected this afternoon as the surface pressure gradient tightens between the exiting high and the approaching cold front. The cold front is progged to cross late tonight. What will need to be watched in future model runs is how far south and east tonight's cold front pushes on Sunday. At this time, the greatest threat for advisory level snowfall would be south of I-70 and particularly over the ridge counties.
521 AM EDT Sat Mar 31 2018 High pressure will build across the region today. Low pressure will track northwest of Maine tonight into Sunday. High pressure will cross the region today with mostly sunny skies. Low pressure will track northeast across Quebec province tonight, drawing a cold front toward the region late. Precipitation will then persist early Sunday in advance of the cold front. Low temperatures tonight will range from the mid to upper 20s north, to the lower 30s interior Downeast with mid 30s along the Downeast coast. Intense low pressure is expected to pass well to the north of the region early Sunday.
SHORT TERM (Now through Sunday): Deep South Texas and the Rio Grande Valley will remain on the northern periphery of 500 mb high pressure as it gradually transitions east from the Baja Peninsula to the Bay of Campeche. Meanwhile, high pressure will also prevail at the surface as it remains centered over the southeast United States.
High pressure will remain over South Florida today, as tropical storm Harvey is forecast by NHC to move northeast from southwest Louisiana to northeast Louisiana. The MIA sounding this morning is showing the 500 mb temps today to be around -5C with a freezing level around 16,000 ft. High pressure will continue to be in place at 500mb. Temperatures look to be close to normal for this time of year, with perhaps a tendency to be slightly warmer, by a degree or two.
1206 PM EDT Wed Aug 30 2017 A ridge of high pressure will slide east across Pennsylvania today. A strong cold front will push south through the region on Thursday.
1055 AM EDT Wed Aug 30 2017 Weak high pressure will extend across the area into tonight. A cold front will drop south across the region on Thursday and then stall just south of the Ohio River.
1048 AM EDT Wed Aug 30 2017 The subtropical ridge centered north of the Antilles stretches west across the Bahamas and the Florid Peninsula. Temperatures are on their way to the lower 90s under mostly sunny skies.
625 AM CDT Wed Aug 30 2017 This morning, with high pressure just off to the east, and light winds some patchy fog is again possible early this morning across the eastern portions of the area. The upper level pattern remains unchanged with a large ridge over the west and a trough over the east. Have already been watching this feature as its energy is strong enough to break down the ridge over the west on its way eastward.
624 AM CDT Wed Aug 30 2017 High pressure across Mid-America in concert with dry northwest flow will support continued mostly quiet weather through the weekend.
1150 AM CDT Wed Aug 30 2017 High pressure across Mid-America in concert with dry northwest flow will support continued mostly quiet weather through the weekend.
Mid morning water vapor imagery continues to reveal a large upper ridge parked over the Four Corners, with abundant dry air in place from southern California to central Texas. Hard to get excited about storm chances when the morning dewpoint is in the 50s and forecast to mix out to the lower 40s this afternoon.
1107 AM EDT Wed Aug 30 2017 Weak high pressure today.
949 AM EDT Wed Aug 30 2017 Showers breaking out along a trough setting up over the Jacksonville Metro area and then out over the ocean east of St Augustine. Expect this trough to drift north up the coast and build northwestward. Expect to amend the Jacksonville metro TAFs to include a tempo group for showers and thunderstorms developing along the trough. A trough of low pressure will lift North across area waters today, and to the north of the waters tonight. High pressure will build to the northeast then east of the region on Thursday. High pressure will the set up to the east of the area into the weekend. A trough of low pressure is expected to move southeast across to the local waters over the weekend.
As of 7Z, a cold front is located just north of the CWA with dew points remarkably lower over ND. This front should reach our northeast CWA today with dew points dropping into the lower 50s.
The center of TS Harvey has moved onshore the Louisiana Coast, with an inverted trough extending NE from the low into Middle Tennessee.
Upper level trough over Ontario will move east and amplify. Upper level ridge over the northern Rockies will move over the area Thu. Upper level trough over the northeast Pacific will move across MAN/Northern Plains on Fri.
1127 AM EDT Wed Aug 30 2017 A ridge of high pressure will remain over the region today while an ocean storm passes well to our south. A cold front will move southeast through the region Thursday, and provide a chance of showers, especially in the mountains.
539 AM MDT Wed Aug 30 2017 Upper level ridge will be located near the Four Corners region today with northwesterly flow aloft across the CWA.
527 AM MDT Wed Aug 30 2017 Upper ridging continues across the western to central CONUS with northwest flow across the northern Plains into the upper Midwest. Weak waves will continue to ride the top of the ridge today bringing some chances for afternoon and evening showers and storms mainly to the western half of the CWA. Upper ridge axis will cross the area Thursday with a strong wave cross WY toward the CWA. Upper ridging will again set up across the western CONUS through the Labor Day weekend bringing dry weather to the region.
The drier airmass combined with some subsidence from high pressure building in over the region will limit convective development and coverage across the forecast area the remainder of the day with only an isolated shower or storm possible over inland locations along the sea breeze circulations late in the afternoon. With more sunshine on tap today temperatures will climb into the lower 90s along the coast prior to the onset of the sea breeze, with mid and upper 90s inland. High pressure building in over the region will support tranquil boating conditions over the Gulf waters the remainder of the day with light winds and slight seas with an onshore sea breeze component developing along the coast during the afternoon.
859 AM EDT Wed Aug 30 2017 A ridge of high pressure will remain over the region today while an ocean storm passes well to our south. A cold front will move southeast through the region Thursday, and provide a chance of showers, especially in the mountains.
An upper ridge over Florida will extend into the region. Tropical Storm Harvey will slowly lift northeastward from the coast of Louisiana into the lower Mississippi Valley. A warm front located over southern Georgia will slowly lift north. Precipitable water values will increase with the highest values in the CSRA, around 2 inches. Temperatures may be cooler in the CSRA due to higher chance rain/in situ wedge. A warm front over southern Georgia will slowly push northward during the day Thursday. Showers and thunderstorms will be likely Thursday into Thursday night as the warm front nears and the remnants of TS Harvey moved northwest of the cwa.
1140 AM EDT Wed Aug 30 2017 A weak cold front will move across the area early Thursday, but little if any rain is expected.
742 AM EDT Wed Aug 30 2017 A narrow north to south ridge of high pressure will slide east across Pennsylvania today. A strong cold front will likely push through the region on Thursday accompanied by a few afternoon or evening showers and thunderstorms.
706 AM EDT Wed Aug 30 2017 Weak high pressure over the region today and tonight will shift off the coast Thursday.
623 AM CDT Wed Aug 30 2017 As of 7Z, a cold front is located just north of the CWA with dew points remarkably lower over ND. This front should reach our northeast CWA today with dew points dropping into the lower 50s.
602 AM CDT Wed Aug 30 2017 Quiet weather will continue across the area as high pressure over the Midwest prevails through the end of the week. Surface analysis shows the center of the high over IA and fog is developing or has developed under the high. The high pressure over IA will move east through the day and into the overnight hours. But it will still greatly influence the nocturnal weather into the lower Missouri valley.
Surface dew points are in the 40s F into the lower 50s F over the plains. Still expecting most of the activity to be over the Front Range and east slopes, and possibly extending onto the Cheyenne Ridge and Palmer Divide late in the day. the ridge over the Four Corners region will weaken and flatten early Thursday as the flow aloft becomes westerly in response to a weak disturbance passing across WY and northern CO. At the surface, a weak lee side trough will be around on Thursday.
With less cloud cover today and limited convection, it will be a hot afternoon with highs in the low 90s along the coast and mid 90s over the interior.
High pressure will shift further south today. Most of the CAM guidance indicates sufficient instability will exist for convection across the higher terrain this afternoon and evening, with a secondary area of development near the Utah/Nevada border. With dry conditions at the low levels, these storms will have the potential for dry lightning and microburst winds after a period of hot dry weather. Cooler temps coupled with increased RH will allow for a better chance of wetting rain.
Light northeast winds as SFC flow out of high pressure across Ontario persists throughout the day. Upper level trough over Ontario will move east and amplify. Upper level ridge over the northern Rockies will move over the area Thu. Upper level trough over the northeast Pacific will move across MAN/Northern Plains on Fri.
Cooler weather with some spotty light showers today along the coast will remain cool but dry into tomorrow.
Conditions will improve later this afternoon and evening as the low associated with Harvey moves off to the north and northeast. The steadiest convection continues to be northwest of the low pressure center along the Texas and Louisiana border. Unfortunately, the latest short term guidance continues to have the highest QPF totals along and east of the Sabine River.
Light west to northwesterly winds will turn southerly by later this evening as high pressure over the Gulf returns in the wake of Tropical Storm Harvey. /issued 356 AM CDT Wed Aug 30 2017/ SHORT TERM (Now through Thursday): No significant changes to the short term forecast this morning as Deep South Texas remains between to large areas of high pressure, one across the Western CONUS and the other over the SE U.
Have made some small adjustments to the highs north of I-72/74. A weak cold front currently extending from Lake Superior westward into the Dakotas will slowly sink southward tonight, reaching the I-80 corridor toward dawn.
Some of the sites over East Texas and into Southwest Arkansas may see more brief periods of VFR, but expect the lower flight categories.
946 AM EDT Wed Aug 30 2017 Weak high pressure over the region today and tonight will shift off the coast Thursday.
Expect showers and thunderstorms to develop early this afternoon across the higher terrain of Malheur County Oregon and south of the Western Snake River Plain. Storm will diminish from west to east this evening as dry air moves in with the upper level trough and cold front. Cold frontal passage remains on track for early Thursday morning with breezy northwesterly winds expect behind the front Thursday afternoon. Increasing monsoon moisture across the region today in response to an incoming upper level trough and a strengthening southwest flow aloft. Thunderstorm development will spread north and east by this afternoon, with scattered thunderstorm development possible across the higher terrain of southwest Idaho and Malheur County. Dry air filters into the region by Thursday morning with the passage of the upper level trough accompanied by a surface cold front.
516 AM CST Tue Dec 19 2017 Water vapor imagery this morning showing a large upper low centered over central Canada with low amplitude trof across the northern tier states. cold air advection was spilling into the lower 48 with the leading edge of the front roughly from the upper midwest to the NE panhandle.
At sunrise, expecting temperatures ranging from the lower 20s NW to the mid 30s far SE. Flow aloft becomes zonal, allowing lee troughing to resume across eastern Colorado.