Aikyam-Lab/Synoptic-Bench huggingface dataset:
Forecast soundings show potential for wind gusts of 25 to 30 knots from mid-morning through the early afternoon during time of tightest pressure gradient as low pressure passes through southern Canada. Expect mid-high clouds to return after midnight tonight due to upstream warm air advection into the northern Plains ahead of approaching low pressure trof. Breezy southwest winds will carry warmer low level air into southern WI.
The region sees warmer temperatures overnight with westerly winds bringing in warmer air near the surface as skies become partly cloudy. warm air aloft moves southeast across the forecast area during much of the night with cooler air moving in quickly behind as a cold front approaches. On Wednesday the cold front moves through with 3-6mb 3 hour pressure rises in the morning through early afternoon.
Warmer airmass out west will also get advected east as winds turn westerly. With 925mb winds increasing a bit overnight, expect an uptick in speeds again along and just to the east of the ridge line. If precip is all snow, this low has the potential to produce upwards of a foot of accumulation.
352 AM CST Tue Dec 20 2016 Across the region this morning, water vapor imagery depicts a split level flow pattern with the southern jet streaming moisture eastward ahead of an upper low off the Baja California coastline. Further south, more snow cover and weaker winds aloft result in cooler temps with readings generally around 40 degrees. Lows tonight are a few degrees warmer under clear skies with readings in the lower 20s.
311 AM CST Tue Dec 20 2016 Water vapor shows a deep upper low w of Baja Calif with westerly flow aloft across W TX. The next cold front is scheduled to arrive before midnight Thur and will bring an abrupt end to the above normal temps. Highs will mostly be in the 40s, it could be cooler though where/if precip occurs. The upper low w of Baja will lift and fill passing to the n on Fri and the assocd increased sw-w low level winds will serve to warm temps close to normal and even moreso on Christmas Eve. There is the potential for windy/very windy and cooler conditions Christmas Day as the trof passes to the n.
1215 AM EST Tue Dec 20 2016 Though quite cold overnight, high pressure will give us moderating temperatures and dry weather for the next couple of days.
/issued 1014 PM CST Mon Dec 19 2016/ Temperatures are still just above freezing along I-20 with the cirrus in and out for a while.
Gusts in the higher terrain have reach near 60 mph, with stronger winds north. Mozley Updated to adjust overnight lows for tonight, especially along the lower Arkansas River Valley. Warmer temperatures are anticipated during the next 24 hours(when compared to the very cold temperatures of the previous 48 hours or so), although locations such as portions of the San Luis Valley and sections of the snow covered lower Arkansas River Valley will still struggle with some cold temperatures.
The cold front is forecast to move through mainly dry although will include thickening clouds Tuesday night and Wednesday.
Updated to expire the high wind warning for SW Phillips Co. Temperatures everywhere above freezing at the end of the day, so removed blsn wording from forecast, since the sun and warmth put a crust on top of the snowpack. Looking upstream, a fast moving ridge/trough couplet lie over the British Columbian coast and stretch back into the Gulf of Alaska. Wednesday: Next ridge will move through the area with a chinook directly behind it. Conditions somewhat similar to today with a warming trend may be possible except with less wind and no PoPs as the ridge should be dry.
We will get a cold front moving through the area on Wednesday, but this airmass will be of Pacific origin and only temper the seasonable temperatures.
318 AM CST Tue Dec 20 2016 Some gentle ridging will continue to build into the region which will allow WWA to continue.
Arctic high pressure continues to settle over the Mid South tonight. The axis of the Arctic surface pressure ridge will settle along and north of the I-40 corridor. Upper level ridging will build over the southeast states, in response to a deep longwave upper low forming over the Great Basin.
/issued 245 PM CST Mon Dec 19 2016/ WV imagery shows the west coast trough has closed and pinched off from the main flow, and set up off the coast of Baja. This has resulted in SW flow aloft over West Texas and Southeast New Mexico, which is entraining subtropical moisture/high clouds thru the base of the trough and over the region. This is putting a damper on afternoon highs, but temps have nevertheless climbed above freezing as sfc flow has veered around to SE. Clouds are forecast to thin out some overnight, but lows should bottom out considerable warmer than last night.
248 AM EST Tue Dec 20 2016 High pressure through Wednesday.
Dry weather will continue through Tuesday as weak high pressure builds over Arizona with cold overnight lows across much of the high country. The water vapor loop is showing a large area of low pressure off the Baja Coast this afternoon. This low is becoming cut off from the general west to east flow and allowing weak high pressure to develop over Arizona. The closed low will begin to move northward towards the southern California Coast on Wednesday.
A ridge of high pressure remains over the central US resulting in dry conditions and temperatures near to slightly above normal for the next couple days. An upper trough will move through the Northern Plains Tuesday night and Wednesday. This is a progressive open trough and will bring a cold front across Tuesday night. Due to deep mixing, high only slightly cooler in the upper 30s to lower 40s despite 850 mb temperatures falling up to 4C through the day.
1014 PM CST Mon Dec 19 2016 Temperatures are still just above freezing along I-20 with the cirrus in and out for a while. Meanwhile at the surface, high pressure is firmly entrenched across western Arkansas with winds expected to go calm tonight across much of the I-30 corridor. Farther south, temperatures will generally run in the lower to mid 20s which is just above our hard freeze criteria. Temperatures will recover quite a bit more on Tuesday afternoon compared with the last few days, ending up about 10 degrees warmer in the upper 40s to lower 50s.
Some cooler drier air will move in behind the boundary late tonight and Tuesday helping to erase any fog, but a lot of the low clouds will linger through much of the day Tuesday.
338 AM CST Tue Dec 20 2016 Current water vapor showing a vigorous mid-level trough moving through Manitoba and the Dakotas with our area under veil of mid/high cloud in warm air advection/isentropic ascent ahead of the wave. With our area staying in the warm sector and ample sunshine, look for highs in the lower to middle 30s. Attention then turns to another low pressure system moving through Canada with a warm front passing through our area. Will have to keep an eye on the slight possibility of some freezing drizzle on the backside of the snow band this afternoon/evening up across that area with loss of cloud ice.
349 PM CDT Fri Apr 7 2017 As the high currently over SE TX moves off to the east, we should start to see a more southeasterly low-level flow develop tonight/ tomorrow. This onshore flow is expected to persist on through the weekend along with a slightly flattened upper ridge. This combina- tion should make for warmer temperatures/slowly increasing humidi- ties this weekend. All of this appears to be asso- ciated with a slow moving cold front from the NW which is progged to stall over SE TX/near the upper TX coast before moving back up north/washing out. Best dynamics should be well north of the area (near the main upper low) but the increased POPS (and clouds) may help in cooling temps a few degrees during this timeframe.
/issued 424 AM CDT Fri Apr 7 2017/ Upper ridging will become more defined across eastern NM today before apexing the local area tonight. Height rises of around 30 meters at 500 mb spell welcome thickness gains, further aided by 15- 20 mph southerlies ahead of lee troughing in the High Plains of NM. With the thermal ridge poised just W-NW of our western counties, our modest dewpoints in the 30s and 40s will remain largely unchanged today within a very modified fetch from the Gulf. The upper level ridge will move east of the area Saturday with southwesterly flow aloft.
Very dry conditions and above normal warmth will stick around through Saturday out ahead of a cold front's passage. The cold front will push its way across the region late tonight through Saturday afternoon. Along with the precipitation chances later in the period, these cooler/higher moisture conditions will considerably reduce grassland fire danger indices. The aforementioned cold frontal passage on Saturday should be a dry frontal passage, and initially could pack a bit of wind gustiness punch post-frontal, especially over north central South Dakota.
Strong low pressure over New England will move on to the east. High pressure over the middle Mississippi valley will move east across the Ohio valley late tonight and to the middle Atlantic coast over the weekend.
634 PM EDT Fri Apr 7 2017 Low pressure in the Northeast States and high pressure building across the Lower Mississippi River Valley will cause dry northwest flow over the region, and breezy winds this evening.
233 PM MDT Fri Apr 7 2017 Upper ridge axis over the central high plains today will shift eastward by Saturday with southwest flow aloft replacing it. At the surface, trough will move out of northeastern Colorado tonight ending up near a McCook to Gove line by Saturday afternoon. West of the trough, southwest winds will increase in the afternoon and dew points will fall due to downsloping.
338 PM EDT Fri Apr 7 2017 Low pressure over New England will continue to move rapidly northeast away from the area this evening. This will allow a ridge of high pressure to build toward Ohio from the lower Mississippi Valley overnight.
357 PM EDT Fri Apr 7 2017 High pressure will settle in the Ohio Valley tonight and move east Saturday night.
A big warm-up over the weekend as an upper ridge builds over the Southeast states and surface winds become southerly. The ridge will keep a relatively dry and stable air mass over the area, so no rain in the forecast. A weak upper trof will pass to the north of Alabama Saturday night which could bring some mid level clouds into the area.
Warm air advection will continue in the lower atmosphere through the period as the upper ridge continues building in through tomorrow morning. Overnight lows tonight will be 15-20 degrees warmer given the southern breeze that will continue (albeit weaker than during the day). EML plume over the Plains will head east Saturday with low level thermal ridging building into Minnesota during the afternoon. Bias corrected grids from those models were particularly useful in painting the warmer temperatures where the thermal ridging should be located during the mid afternoon.
Lowering snow levels will bring snow to the higher elevations of the interior.
Temperatures should recover nicely, and will hedge just a bit warmer than initialization guidance for maxes.
635 PM EDT Fri Apr 7 2017 High pressure will settle in the Ohio Valley tonight and move east Saturday night.
116 PM EDT Fri Apr 7 2017 Low pressure over New York will slowly move northeast today. A ridge of high pressure will shift east across the region Saturday. A ridge of high pressure will push east across the area late tonight and Saturday providing dry wx and allowing temps to moderate back close to normal for all but NW PA where upper 40s will probably be as good as it gets.
Rather weak ridge of high pressure will move east by 00z with light winds all day. This evening a developing warm front over the northern Plains along with slightly stronger mid to upper level winds preceding the next upstream wave.
Nwly winds will gradually diminish this afternoon and evening and become sly as the ridge axis passes. With expected temps in the upper 30s and dewpoints in the lower 30s, believe frost will be more difficult to develop. Otherwise, with sly winds increasing on Sat and thermal ridge pushing 10C to 12C 850mb temps into the area, expect temps to reach the 70s.
359 PM MDT Fri Apr 7 2017 Current surface analysis shows warm front from western ND through central SD, with warm air in place across the area. Upper level analysis shows broad ridge axis centered across the plains. A cooling trend will take place into the weekend as a cold front over ID and eastern NV moves quickly east across the Rockies this evening and across our area late tonight and Saturday morning. The warmest temps on Saturday will be to the south and east of the Black Hills on Saturday, with highs across the area ranging from around 60 across northeast WY and the higher Black Hills to around 80 across south central SD.
Surface analysis this afternoon places a 1023 mb ridge of high pressure over the Lower Mississippi Valley. A ridge of high pressure combined with light to nearly calm winds will be conducive for excellent radiational cooling tonight across the Mid-South. The lowest temperatures occurring mainly across areas towards the Tennessee River in West Tennessee and Northeast Mississippi where readings in the lower to middle 30s are expected to occur.
The high pressure will continue to move east tonight and Saturday allowing for increasing southerly flow and strong warm advection. The 850 mb temperatures over central Iowa was in the 2-4 C range at noon today and will be near 15c around noon Saturday as the upper ridge arrives and extending from Mexico into Ontario. Temperatures tonight will be in the low to mid 40s with highs on Saturday in the 70s.
239 PM EDT Fri Apr 7 2017 Hydro Drier and warmer weather is expected today with highs around 50.
The mdls try to develop some showers as well in the high country for Saturday aftn, but think most of this will be in the northwest corner primarily affecting zone 31.
The short-term forecast is expected to remain pretty quiet with a nearly persistence forecast expected as mid-level ridging remains in place. Highs Saturday will top out in the lower 80s to lower 90s.
606 PM EDT Fri Apr 7 2017 High pressure will build overhead through the weekend, bringing the return of dry and seasonable conditions. High pressure building through the column will continue the drying trend overnight, clearing skies completely by the pre- dawn hours. Upper level ridge will settle overhead through the start of the week with dry conditions expected.
Some cirrus moving across with the weak wave and downstream of deep upper low moving into Pacific Northwest. After temps around freezing this morning, early afternoon values already in the lower 60s. May have some cirrus into the evening, but winds and continued warm advection on the strong jet should keep lows 15-20F warmer. Still 850mb temps will be around 10C warmer for highs to push into the 75-82F range.
A deep upper trough is draped along the eastern coast of the United States. A gradual warming trending will begin this weekend as the upper trough shifts east and weak upper ridge begins moving in from the west.
119 PM EDT Fri Apr 7 2017 Low pressure in the Northeast States and high pressure building across the Lower Mississippi River Valley will cause dry northwest flow over the region, and breezy winds this evening.
Southern lobe of the central CONUS high pressure ridge will sag SE over the next 24hr, and extend from the NE GOMEX to offshore the SE seaboard by sunset Saturday. High pressure ridge over the deep south will only slide slowly to the east as trough aloft over the eastern seaboard shifts gradually offshore.
Currently, upper level ridge axis aloft moving east across the Northern Plains. Ridge axis continues east allowing for southwesterly flow aloft to develop across the region tonight. As this occurs a cold frontal boundary will move into western ND around 03Z and then proceed east-southeast through 12Z. Mild but slightly cooler temperatures with the cold FROPA Friday night. RH values in the 20s and 30s with dry air accompanying high pressure. This is also where RH values fall into the low/mid 20s so will need to see how models trend over the next 12 hours in case fire weather headlines become needed.
/issued 351 AM CDT Fri Apr 7 2017/ A quiet and cool morning for the forecast area as high pressure will fully be in place over the southeast over the next few days. Expect dry and cooler temperatures for the region through Saturday. Expect highs today to be in the lower 70s and overnight lows to dip well into the lower 40s across the northshore.
628 PM EDT Fri Apr 7 2017 A dry and stable environment sustained under building high pressure will ensure quiet aviation conditions hold through the first half of the weekend. Skies to remain clear across the lowest 10 kft through the period. Thinking that recent rains will actually have an impact on temperatures and generally shaded a degree or two warmer on lows.
335 PM EDT Fri Apr 7 2017 Deep upper trough will continue to drift to the Atlantic coast tonight. with a strong upper ridge moving into the MS valley during the short term. The northeast corner should see some lows in the lower 30s. Relative humidity values dip into the lower 20s in some areas during the afternoon.
Conditions will improve from west to east through this evening as a cold front moves away from the area. Showers and stronger winds will be slowest to improve over the higher elevations of southwest MT.
628 PM EDT Fri Apr 7 2017 With clearing skies, diminishing winds, early evening temps only in the lower to mid 50s and dew points (where still mixed) in the lower to mid 20s, have lowered forecast mins to the mid to upper 20s in the coldest valleys. Mostly clear skies are already in place across the southwest part of the forecast area and high pressure building east from the MS valley will bring clearing skies to the remainder of the area tonight. With the ridge axis just moving over us later tonight should not have too much of a ridge valley temperature difference though. With high pressure shifting east of the area Saturday afternoon a significant warming trend will begin. The ridge valley temperature split for Saturday night is not something the blended data used for initialization handles very well.
330 PM CDT Fri Apr 7 2017 The center of a broad high pressure system that brought seasonably cold air to the region will gradually settle into the area tonight. As a result, winds will decrease this evening as the high moves overhead and daytime mixing ceases. Further temp decreases into the lower to mid 30s will are likely for many locations in the area, but especially those most susceptible to efficient radiational cooling (i. (Saturday through Saturday night) Issued at 300 PM CDT Fri Apr 7 2017 High pressure will be present over the region in the morning, but will gradually shift to the east and south of the area by Saturday night.
High pressure building over the area from the west will bring calm winds around midnight.
The ongoing dry weather pattern will continue through the early part of the weekend as weak upper level ridging moves eastward across the Western High Plains into the Central Plains. Low temperatures will continue an upward climb tonight as a prevailing southerly flow draws warmer air into the high plains, not to mention increasing moisture somewhat and raising surface dewpoints. Look for lows only down into the 40s(F) across west central Kansas to the lower 50s(F) in south central Kansas.
WV imagery indicates a weak upper level ridge of high pressure transitioning eastward across the Western High Plains. Near the surface, a lee side trough of low pressure is strengthening across eastern Colorado. Mostly clear skies and dry conditions are expected through tonight as an upper level ridge builds above the Rockies. A trough of low pressure will be found across eastern Colorado leading to breezy southerly winds today then shifting to the southwest tonight.
234 PM EDT Fri Apr 7 2017 As low pressure moves north of New England, a trailing weak low pressure trough will move across this afternoon.
Water vapor imagery this morning shows a large and deep upper level trough over the northeast quadrant of the nation and continuing to move off to the northeast. Speaking of surface observations, temperatures are still generally in the 40s across the area although its likely some upper 30s are occurring in the higher terrain and normally colder locations. Otherwise, high pressure both on the surface and aloft will build into the area and dominate through the short term period resulting in generally clear skies and dry conditions. Northwest flow will keep temperatures slightly cooler than normal today but southerly flow returns Saturday and temperatures will rebound accordingly.
A dry airmass remains entrenched over the state today as an upper level ridge migrates across the state. The warmest temperatures so far this week should occur this afternoon as the ridge axis slides east of the mountains and winds at low and mid levels become increasingly southwesterly, enhancing downslope warming from the foothills eastward. SW flow aloft will increase on Sat ahead of an upper level trough which will affect the area Sat night into Sun. By Sun night the upper level low will move into the nrn and cntrl plains with drier air spreading across the area. On Tue the flow aloft will become more WSW in advance of a wk upper level trough which will move across Tue night into early Wed. By Thu an upper level ridge will begin build over the area with dry conditions expected.
641 PM EDT Fri Apr 7 2017 Low pressure over New England will continue to move rapidly northeast away from the area this evening. This will allow a ridge of high pressure to build toward Ohio from the lower Mississippi Valley overnight.
Overnight, the low level jet will increase across the area, resulting in wind gusts developing again after 06Z at KSJT and KABI.
1123 AM MDT Fri Apr 7 2017 Strong upper ridging across the central CONUS will continue to bring mostly sunny skies to the area today. Upper trough will cross the western CONUS Saturday with active SW flow aloft developing. A cold front crossing the area will bring cooler temps to NE WY and NW SD.
331 PM CDT Fri Apr 7 2017 Upper level high pressure will continue to dominate the Central and Southern Plains through Saturday which will result in warm and rain-free weather.
We are not looking for freezing temps generally, but it still might occur in some isolated, sheltered locations. Mid level ridging will be in force at the same time.
325 PM CDT Fri Apr 7 2017 Broad upper level ridging building into the central U.
Showers will linger on Saturday with a weak upper trough over the area.
107 PM EDT Fri Apr 7 2017 Low pressure over New York will slowly move northeast today. A ridge of high pressure will shift east across the region Saturday. A ridge of high pressure will push east across the area late tonight and Saturday providing dry wx and allowing temps to moderate back close to normal for all but NW PA where upper 40s will probably be as good as it gets.
Winds will be light and vrbl areawide through tonight, becoming southeasterly 5-10 KT at LCH/BPT after 14Z as the high begins to move east. Surface analysis showing high pressure ridging through the eastern plains and advancing eastward into the Mississippi valley behind a deep cyclone moving through the northeast CONUS. Similar pattern aloft yielding a dry north to northwest flow through the low and mid levels across the forecast area, and more westerly aloft. A gradual increase in low level moisture will be incoming for the weekend as high pressure slips off to the east and southerlies return. With moisture remaining confined to just the low levels through this time-frame, no rain expected.
Next short wave moving into far NW Montana will move east-northeast into central Manitoba Saturday with a trough/weak cold front moving through the area during the day along with a band of mid level cloud cover. Lighter winds Saturday as trough/front moves through. A bit cooler though far NW fcst area.