Aikyam-Lab/Synoptic-Bench huggingface dataset:
326 AM MST Sun Feb 25 2018 A couple of challenges are worth monitoring to in the short term forecast as the next upper level disturbance set to roll through the region today into Monday with the trough starting to flatten shortly thereafter.
413 AM MST Sun Feb 25 2018 Upper level analysis has broad trof across the central CONUS, with ridging along the east and west coasts. Weak secondary wave associated with the main upper trof will cross the region early this morning, bringing a slight chance for some upslope snow showers over the northern Hills. A weak warm front will shift east across the area, and allow temperatures to warm into the 30s, with some lower 40s possible. Models are showing a weak ridge bringing a brief period of warmer temps to the area towards the end of the week, before colder air and chances for snow return this weekend.
Yesterday's mid level trough that brought winds and dry air is pushing on toward the Great Lakes. The next trough is moving across the 4-corners and will move over the High Plains later today. Even lighter winds are expected Monday as short wave ridging moves overhead.
/issued 315 AM CST Sun Feb 25 2018/ Most locations have dipped near or below freezing early this morning with very dry air in place. Winds should not be as strong as yesterday, but temperatures will be slightly warmer. By Monday, an upper level trough will begin to dig along the West Coast of CA. Ahead of this storm, warmer conditions and moisture will return to the area as southerly flow increases.
Will continue to mention blowing snow today, but appears the main issue will be drifting onto road surfaces warmed by the sun, but still below freezing resulting in slick spots.
1040 AM EST Sun Feb 25 2018 Near record high temperatures possible again today ahead of a cold front.
A vigorous upper level trough is moving south along the British Columbia coast this morning with moisture streaming into the Pacific Northwest. Westerly flow aloft will favor heavy snow across the West Central Mountains and Boise Mountains ahead of the cold front. The cold front will move through the region late Sunday night and into Monday morning. Snow will taper off quickly behind the cold front from NW to SE on Monday, with isolated snow showers continuing across the central ID mountains and south along the NV ID/OR border through Monday evening. Breezy northwest winds are expected on Monday afternoon behind the cold front.
In addition to flooding, gusty west winds will accompany a cold front pushing east through the region this morning. Expect a period of dry weather tonight and Monday as high pressure takes control of the region.
Patchy fog/freezing fog will result in IFR/MVFR visibilities all sites through mid/late morning, with nwrn AR terminals having the greatest aviation impacts. /Issued 330 AM CST Sun Feb 25 2018/ Clear skies combined with saturated ground and light winds this morning has resulted in localized fog and freezing fog across parts of northeast Oklahoma and northwest Arkansas. Another upper trough to enter eastern Oklahoma late this afternoon or early evening, however limited moisture in place will likely limit impacts to increased cloud cover.
With high pressure filtering into the region through the day today, the sun will return and will see temperatures climb to around the 60 degree mark this afternoon with only some high clouds. Clear weather will continue tonight with lows dropping to around the freezing mark with again, only a few high clouds over the area.
526 AM CST Sun Feb 25 2018 As of early this morning, clear skies and cool temperatures are in place across the region as the strong lead wave and associated cold front have pushed well east of the region. While most of the day will be sunny, an increase in clouds will be noted this afternoon and evening as the base of the primary trough approaches the area.
/issued 557 AM CST Sun Feb 25 2018/ Early this morning the cold front that moved across the area yesterday had shifted into Southwest Mississippi, across Southern Louisiana and Southeast Texas. This in response to and approaching upper level short wave trough of low pressure in the Southwest flow across Mexico and the Gulf Coast States along with a rich moisture supply and added lift from strong upper level winds and the western end of the front returning North. This should move the showers and isolated thunderstorms our of the area providing a brief dry period for Monday and Monday night with brief ridging aloft and on the surface.
551 AM EST Sun Feb 25 2018 Rain will end today as a cold front crosses. A welcome period of dry and mild weather will take hold for the first part of the work week as high pressure takes control. Cold frontal passage occurs in the 12Z-18Z window today, with gusty winds developing behind the boundary with downward momentum transport. By this time, high pressure will start to nose in from the lower Ohio Valley, loosening the pressure gradient and allowing wind gusts to diminish.
Mild and dry for Mon through Tue night as high pressure ridge will be in control.
433 AM MST Sun Feb 25 2018 Mountain cameras show light snow falling in most of the higher mountains early this morning. We look for another 1-2 inches over the higher slopes generally above 9500 feet this morning, with a dusting to one half inch in valley locations. Some blowing snow will also occur over exposed mountain ridges and areas above timberline. The lower atmosphere will once again become well mixed late this morning into the afternoon with breezy conditions developing. Today's gusts in the lower elevations should generally peak at 25-35 mph, with the stronger gusts near the foothills and Wyoming border.
849 AM EST Sun Feb 25 2018 The region will be between high pressure to the East and an approaching cold front from the Northwest Today.
Fast moving upper trough will pass over the region this afternoon and evening. The NAM and to lesser extent the GFS are less aggressive but also have this signal as mid-level thermal trough passes across Kansas and Oklahoma.
Strong upper low moving southeast along the BC coast this morning. Satellite shows solid cloud cover out ahead of the low moving across the Pacific northwest. Expecting mostly snow for the mid and higher elevations with a mix of snow and rain at the lower elevations. Precipitation and winds will diminish overnight with the upper trough moving across the region.
557 AM CST Sun Feb 25 2018 Early this morning the cold front that moved across the area yesterday had shifted into Southwest Mississippi, across Southern Louisiana and Southeast Texas. This in response to and approaching upper level short wave trough of low pressure in the Southwest flow across Mexico and the Gulf Coast States along with a rich moisture supply and added lift from strong upper level winds and the western end of the front returning North. This should move the showers and isolated thunderstorms our of the area providing a brief dry period for Monday and Monday night with brief ridging aloft and on the surface.
As the main upper level trough and its amplified sinusoidal flow with its deep axis into the Four Corners region moves east, height falls across the region should increase winds further for the day on Thursday.
Flow has started to become southerly in the SW part of the region as overhead high pressure continues to slides east. /issued 345 AM CDT Wed Apr 11 2018/ A nearly picture perfect day in store across the region today as high pressure has become centered nearly directly overhead. The high will begin to shift off to the east by this afternoon, but with the exception of a few more clouds and slightly higher humidity, Thursday will be very pleasant as well.
Temperatures are in the lower 80s. A weak cold front will pass through the service area this afternoon.
Chattanooga Airport, TN 70 45 78 52 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 66 44 75 52 / 0 0 0 0 Oak Ridge, TN 67 44 77 51 / 0 0 0 0 Tri Cities Airport, TN 63 38 75 46 / 0 0 0 0.
Zonal flow aloft across the Rockies today transitions into southwest flow aloft on Thursday with the approach of the upper trough moving into the western U.
Southwest winds will begin to increase today, in advance of a major low pressure system approaching the West Coast. Winds will remain locally gusty tonight, before becoming even stronger on Thursday as a cold front moves into Arizona.
Another relatively mild night in the warm sector with a warmer than normal airmass and enough mixing to keep low temperatures above freezing. The cold front will advance eastward across our far western counties and with adequate low and mid level moisture, will help produce isolated to scattered showers and isolated thunderstorms in the afternoon. The potent cold front sweeps across our counties producing a breezy to windy overnight along with scattered to numerous showers of snow.
This event will occur behind a cold front that will move through eastern Oregon this evening, and southwest Idaho overnight. Expect MVFR to IFR conditions after 06z/Thu with mountain obscuration as a cold front moves through. Light surface winds this morning, becoming SW-SE 10-25kt during the afternoon, strongest in SE Oregon; shifting to the NW behind cold front tonight. Scattered showers and isolated thunderstorms continue along a weakening cold front. The convection extends from Baker County east into the Lower Treasure Valley and west central Idaho mountains. Shower coverage will increase tonight ahead of a cold front and lagging upper trough. Showers will continue in the afternoon associated with the upper trough, along with a slight chance of thunderstorms. Winds will increase considerably on Thursday as much cooler air pushes into the area behind the front.
High pressure prevails today with VFR conditions dominate all of Deep South Texas. /issued 401 AM CDT Wed Apr 11 2018/ SHORT TERM (Today through Thursday): The Atmosphere over Deep South Texas is very dry and stable with Surface and Mid level ridge overhead. Temperatures Thursday morning will be about 10 degrees warmer, mid 60s to near 70, with southeast winds becoming well established and the patchy low clouds keeping the low layers well mixed eliminating any radiational cooling affects.
Increasing south to southwest winds will increase today as high pressure retreats eastward.
813 AM EDT Wed Apr 11 2018 A cold front will sink south across the region today. /issued 351 AM EDT Wed Apr 11 2018/ A cold front is currently draped from Southwest Florida through the Space Coast into the Atlantic Ocean. Radar shows a line of showers that has developed along a trough ahead of the front stretching from the Treasure Coast into Naples.
851 AM EDT Wed Apr 11 2018 Kentucky Mesonet and other automated sites indicating that temperatures have warmed above freezing for almost all sites, thus will allow the cold headlines to expire at 9 AM, on schedule. Temperatures should rise up into the low/mid 60s across the region. Under mostly to partly sunny skies, expect highs to reach the low to mid 60s over southern IN/central KY this afternoon. This strong southerly flow will push high temps into the low to mid 70s.
At the surface, low pressure will develop over NE today and then track newd from sw WI to central Lake MI late tnt. Temps are expected to warm for much of the area late tnt as the warm front arrives on swly winds. Medium In the wake of the departed low, a weak ridge of high pressure slides in, though is transient.
618 AM CDT Wed Apr 11 2018 Surface pressure falls underway as flat upper ridge axis moving overhead and to the east later today. Today, the weak upper level ridge over the area will give way to more zonal flow as a negatively tilted upper level trough approaches the West Coast. Today into tomorrow, in advance of the trough, low and mid-level southwesterly flow increases, a surface lee side low deepens in NE CO, and surface gradients tighten. Tomorrow, as the upper trough traverses through the western USA the area will really start to heat up (pun intended). Gradients will tighten even more as heights fall and very warmer air is advected across the region.
08Z Surface analysis this morning places a 1023 mb ridge of high pressure centered over portions of the Tennessee and Lower Mississippi Valleys. GOES-16 Satellite trends indicate some mid/high level clouds over Missouri moving southeast within northwest flow aloft along the eastern periphery of an upper level ridge axis. As of 3 AM CDT, temperatures across the Mid-South range from the lower to middle 30s along the Tennessee River and North Central/Northeast Mississippi and upper 30s to lower 40s along and west of the Mississippi River. Surface and upper level ridging will continue to build across the Lower Mississippi Valley today into Thursday.
841 AM EDT Wed Apr 11 2018 High pressure will build overhead Today, with drier air advecting into the region.
A cold front is approaching the coast and will reach the Cascades by midday to early afternoon and then spread across eastern Washington and Oregon late in the afternoon and overnight. There will be some increasing westerly winds behind the front with some 15 to 25 mph winds throughout the Lower COlumbia Basin overnight.
Strong southwest winds will develop today, in advance of a low pressure system approaching the West Coast. Winds will remain locally gusty tonight, before becoming even stronger on Thursday as a cold front moves into Arizona.
640 AM CDT Wed Apr 11 2018 Ridge of high pressure currently extending from the Ohio River Valley to Texas will continue to shift eastward today. Low pressure tracking from Nebraska this afternoon to northern Lake Michigan by Thursday morning will remain north of central Illinois. Due to continued strong southerly winds south of the low track, overnight lows will be considerably warmer than they have been in recent nights. with readings remaining in the lower to middle 50s. Breezy and even warmer weather will be on tap for Thursday, as high temperatures soar into the 70s.
Since temps this morning were a bit warmer than expected, the issues with any Freezing Rain should be minimal if at all from Opheim to Poplar and northeast. While parts of the northern zones could have a period of light mixed precipitation this morning with temperatures near freezing, the main band of rain will be across the southern zones this morning as most of the moisture stays to the south of the Missouri River. An upper trough moves inland from the Pacific tonight and Thursday. Upper trough moves into Montana and Wyoming Thursday Night with a closed upper low forming over Wyoming.
/issued 345 AM CDT Wed Apr 11 2018/ A nearly picture perfect day in store across the region today as high pressure has become centered nearly directly overhead. The high will begin to shift off to the east by this afternoon, but with the exception of a few more clouds and slightly higher humidity, Thursday will be very pleasant as well.
523 AM MDT Wed Apr 11 2018 Current surface analysis shows low pressure over northwest MT, with warm front extending southeastward across MT into SD. A large trough sits off the Pacific NW coast. Another very mild day is on tap, especially from northeast WY to southern SD, as warm front remains across northwest through southeast SD through the early afternoon. Breezy west to northwest winds will develop toward the afternoon as the low passes over and east of the area.
Some light radar returns over the Devils Lake basin area may be reaching the ground as drizzle or freezing drizzle, but otherwise generally dry with slowly increasing cloud cover as precipitation moves into north central ND around mid day. a bit less in the immediate RRV due to slightly warmer temps. Freezing precipitation per HREF looks negligible in our area so removed mention. Sat - Tue Longwave trough over Hudson Bay will shift into eastern Canada. Longwave ridge over western Canada will shift into central Canada by Tue. VFR conditions to start the day but as moisture spreads east during the afternoon and evening ceilings will lower into the low end MVFR range with areas of IFR cigs developing tonight as low level moisture increases.
703 AM EDT Wed Apr 11 2018 VFR expected to continue through the period with high pressure in control.
a bit less in the immediate RRV due to slighly warmer temps. Freezing precipitation per HREF looks negligble in our area so removed mention. Sat - Tue Longwave trough over Hudson Bay will shift into eastern Canada. Longwave ridge over western Canada will shift into central Canada by Tue. VFR conditions to start the day but as moisture spreads east during the afternoon and evening ceilings will lower into the low end MVFR range with areas of IFR cigs developing tonight as low level moisture increases.
Depending on how much our dewpoints fall, temperatures will likely drop into the lower 60s, with a few spots dropping into the upper 50s.
This quiet area is coincident with an inverted trough axis that is very slowly moving westward. This may in part be explained by a band of cloud cover near the trough axis that limited surface heating and had persisted through much of the day. Forcing from the inverted trough will likely keep shower activity going through the overnight hours tonight, before another round of storms gets going by mid-day Sunday. With that said, the inverted trough axis is expected to be over Yavapai County on Sunday, so if tomorrow morning's satellite imagery reveals a similar band of cloud cover, it may be a bit quieter there than currently anticipated.
Relatively dry and slightly cooler northeasterly flow should limit instability through the rest of the afternoon and preclude further convective development into the evening.
131 PM EDT Sat Jul 29 2017 High pressure builds in from the northwest while low pressure tracks well south of the Gulf of Maine, resulting in a dry and mostly sunny weekend.
218 PM EDT Sat Jul 29 2017 High pressure will maintain dry and seasonable weather through the start of the work week. Upper low continues to pivot off to the east with the bulk of the moisture now south of the forecast area. Building ridge of high pressure will follow in behind this, with dry conditions expected through the rest of the day and overnight. High pressure will remain in place through the start of the week.
340 PM EDT Sat Jul 29 2017 High pressure will build across the midwest and Ohio Valley the early in the week, then slide off the southeast coast mid week.
110 PM EDT Sat Jul 29 2017 Pleasant conditions expected through the weekend as high pressure building into the region will keep the North Country dry and seasonably cool. High pressure continues to build into the region and should keep the North Country under quite pleasant conditions through the weekend.
305 PM CDT Sat Jul 29 2017 High pressure was over the region leading to partly to mostly sunny skies for most areas this afternoon. Cooler temperatures aloft have allowed for enough instability to cause showers in far northern Minnesota.
312 PM CDT Sat Jul 29 2017 Currently, semi-permanent anticyclone remains anchored over the Desert Southwest into the Southern Plains region. Ridging is evident over the spine of the Rockies with northwest flow into the Great Lakes region along with main PFJ well north into Canada. Low level dry air continues to work into northeastern KS along with an area of modified Canadian high pressure off to the northeast of the area. This is resulting in pleasant temperatures into the 80s and dewpoints in the low 60s and even some upper 50s here and there. With slight easterly breeze and mainly dry air advection in place in the low levels, temps remain in the lower 80s for today and Sunday as well.
1219 PM CDT Sat Jul 29 2017 High temperatures today will continue to be cooler than normal for this time of year given a good deal of cloud cover. Highs should generally range from the lower 80s over south central Nebraska to the mid 80s across north central Kansas.
Large scale pattern chg ascd with developed trough moving S into the state will significantly increase Lcl rain chcs early in the week. Showers and embedded storms will become likely early Sunday across Nrn sections and spread south across the remainder of Central FL during the day Sunday as the frontal trough settles Swd into the Central FL area.
336 PM EDT Sat Jul 29 2017 An approaching frontal boundary has helped push the influence of Atlantic high pressure to the east of South Florida.
324 PM CDT Sat Jul 29 2017 High pressure will stay in control over the region through Sunday afternoon.
Isolated-scattered showers/tstms are possible this PM across GDP-Davis Mtns, respectively, as these areas are in the gradient of a mid level theta-e ridge. Subtropical ridge to the n will continue to mostly preclude the development of convection until late Sunday PM when a low level boundary back doors into the PB. This convective potential will occur within said ridge, which of course is typically inhibitive.
336 PM EDT Sat Jul 29 2017 Dry with pleasant temperatures on Sunday as high pressure builds in from the northwest.
325 PM EDT Sat Jul 29 2017 An upper level trough will cross central NC this evening, and exit the region overnight.
Still, showers and storms will initiate across the higher terrain first, then migrate into the plains.
130 PM EDT Sat Jul 29 2017 An upper level trough will cross central NC this evening, and exit the region overnight.
225 PM EDT Sat Jul 29 2017 Upper-level low pressure system will cross over the area this afternoon and move offshore tonight into Sunday. High pressure builds overhead Sunday through much of the week.
354 PM EDT Sat Jul 29 2017 High pressure will remain across the area into Sunday with fair and seasonably mild weather.
Another pleasant day is on tap with high pressure centered over the western Great Lakes. The ridge axis locates right over southern Wisconsin tonight, with light winds, clear skies, and good radiational cooling. High pressure across the Upper Great Lakes and Wisconsin. Forecast soundings show drier air in the lower levels, although just enough for few fair weather cumulus. Northwest upper flow across southern Wisconsin with a ridge across the plains. High pressure across the upper Great Lakes and Wisconsin. Forecast soundings show a lot of dry air in the lower levels although just enough for scattered fair weather cumulus. With the high across the area tonight, some river valley fog possible, mainly in the Wisconsin river valley.
Weak SFC front is forecast to slowly move south towards and eventually through the area tonight as an upper TROF continues to dig over the ERN CONUS. SUN morning low temperatures will be notably cooler, especially over interior E TX/Central LA where the difference could be as much as 10 degrees lower than the balmy near 80 degree readings observed this morning.
1241 PM CDT Sat Jul 29 2017 After some early morning valley/bog fog, expect mostly sunny/clear skies today into tonight as high pressure continues to dominate the regional weather pattern.
/issued 326 AM CDT Sat Jul 29 2017/ Guidance has trended a degree or two warmer this run. A cold front has moved across the Midsouth and is currently approaching Birmingham, AL and Jackson, MS. Temperatures are 3-5 degrees cooler than they were at 3 am yesterday morning and will likely be another 5-10 degrees cooler tomorrow morning as a cooler drier airmass moves into the region.
345 PM MDT Sat Jul 29 2017 Noticeable spin seen on radar this afternoon in southwestern Colorado as a midlevel low pressure system treks across the state. This low, acting in tangent with monsoonal moisture streaming in from down south, has produced another day of scattered showers and thunderstorms.
The cold front that produced scattered showers and storms with heavy downpours yesterday was lying across the deep south this morning. High pressure centered over Wisconsin was pushing dry and cooler air into Middle Tennessee with north northeast breezes. ALong with the cooler temps, the summer breeze at 10-15 mph with some gusts around 20 mph is sure to make you feel fine.
Low clouds from this morning have burned off and now cumulus is bubbling up over the higher terrain along and east of the Cascades.