Aikyam-Lab/Synoptic-Bench huggingface dataset:
/issued 1106 AM CDT Mon Mar 16 2020/ Regional 88Ds show light returns moving ewd across ern/srn TX which have mostly been virga so far this morning with few sfc obs showing any rainfall (showers have been reported primarily in the higher returns, mainly across nern TX so far). /issued 535 AM CDT Mon Mar 16 2020/ 12Z Tafs Only ceiling restrictions now are at AEX with 300 ft overcast behind the cold front. Surface analysis suggests cold front near the coast early this morning and will be advancing into the near coastal waters and stalling.
951 AM MDT Mon Mar 16 2020 The low pressure system along the northern California coast will maintain a mild southerly flow across Utah today. This low pressure will slowly drift east into the Great Basin and bring the potential for widespread precipitation over Utah midweek. Morning satellite imagery and objective analysis show an upper low spinning just off the California coast, which is inducing dry and mild southwesterly flow downstream across the forecast area.
233 PM MDT Mon Mar 16 2020 The main weather feature impacting weather across eastern Idaho for much of this week will be a slow-moving area of low pressure. Currently located off the northern California coast, the low will sink south towards the San Francisco Bay Area over the next 36 hours or so before eventually moving inland into northern Nevada by mid- week. The low will elongate later tonight and the cyclonic flow around this feature will spread moisture and cloud cover into the area as we get towards daybreak Tuesday. Snow levels remain high so any frozen precip will be limited to the higher elevations while lower elevations can expect rain. As the week progresses, this low will still impact local weather as associated moisture will still stream across eastern Idaho.
1137 AM MDT Mon Mar 16 2020 Updated grids for fog and freezing drizzle this morning. Expect the freezing drizzle to diminish over the next hour or two. A cold front continues southward across the forecast area early this morning. Tuesday will be mainly dry and warmer as an upper ridge builds to the west, with highs ranging from the lower 40s to lower 50s.
1115 AM MDT Mon Mar 16 2020 WV/IR imagery loop looks almost identical to previous 24 hrs with a upper low stalled off the northern CA coast and downstream ridge axis from the ID/MT border through west central CO and northern NM. Lowest visibilities ranged from 1/2 to 2SM across much of the NE Panhandle with temperatures around the freezing mark. It will be a bit warmer to the south of the front with upper 40s to low 50s. Models concur on the southeast motion and expansion of the upper low into the Great Basin early this week. This will induce upper ridging along/east of the Front Range with moderating temperatures.
1238 PM EDT Mon Mar 16 2020 High pressure cresting overhead will move east of the area tonight for fair weather today. A fast moving system will bring rain and snow to the region Tuesday with a few inches of snow in the higher terrain.
The progs are awfully aggressive in eroding the low cigs too quick especially given the proximity of the warm front that will lift N into the Srn zones this afternoon, suggesting the warmer temps that were previously advertised. This front should eventually become stationary again this evening with the loss of mixing, and may even be nudged a bit Swd overnight in response to weak sfc ridging over the area.
Across our eastern zones, warm advection appears to drive a warm front north during the afternoon. WBZ is fairly low (~6-7kft) though, given presence of CAPE in the hail growth region, at least small hail will be possible though storms where the juxtaposition of CAPE/SHEAR is maximized, some larger stones could form especially across our northeastern quarter (based on warm front position) along with a non-zero tornado threat.
LW Chattanooga Airport, TN 53 68 53 73 62 / 70 40 10 50 50 Knoxville McGhee Tyson Airport, TN 53 64 51 73 61 / 70 70 10 30 50 Oak Ridge, TN 52 64 50 73 60 / 70 70 10 30 60 Tri Cities Airport, TN 49 62 44 67 56 / 70 70 10 20 60.
359 PM EDT Mon Mar 16 2020 A mid-level anticyclone will center across western Cuba and the western Caribbean Sea. This anomalously strong ridge, with geopotential heights averaging 2-3 standard deviations from the mean, will support low-level ridging whose axis extends southwest from the coastal Carolinas through northern Florida. Lows tonight will range from around 60 over western inland areas to the lower/mid 70s along the eastern beaches. High pressure remains the main synoptic feature through the extended across the southern peninsula of Florida.
231 PM MDT Mon Mar 16 2020 Expect drier conditions throughout the region with light winds and highs ranging in the 20s in north central Montana and the low 40s in parts of the southwest through Tuesday morning.
An upper level ridge will maintain its hold over the Gulf of Mexico through the near term period. A cold front will then move over the upper Mississippi, Ohio, and Tennessee Valleys and advance towards the deep south by Tuesday evening. Highs will generally be in the lower to mid 80s today and tomorrow, with lows overnight tonight in the lower 60s.
Water vapor imagery shows weak ridging shifting ewd in response to lowering heights over the swrn CONUS ahead of our next Pacific storm system. Have included some very slim POPs the remainder of the afternoon and evening per high res guidance as the warm front meanders and the weak disturbance aloft continues making its way across the region.
We'll have a lull of showers Tuesday as weak high pressure settles over the area. This could give us the chance to see some sunshine, but confidence is low on how much will break through the low clouds. High temperatures Tuesday will range from the lower 60s to upper 60s.
45 Upper level ridging over the eastern Gulf of Mexico and a strong long wave trough approaching southern CA will maintain a southwest upper flow over Texas. The upper high will strengthen slightly and 500 mb heights over the region will increase to between 584-586 dM.
The low clouds will slowly retreat to the east and northeast, later this afternoon and evening. Areas just to the east of the Laramie Range will see temperatures in the low to mid 50s, with some cities close to 60 degrees.
maintaining weak synoptic lift ahead of an approaching cold front. Given increasing amounts of sunshine, temperatures will return to near normal readings in the lower 50s.
A weak cold front will move through during the day, to actually bring slightly warmer temperatures from 35 to 40 north to the lower 40s south. For tonight, upper level ridging will occur from the Southern Plains into the Central Plains upstream of a closed low off the coast of California and southwest flow across the Desert Southwest. With a lack of ice crystals aloft, and with temperatures and wetbulb temperatures sufficiently near or above 32 degrees, rain or light freezing rain is expected. Lows from 20 to27 north central to the lower 30s southwest. On Tuesday, chances for light rain/freezing rain in the morning southwest and rain or snow across the east.
Ahead of the approaching cold front, a weak 5H impulse will join forces with the warm, moist air lifting isentropically north of the aforementioned boundary to our south, resulting in light rain/drizzle for most of the evening. Expect to see more rain than drizzle kick up just ahead and along the cold front, which is progged to pass through the area Tuesday morning. High pressure will continue its retreat toward New England Tuesday night, with cloudy and mild coditions in the light SE flow over the Ohio Valley.
230 PM CDT Mon Mar 16 2020 A cold front was working its way southeast through MN into the area this afternoon. Mostly sunny and dry conditions for Tuesday as high pressure builds in from the Northern Plains.
337 PM CDT Mon Mar 16 2020 An upper trough was present off the western coast of California with southwest flow aloft across most of the CONUS. Cloudy skies and drizzle have persisted through the day with temperatures only reaching the low 40s.
The next upper low to affect the region is spinning just off the northern CA coast. Winds will become light and variable tonight as high pressure sinks into the region, and skies will start to clear from north to south. Warmer air will advect into the region Tues/Wed, ahead of the upper trough.
An upper low lifting northeast into Idaho will advect moisture and energy into the western and central zones by Tuesday evening, with cold air advecting into the region from the north.
245 PM CDT Mon Mar 16 2020 VIS sat imagery and sfc observations show that the fog/stratus that has plagued the lower elevations the past few days is slow to burn off this afternoon. No clouds were noted over the highlands, and mesoanalysis shows sbcapes in excess of 3000 J/kg over the srn Big Bend. This will ramp up SW flow aloft over West Texas and Southeast New Mexico, bringing westerly flow onto the higher terrain.
An upper trough axis progresses eastward through the region this evening and may bring some drizzle or light rain across parts of northwest IA and southwest MN as well, along with cooler air and weakening winds tonight. As warm air advection and ridging aloft develop, expect temperatures to be slightly warmer on Tuesday than Monday.
This is all in response to a broad upper level low situated off the coast of California which is projected to slowly drift south over the next 24 hours before progressing inland.
Low clouds and ridge/mountain fog continue this morning. Low temperatures tonight and Tuesday night should range in the low/mid 50s.
255 PM CDT Mon Mar 16 2020 Warmer temperatures on Tuesday with breezy southerly winds highlight the short term forecast. This afternoon, a broad closed low was centered just off the coast of northern California while another large low pressure center was located over the Hudson Bay. A consensus of MOS guidance puts the high temperatures in the southwest into the mid-upper 40s.
Farther S, a slow improvement to MVFR to possibly VFR cigs are expected across Lower E TX/Srn sections of Ncntrl LA, as a warm front begins to mix N into Deep E TX/Cntrl LA. Believe that the MVFR/IFR cigs will linger generally along/N of the I-20 corridor this evening, before additional MVFR/IFR cigs develop late as the warm front becomes stationary over the Srn sections of the region. The progs are awfully aggressive in eroding the low cigs too quick especially given the proximity of the warm front that will lift N into the Srn zones this afternoon, suggesting the warmer temps that were previously advertised. This front should eventually become stationary again this evening with the loss of mixing, and may even be nudged a bit Swd overnight in response to weak sfc ridging over the area.
Temperatures are running 6 to 9 degrees warmer from this time yesterday so look for afternoon temperatures to return into the 40s.
342 PM CDT Mon Mar 16 2020 Warmer than average weather is expected for much of the week in spite of mostly cloudy to overcast conditions and chances for light showers.
A flat mid level ridge across south FL and continued onshore flow will allow for warm day with deeper moisture beginning to lift toward the northern peninsula through the day. Highs will be warm and range from the lower 80s coast to mid 80s interior.
Low cigs expected to return late tonight, with MVFR/IFR expected with the highest confidence in low cigs and some low vsby at VLD. A 'cooler' northeast to east surface wind will reside north of this boundary with highs today in the mid to upper 70s; south and west of this feature, highs are expected in the mid to perhaps upper 80s. Lows tonight will bottom out in the lower 60s.
1106 AM CDT Mon Mar 16 2020 Regional 88Ds show light returns moving ewd across ern/srn TX which have mostly been virga so far this morning with few sfc obs showing any rainfall (showers have been reported primarily in the higher returns, mainly across nern TX so far). /issued 535 AM CDT Mon Mar 16 2020/ 12Z Tafs Only ceiling restrictions now are at AEX with 300 ft overcast behind the cold front. Surface analysis suggests cold front near the coast early this morning and will be advancing into the near coastal waters and stalling.
Temperatures should remain above freezing tonight then recover well into the 40s Tuesday as clouds decrease ahead of an approaching high pressure area.
A large upper low is off the California coast this afternoon, and is not expected to make much forward progress through tomorrow. Overcast skies and a weak cold front approaching from the north brings plenty of uncertainty with the forecast tomorrow. Given the surface stability owing to the potential weak cold front, do not anticipate that wind will be a major threat with any thunderstorms that form tomorrow afternoon and evening.
Afternoon temperatures will continue to moderate throughout the week, as well as overnight lows coming up above freezing by mid-week.
Warmer temperatures on Tuesday with breezy southerly winds highlight the short term forecast. This afternoon, a broad closed low was centered just off the coast of northern California while another large low pressure center was located over the Hudson Bay. A consensus of MOS guidance puts the high temperatures in the southwest into the mid-upper 40s.
815 PM EDT Mon Mar 16 2020 High pressure over northern New England will maintain a damp and cool northeast flow until early Tuesday before the first in a series of upper-level disturbances tracks into the Ohio and Tennessee valleys, keeping the weather unsettled through much of the week ahead. Just as the wedge weakens tomorrow, cloudiness from an approaching weak short- wave over the Tennessee Valley will bring more low clouds and increased chances for rain with the highest pops across our southwest counties.
Still looking at a light QPF event overall as forcing and moisture do not align favorably for heavier rain, and as the cold front will lag to the west as well. Temperatures were also modified slightly, mainly in the ridges which are running a few degrees colder. The sfc cold front will cross the region through the day Tuesday, but intrusion of drier air from the west and loss of upper support aloft will keep light rain chances low and spotty. Weak cold advection will ensue as high pressure builds after FROPA, with resulting in seasonable temperature.
Low pressure moving along the California coastline will continue to push moisture across much of the forecast area.
1032 PM EDT Mon Mar 16 2020 Currently - High pressure over the Southeastern United States is responsible for gentle to moderate east northeast breezes across the Florida Keys. The only meteorological radar echoes are located over the certainly warmer and more humid air mass over the Florida Straits. Short Term Update - Ridging will continue to dominate Keys weather through the overnight period. A ridge to our north will maintain moderate mostly easterly breezes.
/issued 245 PM CDT Mon Mar 16 2020/ VIS sat imagery and sfc observations show that the fog/stratus that has plagued the lower elevations the past few days is slow to burn off this afternoon. No clouds were noted over the highlands, and mesoanalysis shows sbcapes in excess of 3000 J/kg over the srn Big Bend. This will ramp up SW flow aloft over West Texas and Southeast New Mexico, bringing westerly flow onto the higher terrain.
The upper level low will be pushing south and east overnight and this will focus vorticity advection and precip in our northern areas. The closed low will be transitioning into an open wave on Tuesday and this will keep showers in the forecast with the best chances north of I-80 and over the northern Sacramento Valley.
With this in mind, main precipitation type tonight may be drizzle/freezing drizzle vs light rain/light snow. The temperatures forecast for Tuesday will be dependent on the rate at which this all takes place, but warmest readings will likely be in and around Denver then cooler north and east, just not sure by how much.
/10/ Tuesday night through the weekend: Upper ridging remains in place across the Gulf of Mexico, extending into much of the Deep South.
540 PM CDT Mon Mar 16 2020 A cold front was working its way southeast through MN into the area this afternoon. Mostly sunny and dry conditions for Tuesday as high pressure builds in from the Northern Plains.
/ISSUED 342 PM CDT Mon Mar 16 2020/ Warmer than average weather is expected for much of the week in spite of mostly cloudy to overcast conditions and chances for light showers.
The higher rainfall amounts were recorded across the sierra nevada where some rain gages showed near three quarters of an inch of rain in the past six hours. Satellite images show some cooler and unstable air moving across the coastal mountains. The higher resolution models indicate heavy precipitation through 06z this evening then diminishing overnight. The trough will shift towards point conception Tuesday as another disturbance moves through the west side of the system. A secondary atmospheric disturbance will develop in the northeastern quadrant of the low pressure system.
855 PM MDT Mon Mar 16 2020 Expect drier conditions throughout the region with light winds and highs ranging in the 20s in north central Montana and the low 40s in parts of the southwest through Tuesday morning.
Still looking at a light QPF event overall as forcing and moisture do not align favorably for heavier rain, with both largely outrunning the cold front. and as the cold front will lag to the west as well. Temperatures will only slowly drop through the night, and may actually rise a bit along the ridges thanks to southwest just off the surface. The sfc cold front will cross the region through the day Tuesday, but intrusion of drier air from the west and loss of upper support aloft will keep light rain chances low and spotty. Weak cold advection will ensue as high pressure builds after FROPA, with resulting in seasonable temperature.
The upper low is continuing to drift southward with moisture wrapping around into the cold pool to the north.
635 PM CDT Mon Mar 16 2020 The low stratus cloud deck cover may thin some tonight across portions of north central Nebraska as somewhat drier air filters into the area behind the cold front. The clouds and moist air will continue to keep temperatures below normal with highs most areas in the lower 40s.
Temperatures should remain fairly stable with lows in the 40s over the northern half of the area and in the low 50s for the southern half.
High pressure over the mid-Atlantic states will keep the local winds generally onshore tonight through Tue. A dry and warm forecast is in place for Tue with temps rising to the mid 80s across the interior but only to the lower 80s across the coastal areas.
811 PM MDT Mon Mar 16 2020 Update: Skies have cleared this evening with high pressure over the area.
Expect drier conditions throughout the region with light winds and highs ranging in the 20s in north central Montana and the low 40s in parts of the southwest through Tuesday morning.
800 PM EDT Mon Mar 16 2020 A weak backdoor cold front pushing southwest into northern Florida has allowed for a few light showers to develop over the Nature Coast this afternoon, but these should gradually dissipate and move offshore through the rest of the evening. High pressure ridging north of the waters will gradually slide south across the central waters during the second half of the week.
At 18z, GOES WV imagery revealed a deep upper-level closed low spinning over the west coast. Meanwhile, in the low-levels, a moisture- laden air mass remains in place as moisture from both the Pacific and the Gulf continue to advect into the region. As a diffuse cold front passes through overnight and winds turn light and northerly in its wake, areas of fog and patchy drizzle will develop along the Ozark Plateau with the help of some orographic lift. By the afternoon, surface winds will have veered to the south as the center of high pressure moves into the Great Lakes region and a pre-frontal trough lifts into the Plains.
A low pressure system will move through the state tonight into Tuesday bringing a mix of rain and snow showers to central and northern Nevada. Accumulating snow across the higher terrain of central Nevada could cause some travel issues tonight into Tuesday morning.
An upper trough was present off the western coast of California with southwest flow aloft across most of the CONUS. Cloudy skies and drizzle have persisted through the day with temperatures only reaching the low 40s.
The low pressure system along the northern California coast will maintain a mild southerly flow across Utah through Tuesday. This low pressure will slowly drift east into the Great Basin and bring the potential for widespread precipitation over Utah midweek.
Scattered areas of rain continue to diminish this afternoon as a weak upper trough peels off to the east.
An increase in clouds can also be expected with lows in the lower 60s.
The trough axis stretches from northeast to southwest across the CWA, with quite a bit of showers and thunderstorms developing near the boundary. The cold front pushing south will also move convection off into SD and MN later tonight, Some light showers further north along the mid level baroclinic zone in our northwestern counties, but not too much reaching the ground. Cool high pressure moving in behind the front will bring below average temps in the 60s and lows in the 40s with a couple of upper 30s possible in our usual cold spots. Continuing to see a northwest flow aloft regime with a sharp positive tilt trof aloft over Minnesota.
These clouds will be a little thicker tonight and help keep temperatures a little warmer than guidance wold suggest. The current forecast allowed for warmer morning lows so no changes were needed with this update.
800 PM EDT Tue Jun 11 2019 High pressure builds into the area tonight with areas of fog likely, along with cool temperatures.
High pressure south of the state and a boundary to the north will keep southwest winds in place across the waters with winds generally expected to remain below headlines.
Coverage is expected to become more widespread through the afternoon and evening before pushing out overnight as the low shifts southeast. Aiding the potential for severe hail is that the freezing heights are very low and between about 7. The ridge over the western CONUS progresses eastward as we move closer to the weekend.
954 PM EDT Tue Jun 11 2019 High pressure will slide to the east and pass overhead tonight.
Low temps will be near to slightly above normal in the lower to mid 70s.
956 PM CDT Tue Jun 11 2019 Upper trof axis is currently stretched from ne Tx into the Valley. Locally, impulses embedded closer to the base of the trof are contributing to some light ese-moving precip across the area.
temperatures are currently about 2-4 degrees cooler than they were at this time last night with dew points in the low to middle 50s. High pressure was located over western Ohio this afternoon. High pressure will continue to control the weather across most of the eastern half of the U. On Wednesday, a cold front will drop southeast into Missouri during the morning hours and then into the Mid-South by early evening. Temperatures will be a little warmer on Wednesday with highs mainly in the low to mid 80s. The cold front will move through the Mid-South Wednesday night with a few showers and thunderstorms possible during the evening hours over eastern sections of the region.
A deep trough, evident in water vapor imagery, will draw moisture out of the eastern Gulf and coastal Atlantic waters tonight and bring a chance for early morning showers into our eastern zones.
Convection will be strongest initially in this higher instability area but will likely loose intensity as it heads into less favorable environments.
Satellite imagery also shows a general decrease in cloud cover as well associated with drier air advecting in from MT with high pressure currently located in northcentral WY. Strengthening upper trough is crossing the region at this time, with the main upper wave now crossing the CWA. Precipitation will decrease through mid evening as diurnal cooling sets in and large scale ridging builds in from the west.