Aikyam-Lab/Synoptic-Bench huggingface dataset:
915 AM EST Thu Jan 9 2020 Strong high pressure over the mid-Atlantic region continues to ridge over the southeast U. Latest temperature obs are showing a spike in temperatures around 8 degrees warmer than 24 hours ago. High pressure moving by to the north will dominate the eastern Gulf of Mexico into the weekend with periodic increases in speeds to exercise caution or advisory levels.
Heaviest snow can be expected in the highest elevations, but most elevations with population centers will see 6 to 10 inches of snow in the highland area.
A massive, north-south oriented, deep tropospheric anticyclone reaching from Eastern Canada southward down the eastern seaboard and into the extreme Northwest Caribbean Sea, will slide into the western North Atlantic Ocean tonight and Friday. With the progressive high pressure system, winds will veer to east and southeast which will allow upglide below 700 mb. Beyond that, the aforementioned ridge will settle southward and extend across the Sunshine State into this weekend.
615 AM EST Thu Jan 9 2020 High pressure will bring dry and tranquil conditions through tonight. A warm up starts on Friday, followed by several bouts of rain for the weekend as waves of low pressure ride northeast along a nearly stationary frontal boundary just to our west. Moisture gradually increases too with anomalous PW surging into the Ohio Valley late tonight and Friday as low pressure approaches from the Plains. A few pockets in the northern valleys may be cold enough Friday morning when the rain begins for a brief period of wintry mix, but temperatures should quickly rise above freezing. Highs Friday will range from the lower 40s north to around 50 south.
First low pressure of our weekend series was over south central NE which is sending strong southerly flow into MI/IA and western IL, which will be moving into our area by tonight.
304 AM CST Thu Jan 9 2020 A vortmax, out ahead of a developing trough over California, can be seen passing across the Four Corners region on WV imagery as of 8Z.
333 AM CST Thu Jan 9 2020 (Today and Tonight) An upper trough (currently entering the West Coast) will deepen as it drops southeast across the Great Basin today, and across Arizona and into New Mexico by late tonight. With a continued increase in 850mb temperatures and the appearance of some sunshine this afternoon, highs are expected to be well-above normal for early January, and in the lower to mid 70s across our area.
345 AM CST Thu Jan 9 2020 An upper trough is over the western conus and Central Plains. The upper trough will strengthen and move over the region on Friday. High winds will be possible across the Guadalupe and Davis/Apache Mountains so the High Wind Watch remains in effect. Winds will become northerly Friday night with a cold front moving into the area.
A storm system will pass through the region tonight through Friday bringing a quick shot of showers and gusty winds followed by cooler daytime temperatures.
Rainfall amounts in the lower terrain and San Joaquin Valley should range from a few hundredths or a 10th of an inch down south to around 1/4 inch in northern portions of the area.
236 PM CST Thu Jan 9 2020 Temperatures this afternoon have risen into the mid 30s to 40s across areas mainly along and south of I-94, with cooler temperatures further north across central Wisconsin. Any lingering precipitation/drizzle should end by late this afternoon/early evening as a cold front moves through from west to east. Areas across north-central Wisconsin that still have surface temperatures near freezing could continue to experience some slick conditions on sidewalks and on untreated roads, bringing some travel impacts to the evening commute. High pressure builds southeast out of the Northern Plains into our area Friday night while surface cyclogenesis over the southern Plains sends moisture northward toward the area. Drier air associated with the high is expected to keep any precipitation suppressed just south of the area through the day with just a general increase/thickening in cloud cover.
247 PM CST Thu Jan 9 2020 An upper level trough over the western U. Strong westerly winds ahead of the trough will mix into the higher elevations of the Guadalupe and Davis Mountains where a High Wind Warning has been issued. A cold front will sit in the Texas Panhandle until the passage of the trough helps push it south into our area tomorrow night.
Rain and Another Cold Front. An approaching upper storm system, along with its associated cold front, will bring a significant departure from the dry and warm weather of the past several days. As another cold front approaches, from the north, surface winds will shift from the south to more from the west, by Friday afternoon. This will cause temperatures to drop near to around or just below freezing for areas north of I-20. However, ground temperatures will remain above freezing, so little to no accumulation is expected.
/issued 304 AM CST Thu Jan 9 2020/ A vortmax, out ahead of a developing trough over California, can be seen passing across the Four Corners region on WV imagery as of 8Z.
256 PM EST Thu Jan 9 2020 High pressure is moving to our east and a warm up will start on Friday. The temps will probably cool off nicely despite the high clouds, mainly due to the light wind in the east tonight and the snow on the ground.
211 PM EST Thu Jan 9 2020 An upper high east of the Bahamas and associated ridging extends northward along the eastern seaboard to close out the week and into the weekend. An upper low develops over the central U.
A good portion of the CWA is already seeing the low clouds, mainly west of the James River valley. As of now, the clouds are not having an impact on temperatures as Pierre and Mobridge are in the mid to upper 20s. Arctic high pressure will settle over the northern Plains on Friday bringing a significantly colder airmass with it.
1015 AM MST Thu Jan 9 2020 Pattern change ongoing as much colder air will begin to shift into the region the next several days per retrogression of the western NOAM long wave ridge.
159 PM MST Thu Jan 9 2020 20z surface analysis had cold front from southwest MT to KGCC to KVTN. Water vapour had upper trough over the northern Rockies heading toward the CWA with 80kt jet streak ahead of it across WY. Tonight into Friday morning, upper trough moves east as cold front sinks south.
246 PM CST Thu Jan 9 2020 Long wave trough is currently digging southward along the Pacific coast of California.
A back door cold front may bring more snow and gusty north winds to NE NM early Friday morning. A Pacific storm and associated cold front will approach from the east today and move over the state tonight through Friday, bringing windy and much colder conditions.
The first of which will bring breezy, cloudier and cooler conditions this afternoon area-wide with a few light mountain snow showers. Late afternoon is when the strongest upper support is expected to move overhead and it's possible that a few light showers will occur, but these are expected to remain over the higher terrain and any amounts will remain light. Winds are expected to remain generally light through much of the day, but north winds are expected to increase especially across Inyo, Esmeralda, and Nye counties behind a cold front that will move through during the afternoon.
1243 PM EST Thu Jan 9 2020 High pressure drifting northeastward over the region will bring an onshore flow into the forecast area.
The mid through upper ridge is aligned to our northeast. Short Term Update - The high to our north will migrate further eastward into the Atlantic today shifting winds a bit further east today, remaining breezy to windy. Strong high pressure over the eastern United States will maintain fresh to strong northeast to east breezes across Keys waters. Winds will tend stronger over the straits and weaker over the cooler gulf and bay side waters.
125 PM CST Thu Jan 9 2020 The highlight in the short term period is for very cold temperatures leading to a wind chill advisory tonight through Friday morning along and east of the Missouri River, excluding the far southern James River Valley. Increasing amounts of sunshine Friday, but very cold with highs mostly in the lower single digits either above zero or below zero along and east of the Missouri River, to around 15 above in the southwest.
218 PM EST Thu Jan 9 2020 High pressure off the East Coast will direct an onshore flow into the forecast area. Moisture in this flow combined with an approaching cold front will bring an increasing chance of showers.
149 PM EST Thu Jan 9 2020 High pressure off the East Coast will direct an onshore flow into the forecast area. Moisture in this flow combined with an approaching cold front will bring an increasing chance of showers.
Pockets of light snow continue as the trough progresses through the area.
Upper trough currently coming onshore will continue to dig over the Desert Southwest Thu night into Fri morning and will move out into the southern High Plains on Fri.
Strong high pressure will be northeast of the region through Tonight, continuing the mild onshore flow pattern. Temperatures will be well above normal Tonight, with lows ranging from the middle 50s inland, to the lower 60s near the coast.
Upper- level flow has transitioned to southwesterly as upper ridge develops just off the Southern FL Atlantic coast.
Upper Trough/Low will move from eastern Arizona 09z Friday into eastern New Mexico by 18z Friday. As the aforementioned low approaches, a weak front/pressure trough will develop east-west across the forecast area. The cloud depth will decrease rapidly with the passage of the upper trough and some dry slotting after midnight with precipitation decreasing thereafter.
Meanwhile the mid to upper level high is aligned off a bit to the east of our area. The increasing warm maritime trajectory will necessarily bring in steadily warmer and more humid. Expect highs to trend into the lower 80s and dew points into the lower 70s by the weekend. Meanwhile, increased lower level moisture riding around a ridge within a veering profile, along with the mid level ridge also sliding a bit further eastward will erode the lower level inversion. High pressure over the eastern United States will maintain fresh to strong east breezes across Keys waters over the next several days. Expect the highest winds over the Florida Straits, where occasional wind gusts near 35 knots will be possible. This high will gradually migrate out into the Atlantic then turn southeast.
RG Chattanooga Airport, TN 49 62 58 68 48 / 0 30 70 100 60 Knoxville McGhee Tyson Airport, TN 47 65 55 72 50 / 0 10 40 60 100 Oak Ridge, TN 47 63 55 71 49 / 0 20 40 100 90 Tri Cities Airport, TN 38 62 51 70 49 / 0 20 20 50 90 TN.
Have decided to just allow the High Wind Warnings run to the 5 AM expiration time as we are so close at Arlington.
Friday night will see mostly clear skies with high pressure dominating the Upper Midwest.
226 PM CST Thu Jan 9 2020 A cold front currently located in northern South Dakota is moving southward this afternoon. Zooming out to the bigger picture, a longwave trough over the Western CONUS will move eastward toward the Plains over the next 36 hours.
As the strong mid level trough moves out of the Desert Southwest into the Southern Plains, strong frontogenesis will occur along old stalled boundary over central TX.
656 PM EST Thu Jan 9 2020 Early evening water vapor satellite imagery is showing upper level ridging holding over Florida, keeping stable conditions in place and allowing temperatures to warm up under mostly sunny skies. Breezy east to southeast will continue into the weekend as high pressure holds to the north of the waters.
409 PM EST Thu Jan 9 2020 In the upper level we see a negatively tilted upper level trough axis across the Southern Plains.
A warm front which currently extends from northeast Texas into southern Louisiana will continue to move northeast tonight. As the warm front approaches the region, more showers are expected to develop ahead of the front and move through the Mid-South. By Friday morning, the warm front will have moved out of the region. A strong cold front will start to approach the region from the north and west. Temperatures will be a little warmer than today with highs in the mid to upper 60s.
418 PM EST Thu Jan 9 2020 High pressure is moving to our east and a warm up will start on Friday. The temps will probably cool off nicely despite the high clouds, mainly due to the light wind in the east tonight and the snow on the ground.
A storm system will pass through the region tonight through Friday bringing a quick shot of showers and mountain snow followed by cooler daytime temperatures. Snow levels drop to around 4,000ft, meaning some of the higher valley locations could see a dusting of snow up to an 1".
639 PM EST Thu Jan 9 2020 High pressure is moving to our east and a warm up will start on Friday. The temps will probably cool off nicely despite the high clouds, mainly due to the light wind in the east tonight and the snow on the ground.
Winds have turned to the northwest for much of the area behind a cold front moving through.
/issued 247 PM CST Thu Jan 9 2020/ An upper level trough over the western U. Strong westerly winds ahead of the trough will mix into the higher elevations of the Guadalupe and Davis Mountains where a High Wind Warning has been issued. A cold front will sit in the Texas Panhandle until the passage of the trough helps push it south into our area tomorrow night.
535 PM CST Thu Jan 9 2020 Long wave trough is currently digging southward along the Pacific coast of California.
The highlight in the short term period is for very cold temperatures leading to a wind chill advisory tonight through Friday morning along and east of the Missouri River, excluding the far southern James River Valley. Increasing amounts of sunshine Friday, but very cold with highs mostly in the lower single digits either above zero or below zero along and east of the Missouri River, to around 15 above in the southwest.
238 PM PST Thu Jan 9 2020 A low pressure system from the northwest will move across Southern California this afternoon into tonight bringing cool conditions, areas of strong gusty west to northwest winds, mainly in the mountains and deserts, and scattered showers. Drying and warmer conditions are expected on Friday.
A cold front is moving across the region this afternoon with breezy northwesterly winds behind the front, along with an expansive area of low clouds. Model spread for the Aberdeen area alone is 20 degrees, with the NamDNG on the high end, and MEX guidance on the low end.
Scattered showers and thunderstorms will persist overnight across southeast Oklahoma/northwest Arkansas in region of strong WWA ahead of potent upper low, currently diving southeast into the Baja region. Very active weather pattern expected for the next 24 to 36 hours as aforementioned upper low moves across the region.
552 PM CST Thu Jan 9 2020 Temperatures this afternoon have risen into the mid 30s to 40s across areas mainly along and south of I-94, with cooler temperatures further north across central Wisconsin. Any lingering precipitation/drizzle should end by late this afternoon/early evening as a cold front moves through from west to east. Areas across north-central Wisconsin that still have surface temperatures near freezing could continue to experience some slick conditions on sidewalks and on untreated roads, bringing some travel impacts to the evening commute. High pressure builds southeast out of the Northern Plains into our area Friday night while surface cyclogenesis over the southern Plains sends moisture northward toward the area. Drier air associated with the high is expected to keep any precipitation suppressed just south of the area through the day with just a general increase/thickening in cloud cover.
Afterwards, the low-level jet will weaken for most of Friday.
However, along the coast from the Cape southward it will still be breezy, up to 15 to 20 mph, as a strong ridge north of the region keeps an elevated onshore flow across the area. This stronger onshore breeze will lead to much milder temperatures tonight, with lows only forecast to fall into the low to mid 60s, except upper 60s along coastal locations south of the Cape. (Previous Discussion) Strong high pressure moving off of the Mid-Atlantic coast overnight will begin to veer winds from easterly to southeasterly.
414 PM MST Thu Jan 9 2020 20z surface analysis had cold front from southwest MT to KGCC to KVTN. Water vapour had upper trough over the northern Rockies heading toward the CWA with 80kt jet streak ahead of it across WY. Tonight into Friday morning, upper trough moves east as cold front sinks south.
309 PM CST Thu Jan 9 2020 A cold front is moving across the region this afternoon with breezy northwesterly winds behind the front, along with an expansive area of low clouds. Model spread for the Aberdeen area alone is 20 degrees, with the NamDNG on the high end, and MEX guidance on the low end.
626 PM EST Thu Jan 9 2020 High pressure off the East Coast will direct an onshore flow into the forecast area. Moisture in this flow combined with an approaching cold front will bring an increasing chance of showers by the weekend.
553 PM CST Thu Jan 9 2020 A cold front currently located in northern South Dakota is moving southward this afternoon. Zooming out to the bigger picture, a longwave trough over the Western CONUS will move eastward toward the Plains over the next 36 hours.
Cooler temperatures and breezy conditions will begin today and return periodically through the forecast period as an active weather pattern sets up and sends numerous dry weather systems through our area. Breezy north- northwesterly winds will set up area-wide as the cold front exits the region. Sustained wind speeds 10-15 mph with elevated amounts expected in the higher terrain.
1022 PM EST Thu Jan 9 2020 The dominant weather feature for the Florida Keys this evening is the large anticyclone centered east of the Delmarva. Strong easterly breezes prevail at the marine observation platforms due to the tight gradient along the southern periphery of the high pressure system. A recent ASCAT pass measured a broad expanse of 25 to 30 knots across the Straits of Florida, while the cooler waters north of the island chain average 17 to 25 knots. High pressure currently centered over the Delmarva will strengthen across the western North Atlantic tonight and Friday.
500mb upper trough moves through as advertised at 18Z that will force the surface front east into central Nebraska. 700mb winds begin to shift westerly as upper ridge moves in after 00Z. GFS 700mb winds begin to increase as ridge axis shifts to the east.
1152 PM CST Thu Jan 9 2020 Long wave trough is currently digging southward along the Pacific coast of California.
903 PM PST Thu Jan 9 2020 Drying and warmer conditions are expected on Friday.
Wind will shift to the north across eastern OK behind strong cold front after 00z. Scattered showers and thunderstorms will persist overnight across southeast Oklahoma/northwest Arkansas in region of strong WAA ahead of potent upper low, currently diving southeast into the Baja region. Very active weather pattern expected for the next 24 to 36 hours as aforementioned upper low moves across the region.
Isolated light snow showers in the north associated with an exiting trough will end by midnight. Dry conditions will prevail overnight through Friday morning as an upper ridge moves through the region.
1013 PM MST Thu Jan 9 2020 20z surface analysis had cold front from southwest MT to KGCC to KVTN. Water vapour had upper trough over the northern Rockies heading toward the CWA with 80kt jet streak ahead of it across WY. Tonight into Friday morning, upper trough moves east as cold front sinks south.
/issued 228 PM CST Thu Jan 9 2020/ (Tonight and Friday) An approaching upper storm system, along with its associated cold front, will bring a significant departure from the dry and warm weather of the past several days. As another cold front approaches, from the north, surface winds will shift from the south to more from the west, by Friday afternoon. This will cause temperatures to drop near to around or just below freezing for areas north of I-20. However, ground temperatures will remain above freezing, so little to no accumulation is expected.
1046 PM CST Thu Jan 9 2020 Temperatures this afternoon have risen into the mid 30s to 40s across areas mainly along and south of I-94, with cooler temperatures further north across central Wisconsin. Any lingering precipitation/drizzle should end by late this afternoon/early evening as a cold front moves through from west to east. Areas across north-central Wisconsin that still have surface temperatures near freezing could continue to experience some slick conditions on sidewalks and on untreated roads, bringing some travel impacts to the evening commute. High pressure builds southeast out of the Northern Plains into our area Friday night while surface cyclogenesis over the southern Plains sends moisture northward toward the area. Drier air associated with the high is expected to keep any precipitation suppressed just south of the area through the day with just a general increase/thickening in cloud cover.
Still have a concern whether the cap around 700mb erodes across the far southern part of the area, but should definitely weaken with the approach of the upper trof.
The period begins with a strong upper level ridge centered over the northwest Bahamas, and an upper trough digging across the Desert Southwest. At the surface, high pressure was centered east of the Mid Atlantic states, and this ridge will slide eastward today to north northeast of Bermuda. An area of low pressure just north of Lake Superior will move northeastward, dragging a cold front across the Midwest and Southern Plains.
1058 PM CST Thu Jan 9 2020 A cold front currently located in northern South Dakota is moving southward this afternoon. Zooming out to the bigger picture, a longwave trough over the Western CONUS will move eastward toward the Plains over the next 36 hours.
The upper level trough passing through Utah tonight will be replaced by high pressure aloft Friday.
MVFR ceilings remain mainly over the Victoria Crossroads late this evening but expect the lower ceilings will develop over the Coastal Bend between 07-08Z and spread inland to western Brush Country by 09-10Z. But expect stronger convection to hold off until frontal boundary and upper level trough approaches by late afternoon in the northern Brush Country.
113 AM EST Fri Jan 10 2020 High pressure off the East Coast will direct an onshore flow into the forecast area. Moisture in this flow combined with an approaching cold front will bring an increasing chance of showers by the weekend.
A strong cold front arrives Friday evening with low ceilings and some reduced visibility expected. Upper Trough/Low will move from eastern Arizona 09z Friday into eastern New Mexico by 18z Friday. As the aforementioned low approaches, a weak front/pressure trough will develop east-west across the forecast area. The cloud depth will decrease rapidly with the passage of the upper trough and some dry slotting after midnight with precipitation decreasing thereafter.
Still have a concern whether the cap around 700mb erodes across the far southern part of the area, but should definitely weaken with the approach of the upper trof. As for tomor- row, models have been trending with the idea that most of the POPs will be with the front/trof axis itself. One of the big issues may be the wind shear pattern setting up tomorrow afternoon/evening as the low-level jet strengthens further.