Aikyam-Lab/Synoptic-Bench huggingface dataset:
Anderson (Issued 349 PM CST Sat Feb 18 2023) Tonight through Sunday night: Low pressure over srn Saskatchewan will gradually deepen to 995 MB as it reaches James Bay, Canada by late Sun afternoon. Sct-bkn high clouds will continue to stream over srn WI, although stratus may form Sun ahead of the cold front, if enough low level moisture is present. Temps will not fall too much tnt, then warm into the lower to middle 40s on Sun.
648 PM EST Sat Feb 18 2023 High pressure will give way to a coastal trough tonight into Sunday.
There will be some increasing cirrus from the west, and this should help to keep low temperatures above freezing.
A storm system will bring much cooler temperatures for the second half of the week, along with snow in the mountains and foothills, and a chance of light precipitation for the San Joaquin Valley and desert areas. A Northeast Pacific upper ridge is leaning into the northwest coast while a weak trough extends across central California, connected to an upper low lingering off the coast of northern Baja/southern California.
Overnight lows should remain comfortably above the freezing mark, bottoming out in the mid to upper 30s. A few light echoes were noted on radar from underneath these clouds, but the high ceilings and dry air near the surface should prohibit any light sprinkles.
524 PM CST Sat Feb 18 2023 (Tonight through Sunday night) Cirrus clouds moving into region with southwest flow aloft will shift to the north on Sunday as the mid to upper level ridge over Mexico and the western Gulf of Mexico builds to the north. With the mid level ridge building north Sunday, the highs will be near or slightly above normal. Warm moist air moving across the cooler shelf waters should lead to patchy advection fog after midnight.
Early evening IR and water vapor satellite imagery are showing a dry airmass holding across the area in the wake of the recent cold front, with mainly clear skies across the area, although a deck of stratus is spreading west into southwest Florida. This ridge is forecast to keep quiet weather in place tonight and through the rest of the weekend, with temperatures already trending warmer tonight after the very brief cool down that stared yesterday afternoon. High pressure is continuing to settle in north of the waters, with northeast to east winds subsiding overnight.
(Tonight through Sunday night) Cirrus clouds moving into region with southwest flow aloft will shift to the north on Sunday as the mid to upper level ridge over Mexico and the western Gulf of Mexico builds to the north. With the mid level ridge building north Sunday, the highs will be near or slightly above normal. Warm moist air moving across the cooler shelf waters should lead to patchy advection fog after midnight.
624 PM EST Sat Feb 18 2023 Dry weather can be expected through Sunday as high pressure passes overhead.
350 PM CST Sat Feb 18 2023 (Issued 349 PM CST Sat Feb 18 2023) Tonight through Sunday night: Low pressure over srn Saskatchewan will gradually deepen to 995 MB as it reaches James Bay, Canada by late Sun afternoon. Sct-bkn high clouds will continue to stream over srn WI, although stratus may form Sun ahead of the cold front, if enough low level moisture is present. Temps will not fall too much tnt, then warm into the lower to middle 40s on Sun.
946 PM EST Sat Feb 18 2023 Southerly flow on the back side of retreating high pressure will provide dry weather with a warming trend this weekend.
1112 PM CST Sat Feb 18 2023 (Tonight through Sunday night) Cirrus clouds moving into region with southwest flow aloft will shift to the north on Sunday as the mid to upper level ridge over Mexico and the western Gulf of Mexico builds to the north. With the mid level ridge building north Sunday, the highs will be near or slightly above normal. Warm moist air moving across the cooler shelf waters should lead to patchy advection fog after midnight.
Winds off the higher terrain will help warm temperatures into the 60s and 70s despite mostly overcast skies. Jet level winds are expected to rapidly increase today over the lower Midwest with core winds in excess of 160 knots forecast over Kansas by this afternoon. The low levels will be very dry which will likely lead to evaporation of most precipitation leading to virga except where intensity is higher and rain can survive to the surface.
High pressure will continue across the CWA tonight. Thickening high clouds will help keep overnight mins several degrees warmer than last night. High pressure both aloft and at the surface will dominate the weather resulting in sunny conditions for the remainder of the afternoon. These cloud will help keep low temperatures warmer than last night, but still on the cooler side and in the upper 30s area wide. This will aid in temperatures topping out 5 to 10 degrees warmer than today.
159 AM MST Sun Feb 19 2023 A broad upper-level trough covers the CONUS, with its axis starting to move through the northern plains. At the surface, a cold front is draped west to east across ND, which will slowly push into NW SD this morning. As cooler air sinks into our CWA today, highs will decrease slightly (mid 30s to mid 40s) and lapse rates will increase.
1008 PM EST Sat Feb 18 2023 High pressure drifting off the Delmarva Coast tonight will create a southwest flow of milder air and fair weather for the remainder of this weekend. Min temps in the 25-30F range will be 5-10F above climo, except for some of the rural valleys over the Susq Region and points east that will see lows in the lower 20s as a result of thinner cloud cover. This could keep maxes on the low end of guidance range. Even those numbers will still be well above normal as the high moves offshore and the S wind increases. Mainly clear sky Sun evening will cloud up by Mon morning as WAA increases the moisture overhead in advance of a trough/weak front which will pass through mid-late day on Mon. Large broad ridge over off the U.
Scattered light snow showers in the mountains this evening will decrease in coverage early Sunday morning as the upper trough responsible exits the area.
111 AM EST Sun Feb 19 2023 High pressure drifting off the Delmarva Coast tonight will create a southwest flow of milder air and fair weather for the remainder of this weekend. Min temps in the 25-30F range will be 5-10F above climo, except for some of the rural valleys over the Susq Region and points east that will see lows in the lower 20s as a result of thinner cloud cover. This could keep maxes on the low end of guidance range. Even those numbers will still be well above normal as the high moves offshore and the S wind increases. Mainly clear sky Sun evening will cloud up by Mon morning as WAA increases the moisture overhead in advance of a trough/weak front which will pass through mid-late day on Mon. Large broad ridge over off the U.
1109 PM EST Sat Feb 18 2023 High pressure drifting off the Delmarva Coast tonight will create a southwest flow of milder air and fair weather for the remainder of this weekend. Min temps in the 25-30F range will be 5-10F above climo, except for some of the rural valleys over the Susq Region and points east that will see lows in the lower 20s as a result of thinner cloud cover. This could keep maxes on the low end of guidance range. Even those numbers will still be well above normal as the high moves offshore and the S wind increases. Mainly clear sky Sun evening will cloud up by Mon morning as WAA increases the moisture overhead in advance of a trough/weak front which will pass through mid-late day on Mon. Large broad ridge over off the U.
257 AM EST Sun Feb 19 2023 Traversing high pressure provides for dry weather and warmer temperatures today. Winds will remain calm overnight in the lowlands but could be light and from the SW as this disturbance pushes through. Winds will be light and variable in the higher elevations. Strong H592 Caribbean High Pressure still remains in control for today, so once this disturbance moves out this morning clouds will abruptly move out with it as our flow becomes zonal. Highs for the lowlands will be in the upper 50s to around 60, paired with DPs in the 30s.
(Today and tonight) An upper low continues to churn off the southern California coast leaving us in a realm of west/southwesterly upper level flow out ahead of it.
359 AM EST Sun Feb 19 2023 High pressure will move further offshore today. Several areas of low pressure will track to our north over the week, leading to above normal temperatures.
352 AM EST Sun Feb 19 2023 High pressure will move further offshore today. Several areas of low pressure will track to our north over the week, leading to above normal temperatures.
While some subtle variations due to the shifting ridge axis are likely, the overall result is very little change in our weather, except for increasing temperatures.
153 AM EST Sun Feb 19 2023 Traversing high pressure provides for dry weather and warmer temperatures today. Afternoon high temperatures will be in the low to mid 40s for the lowlands, with mid to upper 30s for the mountains, or approximately 5 degrees below normal for this time of year. Dry conditions continue overnight and Sunday as high pressure quickly shifts east of the region, and a weak upper level disturbance traverses north of the area. Low temperatures tonight will bottom out in the low to mid 30s for the lowlands, with mid to upper 20s for the mountains, amid increasing upper level clouds. Mid to upper 50s are progged for the lowlands, with mid 40s to low 50s for the mountains, as skies quickly clear throughout the late morning and early afternoon.
128 AM EST Sun Feb 19 2023 High pressure will give way to a coastal trough tonight into Sunday.
1257 AM EST Sun Feb 19 2023 Southerly flow on the back side of retreating high pressure will provide dry weather with a warming trend this weekend.
Then, a dry cold front is expected to pass during the afternoon.
A cold front nearing the North and South Dakota border will continue to push southward exiting the state. A cold front continues to move through southern half of the state. Low stratus behind the cold front could lead to a few flurries this morning. Decent pressures rises behind a cold front will be the driving force for gusty winds.
(Today and tonight) Strong high pressure located off the east coast is ushering in easterly surface winds with most of the surface moisture remaining off to the east. In the mid to upper levels, westerly zonal flow aloft ahead of a large upper trough progged to eject east from the southern Baja Peninsula will draw up moisture from the Pacific and transport it east, leading to spotty upper level clouds throughout most of the day. Temperatures are forecast to reach the low to mid 70s in our FL Panhandle and Big Bend counties with upper 60s forecast for our GA and AL counties. Overnight lows will range from the mid to upper 40s inland with our coastal FL Panhandle and Big Bend counties dropping into the low to mid 50s.
432 AM CST Sun Feb 19 2023 A cold front continues to move through southern half of the state. Low stratus behind the cold front could lead to a few flurries this morning. Decent pressures rises behind a cold front will be the driving force for gusty winds.
Aside from the increasing humidity, the short term forecast remains generally quiet as high pressure builds overhead. Temperatures today will be 10-15 degrees warmer than yesterday, with highs in the upper 70s to around 80. We'll gain another 5 degrees on Monday as highs are in the lower 80s for much of the area.
300 AM MST Sun Feb 19 2023 MORNING DISCUSSION: Synoptic Setup: Forecast begins with a the coldest air sitting over the north Hudson Bay and northwest flow ahead of a synoptic ridge running from northern British Columbia through southern Alberta to northeast Montana. The ridge itself crests over the Gulf of Alaska with a strong disturbance developing on the back side of it. Meanwhile, the disturbance over the Pacific will make its way around to the top of the ridge and rapidly collapse the flow southward. Meanwhile, The newly formed trough from the previous ridge crest will plunge through British Columbia into the Pacific Northwest pulling Arctic air down the Front Range. What remains of the ridge will rapidly exit Montana to the south.
Fair weather expected Monday with warmer temperatures.
513 AM CST Sun Feb 19 2023 (Today and tonight) An upper low continues to churn off the southern California coast leaving us in a realm of west/southwesterly upper level flow out ahead of it.
Temperatures will be a little cooler Monday with dry weather behind a cold front.
This will beef up winds this afternoon over the high country of western Colorado. Widespread wind gusts of 30-40 mph, with a few isolated stronger puffs, are expected over much of the higher terrain this afternoon.
This is in part due to a fast-moving low amplitude short wave trof that will traverse the region tonight. The short wave will push a cold front southward and into the southern CWA by 12z Monday. Like the previous system, the low levels are dry so that raises questions whether we will see any light measurable rain. The weak cold front that will be positioned across the southern CWA at daybreak, quickly loses its identity. Glass Another fast-moving low amplitude short wave trof will traverse the region on Monday night, pushing yet another cold front through the area.
(Today through Monday) High pressure builds into the Gulf of Mexico, southeast US and the Florida peninsula today as a weakened boundary remains stationary over the Florida Straits. Model guidance shows the boundary remaining stationary today before retrograding northward over South FL as a weak warm front on Monday, with isolated showers once again possible over portions of the interior. High temperatures today and Monday will reach the low to mid 80s across much of South Florida.
433 AM CST Sun Feb 19 2023 * A cold front crosses the area today bringing a chance for isolated snow showers to the Sandhills and northern Nebraska. A weak cold front does push into northern Nebraska during the afternoon.
504 AM EST Sun Feb 19 2023 Traversing high pressure provides for dry weather and warmer temperatures today. Winds will remain calm overnight in the lowlands but could be light and from the SW as this disturbance pushes through. Winds will be light and variable in the higher elevations. Strong H592 Caribbean High Pressure still remains in control for today, so once this disturbance moves out this morning clouds will abruptly move out with it as our flow becomes zonal. Highs for the lowlands will be in the upper 50s to around 60, paired with DPs in the 30s.
538 AM CST Sun Feb 19 2023 (Sunday through Monday) Mostly quiet weather is expected over the next 36 hours, as the region remains sandwiched between ridging over the Gulf, and a longwave trough over Baja California. As this low to our west begins to pivot south deeper into Mexico, the pressure gradient over the region will begin to tighten as well.
Otherwise, mostly dry with surface flow veering S/SW late this morning before becoming W/NW this afternoon as a ridge axis settles in over South Florida. Temperatures continue to warm, with afternoon highs in the low to mid 80s.
416 AM MST Sun Feb 19 2023 A broad upper-level trough covers the CONUS, with its axis starting to move through the northern plains. At the surface, a cold front is draped west to east across ND, which will slowly push into NW SD this morning. As cooler air sinks into our CWA today, highs will decrease slightly (mid 30s to mid 40s) and lapse rates will increase. Expecting amounts to reach 1 to 4 inches by Monday evening, with higher amounts possible over the highest elevations.
A couple storm systems will impact the region this coming week, with cooler air, gusty winds and periods of valley rain and mountain snow.
639 AM EST Sun Feb 19 2023 High pressure drifting off the Delmarva Coast will create a southwest flow of milder air and fair weather for the remainder of this weekend. These clouds could keep max temps on the low end of guidance range. Even those numbers will still be well above normal as high pressure moves offshore and the S wind increases. Mainly clear sky Sun evening will cloud up by Mon morning as WAA increases the moisture overhead in advance of a trough/weak front. A weak trough will move through on Monday, making scattered light rain showers for the Alleghenies, but little if any rain to the SE of State College.
Mid level ridging was maximized over the southern Gulf of Mexico with axis extending east over the Straits of Florida and through the central Bahamas, with a narrow mid level trough well to the east-northeast. A narrow ribbon of moisture extends west-southwest from the trough to over the Keys, with GOES16 precipitable water estimates near 1. This moisture axis is being carried westward in the lower tropospheric easterly flow with the leading edge of drier air moving westward near the Cay Sal Bank.
535 AM EST Sun Feb 19 2023 High pressure drifting off the Delmarva Coast will create a southwest flow of milder air and fair weather for the remainder of this weekend. These clouds could keep max temps on the low end of guidance range. Even those numbers will still be well above normal as high pressure moves offshore and the S wind increases. Mainly clear sky Sun evening will cloud up by Mon morning as WAA increases the moisture overhead in advance of a trough/weak front. A weak trough will move through on Monday, making scattered light rain showers for the Alleghenies, but little if any rain to the SE of State College.
Given increasing amounts of sunshine and southwesterly winds gusting 20-25mph, high temperatures will climb a few degrees warmer than yesterday into the middle 50s. A weak cold front currently dropping southeastward through the Dakotas will pass through central Illinois tonight.
653 AM CST Sun Feb 19 2023 * A cold front crosses the area today bringing a chance for isolated snow showers to the Sandhills and northern Nebraska. A weak cold front does push into northern Nebraska during the afternoon.
655 AM EST Sun Feb 19 2023 (Today and tonight) Strong high pressure located off the east coast is ushering in easterly surface winds with most of the surface moisture remaining off to the east. In the mid to upper levels, westerly zonal flow aloft ahead of a large upper trough progged to eject east from the southern Baja Peninsula will draw up moisture from the Pacific and transport it east, leading to spotty upper level clouds throughout most of the day. Temperatures are forecast to reach the low to mid 70s in our FL Panhandle and Big Bend counties with upper 60s forecast for our GA and AL counties. Overnight lows will range from the mid to upper 40s inland with our coastal FL Panhandle and Big Bend counties dropping into the low to mid 50s.
608 AM EST Sun Feb 19 2023 (Today through Monday) High pressure builds into the Gulf of Mexico, southeast US and the Florida peninsula today as a weakened boundary remains stationary over the Florida Straits. Model guidance shows the boundary remaining stationary today before retrograding northward over South FL as a weak warm front on Monday, with isolated showers once again possible over portions of the interior. High temperatures today and Monday will reach the low to mid 80s across much of South Florida.
Temperatures trend a little warmer through Monday, with most of the region remaining dry.
For tomorrow, we are looking at a much warmer day as a building ridge to our south reinforces zonal flow aloft while keeping conditions rain-free.
Aforementioned high pressure will continue to slide east with a broad ridge axis draped just to our north. This combined with subsidence from the broad ridge will effectively shut us down for the remainder of the day in terms of precipitation. Expect above normal temperatures once again with daytime highs in the lower 80s and dew points holding near 70 degrees.
135 PM EST Sun Feb 19 2023 Fair weather expected Monday with warmer temperatures.
208 PM CST Sun Feb 19 2023 Winds have become breezy today as low pressure moves across Northern Ontario. A cold front stretches southwestward from this system to Kansas City.
1147 AM CST Sun Feb 19 2023 (Rest of Today) Seasonably strong zonal flow aloft will persist across northern AL/southern Middle TN today, as the region remains situated along the northern rim of a flat subtropical ridge centered across the southeastern Gulf of Mexico. Thus, we expect a warm and dry afternoon, with highs ranging from the m-u 50s in elevated terrain to the lower 60s in the valley.
/12 (Now through Monday) Nearly zonal aloft will remain through Monday north of a flattened upper high pressure area over the Gulf of Mexico, with high clouds continuing to spread from west to east over the area through tonight. On Lundi Gras, high high temperatures will climb into the low to mid 70s.
1040 AM EST Sun Feb 19 2023 High pressure will move further offshore today. Several areas of low pressure will track to our north over the week, leading to above normal temperatures.
134 PM EST Sun Feb 19 2023 Dry weather can be expected through tonight as high pressure keeps its influence on the area. Locally, high pressure overhead today will shift east tonight as a weak impulse moves through the Ohio Valley. Also a bit breezy this afternoon with southwest winds, so running on the warmer side of guidance, therefore bumped temperatures a few degrees warmer. The clouds will dissipate by this afternoon and the winds will decrease this evening as the trough moves east of the area. With westerly flow, not very confident rain will make it east of the mountains, so kept best chances along and west of the Blue Ridge.
Current forecast is on track noting reduced pcpn from previous forecasts but still heavy new snow in the mountains, especially north of the Snake Basin, with greatest amounts in the hours just after the strong cold front from the north, i.
/16/ (This evening through Monday Night) Dry and warmer than normal conditions are expected through the next 36 hours across the Four State Region ahead of the next chance of rain.
140 PM EST Sun Feb 19 2023 Dry weather can be expected through tonight as high pressure keeps its influence on the area. Locally, high pressure overhead today will shift east tonight as a weak impulse moves through the Ohio Valley. Also a bit breezy this afternoon with southwest winds, so running on the warmer side of guidance, therefore bumped temperatures a few degrees warmer. The clouds will dissipate by this afternoon and the winds will decrease this evening as the trough moves east of the area. With westerly flow, not very confident rain will make it east of the mountains, so kept best chances along and west of the Blue Ridge.
Tonight and Monday A weak cold front crossed into central and north-central Wisconsin through the morning hours and into the early afternoon, bringing with it a region of lower clouds. Temperatures for the afternoon varied fairly greatly from the lower 30s behind the cold front and under the clouds to the middle to upper 40s in the sunny areas of the Fox Valley and lakeshore. As we get into the evening, the cold front will cross the rest of the region, bringing back cooler air. As such, the combination of clearing skies and CAA behind the weak cold front will bring a much colder night into the region tonight. Stuck to some of the lower guidance, especially for the typical cold spots across the north.
136 PM EST Sun Feb 19 2023 A dry night will be followed by rain showers accompanying a weak Monday cold front.
(Rest of Today) Seasonably strong zonal flow aloft will persist across northern AL/southern Middle TN today, as the region remains situated along the northern rim of a flat subtropical ridge centered across the southeastern Gulf of Mexico. Thus, we expect a warm and dry afternoon, with highs ranging from the m-u 50s in elevated terrain to the lower 60s in the valley.
Surface and upper ridging prevail across the area today and this will continue through tonight. Highs on Monday will climb into the low to mid 70s for most of the area.
1144 AM CST Sun Feb 19 2023 * A cold front crosses the area today bringing a chance for isolated snow showers to the Sandhills and northern Nebraska. A weak cold front does push into northern Nebraska during the afternoon.