Aikyam-Lab/Synoptic-Bench huggingface dataset:
ON THE SYNOPTIC SCALE A MID-LEVEL RIDGE AXIS IS GRADUALLY MOVING ACROSS THE UPPER MIDWEST THIS AFTERNOON AHEAD OF AN UPPER LOW CURRENTLY CENTERED OVER COLORADO. ABOVE AVERAGE MOISTURE EXPECTED TO ADVECT NORTHWARD AHEAD OF THIS LOW WHICH WILL RESULT IN PRECIPITABLE WATER VALUES 2 TO 3 STANDARD DEVIATIONS ABOVE NORMAL. THE UPPER LOW WHICH TRANSITIONS INTO A SHARP TROUGH AXIS LOOKS AMPLE TO PRODUCE THE DYNAMICS NECESSARY FOR WIDESPREAD RAINFALL. TEMPERATURES WILL DIP TO NEAR-FREEZING ACROSS THE TIP OF THE ARROWHEAD BUT OTHERWISE IN THE UPPER 30S TO LOW 40S. AREAS OF FOG OVER THE NORTH SHORE OF LAKE SUPERIOR AND PARTS OF NORTHWEST WISCONSIN IN WAKE OF THE LOW AND RAINFALL.
/ISSUED 337 PM EDT THU OCT 22 2015/ NO CHANGES IN THE SHORT TERM FORECAST AS HIGH PRESSURE WILL CONTINUE TO DOMINATE THE WEATHER PATTERN ACROSS THE REGION.
919 PM MDT THU OCT 22 2015 THE CENTER OF THE LOW PRESSURE SYSTEM WHICH CONTINUED TO BRING PRECIPITATION TO THE FORECAST AREA THIS EVENING HAD SHIFTED TO THE SOUTHEAST CORNER OF WYOMING AS OF 03Z. SNOW LEVELS HAVE RISEN IN RESPONSE TO WAA IN THE WAKE OF THE COLD POOL BENEATH THE LOW CENTER. THE CLOSED LOW HAS FINALLY SHIFTED TO THE NORTHEAST WHILE RAIN AND SNOW CONTINUES FOR MUCH OF THE FORECAST AREA. HAVE SOME CONCERN ABOUT SAN JUANS AS THE LOW LIFTS TO THE NORTHEAST BUT AGAIN. A RESIDUAL TROUGH REMAINS OVER THE REGION ON FRIDAY WHICH WILL KEEP INSTABILITY IN PLACE FOR RECYCLING OF MOISTURE FRIDAY AFTERNOON.
ONSHORE FLOW PATTERN STUCK IN PLACE WITH HIGH PRESSURE RIDGE TO THE NORTH AND EAST-NORTHEAST STEERING FLOW OFF THE ATLANTIC WILL CONTINUE THE THREAT OF ISOLATED SHOWERS OVER THE ATLC WATERS AND INTO THE I-95 CORRIDOR THROUGH THE NIGHT. MAX TEMPS WILL PUSH INTO THE LOWER/MIDDLE 80S INLAND AND UPPER 70S COAST. THE LOWEST CIGS/VSBYS WILL BE AT THE INLAND LOCATIONS OF GNV/VQQ WHERE LIFR CONDS CAN BE EXPECTED BY 09Z.
LOW CLOUDS AND FOG SHOULD LIFT AHEAD OF A COLD FRONT WHICH SHOULD MOVE THROUGH DHT AND GUY AROUND MID DAY AND THROUGH AMA BY LATE IN THE AFTERNOON. SKIES SHOULD REMAIN VFR BEHIND THE COLD FRONT. UPPER LEVEL LOW STARTING TO LIFT NORTH ACROSS COLORADO. WINDS WILL CONTINUE TO VEER FROM SOUTHWEST TO WESTERLY EARLY FRIDAY MORNING AHEAD OF A COLD FRONT APPROACHING FROM THE NORTH. THIS FRONT WILL GRADUALLY WORK SOUTH ACROSS THE PANHANDLES ON FRIDAY AS THE UPPER LOW CURRENTLY OVER CO CONTINUES TO OPEN UP AND MOVE NORTHEAST INTO THE NORTHERN PLAINS.
1024 PM CDT THU OCT 22 2015 LOW PRESSURE SYSTEM OVER EASTERN COLORADO THIS AFTERNOON WILL BEGIN LIFTING OFF TO THE EAST-NORTHEAST OVERNIGHT THROUGH FRIDAY.
Quiet afternoon across the region with sunny skies and temperatures in the lower to mid 50s. Under continued WAA, high temperatures for Tuesday will be even warmer than today, topping out in the lower to mid 60s.
Winds at the surface tonight will be rather light within the passing weak low pressure system. In the wake of tonight's weak wave, expect some cooling to sag southward on Tuesday, resulting in slightly cooler temperatures from roughly Huron to Pipestone to Jackson and points north and east.
312 PM MST Mon Feb 28 2022 Upper ridging over CO will keep dry and warm conditions across the region. Clear skies tonight will allow for cooler temperatures given efficient radiational cooling for some of the interior valley locations, while lee troughing and light westerly winds keep temperatures warmer for the downsloping areas along and west of I- 25. Tomorrow will be dry and warmer across southern CO with temperatures starting top top out around 70 across the lower Arkansas river valley region. Winds look light under the ridge which should mitigate the potential critical fire weather conditions as gusts are not likely to get over 20 mph.
306 PM CST Mon Feb 28 2022 KEY MESSAGES: - Chance of freezing precipitation late tonight/early Tuesday, with more uncertainty of freezing precipitation late Tuesday night.
High pressure overhead today will slip southward and lead to increasing southwesterly flow at the surface the next two days.
High pressure continues to promote clear and dry conditions across the Tennessee Valley. Still, it should be a few degrees warmer than last night and they will eventually bottom out in the low to mid 30s.
633 PM EST Mon Feb 28 2022 A warmer south to southwest flow can be expected across the region tonight into Tuesday.
A weak trof over the Great Lakes region moves a few clouds across overnight, otherwise dry conditions persist through Tuesday morning. Southwesterly flow just off the surface tonight moderate low temperatures closer to normals with readings in the low 30s, except in the 20s along mountains.
There continues to be a small chance of freezing rain late tonight into Tuesday for mainly Sheridan County.
Light northerly surface winds will also continue as high pressure builds across much of the Deep South.
Fantastic weather conditions are anticipated throughout the work week as a broad ridge builds over the Intermountain West early this week and gradually shifts eastward with time.
622 PM EST Mon Feb 28 2022 High pressure builds over the region through tonight and then offshore on Tuesday.
456 PM EST Mon Feb 28 2022 High pressure will maintain dry conditions before rain and snow chances return with a mid week front. As well, assisted lift along the colder ridgetops in the southeast could also stand to see a few snow showers.
A weak sfc trof of low pressure will move through the region tonight. This would seem to support warmer lows in the upper 20s to mid 30s as suggested by the short term model blend.
/issued 327 PM CST Mon Feb 28 2022/ Upper-level ridging will remain in place across the western CONUS and slowly migrate towards the forecast area tomorrow. With the warmer afternoon high temperatures today and the continued blanket of cloud cover, overnight temperatures will be a bit warmer than last night with values ending up right around average for this time of year. With light southwesterly winds continuing tomorrow and increasing thicknesses, temperatures will be about 5 degrees warmer than this afternoon with all locations peaking in the 70s.
Temperatures are cooling tonight in line with the previous forecast package and we look to drop to just above freezing for most locations. With temperatures likely to remain above freezing, no major impacts are expected with this. /86/ Prior discussion below: Overnight lows will remain cooler than seasonal normals, but a few degrees warmer than this morning, particularly in the Delta and northwest. The ridge axis in place over the region is keeping the weather quiet and the skies mostly clear. However, that ridge and the associated light winds allow those temps to drop into the upper 30s after 06Z.
Today and Tonight: High pressure prevails at the surface and aloft as the storm track remains focused to our north.
Will see even warmer temperatures on Tue with readings in the mid 60s to around 70 degrees over nern CO. A ridge of high pressure will remain remain over the Rocky Mountain region through the middle of the week.
549 PM CST Mon Feb 28 2022 Updated for 00Z aviation discussion KEY MESSAGES: - Chance of freezing precipitation late tonight/early Tuesday, with more uncertainty of freezing precipitation late Tuesday night.
Temperatures were already cooling off into the lower 40s. However, the typical radiative cooling spots had cooled down into the lower 30s. Quiet afternoon across the region with sunny skies and temperatures in the lower to mid 50s. Under continued WAA, high temperatures for Tuesday will be even warmer than today, topping out in the lower to mid 60s.
914 PM EST Mon Feb 28 2022 A warmer south to southwest flow can be expected across the region tonight into Tuesday.
421 PM MST Mon Feb 28 2022 Models initialize well with satellite imagery with ridging over the Pacific Northwest and a positive tilted trough extending from Colorado southwest to Southern California where a weak low is cutting off to form a Rex block. This blocking pattern will continue into mid week with the axis shifting slightly east over the Rocky Mountains. The ridging is currently bringing clear skies, quiet weather and warm afternoon temperatures about 10 degrees warmer than yesterday across eastern Utah and Western Colorado. Look for temperatures to warm another five degrees tomorrow with continued mostly clear skies and quiet weather with the ridge center shifting over head.
/28/ Overnight lows will remain cooler than seasonal normals, but a few degrees warmer than this morning, particularly in the Delta and northwest. The ridge axis in place over the region is keeping the weather quiet and the skies mostly clear. However, that ridge and the associated light winds allow those temps to drop into the upper 30s after 06Z.
256 AM EST Tue Mar 1 2022 Discussion/Marine - Clippers bring chance of light precip today and Wednesday The large scale pattern the next couple days features fast northwest flow between western CONUS ridging and an upper low over eastern Canada. A departing clipper trails a cold front through Lower Michigan today with light snow/rain possible across the southern zones this afternoon, in an area of low level convergence.
1158 PM EST Mon Feb 28 2022 Maintenance of a dry low level environment in the wake of a warm front ensures VFR continues overnight and Tuesday morning. A cold front will sag southward across the region Tuesday afternoon. The longwave pattern for most of the work week features an upper level ridge over western North America with a trough along the East Coast. The low levels will be stubbornly dry, with main forcing at the 700 MB level mainly over/just north of Saginaw Bay. If any precip is able to fall, expect it to be in the form of light snow as current temps hover around freezing. The "best" chance of precipitation over the next several days looks to to be Wednesday afternoon, as positive tilted polar trough axis swings into the northern Great Lakes.
110 AM EST Tue Mar 1 2022 High pressure along with drier air will build into the region through mid-week. With light and variable winds over the past several hours radiational cooling conditions have been optimal with temperatures falling into the low to mid 40s at most locations. Although the heights will be rising through the week, a weak trough remains across the eastern half of the country through late week. However, ridging will begin to build into the southeast over the weekend in response to a deep trough across the western U.
Upper ridging aloft is moving into the CWA. Will see even warmer temperatures on Tue with readings in the mid 60s to around 70 degrees over nern CO. A ridge of high pressure will remain remain over the Rocky Mountain region through the middle of the week.
freezing precipitation possible Tuesday night into Wednesday morning - Monitoring a larger mixed precipitation event this weekend, bringing rain/snow/thunder/wintry mix to most,if not all, of the area Upper level water vapor imagery shows a slight upper level disturbance sliding across Lake Superior today with associated precipitation remaining to our North. The moisture from this atmospheric river is expected to traverse the aforementioned southwest ridge for our next precipitation chance late tonight into early tomorrow morning. As for today, temperatures topping out in the 40s for most this afternoon with dewpoints in the high 20s will reduce snow cover amounts for many. Precipitation chances dot the forecast for the rest of the week from ripples within northwest flow along the periphery of the southwest ridge.
Through sunrise this morning, look for patchy fog in an area centered around Marianna FL and Bainbridge GA. Lows will commonly drop to the lower 40s, but a few inland cold pockets will reach the frosty 30s.
229 AM CST Tue Mar 1 2022 An upper level ridge covering the western CONUS will continue to move east today with a weak closed low underneath it traveling across southern Arizona today. Strong subtropical jet winds aloft today will decrease as this ridge moves east and the closed low further weakens.
High clouds continue to move over the region with overnight temps forecast to be in the low 30s for the majority of the area. Chattanooga Airport, TN 64 38 70 43 72 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 61 39 67 43 68 / 0 0 0 0 0 Oak Ridge, TN 62 37 68 42 69 / 0 0 0 0 0 Tri Cities Airport, TN 59 35 64 41 65 / 0 0 0 0 0.
Deep northwesterly flow aloft around a stout upper level ridge will persist through the forecast.
225 AM CST Tue Mar 1 2022 Surface pressure falls today as weak high pressure loses its influence across the area. We continued with the warmer high temps and lower dew points approach (though values should be up a bit).
Upper ridging was building over the Rockies. At the surface, high pressure extended from south Texas to northern Mississippi. Any significant cloud cover is well off the coast, or well to the west, where a cirrus shield was moving overtop the ridge into Texas/Oklahoma.
Winds at the surface tonight will be rather light within the passing weak low pressure system. In the wake of tonight's weak wave, expect some cooling to sag southward on Tuesday, resulting in slightly cooler temperatures from roughly Huron to Pipestone to Jackson and points north and east. This system will help to move cooler air into the area, but still quite warm for early March standards.
(Today and tonight) The very warm late winter trend continues today with general upper- level ridging to the west of Oklahoma.
/28/ Temperatures are cooling tonight in line with the previous forecast package and we look to drop to just above freezing for most locations. With temperatures likely to remain above freezing, no major impacts are expected with this. /86/ Prior discussion below: Overnight lows will remain cooler than seasonal normals, but a few degrees warmer than this morning, particularly in the Delta and northwest. The ridge axis in place over the region is keeping the weather quiet and the skies mostly clear. However, that ridge and the associated light winds allow those temps to drop into the upper 30s after 06Z.
1217 AM EST Tue Mar 1 2022 High pressure over the area overnight moves offshore on Tuesday.
18z and 21z guidance dp/dt from earlier runs shows warmer 850-mb temperature anomalies, and more a pattern that strongly signals temperatures on the higher end of guidance, above any blends that may have lingering cold bias. Lows overnight will continue to increase as warmer air encompasses the region. Persistent high pressure over the Gulf region will limit moisture return to the area. Breezy winds, with gusts up to 20 to 25 mph, will be possible again tomorrow as the low to the north and high to the south will tighten up pressure gradients over the area. guidance has been running cooler with this setup so again bumped up the max high but wouldn't be surprised if additional increases will again be needed as we get closer. Wednesday will be quiet and mild ahead of an approaching cold front.
Amplifying upper ridge over the interior western US has pushed the main Pacific moisture plume north of our CWA, although Baker County was still under it.
(Today) March will begin on a warm note with high temperatures forecast to be 15 to 20 degrees above normal as high pressure prevails at the surface.
and dry underneath upper level ridging. JKL The pattern will remain warmer on Wednesday before a deep trough moves into the area bringing the next chance of precipitation and drop temperatures back below normal.
Dry with above normal temperatures Discussion: We will remain under the upper level broad low amplitude Eastern US trough for the short term period.
A steady stream of upper level moisture and cirrus clouds are moving over the region in the flow aloft ahead of an upper level low over Southern California/North Baja. This low will cut off and weaken as it becomes trapped underneath a building upper ridge over the Western CONUS today and into Wednesday. As the upper ridge strengthens, this will transition the flow aloft to northwesterly and gradually bring in some drier air from the north.
Low pressure will transition east over the northern Great Lakes today with a trailing cold front progged to cross the region later this afternoon and through the evening, returning a chance of precipitation to the region. As well, assisted lift along the colder ridgetops in the southeast could also stand to see a few snow showers.
113 AM MST Tue Mar 1 2022 Ridging over the area today and Wednesday will keep mainly dry conditions and warm temperatures in place. The impetus for the strong wind gusts diminishes this afternoon as the jet lifts north with the ridging weakening lee side pressure falls. A stronger jet streak crosses north of the area Wednesday and the right rear quad of the jet will help to pull a backdoor front in from the northeast during the day into Wednesday night as it crests the ridge and dives southeast into the plains.
Light winds inland but breezy along the coast tonight in response to the pressure gradient tightening from a low pressure center developing off the southeast seaboard. (Previous Discussion) Low pressure east of FL continues to shift E/NE and farther away from the area into tomorrow. A Small Craft Advisory is in effect for the Volusia and Brevard waters until early Tuesday morning for north winds around 20 knots gusting to 25 knots, due to the development of a low pressure system off the southeast seaboard.
Upper level ridging over the western US. with an embedded low/short wave trough above the Desert Southwest. along with an upper trough from Quebec, Canada southward over the Atlantic will maintain northwesterly flow aloft the area through Wed. Temperatures run above normal although humidity on the low side will result in rather pleasant conditions. Thu through Mon: The western upper ridging works eastward. with the low/short wave trough dampening out. The ridge slips offshore Mon as a trough moves into the western half of the nation. This high pressure is reinforced by Canadian high pressure during the weekend then shifts out over the Atlantic. The upper ridge dominates with a stable.
High clouds continue to move over the region with overnight temps forecast to be in the low 30s for the majority of the area. Relative to yesterday, the region is warmer and drier with the addition of some high level clouds to help reduce radiational cooling some, however, there still remains some saturated soils across the area due to the recent wet pattern. Dry weather continues with high pressure in control. Slightly warmer temperatures on Tuesday. Discussion: Quiet short term period as high pressure at the surface brings dry weather and moderating temperatures. For tonight, high pressure will remain in control bringing another night of mostly clear skies and cold temperatures.
Slightly warmer air will advect in late tonight into Tuesday, with highs in the upper 50s to near 70.
VFR to prevail through Tuesday with high pressure ridging over the state. High pressure aloft and at the surface to provide VFR and light winds for all three air terminals for the next 24 hours. /issued 219 PM CST Mon Feb 28 2022/ SHORT TERM (Tonight through Tuesday Night): An H5 ridge expanding across Mexico will bring a west to northwest mid-level flow over Deep South Texas. At the surface, high pressure trudges east and will cause winds to become more easterly during the day Tuesday. Tuesday will feature a good amount of sunshine and temperatures in the lower to middle 70s, which is just below normal for the first day of March.
1015 PM MST Mon Feb 28 2022 Models initialize well with satellite imagery with ridging over the Pacific Northwest and a positive tilted trough extending from Colorado southwest to Southern California where a weak low is cutting off to form a Rex block. This blocking pattern will continue into mid week with the axis shifting slightly east over the Rocky Mountains. The ridging is currently bringing clear skies, quiet weather and warm afternoon temperatures about 10 degrees warmer than yesterday across eastern Utah and Western Colorado. Look for temperatures to warm another five degrees tomorrow with continued mostly clear skies and quiet weather with the ridge center shifting over head.
KEY MESSAGES: - Chance of freezing precipitation late tonight/early Tuesday, with more uncertainty of freezing precipitation late Tuesday night.
Surface analysis this evening places a 1025 mb ridge of high pressure over the Lower Mississippi Valley. Fantastic weather conditions are anticipated throughout the work week as a broad ridge builds over the Intermountain West early this week and gradually shifts eastward with time.
A progressive impulse pushing across the Great Lakes will drag a weakening cold front toward the Ohio Valley tonight, but with little or no impact on sensible weather other than an increasing breeze out of the SW.
220 AM EST Tue Mar 1 2022 Dry and warmer weather is on tap into Wednesday before a cold front brings a brief shot of colder weather and a small chance for some light rain or snow by Wednesday night. The clouds have helped temperatures remains fairly steady much of the night, but these same clouds (which continue well upstream into MN) could hamper full mixing of the warmer h85 temps that will be in place to start the day (but begin to lower across the north as the wave passes through. The warmer air will be nudged south briefly tonight with h85 temps back to 0 to +3 C, yielding lows in the 30s.
High pressure overhead today will slip southward and lead to increasing southwesterly flow at the surface the next two days. Another dry cold front moves through late Wednesday night. Given forecast soundings and how low dewpoints mixed down today, have sided toward the lower end of guidance for dewpoints and resultant RH values tomorrow.
1252 AM EST Tue Mar 1 2022 High pressure will slide farther offshore Tuesday, then remains centered off the coast through midweek.
High pressure remains over the area into tomorrow, so expect a similar outcome with FDS being issued once again with forecast RHs in the 20s. Lusk High pressure at the surface will be in place at the beginning of the forecast period.
1041 PM EST Mon Feb 28 2022 Currently - Lower through upper level troughing is swinging eastward across Florida tonight following along with a short wave trough aloft. The combination of the above is driving gentle northwest breezes across the Keys with temperatures falling through the lower 70s and dew points in the mid 60s. Despite troughing from around 850 mb and above, there is significant dry air aloft. This along with a comparatively low surface theta-e and building in ridging has resulted in no precipitation across the Keys this evening. The lower and mid level ridging will linger across Florida and into the Gulf of Mexico while the parent low will also shift further out into the Atlantic.
Trending cooler by the weekend with with increasing precipitation chances.
Low temperatures should remain above freezing, mostly in the upper 30s and low 40s.
250 AM CST Tue Mar 1 2022 A chilly start this morning with temperatures in the low to mid 30s. High pressure overhead provides ample sunshine and dry conditions allowing for temperatures this afternoon to rise into the mid to upper 60s.
918 PM CST Mon Feb 28 2022 High pressure out of the srn Plains continues to gradually build NE into much of the region this Mon evening translating into quiet and near seasonal wx conditions for the cntrl TN Valley. Current temps have fallen mainly into the upper 30s/lower 40s for many spots, and with a low level flow out of the NW, lows Tue morning look to fall predom into the lower 30s. We can expect beautiful weather to kick off the month of March on Tuesday and Wednesday as high pressure remains in control of our weather. We can expect an even warmer day on Wednesday, with readings in the lower 70s being common.
Warming trend continues into today with highs in the low to mid 70s expected this afternoon.