Aikyam-Lab/Synoptic-Bench huggingface dataset:
921 PM PDT Sun Apr 9 2023 High pressure building over the Southwest, will bring warmer days inland through Tuesday, while a shallow marine layer keeps coastal areas cool, along with areas of night an morning low clouds and fog. The ridge will be replaced by a weak trough for the latter half of the week. This will generate stronger onshore flow, deepening the marine layer, and forcing much cooler weather inland.
(Today) High pressure has continued to build in from the NE, allowing mostly clear skies.
435 AM EDT Mon Apr 10 2023 High pressure extending into the area will persist through most of the week. Mid level ridge builds into the area from the north today. This will allow temperatures to drop into the low to mid 30s by daybreak. Milder temperatures with lows tonight from the upper 30s east to the lower 40s west. Highs on Tuesday generally warm into the lower 70s.
Concurrently, upper troughing will develop/deepen over the S-Central states and enough lift may accompany this feature such that an isolated shower will be possible over the far NWrn portion of the area this afternoon.
1232 AM EDT Mon Apr 10 2023 High pressure is expected to bring dry weather through the work week. Temperatures will be a little warmer than last night as some warmer air makes its way in from the west, but low are still expected to be below freezing for most of the area. High pressure will remain in control through the period. Highs will climb into the 60s with plenty of sunshine and light winds with high pressure right overhead. Model soundings show very dry air in the lower atmosphere, allowing for dewpoints in the low 20s and RH values in the low 20s, but winds will remain below 10 mph, so not expecting fire weather concerns tomorrow. High pressure will remain in control as dry conditions continue through at least midweek.
Water vapor shows upper ridging from the southwest U. The shower/storm risk should end over our area during the early evening, as the upper low settles in over the lower Mississippi valley and instability is shut off with cooling surface temperatures. The rex blocking pattern sets up on Tuesday with the upper ridge folding over into the mid Mississippi valley and the closed low over the lower Mississippi valley south of the ridge.
1229 AM CDT Mon Apr 10 2023 Summary: Drier and warmer conditions will start the week with precipitation chances returning for the latter half of the week. High pressure was located across the eastern CONUS this afternoon with an area of low pressure along the South Dakota/Nebraska border. A line of showers was observed on radar stretching from western Lake Superior southwestward to the vicinity of the previously mentioned low pressure. Another trough will move through overnight, but models are indicating a mainly dry passage. Weak high pressure will build in tomorrow with light southwesterly winds that will usher warmer air into the region.
A weak cold front will move in mid morning through midday, shifting winds to the northeast to east around 5 KTs.
234 AM EDT Mon Apr 10 2023 High pressure extending into the area will persist through most of the week. Will likely see some thin cirrus drift overhead at times tonight with high pressure centered off to our east. With mainly clear skies and light winds, good radiational cooling will allow for temperatures to drop into the low to mid 30s by daybreak, with some cooler readings possible in outlying/sheltered areas.
Large area of strong high pressure is centered from the Eastern Great Lakes to the Mid Atlantic states early this morning. but a look just upstream shows increasing mid and high clouds to our west associated with a weak moisture-starved trough axis extending from the Central Plains thru the Upper Mississippi Valley. only result of the passage of this weak trough will be increasing mid and high clouds across our CWA today into tonight. Expect breezy conditions today in response to tightening pressure gradient ahead of and behind this trough axis. Guidance continues to indicate that upper level ridging is in control through the period.
- A storm system will bring clouds, precipitation, and cooler weather across the region for the end of the week/weekend.
(Today through Tuesday) Itâll be a windy start to the week as a tight pressure gradient develops between the weakened front to our south and strong high pressure building over the SE/Mid-Atlantic. High temperatures Monday and Tuesday will remain mild, ranging from the upper 70s to around 80 across the east coast metro areas, and into the lower 80s over the interior and west coast.
Low temperatures will be near seasonal levels, mainly in the lower 50s. On Tuesday, an upper lvl ridge will amplify over the Desert Southwest w/a cutoff low developing over the Gulf Coast. Tuesday afternoon will also be much drier w/sfc dewpoints falling into the lower 40s.
Building upper ridge and surface ridging will be the main features over the region keeping conditions tranquil. Due to surface ridging producing good radiational cooling conditions over northern Tennessee and southwest Virginia, temperatures will drop in the mid and upper 30s producing patchy areas of frost. Discussion: Quiet weather day today as light and dry winds out of the north combine with increasing mid level ridging moving over the region. Coldest temperatures are expected in northeast Tennessee and southwest Virginia where they should flirt with freezing again. Can't completely rule out seeing some isolated sub- freezing temperatures in the higher elevations of these counties, but the chance for frost appears to be more widespread tonight with the clear skies and mostly calm winds.
120 AM EDT Mon Apr 10 2023 High pressure moves to the Middle Atlantic Coast today.
124 AM MDT Mon Apr 10 2023 A broad upper ridge is building over the western CONUS, with some high clouds streaming into the northern plains through northwest flow. Upper ridge axis crosses the northern plains Tuesday, and a low pressure system over the Pac NW begins to flatten the ridge.
1133 PM EDT Sun Apr 9 2023 Strong High pressure over the northeast states will allow quiet weather to persist.
Warmer temperatures obviously exist under the low cloud cover vs the high cloud cover to the north. While the VFR cigs elsewhere should also persist through the afternoon, they may scatter out by late afternoon/early evening, although AC and cirrus cigs will increase late in the day ahead of a digging upper trough that will sink S into the region.
1213 AM CDT Mon Apr 10 2023 (The rest of tonight) Increased cloud cover and a light southeasterly breeze will keep temperatures warmer tonight than the last few nights.
With relatively cooler mid level temps associated with this feature spread over mainly the western half of the forecast area above dew points in the low-mid 50s, the increase in mid level lapse rates will result in MUCAPE approaching 1000 J/Kg.
1107 PM EDT Sun Apr 9 2023 An anomalous upper level ridge will build eastward from the Northern Plains into the Mid Atlantic region this week.
High pressure results in a clear, dry day with the beginning of a warming trend. High pressure becomes centered over the Southern Appalachians tonight with calm winds and clear sky.
Northwest breezes will begin to increase this evening well ahead of a trough of low pressure.
1246 AM CDT Mon Apr 10 2023 (Tonight through Monday night) Water vapor imagery shows a short wave trough moving southeast through the southern high plains of west Texas while a secondary vorticity maximum was near the Four Corners region. But better chances for rain will occur on Monday as the mid level short wave trough moves into the region and interacts with a slightly unstable air mass in place.
Mid-level ridge axis is situated in the OH Valley to Great Lakes while another over the Desert SW to Baja CA area. Low-level easterly flow will persist, with mostly deep dry moisture profiles around or less than a half inch, with most confined in the low boundary layer. Highs will peak slightly below normal in the low 70s. Low-level easterly trajectories continue tonight, keeping some cloudiness & near normal lows in the low 50s in SW half to slightly below normal in mid 40s in the ENE. /DC/ By Tuesday, mid-week dry conditions and mild temperatures are expected as a broad high pressure strengthens over the Ohio River Valley. This will inhibit moisture flow across the middle and lower Mississippi River Valley as a ridge builds into the region.
123 AM EDT Mon Apr 10 2023 High pressure will settle into the region late tonight through the middle of the week. Moisture will increase late in the week as a low pressure system moves northeast from the Gulf of Mexico leading to a chance of showers.
256 AM CDT Mon Apr 10 2023 Modest instability under the slow moving upper trof sliding southward across eastern Kansas will support widely scattered showers/isolated thunderstorms again today with better chances east of the turnpike. Sufficient bulk shear in the northerly flow aloft and a relatively low freezing level will support some hail again, mostly small, in the taller cells.
At the surface, winds will generally be light and variable under weak surface ridging. In addition to the storm potential, there is a small chance for some scattered showers across the southern Rolling Plains with moisture lingering on the backside of yesterday's trough axis over Central Texas.
Strong high-pressure grip over the lower Ohio Valley will promote stagnant and dry conditions during this period. Skies should remain mostly sunny with scattered high clouds, from the dissipated upstream trough, streaming across the area.
The close proximity of the developing mid/upper level low and sufficient low level moisture provides a slight chance of showers and thunderstorms later this afternoon and tonight. Model consensus keeps a low chance of convection Tuesday but with decreasing low level moisture (pwats falling near 1 inch) as subsidence increases on the western side of the upper low and weakening instability, confidence in even the low chances (15-20 percent) is below average. Tonight expect lows to be slightly cooler ranging 60-65 degrees (maybe a few upper 50s over the northern ranchlands) as the heights and thicknesses lower with the approaching upper low.
614 AM CDT Mon Apr 10 2023 The trough over the Upper Midwest will continue to slide to the east today, moving into the Great Lakes region. The associated cold front continues to slide to the southeast and will move into northwestern Missouri this morning before weakening and dissipating. In the meantime, an upper level ridge will build in over the region with increasing south to southwest flow.
A ridge of high pressure will continue to support warm high temps 5- 10 degrees above normal for early April through Tue. Ripening of the snowpack, runoff, and localized flooding will continue, aided by AM low temps not dropping below freezing in most valley population areas. The ridge will very slowly surrender to an advancing trough of low pressure starting Tue, but initial impacts should be confined to a few light rain/snow showers brushing across the Central Mntns and Upper Snake Highlands/Teton Valley region through Tue night, along with increasing SSW winds.
534 AM EDT Mon Apr 10 2023 An anomalous upper level ridge will build eastward from the Northern Plains into the Mid Atlantic region this week, keeping our weather clear to partly cloudy and dry with temperatures warming to well above normal.
Cooler temperatures return for the middle of the week, then warming into the weekend. A deep low over the Gulf of Alaska will shift southeast to western Washington through Tuesday with its associated trough brushing far Northern California. Heights remain high out in front of the trough on the back side upper high pressure near the four corners.
Low temps will be near seasonal levels, mainly in the lower 50s. On Tuesday, an upper lvl ridge will amplify over the Desert Southwest w/a cutoff low developing over the Gulf Coast. Tuesday afternoon will also be much drier w/sfc dewpoints falling into the lower 40s.
359 AM MDT Mon Apr 10 2023 An upper ridge will continue to build across the region with temperatures warming to well above normal for the next few days. Tuesday will be the warmest day of the week with the ridge moving east and an upper trof pushing into the Pacific Northwest. An Alberta low begins forming with a warm front lifting toward the Canadian border. As the low moves east, a cold front will sweep across eastern Montana. As the Pacific Northwest trof moves into the northern Rockies, temperatures will cool back closer to normal. With the trof, a Colorado low will lift into the central Plains.
536 AM MDT Mon Apr 10 2023 A upper level ridge extends from the Desert Southwest to the northern Rockies. Skies were mostly clear with patchy thin cirrus downstream of the upper ridge to the west.
Upper level ridge axis has moved east of the area. An upper low pressure system will move into the Pacific Northwest Tuesday.
1049 AM EDT Mon Apr 10 2023 High pressure over the mid-Atlantic states will drift south to the Carolinas during the next few days. while helping to circulate progressively warmer air into our region. with highs reaching well into the 70s and possibly even the lower 80s away from any lake influences by later on in the week. High pressure over the mid-Atlantic states will slowly settle south to North Carolina through this period. Moisture will be limited, so this trough will not produce much in the way of precipitation outside of perhaps a stray shower east of Lake Ontario Tuesday afternoon/evening.
553 AM EDT Mon Apr 10 2023 Surface conditions continue to be governed by expansive high pressure centered over the mid-Atlantic, maintaining light southwest flow over the airspace today. VFR conditions prevail through the TAF period, with just some thickening high cloud through the afternoon as a weakening upper trough slides overhead. Winds begin to veer more westerly by Tuesday morning with just some subtle influence from low pressure tracking near Hudson Bay. Some suppression of the low level anticyclone into the Ohio Valley today will increase the SW gradient across Se Mi. This will drive warmer air across the forecast area; 925 mb temps rising to +11C.
Clear skies and high pressure allowed most of the interior to warm well into the 70s yesterday with building midlevel clouds giving little resistance except along the coast. A trough will skirt the area today with high resolution models bringing the first hints of rain along the coast by noon with the heaviest rain arriving alongside a frontal passage late this evening. The pressure gradient aloft is meager, keeping even the highest gusts below 30 mph as the system passes early Tuesday morning. Cold air advection and clear skies associated with the system will bring another round of freezing temperatures by Tuesday night, though meager moisture transport at that point will limit the risk of any winter weather.
Synoptically, lingering troughiness to the northeast of the state should continue to move east as high pressure builds to our north through the period. Pressure gradient between low pressure associated with yesterday's fropa and building high pressure will support breezy north to northeasterly winds, along with periods of showers/storms during this time. A less warm airmass in place and with the help of some clouds temperatures in the afternoon remain in the upper 70s to the low to mid 80s. A low pressure area will develop across the northern Gulf by mid week leading to further unsettled weather through the end of the week.
451 AM MDT Mon Apr 10 2023 A broad upper ridge is building over the western CONUS, with some high clouds streaming into the northern plains through northwest flow. Upper ridge axis crosses the northern plains Tuesday, and a low pressure system over the Pac NW begins to flatten the ridge.
613 AM CDT Mon Apr 10 2023 Modest instability under the slow moving upper trof sliding southward across eastern Kansas will support widely scattered showers/isolated thunderstorms again today with better chances east of the turnpike. Sufficient bulk shear in the northerly flow aloft and a relatively low freezing level will support some hail again, mostly small, in the taller cells.
642 AM EDT Mon Apr 10 2023 High pressure extending into the area will persist through most of the week. Mid level ridge builds into the area from the north today. This will allow temperatures to drop into the low to mid 30s by daybreak. Milder temperatures with lows tonight from the upper 30s east to the lower 40s west. Highs on Tuesday generally warm into the lower 70s.
A cold front remains over southern Florida with high pressure to the north ridging along the eastern seaboard and producing northeast winds across the area. This has allowed some cooler air to filter into the area with low temps this morning dipping into the 50's and 60's. These cloudy skies and cooler air will allow for near normal daytime high temps this afternoon in the mid 70's north and low to mid 80's central and southwest Florida. A tight pressure gradient between strong high pressure to the north and a frontal boundary over southern Florida is producing gusty northeast winds and choppy seas over the eastern gulf waters. A low pressure area will develop across the northern Gulf by mid week leading to further unsettled weather through the end of the week.
Strong upper ridge of high pressure firmly in place over the southwestern US, producing clear skies and dry conditions for Colorado. temps as of 3 AM have cooled into the 20s to around 30F for the high valleys, and mid 30s to mid 40s for the plains. The ridge gradually edges to the east today across the Great Basin and Four Corners, then over the Rockies tonight. Maximum temperatures today are expected to climb to around 10 degrees above normal, with readings in the 60s to around 70F for the high valleys, and 70s to near 80F for the plains. Overnight lows will cool into the upper 20s to mid 30s for the high valleys, and upper 30s to mid 40s for the plains. 2) A new system moves in this weekend, bringing cooler temperatures and precipitation across the area.
919 AM EDT Mon Apr 10 2023 High pressure extending into the area will persist through most of the week. Milder temperatures with lows tonight from the upper 30s east to the lower 40s west. Highs on Tuesday generally warm into the lower 70s.
High pressure will remain the dominant weather feature over the area through Tuesday, bringing dry and warm conditions.
High pressure will bring near or record highs today and Tuesday.
611 AM CDT Mon Apr 10 2023 (Today) High pressure has continued to build in from the NE, allowing mostly clear skies.
Expect another clear and pleasant weather day today with temperatures expected to be around 5 degrees warmer than yesterday. High pressure results in a clear, dry day with the beginning of a warming trend. High pressure becomes centered over the Southern Appalachians tonight with calm winds and clear sky.
130 PM EDT Mon Apr 10 2023 High pressure extending into the area will persist through most of the week. Milder temperatures with lows tonight from the upper 30s east to the lower 40s west. Highs on Tuesday generally warm into the lower 70s.
This ridge moving southward from eastern Canada will make for a dry and slightly cooler than normal (around 73 degrees) far as highs are concerned.
119 PM EDT Mon Apr 10 2023 High pressure over the Appalachians will slowly drift southward this week, keeping our region dry, with a warming trend forecast.
1240 PM CDT Mon Apr 10 2023 Updated aviation portion for 18Z TAF issuance Dry and unseasonably warm weather during the work week, then cooler with a chance of rain for the upcoming weekend. Ridging will increase across the central and eastern CONUS during the week as a deepening trough shifts inland from the eastern Pacific. The trough will slowly progress east, eventually reaching in the forecast area late in the forecast period. Dry and unseasonably warm weather will persist throughout the work week as the forecast area is dominated by upper ridging.
We can expect another chilly early morning as temperatures drop into the 40s or 30s, but are expected to be a few degrees warmer than this mornings temperatures. Tomorrow we can expect similar conditions as today, with temperatures expected to be a few degrees warmer as the ridge strengthens over the eastern US.
306 PM EDT Mon Apr 10 2023 (This evening through Tuesday) High pressure will dominate the short term forecast with subsidence and dry air through most of the atmospheric profile. In fact, high pressure through the low- to mid-levels will dominate the majority of the CONUS from the Rockies eastward, which will force the polar jet stream northward across the Great Lakes region. Thankfully, easterly winds tend to correlate with cooler temperatures and with afternoon highs in the upper 60s today and low 70s tomorrow should keep fire weather criteria from getting too extreme.
1107 AM EDT Mon Apr 10 2023 An anomalous upper level ridge will build eastward from the Northern Plains into the Mid Atlantic region this week, keeping our weather clear to partly cloudy and dry with temperatures warming to well above normal.
308 PM CDT Mon Apr 10 2023 A slow moving trough of low pressure over east central Kansas may provide a focus for showers and storms later this afternoon and into the early evening hours. Ample 0-3km CAPE/low level lapse rates combined with marginal deep layer shear/mid-lvl lapse rates and an uncapped airmass ahead of a slow moving trough axis should allow for a cluster of storms to develop this afternoon/early evening within the exit region of a NE to SW oriented H25 jet. a mid/upper ridge will expand over the central CONUS bringing a prolonged period of mild and dry weather conditions through the period.
Coupled with low RH values and warmer temperatures in the upper 70s to low 80s, have upgraded the Fire Weather Watch to a Red Flag Warning for late Tuesday morning through the afternoon.
High pressure will be the main influencer of the weather over the next few days.
225 PM EDT Mon Apr 10 2023 High pressure will be firmly in place throughout the rest of the week. A weak cold front will move into the region Tuesday night before shifting northeast as a warm front. High pressure will remain across the region through the near term. Enough moisture and lift with a weak cold front will move into the region Tuesday night and looks to be sufficient for some mid and high level clouds. Some air advection as well Tuesday afternoon ahead of that front and some of the higher clouds should result in a warmer night with most spots in the upper 40's.
120 PM CDT Mon Apr 10 2023 Modest instability under the slow moving upper trof sliding southward across eastern Kansas will support widely scattered showers/isolated thunderstorms again today with better chances east of the turnpike. Sufficient bulk shear in the northerly flow aloft and a relatively low freezing level will support some hail again, mostly small, in the taller cells.
1113 AM MDT Mon Apr 10 2023 A broad upper ridge is building over the western CONUS, with some high clouds streaming into the northern plains through northwest flow. Upper ridge axis crosses the northern plains Tuesday, and a low pressure system over the Pac NW begins to flatten the ridge.
Temperatures are forecast to drop into the lower to middle 60s tonight. Drier air pushes in from the north Tuesday evening, setting the stage for a cooler Tuesday night with widespread middle to upper 50s expected for most of the County Warning Area (CWA) CWA and the lower 60s for the Lower Rio Grande Valley and along the coast.
221 PM EDT Mon Apr 10 2023 An anomalous upper level ridge will build eastward from the Northern Plains into the Mid Atlantic region this week, keeping our weather clear to partly cloudy and dry with temperatures warming to well above normal.