Aikyam-Lab/Synoptic-Bench huggingface dataset:
Cloud cover will gradually erode through this evening across northwest Montana with rising heights and building high pressure. A warm and pleasant Autumn day is expected Saturday under high pressure, with highs reaching into the 80s and even into 90s across lower elevations of Clearwater and Idaho counties, including Orofino and Riggins.
(This evening through Saturday Night) Aside from increasing scattered clouds across southwestern Arkansas, mostly clear skies prevail across the ArkLaTex, building from the north and east as moisture wraps around the vast low pressure positioned over the Ohio Valley near its confluence with the Mississippi River as it absorbs the remnants of Hurricane Helene. That being said, expect temperatures to bottom out in the low to mid 60s across the region before rebounding into the middle to upper 80s across much of the region. The exception will be where clouds linger north of I-20, with highs climbing only into the low to mid 80s in southwestern Arkansas.
844 AM PDT Fri Sep 27 2024 A little more warming will occur through Saturday as high pressure over the Southwest becomes centered over Arizona.
A cold front will extend from the remnants down the US east coast and across central FL.
nothing as the skies are void of any cloud cover for hundreds of miles as the area resides on the northern edge of an area of high pressure.
Temperatures may rise a few more degrees this afternoon but widespread clouds should limit how much warmer temps can go. Key messages - A closed upper low over the Ohio River Valley this weekend with a isolated showers possible north of I-20. Low temperatures tonight will be in the low to mid 60s. A closed upper level low pressure system over the Ohio River Valley crawls eastward toward the Mid Atlantic States this weekend.
As Helene moves to our north through Kentucky today and Fujiwaras around an upper level low centered near Paducah, bulk of the rain will shift into the western 2/3rds of the midstate and continue the rest of today into Saturday, although rainfall rates will decrease. Despite the high rainfall totals, low rainfall rates and our antecedent drought conditions should continue to keep the flood threat low.
(Tonight through Saturday night) The pressure gradient remains weak into the weekend in the wake of Hurricane Helene across the western Gulf of Mexico, with an elongated mid level trough from the system extended across the lower Texas coast. Highs today should reach into the low to mid 90s, with the southwesterly downsloping winds kicking temperatures a few degrees warmer for Saturday afternoon, into the mid to upper 90s.
1212 PM CDT Fri Sep 27 2024 - The highest rain chances (50-90%) will occur this afternoon across the eastern Ozarks. Winds will start to increase by late morning with the highest gusts occurring in the afternoon hours. Areas east of Springfield have the higher chances (over 70%) while areas west of Springfield are much lower in the 10-15% range. Saturday: Low-end rain chances (10-20%) will stick around for areas along and east of Highway 63 as the low pressure system slowly pushes east. High temperatures will reach the lower 80s west of I-49 with the rest of the area sitting in the 70s.
1242 PM CDT Fri Sep 27 2024 (Today through Saturday) The ridging pattern weakened slightly overnight but will get a slight recharge today through Saturday as Hurricane Helene weakens and gets absorbed into the upper low holding steady over the mid- Mississippi Valley. The upper low will deepen and wobble slightly as the tropical cyclone infused into the larger system, leaving a slight boost in northerly winds over Central TX for the next two days.
Satellite across much of the central and western US shows clear skies and dry air settled in under this ridge. The upper level pattern will shift the ridge east into the weekend, with a trough and accompanying cold front following into the beginning of the work week. Unfortunately, the trough doesn't look to provide us with appreciable precipitation, as the low is projected to stay in Manitoba as it passes our area.
140 PM CDT Fri Sep 27 2024 - The highest rain chances (40-90%) will occur this afternoon across the eastern Ozarks.
/Issued 1114 AM CDT Fri Sep 27 2024/ /This afternoon through Saturday/ Much of the Lone Star state will remain on the western edge of a deep area of low pressure centered across Western Kentucky and Tennessee. There will be some passing high clouds as moisture from Helene wraps around the low and spreads southward, this will be most noticeable across the northeast zones on Saturday.
132 PM EDT Fri Sep 27 2024 Dry weather returns into the weekend as high pressure moves overhead.
Tenacious high pressure over the Desert Southwest seems to not realize it's nearly October and refuses to weaken. Meanwhile, the remnants of Helene will perform a Fujiwara dance across the TN and OH valleys with a meandering mid-latitude cyclone, influencing the orientation of flow to its west. This will result in a slightly cooler airmass being injected into our stubborn high pressure over the weekend.
(Tonight through Saturday night) Central Texas is on the eastern edge of an upper level high centered over southern AZ/NM with flow from the north. The low level this afternoon is fairly weak and generally from the north.
Light- to- moderate rainfall continues to push into areas mostly south of I-72, and this will be the case until tonight when a lobe of vorticity associated with the upper low pivots northwest and brings a band of rainfall further north in between the Illinois River Valley and I-55. Additional bands of rainfall will push into central Illinois tomorrow and tomorrow night as multiple spokes of vorticity rotate around the upper low.
At the same time, a closed low will continue to shift northeast across northern Alabama and Tennessee. This low is expected to merge with the remnants of Helene later tonight before stalling over the Tennessee Valley.
- A return to cooler, more seasonable weather is forecast for the first few days of October behind a cold front. Lows tonight will range from the mid 50s nw to the lower 60s se. High clouds will also gradually thin out as the day progresses with highs in the lower 80s nw to the mid 70s se.
Clouds will continue to wrap around the remnant circulation of Helene as she gets absorbed by an upper low over the lower OH Valley.
308 PM EDT Fri Sep 27 2024 Dry weather returns into the weekend as high pressure moves overhead.
The highest rain chances will remain over southwest Florida.
134 PM EDT Fri Sep 27 2024 - Becoming windy today into early tonight; winds 20 to 35 mph with the highest wind gusts to 50 mph south of US 30.
252 PM PDT Fri Sep 27 2024 Not a lot going on as the dry cold front has stalled out and become more stationary this afternoon. Temperatures will trend warmer today compared to yesterday, so it's definitely not moving through southern Oregon. The quiet weather will continue into this weekend with deep zonal flow over the forecast area and a ridge built in over the four corners. Temperatures will remain normal if not a few degrees warmer than normal for this time of year. Eventually, an upper level wave will move through the state of Washington with a strong and very identifiable dry cold front flying down from British Columbia. This will impact our weather in a few ways with some colder air east of the Cascades and high pressure building rapidly in the same area.
The CWA will mostly be affected by the remnants of Helene as the outer remnants of the rain bands circulates around the low pressure over the TN/OH Valley Region. Overnight lows will dip into the lower to mid 60s and cloud cover is expected to decrease from the south overnight. At the same time, a closed low will continue to shift northeast across northern Alabama and Tennessee. This low is expected to merge with the remnants of Helene later tonight before stalling over the Tennessee Valley.
Abundant low level moisture will keep lows tonight generally in the lower 60s to upper 50s.
Forecasting the anomalous heat is a bit more confidence boosting however as this ridge aloft will not be budging any time soon. Luckily the nights will be cool though the freezing mark will looks limited to the higher terrain and valleys. This of course trends the forecast even drier and warmer as the strong Pacific High cell basically replaces the 4 Corners one we have in place now. Some light showers with the occasional thunderstorm have developed over the higher terrain and will linger through sunset.
/NEW/ /Through Saturday Night / The remnants of Helene have now been absorbed into the much larger area of low pressure currently sitting atop TN and NC.
Issued by National Weather Service Houston/Galveston TX 720 PM EDT Fri Sep 27 2024 (Through Saturday) The remnants of Helene will merge with an upper level low over TN/KY by this evening.
747 PM CDT Fri Sep 27 2024 (This evening through Saturday Night) Aside from increasing scattered clouds across southwestern Arkansas, mostly clear skies prevail across the ArkLaTex, building from the north and east as moisture wraps around the vast low pressure positioned over the Ohio Valley near its confluence with the Mississippi River as it absorbs the remnants of Hurricane Helene. That being said, expect temperatures to bottom out in the low to mid 60s across the region before rebounding into the middle to upper 80s across much of the region. The exception will be where clouds linger north of I-20, with highs climbing only into the low to mid 80s in southwestern Arkansas.
Northeast winds 20 to 35 mph with the highest wind gusts to 50 mph south of US 24.
712 PM EDT Fri Sep 27 2024 Dry weather returns into the weekend as high pressure moves overhead.
Bands of -RA and DZ continue to drop southeast around the low in KY.
Clear skies overnight will allow for slightly cooler temperatures in the valleys. The high pressure will peak over the region tomorrow, bringing temperatures near record highs in the 90s in the Snake River Valley.
635 PM CDT Fri Sep 27 2024 - The highest rain chances (40-90%) will occur this afternoon across the eastern Ozarks.
Issued by National Weather Service Hanford CA 220 PM PDT Fri Sep 27 2024 Dry, seasonally hot weather is forecast through the weekend due to high pressure aloft over the area.
Currently - The remnants of Helene continues to wind down over the southern Appalachians this evening while Atlantic ridging is slowly swinging northwestward out of the Bahamas and Cuba. Short Term Update - The Atlantic ridge will continue to swing slowly northwestward nearer the island chain through the overnight period. Expect another warm and humid night with overnight lows not moving out of the lower 80s and dew points remaining quite high in the upper 70s. Gentle southerly breezes will persist on Keys waters through the overnight period due to an Atlantic ridge reaching southwestward across the Bahamas and Cuba. Satan Shoal is now under 5 feet and Pully Ridge is under 7 feet.
438 PM MDT Fri Sep 27 2024 - Dry weather, much warmer than average temperatures, and elevated to potential critical fire weather conditions this weekend. Current surface analysis shows dissipating cold front south and east of the area, with weak high pressure northeast of the region. A weak Pacific cold front is located over the Pacific NW. Upper level analysis shows strong ridge of high pressure over the southwest US, starting to expand north again across the Rockies. Hot weather returns this weekend as southwest US ridge continues to build back north and east across the region.
943 PM CDT Fri Sep 27 2024 Showers associated with an upper level low will continue to diminish in coverage tonight as it weakens and shifts south into north Mississippi.
No changes to headlines are expected at this time, with wind gusts of 50-60 mph already being reported within the High Wind Warning area. Light- to- moderate rainfall continues to push into areas mostly south of I-72, and this will be the case until tonight when a lobe of vorticity associated with the upper low pivots northwest and brings a band of rainfall further north in between the Illinois River Valley and I-55. Additional bands of rainfall will push into central Illinois tomorrow and tomorrow night as multiple spokes of vorticity rotate around the upper low.
625 PM CDT Fri Sep 27 2024 (This evening through Saturday) Dry northerly flow remains the story aloft through Saturday east of a large blocking high anchored over Arizona. At the surface, a N-S ridge axis currently just east of our forecast area will shift west tonight and remain with us through Saturday. Accompanying this ridge will be lower thicknesses for Saturday, so high temps should end up a few degrees cooler than today on E-NE winds.
552 PM CDT Fri Sep 27 2024 (This afternoon through Saturday night) Deep northerly flow continues across the region as we remain caught between upper ridging to our west and a large, cut-off low (remnants of TS Helene) over the Mississippi River Valley. This flow regime will usher in a weak cold front overnight, but don't look for any major cooldown. Due to the front arriving near our coolest time of the morning, elevated winds and mixing will keep temperatures warmer than what we've see the last few days.
Thanks to a strong ridge of high pressure aloft, it is late September and it is hot across all of Southeast Arizona. How hot it is you might be asking? At 1159 AM MST, the Tucson International Airport (KTUS) hit 105 degrees, on a pace of 3-5 degrees warmer than this time yesterday in which our afternoon high temperature was 105 degrees.
836 PM MDT Fri Sep 27 2024 A fast westerly flow aloft continues across the region in between a building upper level ridge to south and broad upper troughing across western Canada. Surface winds have decoupled this evening and will continue to diminish overnight as high pressure builds across the area with mainly clear skies, except for some thin mountain wave generated high clouds across portions of north- central MT.
Latest WV satellite imagery is showing a cutoff upper low off to our south, lumbering toward Point Conception, while a large but shallow upper trough approaches the PNW. Local ridging over NWRN CA between these two features has driven interior temps about 10 deg above normal this afternoon. This local ridge is expected to break down as the cutoff low and trough over the NEPAC progress eastward tonight.
1041 PM EDT Fri Sep 27 2024 Dry weather returns into the weekend as high pressure moves overhead.
612 PM EDT Fri Sep 27 2024 Low pressure will exit across the Maritimes tonight.
Light- to- moderate rainfall continues to push into areas mostly south of I-72, and this will be the case until tonight when a lobe of vorticity associated with the upper low pivots northwest and brings a band of rainfall further north in between the Illinois River Valley and I-55. Additional bands of rainfall will push into central Illinois tomorrow and tomorrow night as multiple spokes of vorticity rotate around the upper low. Residual moisture and forcing from Helene will linger through Sunday as the upper low slowly degenerates over the Ohio River Valley.
(Today and tonight) West central Texas remains between an upper-level ridge over the Four Corners region and the remnants of Post-Tropical Cyclone Helene over the Mid-South.
Satellite tonight remains relatively clear under this high pressure system over our area.
334 AM EDT Sat Sep 28 2024 Post-Tropical Cyclone Helene has been absorbed by a large low pressure system, and was now located over western Kentucky.
A fast westerly flow aloft continues across the region in between a building upper level ridge to south and broad upper troughing across western Canada. Surface winds have decoupled this evening and will continue to diminish overnight as high pressure builds across the area with mainly clear skies, except for some thin mountain wave generated high clouds across portions of north- central MT.
1223 AM CDT Sat Sep 28 2024 - The highest rain chances (40-90%) will occur this afternoon across the eastern Ozarks. This nearly stationary movement is occurring as the tropical center of circulation will be momentarily trapper under a ridge of high pressure with no upper level steering winds to move it.
1227 AM CDT Sat Sep 28 2024 (This afternoon through Saturday night) Deep northerly flow continues across the region as we remain caught between upper ridging to our west and a large, cut-off low (remnants of TS Helene) over the Mississippi River Valley. This flow regime will usher in a weak cold front overnight, but don't look for any major cooldown. Due to the front arriving near our coolest time of the morning, elevated winds and mixing will keep temperatures warmer than what we've see the last few days.
High pressure aloft will be the dominant weather feature over the coming week delivering mainly clear skies, light winds, above normal temperatures and dry conditions. High pressure will remain centered over Arizona. High pressure will continue to be centered over Arizona with only a slight shift eastward on Sunday. Look for high temperatures ranging from 10 to 20 degrees above normal each day with only a slight dip on Sunday with the eastward shift of the high.
(Today through Sunday afternoon) Latest water vapor imagery indicates a broad trough to the east over the Ohio and Middle Mississippi Valleys that includes the remnants of Helene, and ridging to the west over the Four Corners and Rockies, both of which are responsible for persistent northerly flow over the region. A dry boundary layer and ideal radiational cooling conditions tonight will allow for a somewhat chilly, but near normal night as lows drop into the middle 50s to lower 60s, with upper 40s possible across portions of the Marfa Plateau and in the higher terrain of the Davis Mountains.
Bands of -RA and DZ continue to drop southeast around the low in KY. (Saturday through Sunday night) Models don't move this low much, but eventually shift it east northeast Saturday through Sunday into the Ohio Valley. This will keep scattered to likely light precipitation in the forecast through Sunday, with the highest chances mainly near and north of the Tennessee River. Cloud cover through the weekend with the departing upper low will keep temperatures lower (upper 60s/lower 70s Saturday and low to mid 70s Sunday) near and north of the Tennessee River.
The CWA will mostly be affected by the remnants of Helene as the outer remnants of the rain bands circulates around the low pressure over the TN/OH Valley Region. Overnight lows will dip into the lower to mid 60s and cloud cover is expected to decrease from the south overnight. At the same time, a closed low will continue to shift northeast across northern Alabama and Tennessee. This low is expected to merge with the remnants of Helene later tonight before stalling over the Tennessee Valley. With the low migrating towards the northeast, rain chances will begin to gradually decrease across the north before coming to an end on Sunday.
pdf Mostly clear skies this evening as a cold front lingers over north central Fl into the the Atlantic waters. Highs will be in the low 90s south of Jacksonville and into north central FL with upper 80s elsewhere. A cold front will extend from the remnants down the US east coast and across central FL.
(Through Saturday) The remnants of Helene will merge with an upper level low over TN/KY by this evening. (Saturday night through Sunday night) The aforementioned upper low will remain over western Kentucky through Sunday night, resulting in deep layer southwesterly flow persisting over the region.
The ridge is breaking down as a mid-level low near the Channel Islands connects with weak troughing to the north. Overall it will be a nice day across the cwa with cooler temperatures, light onshore wind, and plenty of sunshine.
High pressure at the surface will dominate the weather pattern in the near term, maintaining dry, fairly pleasant conditions. Expect daytime highs today and tomorrow to be a few degrees above normal for this time of year, reaching the low to mid 90s. Overnight lows tonight will be below average, generally in the mid to upper 60s with the low to mid 70s along the coast.
This low will slowly drift eastward into central Kentucky by Sunday morning.
Tenacious high pressure over the Desert Southwest seems to not realize it's nearly October and refuses to weaken. Meanwhile, the remnants of Helene will perform a Fujiwara dance across the TN and OH valleys with a meandering mid-latitude cyclone, influencing the orientation of flow to its west. This will result in a slightly cooler airmass being injected into our stubborn high pressure over the weekend. Greater relief will come by midweek when a potent upper low traverses CAN and its associated broad trough kicks off a backdoor front down the Great Plains.
Will maintain a moderate risk of rip currents, but this is on threshold of a low risk due to the low sea heights.
354 AM EDT Sat Sep 28 2024 Dry weather returns into the weekend as high pressure moves overhead.
(Today and tonight) A stagnant upper air pattern will result in another dry and quiet weather day for our region as we remain positioned between upper ridging to our west and broad troughing to our east. Slightly more robust northeast winds and modest decreases in layer thicknesses will keep temperatures a couple of degrees cooler compared to yesterday over most of the forecast area today, though highs will still be 5 to 10 degrees above normal.
TODAY: Light winds and clear skies persist again today, as we remain planted under the low-lvl thermal ridge.
Winds have mostly slacked off, but may still be breezy at times across the higher terrain. Expecting temperatures in the lower 60s this morning with a few locations dropping into the 50s across the mountains. Temperatures will rise to near normal this afternoon with 70s and lower 80s across the lowlands; 60s and 70s in the mountains.
(Today through Sunday Night) A picture-perfect weekend is in store for Southeast Texas with drier air/northerly winds continuing to prevail as the remnants of Helene and an upper level low remain to our northeast. Let's talk about the good stuff first, and that's the low temperatures! Temperatures out the door this morning will be in the low to mid 60s for most locations, and expecting the same for tonight/Sunday morning as well. This was hinted at earlier, but the drier air in place will heat rather efficiently as we'll see temperatures this afternoon top out mainly in the low 90s. 850 mb temperatures will be slightly higher on Sunday (mainly west of I-45), so we'll see a slight bump in our high temperatures into the low to mid 90s with higher temperatures west of I-45.
148 AM EDT Sat Sep 28 2024 The area of low pressure associated with Helene continues to bring unsettled weather to the region through the weekend. As the low pressure continues to spin near the KY/IN/IL borders, another push of energy will rotate around the low, pushing an additional slug of rainfall into the region on Saturday morning.
Continued clouds and lighter NW winds will persist, but rain chances will be much lower and temperatures will be a bit warmer than today.
Winds aloft will turn more southerly today as the ridge axis shifts east, which will send daytime highs warmer yet again. The only impact in the forecast at this time will be elevated winds Sunday afternoon and night as a result of the tightening pressure gradient as a trough shifts eastward to our north.
1228 AM CDT Sat Sep 28 2024 (Tonight through Saturday night) Central Texas is on the eastern edge of an upper level high centered over southern AZ/NM with flow from the north. The low level this afternoon is fairly weak and generally from the north. Sunday morning will be a couple of degrees cooler than Saturday.
1230 AM CDT Sat Sep 28 2024 (Tonight through Saturday night) The pressure gradient remains weak into the weekend in the wake of Hurricane Helene across the western Gulf of Mexico, with an elongated mid level trough from the system extended across the lower Texas coast. Highs today should reach into the low to mid 90s, with the southwesterly downsloping winds kicking temperatures a few degrees warmer for Saturday afternoon, into the mid to upper 90s.