Aikyam-Lab/Synoptic-Bench huggingface dataset:
628 AM CDT Wed Apr 12 2017 Passage of an 850 hPa ridge through the area overnight has allowed winds to become southwesterly at that level which will bring a warming trend to the area today. An increase in 850 hPa temps of about 3 to 4 degrees C will translate to surface temperatures about 10 degrees F warmer than yesterday, with afternoon highs in the middle 70s across most of the area. Boundary will sag slightly south into north central MO on Thursday, and it's not out of the question that it could spark off a few showers or storms across that area before retreating as a warm front Thursday evening.
1127 AM EDT Wed Apr 12 2017 A cold front with showers clears the mountains this morning. High pressure builds in today, remaining Thursday.
1247 PM EDT Wed Apr 12 2017 Dry conditions will prevail until the next low pressure system impacts the region this weekend. Daytime max temperatures will be slightly cooler. High pressure will support dry conditions and a warming trend in temperatures through the period. Minimal change made in the extended with only minor adjustments in warm and cold frontal timing.
Light winds are expected to become east as high pressure moves east across the great Lakes region.
856 AM EDT Wed Apr 12 2017 A short wave trough along the northern Gulf coast early this morning will continue to move slowly east across the Florida Panhandle this afternoon and then into the northern Florida peninsula tonight. This feature is helping to weaken the upper level ridge that has been in place over the region the last several days and the suppression from the ridge will be slightly less across the region the remainder of today. This feature combined with daytime heating and less suppression from the upper ridge will support chances for some much needed showers (Pops in the 20 to 30 percent range) across central and southern portions of the forecast area during the afternoon and early evening hours as it moves across the region, with a mix of sun and clouds expected elsewhere.
With all that being said, I don't see strong updrafts occurring today/tonight unless the low level jet kicks in later and helps create a more favorable environment.
These conditions will aid in expected afternoon temperatures to be near/slightly warmer to yesterdays highs with mid/upper 70s common.
/issued 737 AM CDT Wed Apr 12 2017/ For the 12/12Z terminal forecast, IFR flight categories will prevail through the mid morning when MVFR conditions look to return toward late morning, and by mid day the low ceilings are forecast to improve and returning to VFR categories.
740 AM EDT Wed Apr 12 2017 Cooler conditions and lingering showers in the higher elevations and near the Canadian border are expected for Wednesday after the passage of a cold front.
There is a slight chance for showers along the Rio Grande Plains for much of today as remnant of a cold front pushes back to the north and into the southwest region of south central Texas as a warm frontal boundary. Overall high temperatures for today are in the lower 70s to lower 80s range. Overnight lows will range from the lower 60s across the Hill Country to mid 60s along and south of Highway 90.
737 AM CDT Wed Apr 12 2017 For the 12/12Z terminal forecast, IFR flight categories will prevail through the mid morning when MVFR conditions look to return toward late morning, and by mid day the low ceilings are forecast to improve and returning to VFR categories.
accumulation of 3 to 6 inches with up to a foot across the highest elevations are expected with snow levels 4500-5000 feet. Preceding a broad upper low, a cold front is seen just offshore at this time in area of cooling tops in infrared satellite imagery.
708 AM EDT Wed Apr 12 2017 High pressure over the western Great Lakes will move east across the area today. A warm front will develop over the midwest on Thursday.
637 AM CDT Wed Apr 12 2017 Surface analysis showing high pressure centered over northern IL with mostly clear skies across our area. For today, warm air advection/isentropic upglide in advance of a mid- level trough pushing east through the Plains will increase cloud cover though the day along with increasing shower chances through the afternoon. Otherwise, looks like a mild day as temperatures top off in the middle 50 to the lower 60s. Showers move back into the area after late Thursday night south of I- 90 as another mid-level wave and developing surface warm front push toward the area from the Central Plains.
Surface analysis showing high pressure centered over northern IL with mostly clear skies across our area. For today, warm air advection/isentropic upglide in advance of a mid- level trough pushing east through the Plains will increase cloud cover though the day along with increasing shower chances through the afternoon. Otherwise, looks like a mild day as temperatures top off in the middle 50 to the lower 60s. Showers move back into the area after late Thursday night south of I- 90 as another mid-level wave and developing surface warm front push toward the area from the Central Plains.
940 AM EDT Wed Apr 12 2017 A weakening cold front will move into the Midlands this afternoon and move south of the CSRA overnight. High pressure will be over the area this weekend.
940 AM EDT Wed Apr 12 2017 High pressure will build into the area today and move off to the east tonight.
1047 AM EDT Wed Apr 12 2017 Cooler conditions and lingering showers in the higher elevations and near the Canadian border are expected for Wednesday after the passage of a cold front.
936 AM EDT Wed Apr 12 2017 A weakening cold front will move into the Midlands this afternoon and move south of the CSRA overnight. High pressure will be over the area this weekend.
645 AM CDT Wed Apr 12 2017 High pressure is in control of the Arkansas weather and will be through the period. Today Through Thursday Night An upper ridge is building over the Southern Plains this morning. An upper low pressure system will be near the Pacific Northwest this afternoon and will move north tonight and Thursday as it will be blocked by the upper ridge to the east. An upper low will develop on the lee side of the Rockies late Thursday and move northeast into the Plains through late Thursday night. High pressure will continue to build over the area today and will remain over the area through Thursday. Warmer temperatures are expected with the ridge in place.
Upper level low pressure is crossing the WA Cascade crest this morning. The low will track E/NE through this aftn. with the axis of the trough across NE WA/northern ID by late this aftn. Precip will diminish as the low gradually moves out of the local area with all areas mainly dry this aftn. In the wake of the low. High temperatures will be cooler than the past couple of days. with mid/upper 80s for the lower elevations and mainly 70s for the higher elevations.
/issued 708 AM CDT FRI JUL 22 2016/ A few storms in the coastal waters moving west and under the base of the ridge.
Showers will taper off across Western Washington this morning as a trough moves east of the Cascades.
Flattened upper level ridge was over the area with a short wave moving across southern MAN. Upper ridge axis will move over the area Fri night. Upper level trough off the Pacific northwest coast will move across southern MAN and the forecast area Sat night.
940 AM CDT FRI JUL 22 2016 Cooler outflow from the convective system in northeastern MO should track through much of, if not the entire forecast area. Even without the outflow boundary moving through, temperatures were a degree or two cooler than 24 hours ago. Where the clouds and rain cooled air are most prevalent, the northeastern quadrant of the forecast area, temperatures are about 15 degrees cooler than a day ago. Given all this, highs in the northeast will likely only be in the lower 90s or near 90 this afternoon. Plus it's deeper into the upper high.
1059 AM EDT FRI JUL 22 2016 Currently - Weak surface ridging over the southeastern United States is keeping light east to southeast flow across the Florida Keys. The subtle inverted trough is weakening and has mostly shifted west of our area. Short Term Update - Weak ridging will hold through the afternoon, and winds will remain light out of the east to southeast this afternoon. Weak high pressure over the southeastern United States will keep light mostly east to southeast breezes across Florida Keys waters this afternoon.
Flow aloft has turned westerly behind a long wave trough that moved onshore earlier this morning. The upper level pattern will alternate between weak zonal flow and weak troughing. The ridges of the coast range will be especially dry and breezy during the overnight hours as low level offshore flow develops during the nighttime hours. Stronger winds will return to the coastal waters as the thermal trough returns to the coast.
Warmer mid level temps are forecast to move into far western AZ later today. The axis of strong high pressure will shift over or just south of the forecast area today through Saturday.
959 AM EDT FRI JUL 22 2016 High pressure dominates the region's weather today providing sunshine and heat. With lower dwpt air arriving combined with strengthening subsidence as high pressure builds in behind the departing front.
Significantly warmer temperatures are expected for inland areas over the weekend, while continuing onshore flow moderates conditions nearer the coast. Early morning temperatures around the Bays are generally running in the mid to upper 50s, a couple of degs warmer than at the same time yesterday. A large-scale upper level high is now centered near the panhandle of Oklahoma with a ridge extending westward through southern California.
736 AM EDT FRI JUL 22 2016 Upper ridge centered west of the MS river and extending eastward across GA will continue as the dominant weather feature through the short term. except maybe any remnant boundaries and the persistent lee side trough.
TFJ An upper trough will move inland across the Pacific NW today allowing for a strong diffluent SW flow to develop across the area. The cold front is expected to reach the North Dakota border early Saturday morning when the upper trough moves through the forecast area. The cold front and upper trough moves to the east Saturday morning leaving most of the area in a dry slot.
The upper-level ridge is still in place over the TX/OK panhandles providing hot weather across much of the country. The ridge will weaken slightly today as disturbances round the eastern edge and make way into the TN Valley. Heat index values will reach 105 to 109 with the highest values in NW AL.
In the very near term, a few isolated, outflow enhanced showers and weak thunderstorms may be found as far east as the highway 83 corridor, which somewhat mirrors a few recent HRRR runs for the early morning reflectivity trends. Hot conditions are forecast once again today as a strong 700 mb ridge influences the central High Plains. Thunderstorms generally have a better chance of occurrence each day going forward, as the atmosphere become less stable in the mid levels and the 700 mb hot ridge begins to weaken. A trough of low pressure will remain nearly stationary in far eastern Colorado.
Bigger impact today will be the heat and stuffy humidity with Heat Indices in the low-mid 90s for a few hours.
604 AM PDT Fri Jul 22 2016 Scattered showers and thunderstorms will accompany the passage of a cold front today.
Upper level trough is moving inland across Western Washington this morning. Cold front is moving through the region a bit slower than anticipated. Temperatures across the region are running a bit warmer than yesterday at this time, but will be hampered by cold air advection as cooler air aloft moves into the region.
905 AM EDT FRI JUL 22 2016 High pressure ridge North of the region will sink South today. High pressure ridge that is North of the region will sink South Today.
1208 PM EDT FRI JUL 22 2016 A weak cold front over the northern great Lakes will sag south across the area late tonight or early Saturday.
1041 AM EDT FRI JUL 22 2016 High pressure along the east coast will drift south today and allow a weak cold front to sag south across the central Great Lakes tonight.
1150 AM CDT FRI JUL 22 2016 18Z TAF Cycle VFR conditions through 18Z Saturday at all three TAF sites as an upper ridge remains in place. /Issued 353 AM CDT FRI JUL 22 2016/ WIDESPREAD TRIPLE-DIGIT HIGH TEMPERATURES EXPECTED ACROSS THE PANHANDLES TODAY AND SATURDAY AS BROAD RIDGE OF HIGH PRESSURE ALOFT REMAINS OVER THE SOUTHERN PLAINS AND SOUTHWEST. A FEW THUNDERSTORMS WILL BE POSSIBLE ACROSS NORTHWEST SECTIONS OF THE FORECAST AREA MAINLY THIS AFTERNOON AND THIS EVENING WHERE STEEPER LAPSE RATES EXPECTED IN VICINITY OF SURFACE TROF.
Remaining mid-level moisture will clear the southern border by late Saturday, ending the low rain chances.
Chattanooga Airport, TN 98 75 96 76 / 20 10 30 20 Knoxville McGhee Tyson Airport, TN 95 73 94 72 / 20 20 40 20 Oak Ridge, TN 96 73 94 72 / 20 10 30 20 Tri Cities Airport, TN 93 69 92 70 / 20 20 40 30.
Shower/storm chances should gradually diminish tonight as instability decreases, though low chances will continue overnight in proximity to the trough with it's advancement to the I 70 corridor by morning. Remaining mid-level moisture will clear the southern border by late Saturday, ending the low rain chances.
These storms will make it to the west coast after 18Z with the highest coverage occurring closer to 22Z. High pressure north of the area will keep a predominant east southeast wind flow over the gulf waters.
708 AM CDT FRI JUL 22 2016 A few storms in the coastal waters moving west and under the base of the ridge.
/ISSUED 415 AM CDT FRI JUL 22 2016/ At 3 AM, a weak area of high pressure was located over extreme SW LA. At 850 mb, high pressure was located N MS with a patch of deeper moisture undercutting the ridge over S LA. At 300 mb, a strong upper level high pressure system was centered over NW TX and this feature is sprawling much of the southern U. Convective temperatures cool into the lower 90s but still some weak capping noted in the 750-700 mb layer. The upper level ridge plaguing the region will begin to shift west so feel the lower heights coupled with the lower convective temps and moisture should foster slightly higher rain chances on Saturday.
627 PM EST Sun Nov 13 2016 High pressure will dominate our weather through Monday, with fair and dry conditions.
400 PM MST Sun Nov 13 2016 Weak transitional ridging sets up over the area for the short term period, keeping our weather warm and dry with mostly sunny to partly cloudy skies.
A second trough sets in the flow upstream over southern British Columbia and has a slight tap on pacific moisture. South of this a large ridge is developing over California. Tonight into Monday: The ridge portion behind the exiting trough will move through the area.
943 PM EST Sun Nov 13 2016 High pressure will maintain dry weather ahead of a mid week front.
Rising moisture in both the lower and upper levels of the atmosphere will lead to an increase in cloudiness on Monday with mild temperatures.
629 PM EST Sun Nov 13 2016 High pressure weakens today.
645 PM EST Sun Nov 13 2016 As upper low now begins to shift east of the area. We still have 1018mb closed low off the GA coast which continues to spread moisture back inland but we also see that nose of high pressure has eased into the Atlanta metro allowing for moth lighter winds as well as less in the way of precipitation through the I85 corridor.
/BB/ Tonight through Monday, continued dry with colder than normal temperatures again tonight followed by slightly warmer than normal temperatures again Monday. /22/ Upper level NW flow will develop over Lower Mississippi River Valley late Monday as upper level ridging takes place over the SW US.
626 PM EST Sun Nov 13 2016 High pressure will result in another night with clear skies and cool temperatures by morning.
Southwest winds will shift from the northwest and north as a cold front moves through around 06-15Z. /issued 245 PM CST Sun Nov 13 2016/ WV imagery shows the exiting upper trough now over NE OK/SE KS, leaving West Texas and Southeast New Mexico under dry, NW flow aloft. Subsidence on the back side of the trough has allowed skies to finally clear out, allowing afternoon temps to climb to above- normal in SW sfc flow. NW flow aloft will transition to meridional over the next couple of days, w/a weak trough/front moving thru the area late tonight and Monday.
High pressure has shifted south of the cwa while a weak cold front (more of a wind shift line) extended from western MN to northern Nebraska. Tonight: High level cirrus clouds will gradually increase and along with southwest winds, temperatures will be warmer than the past couple of nights. Monday: An upper level trough and weak cold front moves across the cwa during the day. However, forcing is weak and this system is moisture-starved due to high pressure across the southern states. Maximum temperatures should range from the mid 50s to the lower 60s.
1012 PM EST Sun Nov 13 2016 Low pressure will remain near the Georgia and South Carolina coasts through tonight. The low will begin to lift northeast of the area Monday.
In the upper levels, broad ridging extends over Cuba and southern Florida. A zonal jet flow continues to extend over the Florida peninsula while an upper low moves through Georgia and the Carolinas. On the surface, weak high pressure will maintain control of the weather over the area with continued dry conditions and seasonal temperatures through the next couple of days.
Meanwhile a large upper level low encompasses the Gulf of Alaska with weak ridging over the Rockies into northern Alaska. This afternoon and tonight an area of lower clouds will move south with the cooler air behind the front and linger across the north and east. There should be enough wind to mix the air and cloud cover to hold temperatures up in the mid 30s most areas but lowered mins to lower 30s southwest where past few nights it has gotten cooler than expected. Monday should be the warmest day of the upcoming work week with highs in the lower 60s southwest and 50s elsewhere.
A weak cold front will move across the TAF sites tomorrow morning swinging the wind to the north through the day Monday. Otherwise weak cold front is on schedule to begin its push through our CWA later tonight and then stall across the southern Rolling Plains by early Monday morning. Mondays highs should be similar to today despite shift to northerly surface winds behind the weak cold front due to height rises associated with upper level ridging working it way toward West Texas from our west. Relatively small changes were needed once again through mid week as a stout progressive upper level high pressure ridge passes through the area. Temperatures will climb 10 to 15 degrees warmer than normal.
Fog expected ahead of a cold front that will pass over region late tonight/early Monday morning. Guidance indicates the highest probability for IFR/LIFR fog will be over southwest Oklahoma in the 10-13Z time frame.
many will top out in the lower 70s just before sunrise. A warmer day to start out the work week as mid levels warm into the lower 50s and weak surface winds come out the southwest under partially cloudy skies. Upper ridging building in from the southwest.
Lows overnight should range from the lower 30s in southeast IL where clouds arrive later, to the lower 40s nw of the IL river. inducing large-scale upper ridging downstream over the Midwest.
a closed low is moving along the Kansas/Oklahoma border toward southern Missouri. This low will spread a band of mid and high clouds over the area this evening and tonight. Any cloud cover from the upper level systems will also help surface insulation to keep us warmer. Should see lows about 10 degrees warmer on average Monday morning. Southerly flow will continue on Monday ahead of a weak cold front. Followed MOS pretty closely with highs in the low to mid 60s. Carney A weak cold front moves thru the southeastern half of the forecast area on Monday evening and model guidance continues to suggest marginal levels of moisture and lift to support some mention of pcpn.
919 PM EST Sun Nov 13 2016 High pressure and a dry airmass will remain in place across the region through the first part of the week as temperatures remain slightly above normal. For Monday, increasing gradient ahead of trough to push through the region will yield increasing clouds and warm air advection in the southerly flow. Period begins with a weak H5 ridge over the area. Think that the low levels will be dry enough that any virga won't reach the ground. Lows will be close to normal ranging from the lower 30s east of Columbus to the upper 30s along the OH/IN border.
643 PM EST Sun Nov 13 2016 An upper level low approaching from the west will cross the Carolinas tonight and Monday, while an area of low pressure moves up the Carolina coast.
A weak cold front will slowly move the area on Monday, approaching the Interstate 10 corridor by late afternoon or early evening. Just how widespread the low clouds will be is always difficult on the first night, but have increased cloud cover to mostly cloudy for late tonight and early Monday morning. For Monday, low level winds will swing a little more southwest and west during the morning, in response to a weak cold front approaching. This will both drive the low clouds away and boost afternoon temperatures. The front is weak, more of a wind shift than anything else, with afternoon highs still in the low to mid 70s across the area.
/Issued 334 PM CST Sun Nov 13 2016/ With the upper level low moving off to the east, temps have risen 10 degrees higher than yesterday. Winds have started turning northerly in the northwestern Panhandles as a weak cold front moves through. Winds will continue turning northerly for the remaining counties overnight but temps will remain above freezing. Ridging will begin building in tomorrow and lead to dry and warm conditions for the beginning of the work week. By midweek, a negatively tilted longwave trough approaches the Rockies. This will all depend on timing and if the stronger winds line up with the lower dewpoints.
We will then see a return to weak warm advection Monday on the backside of this ridge, with west/southwest flow enhancing mixing. With a trof moving through Monday night, surface temperatures will remain mild.
Two upper level low pressure areas are in relatively close proximity this afternoon with one centered over northern Oklahoma and the other centered over northern Georgia. A weak omega block between the two centered just east of the Mississippi River will shift east and dissipate through this evening with the two lows merging into a broad upper trough over the southeastern U.
20Z surface obs show some modest low level moisture advection with dewpoints warming into the lower 40s over northeast KS. But the quality of the moisture advection is not that impressive with dewpoints across north TX still in the lower 50s. A prefrontal trough was noted in the surface obs from northwest KS through the mid MO river valley. A little more mixing tonight is expected to keep lows in the lower 40s.
755 PM EST Sun Nov 13 2016 High pressure will result in another night with clear skies and cool temperatures by morning.
Strong sub-tropical jet just north of the area will continue to bring in high clouds while a broad area of low pressure moving north northeast off the South Carolina coast brings a swath of low clouds. Area of low pressure will move north northeast to along the North Carolina coast on Monday.
932 PM EST Sun Nov 13 2016 Canadian high pressure will persist over the region tonight. Low pressure will develop along the North Carolina coast Monday and pass by to our east Monday night.
Temperatures mush cooler than yesterday yielding a bit of a nip in the air. With clear skies overnight and winds nil to light, looking for good radiational cooling scenario setting up and temperatures generally dropping into the low to mid 40s north, the mid 40s to lower 50s across the southern portion of the forecast area.
This will bring in warmer temperatures than yesterday. Highs are expected to be in the low to mid 60s.