Aikyam-Lab/Synoptic-Bench huggingface dataset:
some MVFR CIGS may be seen behind the cold front moving across NRN AR this morning. very dry air will move into the state this Thu as a new cold front drops SE into the state starting this morning. a few deg warmer than expected this Thu.
607 AM EST Thu Dec 7 2017 High pressure will build south of the region today and remain to our south tonight into Friday.
A series of low pressure systems will track northeastward along the front.
The precip will be light, and accumulations will be an inch or two over the higher terrain while at lower elevations the ground may turn white, especially across N El Paso county. max temps today will be at freezing across the higher elevations of the plains (Palmer and Raton Mesa) while temps should reach about 40F along the lower ark rvr valley areas of the plains. Gusty north to northwest winds of 15 to 25 mph with gusts to 35 mph will be possible and this will keep temps feeling like the 20s across the lower elevations. \/Hodanish Other than gusty winds as well as elevated fire weather concerns at times, anticipate that generally drier and warmer meteorological conditions should be experienced over the forecast district during the longer term.
Today we continue to focus on saturation of the dendritic growth region as a well defined shrtwv trof in the nw flow that is well south of the 4-Corners while a strong upper jet moving into northern MX will be positioned such that the lift in the left front exit region of said jet will be additive to lift from shrtwv trof to the north. Friday morning will likely be the coldest morning of season with most all areas expected to have a hard freeze including the Lower Trans Pecos, Presidio Valley, and much of Brewster Co.
204 AM PST Thu Dec 7 2017 A persistent high pressure ridge will bring dry conditions with valley inversions, cold nights, light winds, and periods of reduced air quality for northeast California and western Nevada valleys through at least mid-December. Sierra crest ridge winds are still gusting around 50 mph while on Lake Tahoe, buoys are reporting sustained 15-20 mph with gusts to 25 mph. These winds are projected to subside as the upper ridge axis edges closer to the Sierra, but we ramped speeds down a bit more slowly through today based on the current conditions and continued east flow (although weaker) over the region.
with temperatures this morning in the low teens and single digits. very cold air in the wake of yesterdays cold front will likely result in most locations struggling to even reach the freezing mark this afternoon. clouds are expected to linger across the region which should help provide a bit of insulation for warmer overnight temperatures across the region. with most locations remaining in the lower 20s and upper teens tonight.
515 AM CST Thu Dec 7 2017 Trough east/ridge west pattern continues (and will for a long time). Subjective 00Z upper-air analysis indicates broad upper-level trough centered on the Great Lakes but spanning the Great Basin to New England. Upper-level ridge was centered along the Pacific coast, and upper-level jet was strongest in advance of the trough, from the mid-Atlantic toward New England.
355 AM MST Thu Dec 7 2017 Upper level analysis shows low pressure over southern Hudson Bay, with large trough covering a good portion of the US. A ridge lies along the west coast with strong northwest flow remaining over the Northern Plains. Upper ridge will begin to shift east today as warmer air slowly returns to the area.
/Issued 356 AM CST Thu Dec 7 2017/ Cold front is just clearing the forecast area with a few mid level clouds and brief snow flurries marking the advance of the attendant mid level trough.
918 AM EST Thu Dec 7 2017 Cloudy and dreary day will continue today with cold front south of the area and overrunning conditions (shallow north winds with southwest winds aloft) expected. Highs compared today in northeast FL about 25 degrees cooler than yesterday.
A large upper level ridge remains on/near the PacNW coast through the short term. The ridge axis will drift slightly east Friday, strengthening the surface inversion already in place. We expect the lower Treasure Valley will be the first to see stratus/fog, and that it will expand from there.
We are seeing only recoveries into the lower 30 percent range attm and some of our higher elevation wind sites are gusting to 35 mph. High pressure will remain over the region for the next several days.
but high pressure will remain in control for the foreseeable future.
1027 AM EST Thu Dec 7 2017 A cold front is moving through North-Central Florida, and an upper level trough is swinging through the Central US, pushing a secondary cold front through the heart of the country. After 00z this evening, cloud cover will be on the increase as the cold front approaches from the North.
Latest water vapor imagery depicts a highly amplified pattern with an upper level ridge extending from the West Coast into the Yukon and Northwest Territories. Meanwhile, a deep upper level trough extends across much of the central and eastern CONUS. Sharp ridge continues along the west coast with a deep trough from the Hudson Bay closed low across the Great Lakes and central plains into the Desert Southwest. Ridge will continue to build east with warmer temperatures moving into western Nebraska.
Temperature trends were a bit cooler than forecast across my southwest and have adjusted sky/temps through 18Z with latest CONSSHORT that has a decent handle on aforementioned forecast elements. H850 temps should increase about 10 deg over eastern ND while remaining significantly cooler over the far east.
332 AM MST Thu Dec 7 2017 Upper level analysis shows low pressure over southern Hudson Bay, with large trough covering a good portion of the US. A ridge lies along the west coast with strong northwest flow remaining over the Northern Plains. Upper ridge will begin to shift east today as warmer air slowly returns to the area.
The mid-level trough axis has swung through the area with increasing subsidence helping to dry the column and gradually put an end to the light snow and flurries. Satellite imagery/obs indicated some clearing early this morning to the west in Minnesota and would expect some of this clearing to continue to work eastward through the morning, although we may see some mid/high clouds through the day as a secondary trough axis rotates through. Right now consensus places the highest chances along and east of the Mississippi, centered on Friday evening. The weekend itself is shaping up to be quiet as high pressure builds in behind the departing upper wave.
Temperatures are still above freezing across the area and roads remain clear. Upper air analysis last evening showed a broad trough across most of the country. The trough axis extended from Minnesota to southern California. The 00Z DRT sounding showed the temperature dipping slightly below 0C at around 3800 ft and then warmer again up to near 8700 ft with winds in this layer from the southeast. Precipitation should become all rain during the afternoon with some daytime warming of the low levels. Tonight the upper level trough axis will swing through Central Texas pushing the precipitation southward. Friday morning will bring freezing temperatures across nearly all of the CWA. Only southern Frio and most of Dimmit will be above freezing.
Similar scenario to Thursday with the low stratus deck and decent CAA developing causing the flurries. Temperatures today, leaned towards the cooler side of guidance.
800AM UPDATE: Changes to the forecast this morning were first focused on warmer hourly temps as the chinook has raised temperatures across the western zones by reaching the inversion and chewing through it over Phillips and Petroleum County. GAH PREVIOUS SHORT TERM DISCUSSION: An upper ridge along the Pacific Coast will expend east into Montana today and Friday. This will push a frontal boundary currently over Eastern Montana to the east this morning and bring warmer air mass into the forecast area today. There will be some mid and high clouds overtopping the ridge that will move through the area at times today and tonight. A large upper level ridge will remain over the Pacific Coast during the entire period. There will be a deep upper trough to the east with Montana in varying degrees of NW flow aloft.
1000 AM EST Thu Dec 7 2017 High pressure will build south of the region today and remain to our south tonight into Friday.
There is some subtle surface ridging over the Northern Plains this morning, which should keep much of the region dry through this morning. However, precipitation amounts should be limited as the moisture profile looks fairly dry in the low-levels. Lows tonight dip into the single digits above zero north to the lower teens to the south. Temperatures Friday will once again remain cold, but temps slightly warming up, with highs in the teens north, to the lower to middle 20s south.
Will need to keep an eye on temps as wet bulbing is allowing sfc temps to approach the freezing level across La Salle county.
Temperatures responded by falling into the low to middle 20s, under clear skies and north breezes. For today look for highs to only make it into the low to mid 30s. Tonight will be the coldest night of the winter season, with lows falling into the low to middle teens. As we progress through the weekend, the area will remain under the inflection of a trough to the east, and a ridge to the west. Temperatures for the most part will be seasonal through the weekend with highs in the 40s and 50s, with lows below freezing each night.
556 AM CST Thu Dec 7 2017 Clouds are on their way out this morning as the trough slides southeast and ridging builds in. Low pressure will track from northwest MN to western or central WI Friday afternoon, to Lake Michigan by Friday night. The deep trough to the east and the anomalously large ridge to the west will maintain a northwest flow for the Upper Midwest.
this is a tough one as ground temps remain relatively warm, and surface temps in most areas will remain above freezing. At this time expecting less than 1 inch of snow, mainly in the grassy areas and on elevated surfaces, again due to surface temps remaining above freezing. The only issue with the roads could be in the mountains Friday afternoon where surface temps will be around freezing.
Will be watching a warm front move into the CWA later today, with temperatures rising into the 30s over the western CWA. Cooler 20s will continue over eastern areas. Mid-levels begin to dry out late while we stay saturated down low, so perhaps some freezing drizzle potential as well.
535 AM CST Thu Dec 7 2017 Temperatures held in the the 40s overnight as clouds helped to keep things a bit warmer. There will be a chance for black ice on some of the area bridges in central Louisiana around Alexandria and in the lakes region of Texas. Temperatures should be a bit to warmer down along the I-10 corridor. This will bring freezing temperatures into central Louisiana and around the lakes region for southeast Texas towards sunrise. the upper level trof will finally push the precip off to the south and east. Freezing temperatures to start out the morning hours across central Louisiana into the lakes region in Texas over the weekend. Temperatures down towards the coast will range from the lower 30s to mid 30s for morning lows.
523 AM CST Thu Dec 7 2017 A deep, positively tilted trough currently extends into the region this morning. The strong CAA associated with this trough will keep temperatures well below normal today. By this evening, the trough will transit to the east and mid and upper level ridging will replace it.
Persistent western ridge and eastern trough pattern will allow for several upper waves to drop southeast out of the Canadian Prairies and across the Ohio Valley. This and a reinforcing cold front should keep temperatures from budging much today per the Superblend.
Expect this to be the trend today as the high quickly reaches the southern plains. Most of the models agree that highs today will generally be around freezing for most locations. By tonight winds shift to the southwest as the high retreats southeastward, but should remain under 10 mph. By the end of the week, the strong mid-level trough will still be in place across the eastern U. Models continue to show this mid- level trough remaining anchored over the eastern U.
Dominant feature for most of the upcoming week will be an eastern CONUS upper trof, which will maintain cold and somewhat unsettled conditions across the Ohio Valley. Several impulses will dive out of Canada and swing through the base of this trof, bringing periodic chances for light precip mainly in the form of snow.
Scattered flurries will continue to diminish across the area next 1-2 hours as last vestiges of passing mid-level trof move off to the east. Few light snow showers and flurries will continue to affect the area through 12Z as last vestiges of mid-level short wave trof pass through the area. Expect decreasing cloud trend later this morning into the early afternoon due to weak short wave subsidence and influx of drier air in the low to mid levels. Backing low to mid level winds will allow slightly warmer air to return to the area later today and tonight. Today's partial sunshine will help the temperature rebound a few degrees into the low to mid 20s most areas, with wind chills in the single digits to low teens.
Today will be considerably warmer than yesterday with temperatures in the 20s and 30s. Tonight, clouds will clear from west to east, but despite clearing skies temperatures may have a hard time falling below the low 20s due to winds around 15 to 20 mph.
This cooling in the low levels has also pushed the wet bulb zero height from 13k feet last night down to 3300 feet this morning. Isentropic forcing of this warm and moist airmass over the cold and stable airmass in the low levels of the atmosphere will result in continued cloud cover and periods of light rain today.
541 AM CST Thu Dec 7 2017 A strong northerly upper level jet max will keep the low levels cold through the morning. By afternoon a weak ridge of high pressure will pass to the south and allow surface winds to back a bit more towards the west. This will aid in advecting warmer air in from the west, but an abundance of mid and high level cloud cover should limit any warming potential. Moisture in the lower levels as well as temperatures warming through the more favorable dendritic levels suggests that light snowfall and flurries are unlikely today. As this jet max drifts east the slightly warmer low level air will allow temperatures to climb towards normal on Friday.
/issued 249 AM CST Thu Dec 7 2017/ High clouds are moving across a large portion of the Mid-South early this morning with temperatures ranging from the upper 20s to the lower 40s. A cold front was located from southern Illinois through northwest Arkansas and into northwest Texas. High pressure will build into the region tonight resulting in a cold night with lows Friday morning from the upper teens to the upper 20s.
Today: High pressure centered in the central Plains will shift into the southern Plains, with weak ridging into the dvn cwa. Tonight: Weak ridge will push southeast of the area overnight. HAASE A strong upper short wave trof will pass near to just northeast of the area Friday and Friday night, and with that we will be close to a rather intense, but short lived forcing event. I feel confident that will be the case, as the low is unlikely to travel farther southwest of the upper wave.
A bit warmer today but blustery as a decent northerly breeze will exist.
A reinforcing cold front will also be moving into West Central Texas this morning and should keep our temperatures steady and possibly drop temperatures this afternoon a few degrees, continuing the light rain and snow today. Low temperatures Friday morning may drop into the low to mid 20s.
North winds will increase through today as a reinforcing cold front moves into the area.
Then, high pressure will lead to warming temperatures and lighter winds from Friday into next work week. Beginning Friday, strong high pressure will build across the western United States with a return of above normal temperatures by the weekend.
High pressure will remain over the region for the next several days.
702 AM EST Thu Dec 7 2017 Weak high pressure will gradually build into the region through Friday with generally fair weather expected for most of the area.
934 AM EST Thu Dec 7 2017 Snow showers and flurries will be possible today as an upper level disturbance and cold front traverse the region.
1259 AM EDT Sun Aug 20 2017 High pressure will build across the Ohio Valley and eastern Great Lakes tonight and Sunday.
Water vapor imagery shows upper trough swinging across the northeast CONUS with a southern stream impulse approaching southern NM. This will allow a strong cold front to start pushing south. By Tue evening the front south be south of our forecast area with much cooler and drier air spilling into KS. By Wed afternoon, deep upper trough will stretch from Quebec into the northeast CONUS with nw flow aloft over the Plains. Highs Tue-Fri look to be around 10 degrees below average as they top out in the low to mid 80s.
Morning lows will be in the low to mid 70s, upper 70s along the immediate coastline.
737 PM EDT Sat Aug 19 2017 High pressure will build across the Ohio Valley and eastern Great Lakes tonight and Sunday.
624 PM CDT Sat Aug 19 2017 156 PM CDT Dry, quiet weather expected to finish the weekend, with warmer and slightly more humid conditions for Sunday. High pressure was drifting east across the forecast area this afternoon, with sunny skies and light winds making for pleasant weather. Light winds will turn southeasterly tonight as the high drifts off to the east, with clear skies and light flow allowing for the development of some patchy shallow ground fog in a few spots by sunrise Sunday morning. Ratzer 156 PM CDT Warm and somewhat humid conditions will be in place through the first couple days of the upcoming week, with drier and cooler conditions arriving for the latter half of the week.
Chattanooga Airport, TN 68 93 71 92 / 0 10 10 10 Knoxville McGhee Tyson Airport, TN 68 91 69 89 / 0 10 10 10 Oak Ridge, TN 68 91 70 90 / 0 0 10 10 Tri Cities Airport, TN 62 90 64 88 / 0 10 10 10.
/Issued 418 PM CDT Sat Aug 19 2017/ Current upper level analysis reveals high pressure centered over south Texas helping to shift some monsoonal moisture into the far western Panhandles.
The greatest coverage of thunderstorms should occur east to south of Tucson, but the lower deserts won't be completely left out. With moisture increasing overnight, inverted troughing aloft nearby across NE Sonora and and any residual outflows, we can't rule out a few showers or even a thunderstorm overnight mainly east of Tucson. An average chance of storms to start the week with a general southerly flow open to whatever cares to wrap around the high.
707 PM EDT Sat Aug 19 2017 High pressure will bring VFR conditions throughout the forecast period even as it splits off to the east during the day Sunday. Light/variable winds will become southwest under 10 knots on the backside of this high by mid/late morning with just a few diurnal cumulus possible within a rather dry airmass. Upper level trough axis/cold pool (-15 C at 500 MB per APX sounding) pushing east of the Central Great Lakes this afternoon. Southwest return flow around the high tomorrow to allow temps to push into the mid 80s based off 850 MB temps reaching around 16 C.
804 PM EDT Sat Aug 19 2017 High pressure will provide fair weather into tonight and Sunday, with lows near 60 degrees tonight and highs in the 80s tomorrow.
709 PM EDT Sat Aug 19 2017 Thunderstorms will accompany the passage of a cold front this evening. Building high pressure in the wake of the aforementioned system will result in a dry and seasonable Sunday with slightly lower dewpoints/humidity.
906 PM EDT Sat Aug 19 2017 High pressure will build across the Ohio Valley and eastern Great Lakes tonight and Sunday.
1131 PM CDT Sat Aug 19 2017 Issued a short fused heat advisory for the western cwfa with mid/upper 70s dewpoints with temperatures reaching the low 90s.
943 PM CDT Sat Aug 19 2017 High pressure over the Midwest will slide off the southeast this evening as southerly winds increase ahead of a weak frontal boundary over the Dakotas. Models were suggesting some sort of weak short wave/convection developing to the southwest after midnight in response to the low level jet, but backed off, which makes sense at this point in time. In the big picture, the upper pattern will transition from slight troughing over the north central CONUS at the start of the period to northwest flow into midweek before we see ridging build over the center of the continent toward the end of the upcoming week.
701 PM CDT Sat Aug 19 2017 High pressure over the Midwest will slide off the southeast this evening as southerly winds increase ahead of a weak frontal boundary over the Dakotas. Models were suggesting some sort of weak short wave/convection developing to the southwest after midnight in response to the low level jet, but backed off, which makes sense at this point in time. In the big picture, the upper pattern will transition from slight troughing over the north central CONUS at the start of the period to northwest flow into midweek before we see ridging build over the center of the continent toward the end of the upcoming week.
/issued 424 PM CDT Sat Aug 19 2017/ High pressure aloft will remain over the Four State Region as the center of the system moves into Texas and will allow daytime temperatures to climb in to the middle to upper nineties through the rest of the weekend and into the start of the work week.
1032 PM EDT Sat Aug 19 2017 Currently - A low level trough is working its way westward across the area, while the eastern periphery of a large TUTT cell move westwards through the southeastern Gulf of Mexico. Short Term Update - The TUTT cell and broad lower level trough will continue to work its way westward across the Florida Keys tonight into tomorrow. Winds will generally be light out of the east due to a low level trough moving westward across the broader area.
Upper level low pressure trough axis off to our northwest will continue to slide east across the northern part of our region through Sunday afternoon. At the surface, a cold front/trough axis across western South Dakota late this afternoon will push east through the night bringing winds around to the northeast. Otherwise, it will be cooler with highs in the upper 70s to the lower 80s for Sunday afternoon highs.
1246 AM EDT Sun Aug 20 2017 High pressure will bring VFR conditions throughout the forecast period even as it splits off to the east during the day. Light/variable winds will become southwest under 10 knots on the backside of this high by mid/late morning with just a few diurnal cumulus possible within a rather dry airmass. Upper level trough axis/cold pool (-15 C at 500 MB per APX sounding) pushing east of the Central Great Lakes this afternoon. Southwest return flow around the high tomorrow to allow temps to push into the mid 80s based off 850 MB temps reaching around 16 C.
A weak and dry cold front will continue to progress across Montana this evening.
1056 PM CDT Sat Aug 19 2017 After some morning fog, an absolutely beautiful Saturday afternoon across the area with high pressure in control across the Upper Mississippi River Valley Region. The area of high pressure will drift slowly east overnight as a mid- level trough and surface cold front pushes in across the Northern Plains into MN. The mid-level trough/surface cold front will continue to push east into northwest portions of the forecast area Sunday.
443 PM PDT Sat Aug 19 2017 Expect normal to below normal temperatures and persistent coastal marine layer for the period due to a nearly stationary low pressure center offshore.