Aikyam-Lab/Synoptic-Bench huggingface dataset:
(Today) Early this morning an upper level trof axis was making its way across the region with scattered/broken high level clouds spreading across Eastern Oklahoma and Northwest Arkansas.
Cooler high temperatures this weekend but remaining above normal. Both Euro/GFS ensembles has PW values along the border running 175-200% of normal and with a weak disturbance possibly moving north out of Sonora MX on eastern flank of upper low near Baja Spur I went ahead and introduced sprinkles along the border from San Miguel to the Huachuca Mtns.
Will continue the High Wind Warning for southwest Phillips county and while some ridge top winds may approach warning criteria through the remainder of Phillips and Petroleum county, based off winds speeds with current level of mixing, not enough confidence to expand the warning. Temperatures will swing downward for the end of the week as a stronger cold front pushes through the area late Thursday.
A broad ridge of high pressure over the southwest U. While there will certainly be a chance for rain in the valleys, a lack of dynamics for vertical motion will keep most of the precipitation in the higher terrain where the topography can do the lifting. The higher terrain will be most vulnerable, where westerly gusts of 40 to 50 mph will be commonplace, and gusts exceeding 50 mph will be possible along the Continental Divide in Glacier Park.
(Today and tonight) Weak ridging aloft will continue to build over the area today, resulting in continued benign weather over the area through tonight. Temperatures today are expected to reach into the low to mid 70s, which is about ten degrees above normal for this time of year.
Feeling the Warmth Today through Thursday: A strong upper level ridge will nudge it's way out of the Rockies today, inducing subsidence, and sending 850 mb temperatures on an upward trajectory (reaching 14 to 16 C above average by Thursday). This would place today's highs in the upper 60s, give us lows in the mid 40s tonight (warmer than average highs this time of year) and highs in the lower 70's Thursday afternoon.
As of 9Z, a warm front is currently pushing across the CWA with winds shifting to a westerly direction. Based on 925 mb temps off the GFS, along with favorable mixing winds, highs should easily warm into the upper 50s, to the lower 70s. A cold front will slowly sink southward from North Dakota later tonight, bringing the potential for a narrow band of light rain to northeastern SD and western MN. The first of two semi-transient low pressure systems is progged for the middle of the weekend, albeit model/NBM trends in the past 24 hours in qpf/highest PoPs placement is a bit further north now, primarily across the cwa's north of this CWA.
356 AM CST Wed Dec 1 2021 As of 9Z, a warm front is currently pushing across the CWA with winds shifting to a westerly direction. Based on 925 mb temps off the GFS, along with favorable mixing winds, highs should easily warm into the upper 50s, to the lower 70s. A cold front will slowly sink southward from North Dakota later tonight, bringing the potential for a narrow band of light rain to northeastern SD and western MN. The first of two semi-transient low pressure systems is progged for the middle of the weekend, albeit model/NBM trends in the past 24 hours in qpf/highest PoPs placement is a bit further north now, primarily across the cwa's north of this CWA.
High pressure will bring dry conditions with temperatures about 10 to 15 degrees warmer than normal through the remainder of the work week. Over the weekend, dry weather with slightly cooler, but above average daytime temperatures, is forecast. High pressure over the Great Basin and northern Arizona, along with a cutoff low over central Baja, continues the trend of easterly winds over the Southwest. Daytime temperatures will cool a degree or two each day through the end of this week and into the weekend as a result of the high breaking down.
Progged temps look to be even higher than today with values getting to the low 70s for much of the area.
528 AM CST Wed Dec 1 2021 (Today) Early this morning an upper level trof axis was making its way across the region with scattered/broken high level clouds spreading across Eastern Oklahoma and Northwest Arkansas.
Latest metars show temperatures ranging from the lower 30s across central Wisconsin to the upper 30s across southeast Minnesota/northeast Iowa. warmer air aloft advects into the forecast area and will allow precipitation to change over to all rain and precipitation should exit the eastern forecast area by 15z Today. A weak cold front moves across the region tonight and slightly cooler airmass filters into the forecast area Thursday with high temperatures mainly in the lower 40s to lower 50s.
Surface wind speeds will increase a bit more today with warmer temperatures, thanks in big part to the warming 800-850 mb temps. I have increased temps in our west/southwest a couple degrees warmer than guidance/previous forecast and a few degrees above NBM. Our east may be a bit more sluggish to get much more past the mid 60s with 850 mb temps a couple degrees cooler. As a cold front approaches from the north, we will almost surely have a record-warm day. We finally do get some cooler air to settle in for the weekend.
Tonight will see a persistent forecast with lows in the lower to middle 50s and with another chance of patchy to areas of fog by morning for the southeastern areas.
High pressure and dry weather return Thursday along with above average temperatures through the end of the week. A few pockets of freezing rain may occur at the leading edge, before temperatures rise above freezing. No effects to travel are expected due to surface being above freezing. The Ohio Valley remains sandwiched between a strong low in southeastern Canada and high pressure over the Gulf Coast on Thursday. Under a northwest flow pattern aloft, a cold front will push south across the forecast area Thursday night. Lows will range from the lower 30s north to the lower 40s south.
709 AM EST Wed Dec 1 2021 Rain chances return late today with a crossing warm front.
With the ridge strengthening again temperatures will be warmer today, especially across Johnson County where highs will be around 70F.
High pressure remains over the Tennessee Valley this morning. The feature of interest for today will be an upper-level trough moving in from the northwest. The ECMWF has surprised us this morning with a much more bullish trough today, bringing a chance for a few showers this afternoon/evening. Once this trough moves off to the east, warm-air advection really kicks up as the High over the Southeast builds back up, re- establishing itself over the region.
237 AM MST Wed Dec 1 2021 Water vapor shows short wave trof over the Upper Midwest embedded in the mean west/northwest flow, with upper high over the southwest CONUS. At the surface, broad trof covers the Northern Plains. With thermal ridge overhead, temps both today and Thursday will be near records, aided in part by downslope low level flow. There is some question as to how warm Thursday will be, dependent on how far south a backdoor cold front will sink.
High clouds continue to spread across the extreme N portion of the area on the N periphery of a pencil thin 588 dekameter upper ridge extending from the four corners area to our coastal waters.
As a result, it should be a noticeably warmer day with highs in the upper 60s to mid 70s with mostly sunny skies.
Even warmer air is on tap for Thursday when highs are expected to reach well into the 60s. Decent pressure gradient overnight will keep the boundary layer well mixed in southwest winds, so lows well above normal in the low to mid 40s - more typical of early December highs. 850 mb temps peak at +10-12C on Thursday, making for an unseasonably warm day in the low to mid 60s.
Despite surface winds initially out of the east early this morning, winds just off the surface have already turned to the south, and as soon as the nocturnal inversion breaks, there should be an uptick in surface dewpoints from the south as the lower trop moistens up just ahead of this feature. A dry cold frontal passage is forecast Fri night.
High pressure southeast of the Ohio Valley will continue to pull away from the area this morning. The highest chance for widespread rainfall is between the Ohio River and I-70. The Ohio Valley remains sandwiched between a strong low in southeastern Canada and high pressure over the Gulf Coast on Thursday. Under a northwest flow pattern aloft, a cold front will push south across the forecast area Thursday night. Lows will range from the lower 30s north to the lower 40s south.
526 AM CST Wed Dec 1 2021 (Today and tonight) Weak ridging aloft will continue to build over the area today, resulting in continued benign weather over the area through tonight. Temperatures today are expected to reach into the low to mid 70s, which is about ten degrees above normal for this time of year.
A warm start to December as mid-level ridging situated over Deep South Texas stays in place for Wednesday and Thursday keeping an abundance of moisture and WAA over the CWA. Temperatures and dewpoints steadily increase over the short term period giving us above normal highs in the lower 80s and lows in the upper 50s and lower 60s. Dewpoints will be in the lower 60s for Wednesday and increase to the upper 60s for Thursday.
530 AM EST Wed Dec 1 2021 Rain chances return late today with a crossing warm front.
The weak cold front will continue to move south today with high temperatures today expected to be a few degrees cooler than yesterday. Downslope component to low- level flow will allow temperatures in the north to be warmer than yesterday's post-frontal temperatures.
Most precipitation will be falling over the higher elevations, so terrain will remain obscured today and Thursday over the Glacier Park region and the Cabinet Range. A broad ridge of high pressure over the southwest U. While there will certainly be a chance for rain in the valleys, a lack of dynamics for vertical motion will keep most of the precipitation in the higher terrain where the topography can do the lifting. The higher terrain will be most vulnerable, where westerly gusts of 40 to 50 mph will be commonplace, and gusts exceeding 50 mph will be possible along the Continental Divide in Glacier Park.
341 AM MST Wed Dec 1 2021 High pressure is expected to remain in place across the region into this weekend, with little change in day to day weather expected.
This will make Thursday a much cooler day, but still quite mild for early December. Highs will average from around freezing in Baudette to around 45-46 in Lisbon, ND.
Use extra caution while driving! High pressure will remain over the area today into Thursday, with maximum daytime temperatures in the upper 70s to low 80s both days.
414 AM MST Wed Dec 1 2021 Low temperatures so far today have been running a few degrees warmer than yesterday, as expected. Looking at today, the area of high pressure that has been situated just to the west will shift slightly eastward as several disturbances move onshore of the Pacific Northwest coast. This will have little impact on our sensible weather though, as conditions will remain warmer than average and overall dry. An elongated lobe of high pressure will sustain its position aloft, maintaining consistent weather into the weekend, with little fluctuation in high/low temperatures expected.
925 AM EST Wed Dec 1 2021 12z surface analysis shows 1024 hPa high pressure centered over the tri-state area. This is reflected well in the 12z TAE Sounding with an 8C radiation inversion near the surface! Low temps bottomed out in the lower to middle 30s away from the coast this morning. There will be quite a diurnal range today with temperatures rebounding to highs in the lower 70s. Cool and dry high pressure will slide eastward off the east coast in response to an upper trough which will swing by tonight. Some high clouds are expected ahead of the trough but for the most part skies will be mostly sunny.
430 AM MST Wed Dec 1 2021 Water vapor shows short wave trof over the Upper Midwest embedded in the mean west/northwest flow, with upper high over the southwest CONUS. At the surface, broad trof covers the Northern Plains. With thermal ridge overhead, temps both today and Thursday will be near records, aided in part by downslope low level flow. There is some question as to how warm Thursday will be, dependent on how far south a backdoor cold front will sink.
356 AM MST Wed Dec 1 2021 The short term focus is on the near-record and record high temperatures forecast to be in the lower to middle 70s across the area today and Thursday. Northwest flow aloft flattens Thursday and Thursday night with a lee trough deepening along the Front Range in response to the more westerly flow streaming across the Rockies.
The quiet weather is expected to continue over northern and central Nevada as strong high pressure remains over the area.
445 AM MST Wed Dec 1 2021 The short term focus is on the near-record and record high temperatures forecast to be in the lower to middle 70s across the area today and Thursday. Northwest flow aloft flattens Thursday and Thursday night with a lee trough deepening along the Front Range in response to the more westerly flow streaming across the Rockies.
With minimal cold air advection behind the system, expect temperatures to rebound today into the lower to middle 60s.
A bit warmer morning across the area today with current readings in the mid 30s to low 40s.
High pressure will remain over California this week.
This morning, radar shows snow and light freezing rain making its way to the eastern portion of the CWA and will eventually exit later this morning.
/issued 359 AM CST Wed Dec 1 2021/ Benign and warm weather will dominate today with high temperatures ranging 15 to 20 degrees warmer than normal. Weak northwest flow aloft will translate east of the area with a narrow but effective upper level high pressure moving overhead later today and tonight. High pressure remains in place across the Caribbean Sea with a ridge extending through Texas into northern California.
359 AM CST Wed Dec 1 2021 Benign and warm weather will dominate today with high temperatures ranging 15 to 20 degrees warmer than normal. Weak northwest flow aloft will translate east of the area with a narrow but effective upper level high pressure moving overhead later today and tonight. High pressure remains in place across the Caribbean Sea with a ridge extending through Texas into northern California.
541 AM CST Wed Dec 1 2021 Anomalous ridging with downslope flow will usher in well above average temperatures during the short term period.
213 AM MST Wed Dec 1 2021 Low temperatures so far today have been running a few degrees warmer than yesterday, as expected. Looking at today, the area of high pressure that has been situated just to the west will shift slightly eastward as several disturbances move onshore of the Pacific Northwest coast. This will have little impact on our sensible weather though, as conditions will remain warmer than average and overall dry. An elongated lobe of high pressure will sustain its position aloft, maintaining consistent weather into the weekend, with little fluctuation in high/low temperatures expected.
Upper-level pattern this afternoon continues to feature a nearly stationary closed low near the Baja California region. Dry conditions are expected to continue into the day Thursday as upper ridging begins to build over the area.
This will have to be monitored closely due to the low confidence of the forecast; there is certainly the possibility for another round of storms a little later this afternoon/evening.
/ISSUED 255 AM CDT WED APR 27 2016/ WX MAP SHOWS HIGH PRESSURE TO THE EAST WITH LOW PRESSURE ACROSS THE PLAINS. WITH DEWPTS IN THE LOWER 70S. DML THE COMBINATION OF HIGH PRESSURE CENTERED OVER THE ATLANTIC OFF THE CAROLINA COAST AND A SERIES OF LOW PRESSURE SYSTEMS DEVELOPING OVER THE PLAINS STATES WILL MAINTAIN AN ONSHORE FLOW OVER THE COASTAL WATERS THROUGH THE PERIOD.
WITH AMPLE SUNSHINE AND DEWPOINTS IN THE LOWER 60S.
AN AREA OF LOW PRESSURE WILL MOVE ACROSS THE REGION ON THURSDAY AND A COLD FRONT WILL MOVE IN THURSDAY INTO THURSDAY NIGHT. TEMPERATURES TODAY WILL BE TOUGH DEPENDING ON HOW FAST/IF WE ARE ABLE TO SCATTERED OUT THE LOWER CLOUDS. PRECIPITATION WILL BECOME MORE WIDESPREAD TONIGHT AS THE FRONTAL BOUNDARY PUSHES NORTHWARD AND AN AREA OF LOW PRESSURE MOVES THROUGH. AN AREA OF LOW PRESSURE WILL MOVE ACROSS THE REGION AND A COLD FRONT WILL WORK INTO THE AREA THURSDAY INTO THURSDAY NIGHT.
/TONIGHT/ LINE OF SURFACE-BASED CONVECTION HAS INITIATED IN THE WARM SECTOR OVER THE LAST ONE TO TWO HOURS AHEAD OF STACKED UPPER LEVEL LOW OVER EASTERN NEBRASKA. WARM FRONT IS LIFTING NORTH OUT OF MO AND INTO SOUTHERN/SW IOWA WITH 15 TO 20 KT EASTERLY FLOW AHEAD OF THE BOUNDARY. BIGGEST CONCERN WILL BE TORNADOES IN AND NEAR THE WARM FRONT.
SIMILAR TRENDS ARE EXPECTED EXCEPT THERE IS A CHANCE OF MVFR VSBY EARLY THURSDAY MORNING AS WINDS STAY LIGHT AND MOISTURE BEGINS TO INCREASE AS A WARM FRONT APPROACHES. SKIES WILL CLEAR FROM WEST TO EAST THROUGH LATE MORNING AS THE UPPER LEVEL LOW CURRENTLY OVER WESTERN KANSAS MOVES EASTWARD. AHEAD OF THIS LOW.
BUT HAVE STAYED COOLER THAN MOST MODEL GUIDANCE AND MIXING OF H850 TEMPS WOULD SUGGEST DUE TO SOMEWHAT SATURATED GROUNDS.
305 PM EDT WED APR 27 2016 QUIET AND SEASONABLY COOL WEATHER CONTINUES AS A DECAYING MID-LEVEL LOW MEANDERS FROM THE CENTRAL PLAINS TO THE MID MS VALLEY AND HIGH PRESSURE SITS OVER NORTHERN MANITOBA AND FAR NW ONTARIO. THERE WL BE TWO LO PRES DISTURBANCES OF NOTE PASSING THRU THE OH RIVER VALLEY/NEAR THE LOWER LKS DURING THIS TIME ASSOCIATED WITH DISTURBANCES MOVING E THRU AN ACTIVE SRN BRANCH FLOW OVER THE SRN CONUS. AND CONFLUENT NW FLOW ALOFT NEAR THE UPR LKS BTWN PERSISTENT DEEP TROF OVER QUEBEC AND THE SRN BRANCH FLOW E OF TROFFING LINGERING OVER THE SW CONUS FAVOR A PCPN FREE FCST. LAKE SUPERIOR WILL REMAIN BETWEEN HIGH PRESSURE OVER SOUTH CENTRAL CANADA AND A SERIES OF LOW PRESSURE SYSTEMS DRIFTING EASTWARD ACROSS THE MID MS VALLEY AND FAR SOUTHERN GREAT LAKES THROUGH THE WEEKEND.
223 PM EDT WED APR 27 2016 HIGH PRESSURE WILL BRING A MAINLY DRY OVERNIGHT.
344 PM CDT WED APR 27 2016 Will be monitoring the potential for isolated storm development into early this evening across central Missouri and the eastern Ozarks a cold front pushes east across the region. A few storms could brush by central Missouri in closer proximity to the upper low.
TODAY THROUGH THURSDAY NIGHT UPPER LEVEL ANALYSIS HAS STRONG CLOSED LOW ACROSS WESTERN KANSAS WITH LARGE PLUME OF CLOUD COVER AND MOISTURE LIFTING NORTH ACROSS CENTRAL SOUTH DAKOTA. LOW PRESSURE IS LOCATED ACROSS NORTH CENTRAL KANSAS WITH HIGH PRESSURE OVER SOUTHERN CANADA. UPPER LEVEL LOW LIFTS NORTHEAST INTO EASTERN NEBRASKA THIS AFTERNOON. AND ALSO ACROSS THE BLACK HILLS WHERE COOLER TEMPERATURES ARE IN PLACE. UPPER LOW SHIFT INTO IOWA TONIGHT. ANOTHER 1 TO 2 INCHES OF SNOWFALL WILL BE POSSIBLE ACROSS THE HIGHER ELEVATIONS OF THE BLACK HILLS. UPPER LOW WILL WEAKEN AND SHIFT EAST. WITH WEAK RIDGING MOVING ACROSS THE CENTRAL PLAINS. HIGH TEMPERATURES WILL BE A LITTLE WARMER. THE NEXT UPPER LOW WILL APPROACH THE AREA THURSDAY NIGHT.
Water vapor imagery shows the upper low positioned across southwest Kansas as of Wednesday morning.
359 PM EDT WED APR 27 2016 HIGH PRESSURE WILL BRING A MAINLY DRY OVERNIGHT.
UPPER LOW TO DRIFT ACROSS THE CENTRAL PLAINS TODAY WITH RIDGING THROUGH THE NE HALF OF THE FA. ESPECIALLY THE HIGH RESOLUTION MODELS KEEP MOST IF NOT ALL RAIN POTENTIAL SOUTH AND WEST OF THE FORECAST AREA. WITH DRY/COOL COLUMN TEMPERATURES WILL DROP OFF INTO THE 30S AND COULD SEE SOME AREAS DIPPING BRIEFLY BLO FREEZING. LATER PART OF THE WORK WEEK LOOKS QUIET WITH HIGH PRESSURE IN PLACE.
AND ONLY INTO THE LOWER 50S INLAND. STIFF NORTHEAST WINDS WILL CONTINUE TO ADVECT DRY AIR INTO THE LOW LEVELS WHICH COMBINED WITH THE VERY SLOW MOVEMENT OF THE APPROACHING UPPER LOW WILL LIKELY KEEP MOST OF THE AREA DRY THROUGH EARLY TO MID AFTERNOON. UPPER LOW SHOULD MOVE ACROSS THE CWA THURSDAY AND SHOULD BE ENOUGH TO SUPPORT ISOLD TO SCTD SHOWERS EVEN THOUGH IT WILL BE WEAKENING QUICKLY.
PRECIPITATION WILL PERSIST OVER THE REGION TONIGHT AS THE LOW PRESSURE CONTINUES TO MOVE ACROSS THE CENTRAL PLAINS. THE LOW WILL SHIFT EAST THROUGH THE DAY SO LOOK FOR DECREASING AREAL COVERAGE OF PRECIPITATION.
On Thursday an upper low will dig into the southwestern United States as a surface boundary remains nearly stationary across the Texas Panhandle and Oklahoma. The chance for precipitation will then continue from Thursday night through the weekend as the upper low moves east from Central Rockies into the Central Plains.
AS A SURFACE WARM FRONT MOVES NORTH ACROSS THE ROLLING PLAINS DURING THE AFTERNOON AIDED BY PRESSURE FALLS TO OUR WEST.
NEGATIVE TILTED UPPER TROUGH RESPONSIBLE FOR WIDESPREAD SEVERE STORMS OVER PLAINS TO MISSISSIPPI RIVER VALLEY TUE AND TUE NIGHT WILL CONTRACT TO A MORE CLOSED OFF LOW VCNTY OF IOWA BY LATE WED NIGHT. VERY DRY AIRMASS IS TIED TO THIS HUDSON BAY HIGH PRESSURE.
139 PM MST WED APR 27 2016 ANOTHER AREA OF LOW PRESSURE WILL DIP INTO THE AREA TONIGHT INTO THURSDAY WITH MORE BREEZY CONDITIONS AND A SLIGHT CHANCE OF SHOWERS AND A FEW THUNDERSTORMS. MOST SIGNIFICANT OVER THE HIGHER TERRAIN NORTH AND EAST OF PHOENIX THURSDAY AFTERNOON.
LOW PRESSURE SYSTEM STILL OVER THE PLAINS WITH ITS TRAILING COLD FRONT MOVING EASTWARD TOWARD THE MISS RIVER. BUT THERE IS LITTLE IN THE WAY OF ORGANIZED LIFT IN THE AREA AND THE LOW LEVEL WINDS VEER AS LEE TROUGHING DEVELOPS IN THE CAROLINAS.
354 PM EDT WED APR 27 2016 HIGH PRESSURE WILL BRING A MAINLY DRY OVERNIGHT.
THE THINKING FOR THE MOST LIKELY SCENARIO CONTINUES TO BE ONE IN WHICH STORMS WILL FINALLY INITIATE ONCE THE SEABREEZES COLLIDE NEAR THE HIGHWAY 301 CORRIDOR LATE THIS AFTERNOON. STORMS SHOULD REMAIN MOSTLY LOW TOPPED GIVEN UPPER RIDGE IN PLACE SO NO SEVERE WEATHER IS ANTICIPATED TODAY.
HIGHS TODAY IN THE LOWER 40S TO LOWER 50S REPRESENT A BLEND OF THE RAP AND THE PREVIOUS FORECAST. LOWS TONIGHT MAY FALL BELOW FREEZING ACROSS NORTHERN NEB. H850MB TEMPERATURES FALL BELOW FREEZING TONIGHT ACROSS ALL OF WRN AND NCNTL NEB.
143 PM EDT WED APR 27 2016 HIGH PRESSURE BUILDING ACROSS THE EASTERN GREAT LAKES SHOULD BRING DRY WEATHER TO MOST LOCATIONS TODAY.
CANADIAN HIGH PRESSURE IN CONTROL THROUGH THE PERIOD, MAINTAINING DRY AND SEASONABLY COOL AIR MASS. MAY SEE A FEW CLOUDS LATE IN THE DAY NRN/NERN VT ON PERIPHERY OF UPPER LOW ACROSS ERN QUEBEC. UPPER LEVEL TROUGH KEEPS NW FLOW AND INFLUX OF COOLER AIR ACROSS THE NORTH COUNTRY WITH SURFACE TEMPERATURES ABOUT 5 TO 10 DEGREES BELOW NORMAL.
218 PM CDT WED APR 27 2016 The upper level trough that brought severe weather to the far eastern Permian Basin yesterday continues to shift off to the northeast.
400 PM EDT WED APR 27 2016 MODELS STILL SHOWING HIGH PRESSURE KEEPING THE WEATHER MOSTLY QUIET THROUGH THE WEEKEND, WITH THE EXCEPTION OF SOME POSSIBLE SHOWER ACTIVITY THIS EVENING AND TOMORROW AFTERNOON, DUE TO THE SEA/GULF BREEZES.
/ISSUED 1128 AM CDT WED APR 27 2016/ Upper level low pressure was centered near the KS/NE border late this morning. At the surface, low pressure was located near Lincoln, NE with a Pacific cold front extending south of the low across E OK. The next upper low will begin to eject out of the desert southwest later Thursday. with a warm front (along with improving low-level moisture) lifting into southern OK late Thursday into Thursday night.
144 PM MDT WED APR 27 2016 UPPER LOW OVER SOUTH CENTRAL NEBRASKA EARLY THIS AFTERNOON WILL SLOWLY LIFT NORTHEAST TOWARD WESTERN IOWA TONIGHT. CLOUDS INCREASE MID TO LATE EVENING THROUGH THE OVERNIGHT HOURS FROM SOUTHWEST TO NORTHEAST AHEAD OF ANOTHER LOW PRESSURE CENTER FORECAST TO MOVE INTO WESTERN ARIZONA/SOUTHEAST CALIFORNIA. LOW TEMPERATURES IN THE LOW TO UPPER 30S (WEST TO EAST ACROSS THE AREA). FOR THURSDAY THE UPPER LOW IS FORECAST TO MOVE ALMOST DUE EAST INTO SOUTHERN UTAH AND NORTH CENTRAL ARIZONA. HIGH TEMPERATURES IN THE LOW 50S TO AROUND 60. H5 CLOSED LOW CIRCULATION WILL BEGIN TO MOVE OVER THE PLAINS ON THURSDAY NIGHT AND IN SOME WAYS WILL PLAY A ROLE THROUGHOUT THE REST OF THE FORECAST PERIOD.