Area Forecast Discussion
Issued by NWS Pueblo, CO
Issued by NWS Pueblo, CO
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371 FXUS65 KPUB 171142 AFDPUB Area Forecast Discussion National Weather Service Pueblo CO 542 AM MDT Mon Jun 17 2024 .KEY MESSAGES... - Hot again one more day, but it will be a degree or two cooler than yesterday. - An isolated strong storm possible over the far eastern plains once again late this afternoon and early evening. - Cold front passage on Tuesday morning, stalling over NM-CO border, leading to cooler temperatures north of the front. - A severe thunderstorm is unlikely (15%) in the Baca County area Tuesday afternoon, but the chance remains. - Gulf of Mexico moisture reaches southern Colorado on Thursday and lasts through Sunday. T-Storms expected during this period. && .SHORT TERM /THROUGH TUESDAY/... Issued at 242 AM MDT Mon Jun 17 2024 Currently... An outflow boundary has moved across parts of the southeast CO plains earlier this evening per radar and wind observations. This boundary was located from roughly KLIC to east of KPUB down towards Walsenburg. East of this line rather brisk south to southwest were noted, with dwpts in the 50s to around 60 over the far eastern plains. A few isolated storms were noted in far western KS, with some weak echoes over the far eastern counties. Today... The heat will be with us once again, along with breezy to windy southwest to west winds over the area by afternoon. We will see 100s once again, but mainly from KLHX east ot the KS border. Max readings should be about 103 so I do not plan on issuing any heat related advisories with this package. Overall temps should be about 1 to 3 degrees cooler than max temps yesterday. Once again we may see one or two thunderstorms over the far eastern plains today, and the storms could produce locally strong gusty winds, mainly late this afternoon and early evening over the far eastern plains. Meteorological conditions favorable for extreme fire behavior will occur over all of the fcst area today (gusty winds/low RH), However, where the fuels are critical , a Red Flag Warning is in effect and where the fuels are not critical, no fire weather highlights are in place. Tonight... Another warm night is in store with the low level jet cranking once again over the far eastern plains during the early morning hours. However, relief is in sight as a lee trough will be pushing across the Palmer Divide prior to sunrise and this system will be bringing cooler air to the region for tomorrow. && .LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/... Issued at 242 AM MDT Mon Jun 17 2024 Tuesday: A cold front is set to pass over the region during the beginning of the short term period (Tuesday at 6am). There is some varying information about the speed at which the front passes over the region, with the GFS being the slowest, but hi-rez EC, NAM suite of products, and the hi-rez CAMs all agreeing that around 6am the front will pass over the majority of the eastern plains. The front is expected to stall along the NM/OK-CO border, which means that to the north of the front cooler temperatures will exist, and to the south hot temperatures will continue. Another additional impact that has a low likelihood of occurring is a supercell developing over the Baca County area on Tuesday afternoon. Many of the HREF members keeps the severe caliber convection over Kansas, but one member, the NAMNest, has been persistent in developing a supercell over Baca County. Just something to keep an eye out for, but MUCAPE ranges from 2000-3000 J/kg and the 0-6km Bulk Shear values of around 30-40kts. Wednesday: A proper post-frontal airmass sets up over southeastern Colorado - which is very reminiscent of cold season frontal passages. Winds shift from northerly to east-southeasterly with upslope flow filling over the plains. Depending on how cold it actually gets, the air mass may be too stable for thunderstorms on Wednesday, leaving just rain showers over the far eastern plains. However, the forecast right now is in the upper 70s for much of the eastern plains, which presents around 800 J/kg of CAPE, so some rumbles of thunderstorms are expected in the afternoon across the entire region. Right now high temperatures over the mountain valleys and the plains are forecast to be roughly the same with values in the 60s to mid 70s. Thursday through Sunday: A surge of Gulf of Mexico moisture will reach southern Colorado and will remain in place throughout the rest of the forecast period (Sunday), which will equate in a more active thunderstorm period. CAPE values will not be impressive, with the max being on Thursday and Friday and values being around 1000 J/kg and 0-6km Bulk Shear value ranging around 20 to 25 kts over the plains. So thunderstorms during this period will be relatively weak, perhaps an isolated severe thunderstorm. Temperatures during this period will rebound into the 90s over the plains and the 80s over the mountain valleys. && .AVIATION /12Z TAFS THROUGH 12Z TUESDAY/... Issued at 535 AM MDT Mon Jun 17 2024 VFR conditions are anticipated during the next 24 hours at all 3 taf sites, KPUB, KALS and KCOS. Primary concern will be gusty west to southwest winds developing by late morning or early afternoon and lasting into the early evening hours. With a lee trough developing tonight, west to northwest winds will keep up through the early AM hours tomorrow, especially at KCOS and KPUB. && .PUB WATCHES/WARNINGS/ADVISORIES... Red Flag Warning from 11 AM this morning to 9 PM MDT this evening for COZ220-221-223>227-232-233-237. && $$ SHORT TERM...HODANISH LONG TERM...SKELLY AVIATION...HODANISH