Alert archive / Colorado / Frost Advisories in 2026
Frost Advisory 2, NWS Pueblo, CO
NWS Pueblo, CO issued this frost advisory at May 18, 2026, 11:30 AM MDT for 6 counties in Colorado. It took effect at May 19, 2026, 12:00 AM MDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- May 18, 2026, 11:30 AM MDT (17:30 UTC)
- In effect from
- May 19, 2026, 12:00 AM MDT
- Expired
- May 19, 2026, 8:00 AM MDT
- In force
- 8 hr
- Issued by
- NWS Pueblo, CO
Counties Crowley County, CO, El Paso County, CO, Huerfano County, CO, Kiowa County, CO, Las Animas County, CO, Pueblo County, CO
The radar
The Pueblo radar (KPUX), 38 km from the middle of the area, began a volume at 17:34 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Dodge City, (KDDC), launched 12:00Z, 5.5 hours before the alert went out and 370 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1617 J/kg
- Mixed-layer CIN
- -185 J/kg
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 371 m²/s²
- 0-3 km storm-relative helicity
- 392 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 13.2
The text
As transmitted.
236 WWUS75 KPUB 181730 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 1130 AM MDT Mon May 18 2026 COZ084-190130- /O.UPG.KPUB.FZ.A.0004.260519T0600Z-260519T1400Z/ /O.NEW.KPUB.FZ.W.0004.260519T0600Z-260519T1400Z/ Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Feet- Including Black Forest 1130 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...Northern El Paso. * WHEN...From midnight tonight to 8 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ COZ070-071-190000- /O.CON.KPUB.DU.W.0002.000000T0000Z-260519T0000Z/ /O.CON.KPUB.HW.W.0007.000000T0000Z-260518T2200Z/ Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- Including San Luis, Alamosa, La Jara, Sanford, Manassa, Blanca, Antonito, Monte Vista, and Fort Garland 1130 AM MDT Mon May 18 2026 ...BLOWING DUST WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 4 PM MDT THIS AFTERNOON... * WHAT...For the High Wind Warning, southwest winds 25 to 35 mph with gusts up to 65 mph. For the Blowing Dust Warning, widespread blowing dust. * WHERE...Central San Luis Valley, and Southern San Luis Valley. * WHEN...For the Blowing Dust Warning, until 6 PM MDT this evening. For the High Wind Warning, until 4 PM MDT this afternoon. * IMPACTS...Severely limited visibilities are expected. Travel will be dangerous and possibly life-threatening. Damaging winds may blow down trees and power lines. Widespread power outages are possible. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory problems should make preparations to stay indoors until the storm passes. Be ready for a sudden drop in visibility to near zero. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep foot off the brake pedal. Remember, 'Pull Aside, Stay Alive'. Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ COZ069-190000- /O.CON.KPUB.DU.W.0002.000000T0000Z-260519T0000Z/ Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Including Center and Del Norte 1130 AM MDT Mon May 18 2026 ...BLOWING DUST WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Widespread blowing dust. * WHERE...Northern San Luis Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Severely limited visibilities are expected. Travel will be dangerous and possibly life-threatening. * ADDITIONAL DETAILS...Winds gusting up to 50 to 60 mph will cause blowing dust. Visibility may drop to under 1/4 mile at times near plowed fields or areas of loose soils. Use extreme caution if you must travel across the area today. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory problems should make preparations to stay indoors until the storm passes. Be ready for a sudden drop in visibility to near zero. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep foot off the brake pedal. Remember, 'Pull Aside, Stay Alive'. && $$ COZ085-095-096-190130- /O.UPG.KPUB.FZ.A.0004.260519T0600Z-260519T1400Z/ /O.NEW.KPUB.FR.Y.0002.260519T0600Z-260519T1400Z/ Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Feet-Western Kiowa County-Eastern Kiowa County- Including Peterson Space Force Base, Eads, Sheridan Lake, and Colorado Springs 1130 AM MDT Mon May 18 2026 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT TUESDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Kiowa, and Southern El Paso. * WHEN...From midnight tonight to 8 AM MDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ COZ086>089-094-190130- /O.NEW.KPUB.FR.Y.0002.260519T0600Z-260519T1400Z/ Pueblo Vicinity/Pueblo County Below 6300 Feet-Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-Trinidad Vicinity/Western Las Animas County Below 7500 Feet-Crowley County- Eastern Las Animas County- Including Branson, Ordway, Trinidad, Olney Springs, Pueblo, Walsenburg, and Kim 1130 AM MDT Mon May 18 2026 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT TUESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Pueblo, Crowley, Eastern Las Animas, Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet, and Trinidad Vicinity/Western Las Animas County Below 7500 Feet. * WHEN...From midnight tonight to 8 AM MDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Visit us at http://www.weather.gov/pub KT
5 follow-up statements
889 WWUS75 KPUB 182000 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 200 PM MDT Mon May 18 2026 COZ070-071-190000- /O.CAN.KPUB.DU.W.0002.000000T0000Z-260519T0000Z/ /O.CAN.KPUB.HW.W.0007.000000T0000Z-260518T2200Z/ /O.NEW.KPUB.DU.Y.0004.260518T2000Z-260519T0000Z/ Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- Including San Luis, Alamosa, La Jara, Sanford, Manassa, Blanca, Antonito, Monte Vista, and Fort Garland 200 PM MDT Mon May 18 2026 ...BLOWING DUST ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...BLOWING DUST WARNING IS CANCELLED... ...HIGH WIND WARNING IS CANCELLED... * WHAT...Visibility between one-quarter and one mile in blowing dust. * WHERE...Central San Luis Valley, and Southern San Luis Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. * ADDITIONAL DETAILS...Take care driving near recently plowed fields or areas with loose soil conditions as visibility may drop rapidly over short distances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory problems should make preparations to stay indoors until the storm passes. Be ready for a sudden drop in visibility to near zero. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep foot off the brake pedal. Remember, 'Pull Aside, Stay Alive'. && $$ COZ069-190000- /O.CAN.KPUB.DU.W.0002.000000T0000Z-260519T0000Z/ /O.NEW.KPUB.DU.Y.0004.260518T2000Z-260519T0000Z/ Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Including Center and Del Norte 200 PM MDT Mon May 18 2026 ...BLOWING DUST ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...BLOWING DUST WARNING IS CANCELLED... * WHAT...Visibility between one-quarter and one mile in blowing dust. * WHERE...Northern San Luis Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. * ADDITIONAL DETAILS...Take care driving near recently plowed fields or areas with loose soil conditions as visibility may drop rapidly over short distances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory problems should make preparations to stay indoors until the storm passes. Be ready for a sudden drop in visibility to near zero. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep foot off the brake pedal. Remember, 'Pull Aside, Stay Alive'. && $$ COZ084-190400- /O.CON.KPUB.FZ.W.0004.260519T0600Z-260519T1400Z/ Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Feet- Including Black Forest 200 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 28 degrees expected. * WHERE...Northern El Paso. * WHEN...From midnight tonight to 8 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ COZ085>089-094>096-190400- /O.CON.KPUB.FR.Y.0002.260519T0600Z-260519T1400Z/ Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet- Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet- Trinidad Vicinity/Western Las Animas County Below 7500 Feet- Crowley County-Eastern Las Animas County-Western Kiowa County- Eastern Kiowa County- Including Branson, Eads, Trinidad, Ordway, Olney Springs, Peterson Space Force Base, Pueblo, Sheridan Lake, Walsenburg, Kim, and Colorado Springs 200 PM MDT Mon May 18 2026 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT TUESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Kiowa, Southern El Paso, Pueblo, Crowley, Eastern Las Animas, Huerfano, and Las Animas Counties. * WHEN...From midnight tonight to 8 AM MDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Visit us at http://www.weather.gov/pub KT
247 WWUS75 KPUB 182352 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 552 PM MDT Mon May 18 2026 COZ069>071-190100- /O.EXP.KPUB.DU.Y.0004.000000T0000Z-260519T0000Z/ Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- Including Fort Garland, Sanford, Del Norte, Alamosa, Center, Monte Vista, Blanca, San Luis, Manassa, Antonito, and La Jara 552 PM MDT Mon May 18 2026 ...BLOWING DUST ADVISORY WILL EXPIRE AT 6 PM MDT THIS EVENING... The threat has ended. $$ COZ084-190800- /O.CON.KPUB.FZ.W.0004.260519T0600Z-260519T1400Z/ Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Feet- Including Black Forest 552 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 28 degrees expected. * WHERE...Northern El Paso. * WHEN...From midnight tonight to 8 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ COZ085>089-094>096-190800- /O.CON.KPUB.FR.Y.0002.260519T0600Z-260519T1400Z/ Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet- Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet- Trinidad Vicinity/Western Las Animas County Below 7500 Feet- Crowley County-Eastern Las Animas County-Western Kiowa County- Eastern Kiowa County- Including Colorado Springs, Olney Springs, Branson, Trinidad, Sheridan Lake, Walsenburg, Peterson Space Force Base, Kim, Ordway, Pueblo, and Eads 552 PM MDT Mon May 18 2026 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT TUESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Kiowa, Southern El Paso, Pueblo, Crowley, Eastern Las Animas, Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet, and Trinidad Vicinity/Western Las Animas County Below 7500 Feet. * WHEN...From midnight tonight to 8 AM MDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Visit us at http://www.weather.gov/pub Simcoe
069 WWUS75 KPUB 190645 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 1245 AM MDT Tue May 19 2026 COZ084-191400- /O.CON.KPUB.FZ.W.0004.000000T0000Z-260519T1400Z/ Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Feet- Including Black Forest 1245 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 28. * WHERE...Northern El Paso. * WHEN...Until 8 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ COZ085>089-094>096-191400- /O.CON.KPUB.FR.Y.0002.000000T0000Z-260519T1400Z/ Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet- Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet- Trinidad Vicinity/Western Las Animas County Below 7500 Feet- Crowley County-Eastern Las Animas County-Western Kiowa County- Eastern Kiowa County- Including Branson, Ordway, Olney Springs, Peterson Space Force Base, Kim, Colorado Springs, Pueblo, Sheridan Lake, Eads, Walsenburg, and Trinidad 1245 AM MDT Tue May 19 2026 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM MDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Kiowa, Southern El Paso, Pueblo, Crowley, Eastern Las Animas, Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet, and Trinidad Vicinity/Western Las Animas County Below 7500 Feet. * WHEN...Until 8 AM MDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Visit us at http://www.weather.gov/pub Ehr
545 WWUS75 KPUB 191025 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 425 AM MDT Tue May 19 2026 COZ084-191400- /O.CON.KPUB.FZ.W.0004.000000T0000Z-260519T1400Z/ Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Feet- Including Black Forest 425 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 28. * WHERE...Northern El Paso. * WHEN...Until 8 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ COZ085>089-094>096-191400- /O.CON.KPUB.FR.Y.0002.000000T0000Z-260519T1400Z/ Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet- Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet- Trinidad Vicinity/Western Las Animas County Below 7500 Feet- Crowley County-Eastern Las Animas County-Western Kiowa County- Eastern Kiowa County- Including Sheridan Lake, Trinidad, Kim, Branson, Colorado Springs, Ordway, Pueblo, Olney Springs, Eads, Peterson Space Force Base, and Walsenburg 425 AM MDT Tue May 19 2026 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM MDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Kiowa, Southern El Paso, Pueblo, Crowley, Eastern Las Animas, Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet, and Trinidad Vicinity/Western Las Animas County Below 7500 Feet. * WHEN...Until 8 AM MDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Visit us at http://www.weather.gov/pub MG
501 WWUS75 KPUB 191348 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 748 AM MDT Tue May 19 2026 COZ084-191500- /O.EXP.KPUB.FZ.W.0004.000000T0000Z-260519T1400Z/ Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Feet- Including Black Forest 748 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 8 AM MDT THIS MORNING... Temperatures will rise above freezing around 8 AM across northern El Paso County, therefore the Freeze Warning will be allowed to expire. $$ COZ085>089-094>096-191500- /O.EXP.KPUB.FR.Y.0002.000000T0000Z-260519T1400Z/ Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet- Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet- Trinidad Vicinity/Western Las Animas County Below 7500 Feet- Crowley County-Eastern Las Animas County-Western Kiowa County- Eastern Kiowa County- Including Eads, Pueblo, Ordway, Kim, Sheridan Lake, Trinidad, Walsenburg, Olney Springs, Branson, Colorado Springs, and Peterson Space Force Base 748 AM MDT Tue May 19 2026 ...FROST ADVISORY WILL EXPIRE AT 8 AM MDT THIS MORNING... Temperatures will continue to warm and frost is no longer a risk. Therefore the Frost Advisory will be allowed to expire at 8 AM. $$ Visit us at http://www.weather.gov/pub KT
What forecasters said that day
The local office's own words before this frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pueblo, CO wrote its last area forecast discussion before this frost advisory went out at May 18, 11:15 AM MDT, 15 minutes earlier. Its key messages:
- Extreme fire danger is expected across our southern plains today, with southwest winds gusting 45 to 50 mph and humidity values in the single digits.
- 50 mph winds are expected over the southern mountains and the San Luis Valley, which may lead to blowing dust over the valley, blowing snow over the mountains, and travel concerns resulting in both cases.
- Showers will be possible north of Highway 50 and west of I-25, with thunderstorms mainly across the Pikes Peak region.
- A Freeze Watch remains in place for El Paso and Kiowa counties tonight, and frost may be possible for other portions of the plains as well.
- Cooler and wetter weather is expected for all areas tomorrow and Wednesday.
Area forecast discussion, May 18, 11:15 AM MDT, 15 minutes before
Area Forecast Discussion National Weather Service Pueblo CO 1115 AM MDT Mon May 18 2026 .KEY MESSAGES... - Extreme fire danger is expected across our southern plains today, with southwest winds gusting 45 to 50 mph and humidity values in the single digits. - 50 mph winds are expected over the southern mountains and the San Luis Valley, which may lead to blowing dust over the valley, blowing snow over the mountains, and travel concerns resulting in both cases. - Showers will be possible north of Highway 50 and west of I-25, with thunderstorms mainly across the Pikes Peak region. - A Freeze Watch remains in place for El Paso and Kiowa counties tonight, and frost may be possible for other portions of the plains as well. - Cooler and wetter weather is expected for all areas tomorrow and Wednesday. && .UPDATE... Issued at 1112 AM MDT Mon May 18 2026 Lots of changes to the forecast this morning, mainly with headlines. Blowing Dust and High Wind Warnings have been added to the San Luis Valley with high winds mainly confined to the central and southern portions of the area. Still monitoring Baca and Las Animas counties for potential Blowing Dust Advsy or Dust storm warnings once the winds kick in as the front lifts northward. These decisions will need to be made based on mesoscale details with short fused type warnings. -KT && .SHORT TERM /THROUGH TONIGHT/... Issued at 105 AM MDT Mon May 18 2026 For the plains..The elusive cold front has sagged back south since sunset, and is now sitting between Springfield and Campo across Baca County. This front and where it ends up again this afternoon will be the driving factor in today's forecast across the plains once again. North of the front and west of I-25, stratus has begun to develop up against the terrain as of midnight. USAFA is reporting ceilings down to 2,000ft, and the Colorado Springs airfield is starting to see lower scattered decks as well. Models continue to suggest that rain will be possible as upslope continues across the mountains/plains interface throughout this morning. Thunderstorms will be possible across the Pikes Peak region again this afternoon, though severe development is not expected. That said, lots of shear will present over the region today, so if any areas clear out and warm up, chances for a stronger storm or two may be possible, especially over the higher terrain of the Pikes Peak region. The main forecast concern on our plains today though will be our high end Red Flag Warning across our southern plains. Las Animas and Baca counties are both included in this warning, and southern portions of Bent and Prowers counties may see periods of critical conditions as well depending on how far north/east the front gets shoved this afternoon. Over these areas, single digit relative humidity values and southwest wind gusts of 45 to 50 mph are expected. The strongest winds and lowest humidities will be over Baca County this afternoon, which will lead to the possibility for extreme fire behavior for any new or existing fires today. Please use extra caution and take care not to start a wildfire today. One last note for the plains, gusty winds over our southeast plains may also lead to blowing dust and hazardous travel conditions. Once the sun sets, the front *finally* pushes itself completely southwards, allowing all areas to cool and moisten through the overnight hours. This will put an end to fire weather concerns for a few days. Overnight lows will be chilly in our post frontal airmass though, and areas north of Highway 50 may see hard freeze conditions by Tuesday morning. El Paso and Kiowa counties are both under Freeze Watches for tonight through early Tuesday morning, and temperatures down into the upper 20s will be possible. Another tier of counties or two may also see the potential for frost depending on clearing through the overnight hours. For the high country and the San Luis Valley..Models bring the trough axis through our southern mountains between 9 AM and Noon or so, which will be the windiest timeframe for the San Juans, the San Luis Valley, and the Sangres. The NBM continues to be the only outlier suggesting high wind criteria, so have continued to trend towards other model consensus, which keeps winds below warning levels across the area. The San Luis Valley is likely to see gusts upwards of 50 mph or so though, especially if any showers survive off the mountains and help to enhance gusts coming down the terrain. Areas of blowing dust are likely across the Valley today, especially with any localized stronger winds from decaying showers. Over the mountains, a quick 2 to 4 inches of wind driven snow will be possible for the San Juans and the central mountains. Though totals will be low, degraded visibility and hazardous travel conditions may be possible from blowing snow, especially over mountain passes. Snow comes to an end for both range by around midnight or so at the latest. && .LONG TERM /TUESDAY THROUGH SUNDAY/... Issued at 105 AM MDT Mon May 18 2026 Tuesday and Wednesday.. The front is finally through us and will stay through us for Tuesday and Wednesday. We stay in southwest flow aloft as messy troughing sits out west. This pattern will keep temperatures cooler than normal, and it will keep precip chances over us as well. Models bring shortwave energy through the trough and over us on Tuesday, which will help to develop weak showers and thunderstorms over the high country on Tuesday afternoon, and better chances for widespread rain on the plains overnight Tuesday and into Wednesday. Daytime highs look to stay in the 60s both days, with decent chances for precipitation both days. Thursday Onwards.. Models are not in great agreement about the pattern late week onwards, but the general consensus suggests some type of northwest flow with a trough passing to our north. This looks to bring temperatures back into the near normal range for Thursday and Friday, with warmer than normal temperatures by the weekend. Chances for showers and thunderstorms will remain in the forecast nearly every afternoon, especially across the high country. && .AVIATION /12Z TAFS THROUGH 12Z TUESDAY/... Issued at 543 AM MDT Mon May 18 2026 KALS: Gusty southwest winds will be in place throughout the day, gusting 25-30 knots this morning and closer to 45 knots by 16Z or so. With the strongest gusts, there will be a period late this morning through mid afternoon with the potential for periods of blowing dust and reduced visibility. After 22Z, there is also a low- end chance that rain showers will move off the terrain and pass bu the terminal, but chances are low enough to leave as PROB30 for now. KCOS: Winds will turn SE later this morning, gusting to 25 knots. Showers and thunderstorms are expected to move in from the north- northwest after 20Z or so, bringing precipitation and gusty outflow to the terminal. Outflow from storms will reach 35 knots or so. Precip departs the immediate area prior to 00Z, though gusty winds and MVFR-IFR cigs will remain the rest of the period. Winds will turn northerly later this afternoon as a frontal surge moves in. KPUB: MVFR to IFR conditions expected through the period. Winds turn ESE later this morning, with a lower-end chance for thunderstorms to pass by the terminal during the afternoon. Winds will generally gust to 25 knots or so, with any outflow from thunderstorms gusting to about 35 knots. Winds will turn north later in the day as a frontal surge moves in. && .PUB WATCHES/WARNINGS/ADVISORIES... Blowing Dust Warning until 6 PM MDT this evening for COZ069>071. High Wind Warning until 4 PM MDT this afternoon for COZ070-071. Freeze Watch from late tonight through Tuesday morning for COZ084-085-095-096. Red Flag Warning until 8 PM MDT this evening for COZ230-233- 237. && UPDATE...KT SHORT TERM...EHR LONG TERM...EHR AVIATION...GARBEROGLIO
Hazardous weather outlook, May 18, 1:12 AM MDT, 10 hours 18 minutes before
Hazardous Weather Outlook National Weather Service Pueblo CO 112 AM MDT Mon May 18 2026 COZ058>089-093>099-190715- Western Mosquito Range/East Lake County Above 11000 Feet- Leadville Vicinity/Lake County Below 11000 Feet- Eastern Sawatch Mountains Above 11000 Feet- Western Chaffee County Between 9000 and 11000 Feet- Central Chaffee County Below 9000 Feet- Western Mosquito Range/East Chaffee County Above 9000 Feet- Saguache County West of Continental Divide Below 10000 Feet- Saguache County East of Continental Divide Below 10000 Feet- La Garita Mountains Above 10000 Feet- Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Feet-Eastern San Juan Mountains Above 10000 Feet- Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet- Northern Sangre de Cristo Mountains Above 11000 Feet- Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet- Southern Sangre de Cristo Mountains Above 11000 Feet- Northwestern Fremont County Above 8500 Feet- Western/Central Fremont County Below 8500 Feet- Wet Mountain Valley Below 8500 Feet- Wet Mountains between 6300 and 10000 Feet- Wet Mountains Above 10000 Feet- Teller County/Rampart Range Above 7500 Feet/Pikes Peak Between 7500 And 11000 Feet-Pikes Peak Above 11000 Feet- Canon City Vicinity/Eastern Fremont County- Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Feet- Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet- Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet- Trinidad Vicinity/Western Las Animas County Below 7500 Feet- Crowley County-La Junta Vicinity/Otero County- Eastern Las Animas County-Western Kiowa County- Eastern Kiowa County-Las Animas Vicinity/Bent County- Lamar Vicinity/Prowers County-Springfield Vicinity/Baca County- 112 AM MDT Mon May 18 2026 This hazardous weather outlook is for portions of central...east central...south central and southeast Colorado. .DAY ONE...Today and Tonight Extreme fire danger is expected across Las Animas and Baca counties today, where southwest winds gusting 45 to 50 mph are expected, along with single digit relative humidity values. These conditions may lead to extreme fire behavior for any new or existing or existing fires. Please use extra caution and take care not to start a wildfire today. 50 mph winds are also expected over the southern mountains and the San Luis Valley, which may result in blowing snow over the mountains, and blowing dust over the valley. In either case, hazardous travel conditions may be possible. Please check road conditions and use caution on areas roadways in low visibility situations today! Showers and weak thunderstorms will be possible for areas mainly along and north of Highway 50 this afternoon. .DAYS TWO THROUGH SEVEN...Tuesday through Saturday Chances for showers and weak thunderstorms persist daily for Tuesday through Saturday, especially over and near the higher terrain. .SPOTTER INFORMATION STATEMENT... Weather conditions that meet reporting criteria for spotters will be possible over portions of the region. EHR/EHR
In the hours before
Local storm report, May 18, 11:06 AM MDT, 24 minutes before
Preliminary Local Storm Report
National Weather Service Pueblo CO
1106 AM MDT Mon May 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1052 AM Non-Tstm Wnd Gst 2 S Alamosa 37.43N 105.87W
05/18/2026 M69 MPH Alamosa CO ASOS
ASOS station KALS Alamosa Airport.
&&
kamThe office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 8:19 AM MDT | Blowing Dust Advisory | PUB | Alamosa, Conejos, Costilla, Rio Grande, Saguache | 72 min |
| May 18, 9:14 AM MDT | Dust Storm Warning | PUB | Alamosa, Saguache | 46 min |
| May 18, 9:31 AM MDT | Blowing Dust Warning | PUB | Alamosa, Conejos, Costilla, Rio Grande, Saguache | 4 hr |
| May 18, 11:11 AM MDT | High Wind Warning | PUB | Alamosa, Conejos, Costilla, Rio Grande | 3 hr |
| May 18, 11:30 AM MDT | Freeze Warning | PUB | El Paso | 21 hr |
| May 18, 2:00 PM MDT | Blowing Dust Advisory | PUB | Alamosa, Conejos, Costilla, Rio Grande, Saguache | 4 hr |
Nearby
Frost Advisories in Colorado, 2026Every frost advisory in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.