A few severe storms produced flash flooding and damaging wind gusts.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PUB wrote it up.
A few severe storms produced flash flooding and damaging wind gusts.
The local office's own words before the first event, 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 the first event at Jul 28, 2:05 PM MST, 2 hours 10 minutes earlier.
Area Forecast Discussion National Weather Service Pueblo CO 305 PM MDT Fri Jul 28 2017 .SHORT TERM...(This evening through Saturday) Issued at 305 PM MDT Fri Jul 28 2017 ...Increasing Monsoonal Activity through Tonight... After a relative down day yesterday, monsoonal activity is back on the upswing today. Storms firing over the mountains this afternoon have been pretty slow moving with pretty intense local rainfall rates according to some spotter reports. Also, some small, BB size hail was reported over the Wet Mountain Valley near Rosita earlier. The lack of steering flow and shear is evident in the atmosphere today. Storms are pulsing up fast to peak strength, then tending to weaken considerably as they drift off in varying directions at speeds less than 10 mph. The lack of shear is good in the sense that it will limit the severe potential. But, it is bad in the sense that storms will tend to sit over the same spot for too long of a period. Satellite derived Total Precipitable Water (TPW) values are still running well above average across the area, ranging from about 120 percent of average over northern parts of the forecast area up to about 160 percent of average over southern parts. And just as importantly, surface moisture remains high. Like they've been for days, dewpoints remain in the 60s across the plains, with 50s up into the high valleys. Moisture remains deep. Precipitation processes will remain efficient. Today's high resolution model runs are tending to favor the central and western mountains initially with less activity over the southernmost Sangres and plains. Then, unlike yesterday, through the afternoon and evening, they spread the activity east-southeast across the plains, eventually reaching the southeasternmost plains by mid to late evening. At the same time this is happening, the high res models want to keep at least some activity going on over the mountain areas through the evening hours, and then bring a new wave of energy north through the mountains around or after midnight. So, could be another night of persistent nocturnal convection. It's not supposed to happen too often in Colorado but seems to be happening a lot lately. .LONG TERM...(Saturday night through Friday) Issued at 305 PM MDT Fri Jul 28 2017 No big changes in current extended forecast, as quasi-stationary upper high across the southern high plains and into the Rockies keeps weak west to southwest flow aloft across the region through the weekend. Monsoonal moisture circling around the high maximizes across south central and southeast Colorado Saturday and Sunday with increased chances of afternoon and evening showers and storms expected across the all of area through the weekend. This will keep heavy rainfall and the potential for flash flooding high across the area, especially for areas over and near burn scars, and areas where previous heavy rains have saturated soils. The exact chances precipitation and bullseyes of heavy precipitation, especially over the eastern plains, will remain highly dependent on previous days convection, with models likely suffering from convective feedback issues throughout the extended portion of the forecast. At any rate, latest models indicating convection congealing into an mcs across the southeast plains Saturday night, which moves into southwestern Kansas through early Sunday morning. If this happens, it could be a down day of convection across eastern Colorado on Sunday. Either way, with expected wet weather, highs across the area through the weekend to remain below seasonal levels. Extended models continue to suggest the upper high slowly retrogrades back across the Desert SW and into the Great Basin region into the middle and through the end of the next week. This will lead to a slow warming and drying trend, especially across the eastern plains, as drier air slowly works into the region within more northerly flow aloft. && .AVIATION...(For the 00Z TAFS through 00Z Saturday evening) Issued at 305 PM MDT Fri Jul 28 2017 Monsoon continues. There will be an upturn in storm coverage compared to yesterday for all areas this evening. Yesterday, the mountains had some isolated activity and the plains had very little. This evening, storm coverage will increase all areas. Pilots attempting to navigate through storms can expect to encounter MVFR, IFR and LIFR conditions in areas of precipitation. All 3 terminals could see a storm this evening. High res model runs suggest KCOS and KPUB probably have the best chance of a storm this evening with the odds a little lower at KALS. However, the same model runs show a new round of convection moving up from the south around or after midnight, which would tend to favor KALS in the overnight hours. Will have to monitor and see how much punch that wave of energy actually has before keeping storms in the TAF for KALS overnight. One more thing to watch for overnight is the possibility of some ground fog formation. With all of the wet conditions, we've been seeing more of it lately than usual for this time of year. && .PUB WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...LW LONG TERM...MW AVIATION...LW
Hazardous Weather Outlook National Weather Service Pueblo CO 1153 AM MDT Fri Jul 28 2017 COZ058>089-093>099-291800- Western Mosquito Range/East Lake County Above 11000 Ft- Leadville Vicinity/Lake County Below 11000 Ft- Eastern Sawatch Mountains above 11000 Ft- Western Chaffee County Between 9000 and 11000 Ft- Central Chaffee County Below 9000 Ft- Western Mosquito Range/East Chaffee County above 9000Ft- Saguache County West of Continental Divide Below 10000 Ft- Saguache County East of Continental Divide below 10000 Ft- La Garita Mountains Above 10000 Ft- Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Ft- Eastern San Juan Mountains Above 10000 Ft- Del Norte Vicinity/Northern San Luis Valley Below 8500 Ft- Alamosa Vicinity/Central San Luis Valley Below 8500 Ft- Southern San Luis Valley- Northern Sangre de Cristo Mountains Between 8500 And 11000 Ft- Northern Sangre de Cristo Mountains above 11000 Ft- Southern Sangre de Cristo Mountains Between 7500 and 11000 Ft- Southern Sangre de Cristo Mountains Above 11000 Ft- Northwestern Fremont County Above 8500Ft- Western/Central Fremont County Below 8500 Ft- Wet Mountain Valley Below 8500 Ft- Wet Mountains between 6300 and 10000Ft- Wet Mountains above 10000 Ft- Teller County/Rampart Range above 7500fT/Pike's Peak Between 7500 And 11000 Ft-Pikes Peak above 11000 Ft- Canon City Vicinity/Eastern Fremont County- Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Ft- Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Ft-Pueblo Vicinity/Pueblo County Below 6300 Feet- Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Ft- Trinidad Vicinity/Western Las Animas County Below 7500 Ft- 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- 1153 AM MDT Fri Jul 28 2017 This hazardous weather outlook is for portions of central...east central...south central and southeast Colorado. .DAY ONE...This Afternoon and Tonight Scattered to numerous showers and thunderstorms will develop over the mountains this afternoon, then spread into the plains during the evening and overnight hours. The primary risks with thunderstorms today will be locally heavy rainfall, wind gusts up to 50 mph, hail up to 1/2 inch in diameter and dangerous cloud to ground lightning. Localized flash flooding will be a threat for burn scars, urban areas and locations with saturated soil conditions. One or two storms could become marginally severe across portions of the southeast plains late this afternoon and evening where hail up to the size of quarters and wind gusts to near 60 mph will be possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Scattered to numerous afternoon and evening thunderstorms will be possible each day through Tuesday with thunderstorms persisting into the early morning hours across portions of the plains at times. The primary thunderstorm risks during this period will be heavy rainfall capable of producing flash flooding, lightning, small hail, and wind gusts up to 50 mph. One or two thunderstorms across the plains on Saturday could become severe with large hail and damaging wind gusts up to 60 mph possible. Thunderstorms will become less widespread and more confined to the mountains for Wednesday and Thursday. However, they will still carry the threat for heavy rainfall and localized flash flooding. .SPOTTER INFORMATION STATEMENT... Weather conditions that meet reporting criteria for spotters will be possible this afternoon and evening across south central and southeast Colorado. 50/50
Special Weather Statement
National Weather Service Pueblo CO
110 PM MDT FRI JUL 28 2017
COZ076-077-281945-
Western/Central Fremont County Below 8500 Ft CO-
Northwestern Fremont County Above 8500Ft CO-
110 PM MDT FRI JUL 28 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN FREMONT COUNTY UNTIL
145 PM MDT...
At 109 PM MDT, Doppler radar was tracking a strong thunderstorm over
Waugh Mountain. This storm was nearly stationary.
Half inch hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Waugh Mountain.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3859 10552 3851 10571 3860 10582 3869 10577
3869 10566
TIME...MOT...LOC 1909Z 224DEG 0KT 3859 10571
tlmSpecial Weather Statement National Weather Service Pueblo CO 234 PM MDT FRI JUL 28 2017 COZ076-077-282115- Western/Central Fremont County Below 8500 Ft CO- Northwestern Fremont County Above 8500Ft CO- 234 PM MDT FRI JUL 28 2017 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN FREMONT COUNTY UNTIL 315 PM MDT... At 233 PM MDT, Doppler radar was tracking a strong thunderstorm over Texas Creek moving north at 20 mph. Half inch hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Cotopaxi, Texas Creek and Waugh Mountain. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3835 10547 3832 10569 3869 10585 3870 10550 TIME...MOT...LOC 2033Z 168DEG 18KT 3841 10561 tlm
Special Weather Statement National Weather Service Pueblo CO 501 PM MDT FRI JUL 28 2017 COZ088-093-094-282330- Eastern Las Animas County CO-La Junta Vicinity/Otero County CO- Trinidad Vicinity/Western Las Animas County Below 7500 Ft CO- 501 PM MDT FRI JUL 28 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN OTERO AND NORTH CENTRAL LAS ANIMAS COUNTIES UNTIL 530 PM MDT... At 500 PM MDT, Doppler radar was tracking a strong thunderstorm over Thatcher, or 37 miles northeast of Trinidad, moving north at 10 mph. Dime size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Delhi and Thatcher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3758 10393 3746 10405 3758 10426 3772 10411 TIME...MOT...LOC 2300Z 132DEG 13KT 3758 10406 mw
Special Weather Statement National Weather Service Pueblo CO 514 PM MDT FRI JUL 28 2017 COZ084-085-282345- Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Ft CO- Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Ft CO- 514 PM MDT FRI JUL 28 2017 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN EL PASO COUNTY UNTIL 545 PM MDT... At 512 PM MDT, Doppler radar was tracking a strong thunderstorm south of Peyton, or 23 miles northeast of Colorado Springs, moving southeast at 15 mph. Very heavy rain, half inch hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Yoder and Ellicott and open country of northeastern El Paso County. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3895 10457 3904 10435 3884 10414 3870 10445 TIME...MOT...LOC 2312Z 330DEG 16KT 3894 10441 mw
The Pueblo radar (KPUX), 67 km away, was scanning. The volume nearest the first event began at 23:13 UTC.
2 flash flood, 1 thunderstorm wind. Local standard time, as filed.
A strong storm produced heavy rain that flooded county roads south of Peyton and Calhan. No major road damage was reported.
A few trees and many tree limbs were downed in Las Animas.
Very heavy rain from a thunderstorm produced water in excess of 6 inches on streets in Las Animas and briefly flooded county roads near and south of John Martin Reservoir.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2017Every state in 2017This day in weather historyWarnings in Colorado, July 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 705026, 705024, 705023.