Thunderstorms brough flash flooding to South Cheyenne Canyon causing some mud and rock slides and flooding of a road.
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The episode as NWS PUB wrote it up.
Thunderstorms brough flash flooding to South Cheyenne Canyon causing some mud and rock slides and flooding of a road.
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 May 22, 1:58 PM MST, 47 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PUEBLO CO 258 PM MDT FRI MAY 22 2009 .SHORT TERM... (TONIGHT AND SATURDAY) SLOW MOVING SHOWERS AND THUNDERSTORMS DEVELOPED THIS AFTERNOON OVR AND NR THE MTS...WITH JUST A COUPLE CELLS OVR THE SE PLAINS. THE BEST COVERAGE OF PCPN THE REST OF THIS AFTERNOON AND THIS EVENING WL CONTINUE TO BE OVR AND NR THE MTS AND HIGH VALLEYS. HEAVY RAIN WL BE THE MAIN THREAT...BUT SOME OF THE STRONGER STORMS WL ALSO HAVE SMALL HAIL. SEVERE WEATHER IS NOT LIKELY BUT IT IS POSSIBLE THAT ONE OR TWO STORMS COULD PRODUCE HAIL AROUND THE SIZE OF QUARTERS. WITH THE LOSS OF HEATING LATER THIS EVENING THE COVERAGE OF PCPN WL DECREASE...SO WL DECREASE THE PCPN COVERAGE...BUT WL KEEP SOME ISOLD POPS IN THE FORECAST FROM THE I-25 CORRIDOR AND WESTWARD. WITH LITTLE CHANGE IN THE WEATHER PATTERN TONIGHT OR SATURDAY...AND THE PRECIPITABLE WATER VALUES BEING 200 PERCENT OF NORMAL OR GREATER FROM THE I-25 CORRIDOR AND WESTWARD...WITH AROUND 100 PERCENT OF NORMAL OVR THE SOUTHEAST PLAINS...SAT WL BE MUCH LIKE TODAY WITH THE BEST PCPN COVERAGE OVR AND NR THE MTS AND HEAVY RAIN BEING THE MAIN THREAT. .LONG TERM... (SATURDAY NIGHT THROUGH FRIDAY) ...CHALLENGES ARE TEMPERATURE AND POP SPECIFICS... FAIRLY STAGNANT WEATHER PATTERN ACROSS THE CENTRAL ROCKIES IN THE LONG TERM. LOTS OF MOISTURE...BY WESTERN STANDARDS...IN PLACE AS SLOW MOVING UPPER SHORTWAVES ROTATE AROUND BROAD WESTERN TROUGH. SATURDAY NIGHT THROUGH SUNDAY NIGHT...EXPECT DEEP CONVECTION TO WANE SLOWLY THROUGH THE NIGHT...AND PICK UP AGAIN WITH HEATING SUNDAY AFTERNOON AND INTO THE NIGHT. 0 TO 6 KM BULK SHEAR VALUES LOW THROUGH THIS TIME PERIOD...AND CAPE VALUES GENERALLY UNDER 500 J/KG. SEVERE WEATHER THREAT LOW...BUT ISOLATED FLASH FLOOD THREAT CERTAINLY CONTINUES. MONDAY AND MONDAY NIGHT...200-300MB POT VORT AND RESULTANT BROAD SCALE LIFT INCREASE BY MEMORIAL DAY...AND SOME HIGHER VALUES OF 0-6 KM BULK SHEAR AND CAPE (NEARLY 1000 J/KG) PROGGED ACROSS OUR EASTERN BORDER COUNTIES. STRONG TO MARGINALLY SEVERE STORMS POSSIBLE. REST OF THE AREAS SHOULD SEE ISOLATED TO SCATTERED MEASUREABLE PRECIPITATION...ALONG WITH THE CONTINUED THREAT FOR LOCALLY HEAVY RAIN AND FLASH FLOODING. THEN THROUGH FRIDAY...WEAK...BUT BROAD UPPER LOW CAMPS OUT OVER THE CENTRAL ROCKIES...BRINGING DAILY DEEP MOIST CONVECTION WITH DAYTIME HEATING...AND THE POSSIBILITY OF LOCALLY HEAVY RAIN AND FLASH FLOODS. THROUGHOUT THE WEEK...THERE WILL BE LITTLE DAY TO DAY TEMPERATURE CHANGE. -TLM- && .AVIATION...IN GENERAL VFR CONDITIONS ARE EXPECTED AT THE THREE TAF SITES THROUGH THE PERIOD. HOWEVER THUNDERSTORMS WITH HEAVY RAIN WL BE A POSSIBILITY THIS EVENING AND AGAIN SATURDAY AFTERNOON...AND THERE COULD BE SOME MVFR CIGS AND VSBYS. && .PUB WATCHES/WARNINGS/ADVISORIES... NONE. && 28/13
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PUEBLO CO 655 AM MDT FRI MAY 22 2009 COZ058>089-093>099-231300- 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 9000 FT- 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 FEET- SOUTHERN SANGRE DE CRISTO MOUNTAINS BETWEEN 7500 AND 11000 FT- SOUTHERN SANGRE DE CRISTO MOUNTAINS ABOVE 11000 FT- NORTHWESTERN FREMONT COUNTY ABOVE 8500 FT- WESTERN/CENTRAL FREMONT COUNTY BELOW 8500 FT- WET MOUNTAIN VALLEY BELOW 8500 FEET- WET MOUNTAINS BETWEEN 6300 AND 10000 FT- WET MOUNTAINS ABOVE 10000 FT- TELLER COUNTY/RAMPART RANGE ABOVE 7500 FT/PIKES 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 AND VICINITY/PUEBLO COUNTY BELOW 6300 FT- 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- 655 AM MDT FRI MAY 22 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL...EAST CENTRAL...SOUTH CENTRAL AND SOUTHEAST COLORADO. .DAY ONE...TODAY AND TONIGHT FOR TODAY...SCATTERED THUNDERSTORMS WILL BE FOUND FROM THE I-25 CORRIDOR WESTWARD DURING THE AFTERNOON...WITH GENERALLY LESS ACTIVITY OUT EAST ACROSS THE PLAINS. THE PRIMARY THREATS FROM STORMS TODAY WILL BE HEAVY RAINFALL...WIND GUSTS TO AROUND 40 MPH...LOCAL PEA SIZE HAIL...AND LIGHTNING. HOWEVER...ONE OR TWO STORMS COULD BECOME SEVERE...PRODUCING HAIL UP TO 1 INCH IN DIAMETER. TONIGHT...SCATTERED THUNDERSTORMS WILL CONTINUE ACROSS THE MOUNTAINS...HIGH VALLEYS...AND ADJACENT PLAINS DURING THE EARLY EVENING HOURS...AND THEN DIE DOWN BY AROUND 9 PM. THE PRIMARY THREATS WILL BE THE SAME AS IN THE AFTERNOON. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE ANTICIPATED DURING THE PERIOD. THE PRIMARY METEOROLOGICAL THREATS FROM THESE STORMS WILL BE LIGHTNING...GUSTY WINDS...HEAVY RAIN AND POSSIBLY SOME SMALL STREAM FLOODING. IN ADDITION...ONE OR TWO STORMS COULD BE SEVERE ON ANY GIVEN DAY(ESPECIALLY FROM LATER SUNDAY INTO NEXT THURSDAY)...WHICH WILL BE CAPABLE OF PRODUCING WIND GUSTS AROUND 60 MPH AND HAIL AROUND 1 INCH IN DIAMETER. .SPOTTER INFORMATION STATEMENT... WEATHER CONDITIONS THAT MEET REPORTING CRITERIA FOR SPOTTERS WILL BE POSSIBLE AFTER NOON TODAY...MAINLY FROM THE I-25 CORRIDOR WESTWARD.
The Pueblo radar (KPUX), 70 km away, was scanning. The volume nearest the first event began at 21:46 UTC.
1 flash flood. Local standard time, as filed.
Two and one half feet of water covered a low spot on Mesa Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2009Every state in 2009This day in weather historyWarnings in Colorado, May 2009
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: 170034.