Alert archive / Colorado / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 6, NWS Pueblo, CO
NWS Pueblo, CO issued this severe thunderstorm warning at Apr 21, 2007, 3:54 PM MDT for Baca County, Prowers County, Colorado. It was in force for 66 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 21, 2007, 3:54 PM MDT (21:54 UTC)
- Expired
- Apr 21, 2007, 5:00 PM MDT
- In force
- 66 min
- Issued by
- NWS Pueblo, CO
- Area
- Counties, with a storm outline in the text
Counties Baca County, CO, Prowers County, CO
The radar
The Pueblo radar (KPUX), 164 km from the middle of the area, began a volume at 21:53 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 21, 5:07 PM MDT | HAIL 0.25 | 5 W Granada, CO | |
| Apr 21, 5:07 PM MDT | HAIL 1 | 5 W Granada, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 21, 2:10 PM MDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Dodge City, (KDDC), launched 12:00Z, 9.9 hours before the alert went out and 233 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
- 303 J/kg
- Mixed-layer CIN
- -477 J/kg
- Mixed-layer LCL
- 881 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 242 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KPUB 212154 SVRPUB COC009-099-212300- /O.NEW.KPUB.SV.W.0006.070421T2154Z-070421T2300Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PUEBLO CO 354 PM MDT SAT APR 21 2007 THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL BACA COUNTY IN SOUTHEAST COLORADO... PROWERS COUNTY IN SOUTHEAST COLORADO... * UNTIL 500 PM MDT... * AT 349 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS CENTERED 6 MILES NORTHWEST OF SPRINGFIELD...OR 35 MILES WEST OF THE SAUNDERS ELEVATOR...AND WAS MOVING TOWARD THE NORTHEAST AT 60 MPH. * LOCATIONS IMPACTED INCLUDE... GRANADA. HOLLY. HARTMAN. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. THIS THUNDERSTORM COULD FURTHER INTENSIFY AND PRODUCE A TORNADO WITH LITTLE WARNING. GET IN A STURDY STRUCTURE AWAY FROM WINDOWS. AN INTERIOR ROOM ON THE LOWEST FLOOR...OR A BASEMENT CAN OFFER THE BEST PROTECTION. IF POSSIBLE...WITHOUT RISKING YOUR SAFETY...PROTECT PROPERTY BEFORE THE WEATHER HITS. GET IN A STURDY STRUCTURE AND AWAY FROM WINDOWS. AN INTERIOR ROOM ON THE LOWEST FLOOR...OR A BASEMENT CAN OFFER THE BEST PROTECTION. LAT...LON 3749 10280 3741 10259 3808 10202 3822 10254 $$
2 follow-up statements
000 WWUS55 KPUB 212210 SVSPUB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE PUEBLO CO 410 PM MDT SAT APR 21 2007 COC009-099-212300- /O.CON.KPUB.SV.W.0006.000000T0000Z-070421T2300Z/ BACA CO-PROWERS CO- 410 PM MDT SAT APR 21 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM MDT FOR PROWERS AND NORTH CENTRAL BACA COUNTIES... AT 406 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS CENTERED 25 MILES SOUTH OF LAMAR...AND WAS MOVING TOWARD THE NORTH AT 60 MPH. LOCATIONS IMPACTED INCLUDE... LAMAR. GRANADA. HOLLY. BRISTOL. HARTMAN. LAT...LON 3762 10273 3756 10251 3808 10202 3828 10270 $$
000 WWUS55 KPUB 212224 SVSPUB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE PUEBLO CO 424 PM MDT SAT APR 21 2007 COC009-212234- /O.CAN.KPUB.SV.W.0006.000000T0000Z-070421T2300Z/ BACA CO- 424 PM MDT SAT APR 21 2007 ...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR BACA COUNTY... THE IMMEDIATE THREAT OF SEVERE WEATHER HAS ENDED. HAZARDOUS LIGHTNING MAY STILL BE IN THE AREA. LAT...LON 3764 10272 3765 10243 3808 10202 3828 10270 $$ COC099-212300- /O.CON.KPUB.SV.W.0006.000000T0000Z-070421T2300Z/ PROWERS CO- 424 PM MDT SAT APR 21 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM MDT FOR PROWERS COUNTY... AT 423 PM MDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS CENTERED 13 MILES SOUTHEAST OF LAMAR...AND WAS MOVING TOWARD THE NORTH AT 60 MPH. LOCATIONS IMPACTED INCLUDE... LAMAR. GRANADA. HOLLY. BRISTOL. HARTMAN. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. THIS IS A DANGEROUS THUNDERSTORM WHICH COULD INTENSIFY QUICKLY AND PRODUCE A TORNADO WITH LITTLE WARNING. GET IN A STURDY STRUCTURE AWAY FROM WINDOWS. AN INTERIOR ROOM ON THE LOWEST FLOOR...OR A BASEMENT CAN OFFER THE BEST PROTECTION. LAT...LON 3764 10272 3765 10243 3808 10202 3828 10270 $$
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Apr 21, 3:21 PM MDT, 33 minutes earlier.
Area forecast discussion, Apr 21, 3:21 PM MDT, 33 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PUEBLO CO 321 PM MDT SAT APR 21 2007 .SHORT TERM... (TONIGHT AND SUNDAY) ...SEVERE THUNDERSTORMS LIKELY THIS AFTERNOON AND EVENING... CURRENTLY...VERY DYNAMIC WX PATTERN THIS AFTERNOON AND EVENING. VORTMAXX CURRENTLY IN W NM MOVG ENE TOWARDS SE CO. SFC LOW SPINNING UP OVER EC CO...CURRENTLY LOCATED VCNTY LHX. DRYLINE EXTENDS S OF THIS LOW INTO EXTRM NE NM. BEHIND THE DRYLINE...WINDS DOWN TOWARD TAD G45 MPH FROM THE SW...WHILE AHEAD OF DRYLINE...WINDS S AT 20-30MPH WITH 50 DEWPTS. TO THE N OF THE SFC LOW...ALONG PALMER DVD...AN OCCLUSION EXIST WITH COOLER AIR AND EASTERLY WINDS. THIS AFTERNOON THROUGH EVENING...SFC LOW TO INTENSIFY AT RATES OF -1 MB/HR LATE THIS AFTERNOON INTO EARLY EVENING. CYCLOGENSIS WILL SET UP EXCELLENT LLVL SHEAR FAVORABLE FOR TORNADIC SUPERCELLS ACROSS THE E PLAINS OF CO. A TOR WATCH HAS ALREADY BEEN ISSUED ACROSS FAR NE CO AND EXPECT ANOTHER ONE ACROSS THE E PLAINS OF CO BY LATER THIS AFTERNOON. GREATEST THREAT OF TORS WILL BE E OF A LINE FROM EXTRM NE EL PASO COUNTY S INTO C LAS ANIMAS COUNTY. THREAT OF SVR WILL LAST INTO THIS EVENING AS SFC LOW MOVES E. BY LATER THIS EVENING...WRAPAROUND PRECIP WILL MOVE INTO THE PALMER DVD REGION...AND HAVE LIKELY POPS THIS AREA. BY LATER TONIGHT...MAY SEE SOME WET SNOW ON THE TOP OF THE PALMER DVD. BY TOMORROW...SYSTEM WILL BE OUT OF REGION....AND IT WILL BE A PRETTY NICE DAY. TEMPS SHOULD BE IN THE 70S...AND EXCEPT FOR SOME EARLY SHOWERS OVER THE FAR E...IT SHOULD BE DRY. /HODANISH .LONG TERM... (SUNDAY NIGHT THROUGH SATURDAY) ANOTHER ROUND OF ACTIVE METEOROLOGICAL DAYS ARE ON TAP FOR CWFA FOR THE LONG TERM WITH INITIAL METEOROLOGICAL CONCERNS BEING NEXT ROUND OF POTENTIALLY SEVERE WEATHER FROM MONDAY INTO MONDAY NIGHT AND THEN IMPACT CLOSED UPPER LOW WILL HAVE ON REGION FROM MONDAY NIGHT INTO WEDNESDAY MORNING. LATEST LONGER TERM MODELS SUGGEST THAT BRIEF UPPER RIDGING OVER THE CWFA SUNDAY NIGHT TO GIVE WAY TO INCREASING SOUTHWEST TO SOUTHERLY FLOW ALOFT FROM MONDAY INTO MONDAY NIGHT AS CLOSED UPPER LOW BECOMES CENTERED OVER NORTHWEST NEW MEXICO BY 12Z TUESDAY. THIS CLOSED UPPER LOW IS THEN EXPECTED TO PUSH INTO NORTHEAST NEW MEXICO BY 18Z TUESDAY AND THEN ACROSS SOUTHEAST COLORADO DURING TUESDAY AFTERNOON. SYSTEM THEN SHIFTS TO FAR WEST-CENTRAL KANSAS BY 06Z WEDNESDAY BEFORE MOVING OFF INTO MISSOURI BY 00Z THURSDAY. ANOTHER BRIEF UPPER RIDGE THEN SETS UP OVER REGION FROM LATER WEDNESDAY INTO THURSDAY BEFORE NEXT UPPER DISTURBANCE MOVES ACROSS CWFA FROM LATER THURSDAY INTO FRIDAY. MORE SUBSTANTIAL UPPER RIDGE IS THEN PROGGED TO DEVELOP OVER COLORADO ON SATURDAY. SO...FOR SENSIBLE WEATHER...EXPECT THAT ANOTHER ROUND OF STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE...ESPECIALLY OVER PORTIONS OF EL PASO...PUEBLO AND TELLER COUNTIES AS WELL AS THE EASTERN PLAINS FROM MONDAY INTO MONDAY NIGHT AND AGAIN POSSIBLY ON TUESDAY. IT STILL APPEARS THAT THE HIGHEST POTENTIAL FOR WIDESPREAD PRECIPITATION SHOULD BE NOTED FROM MONDAY NIGHT INTO EARLY WEDNESDAY MORNING AND HAVE CONTINUED TO DEPICT THIS SCENARIO IN GRIDS/ZONES. ALSO...STRONG NORTH TO NORTHEAST WINDS SHOULD BE ON TAP FROM TUESDAY INTO WEDNESDAY MORNING. NEXT ROUND OF UNSETTLED CONDITIONS COULD BY SEEN OVER REGION FROM THURSDAY NIGHT INTO FRIDAY. FINALLY...COOLEST TEMPERATURES OF THE LONG TERM PROJECTED TO OCCUR ON TUESDAY...WHILE WARMEST TEMPERATURES SHOULD BE NOTED BY NEXT SATURDAY. && .PUB WATCHES/WARNINGS/ADVISORIES... NONE. &&
Hazardous weather outlook, Apr 21, 9:07 AM MDT, 6 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE PUEBLO CO 907 AM MDT SAT APR 21 2007 COZ058>089-093>099-221300- 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- 907 AM MDT SAT APR 21 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL...EAST CENTRAL...SOUTH CENTRAL AND SOUTHEAST COLORADO. .DAY ONE...TODAY AND TONIGHT SEVERE THUNDERSTORMS AND TORNADOES WILL BE POSSIBLE OVER THE SOUTHEAST PLAINS OF COLORADO THIS AFTERNOON AND EVENING. LATEST COMPUTER SIMULATIONS THIS MORNING ARE NOW INDICATING THAT THE SEVERE WEATHER HAS INCREASED OVER MANY AREAS OF THE SOUTHEAST PLAINS OF COLORADO. THE STORM SYSTEM IS NOW FORECAST TO MOVE IN A MORE NORTHEAST DIRECTION AND IS FORECAST TO MOVE IN AT A SLOWER SPEED. THIS WILL ALLOW VERY UNSTABLE AIR TO MOVE OVER MOST OF THE PLAINS OF SOUTHEAST COLORADO. ALTHOUGH ALL OF THE PLAINS MAY SEE SEVERE WEATHER TODAY...THE GREATEST THREAT WILL BE EAST OF A LINE FROM CALHAN...TO ROCKY FORD...TO KIM. THE COMBINATION OF THE UNSTABLE AIR AT THE SURFACE AND STRONG WIND SHEAR OVERHEAD WILL ALLOW SUPERCELL THUNDERSTORMS TO DEVELOP THIS AFTERNOON AND EVENING OVER THE PLAINS. RESIDENTS OF SOUTHEAST COLORADO SHOULD BE ON THE ALERT FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING. OVER THE HIGHER ELEVATIONS OF THE MOUNTAINS...MAINLY ABOVE 10000 FEET...2 TO 4 INCHES OF SNOW WILL BE POSSIBLE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY A FEW THUNDERSTORMS WILL BE POSSIBLE SUNDAY AFTERNOON AND EVENING OVER PORTIONS OF THE CENTRAL MOUNTAINS. MONDAY AFTERNOON AND EVENING THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA. THE MAIN THREATS FROM THUNDERSTORMS WILL BE CLOUD TO GROUND LIGHTNING...GUSTY WINDS AND SMALL HAIL. MONDAY NIGHT THERE WILL BE A CHANCE FOR ACCUMULATING SNOW OVER THE SOUTHWEST AND CENTRAL MOUNTAINS. TUESDAY THROUGH TUESDAY NIGHT THERE WILL BE THE POTENTIAL FOR ACCUMULATING SNOW OVER ALL OF THE MOUNTAINS...WITH SOME HEAVY RAIN POSSIBLE AT THE LOWER ELEVATIONS. .SPOTTER INFORMATION STATEMENT... WEATHER CONDITIONS THAT MEET REPORTING CRITERIA FOR SPOTTERS WILL BE POSSIBLE OVER ALL OF THE EASTERN PLAINS OF SOUTHEAST COLORADO AFTER 2 PM TODAY.
The office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 4:41 PM MDT | Tornado Warning | PUB | Kiowa, Prowers | 64 min |
| Apr 21, 4:55 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 65 min |
| Apr 21, 5:30 PM MDT | Tornado Warning | PUB | Baca | 60 min |
| Apr 21, 5:44 PM MDT | Tornado Warning | PUB | Kiowa, Prowers | 61 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2007Every severe thunderstorm warning in 2007
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.