Alert archive / Colorado / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 101, NWS Pueblo, CO

July 21, 20114 counties in Colorado

NWS Pueblo, CO issued this severe thunderstorm warning at Jul 21, 2011, 5:16 PM MDT for 4 counties in Colorado. It was in force for 59 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
Jul 21, 2011, 5:16 PM MDT (23:16 UTC)
Expired
Jul 21, 2011, 6:15 PM MDT
In force
59 min
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Bent County, CO, Kiowa County, CO, Otero County, CO, Prowers County, CO

The radar

The Pueblo radar (KPUX), 94 km from the middle of the area, began a volume at 23:19 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

TimeReportWhereRemark
Jul 21, 5:17 PM MDTTSTM WND GST 651 E La Junta, CO
Jul 21, 5:24 PM MDTTSTM WND GST 60La Junta, CO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.3 hours before the alert went out and 191 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.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2011-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 269 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2011-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
269 J/kg
Mixed-layer CIN
-186 J/kg
Mixed-layer LCL
1725 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
4 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

247 
WUUS55 KPUB 212316
SVRPUB
COC011-061-089-099-220015-
/O.NEW.KPUB.SV.W.0101.110721T2316Z-110722T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
516 PM MDT THU JUL 21 2011

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BENT COUNTY IN SOUTHEAST COLORADO...
  SOUTHERN KIOWA COUNTY IN SOUTHEAST COLORADO...
  NORTHEASTERN OTERO COUNTY IN SOUTHEAST COLORADO...
  NORTHWESTERN PROWERS COUNTY IN SOUTHEAST COLORADO...

* UNTIL 615 PM MDT

* AT 514 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES SOUTH OF LAS ANIMAS...OR
  18 MILES EAST OF LA JUNTA...AND MOVING NORTHEAST AT 35 MPH. PENNY
  SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  LAS ANIMAS...JOHN MARTIN RESERVOIR...HASTY...MCCLAVE...WILEY...FORT
  LYON AND CADDOA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3844 10322 3822 10256 3776 10323 3791 10364
TIME...MOT...LOC 2316Z 213DEG 29KT 3795 10320
WIND...HAIL 60MPH 0.75IN

$$
SR
4 follow-up statements
848 
WWUS55 KPUB 212328
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
528 PM MDT THU JUL 21 2011

COC011-061-089-099-220015-
/O.CON.KPUB.SV.W.0101.000000T0000Z-110722T0015Z/
OTERO CO-PROWERS CO-BENT CO-KIOWA CO-
528 PM MDT THU JUL 21 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
KIOWA...NORTHWESTERN BENT...NORTHWESTERN PROWERS AND NORTHEASTERN
OTERO COUNTIES UNTIL 615 PM MDT...

AT 523 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 65 MPH.  THIS
STORM WAS LOCATED 6 MILES SOUTHEAST OF LAS ANIMAS...OR 21 MILES EAST
OF LA JUNTA...MOVING NORTHEAST AT 35 MPH. PENNY SIZE HAIL MAY ALSO
ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  JOHN MARTIN RESERVOIR...HASTY...MCCLAVE...WILEY...FORT LYON AND
  CADDOA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3777 10325 3793 10362 3844 10322 3822 10256
TIME...MOT...LOC 2328Z 213DEG 29KT 3803 10313
WIND...HAIL 70MPH 0.75IN

$$
SR
929 
WWUS55 KPUB 212339
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
539 PM MDT THU JUL 21 2011

COC011-061-089-099-220015-
/O.CON.KPUB.SV.W.0101.000000T0000Z-110722T0015Z/
OTERO CO-PROWERS CO-BENT CO-KIOWA CO-
539 PM MDT THU JUL 21 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
KIOWA...NORTHERN BENT...NORTHWESTERN PROWERS AND NORTHEASTERN OTERO
COUNTIES UNTIL 615 PM MDT...

AT 537 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED NEAR JOHN MARTIN RESERVOIR...OR 25
MILES WEST OF LAMAR...MOVING NORTHEAST AT 35 MPH. PENNY SIZE HAIL MAY
ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  HASTY...MCCLAVE...WILEY AND CADDOA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3782 10322 3798 10358 3844 10322 3822 10256
TIME...MOT...LOC 2339Z 213DEG 29KT 3810 10307
WIND...HAIL 60MPH 0.75IN

$$
SR
012 
WWUS55 KPUB 212352
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
552 PM MDT THU JUL 21 2011

COC011-061-089-099-220015-
/O.CON.KPUB.SV.W.0101.000000T0000Z-110722T0015Z/
OTERO CO-PROWERS CO-BENT CO-KIOWA CO-
552 PM MDT THU JUL 21 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
KIOWA...NORTHERN BENT...NORTHWESTERN PROWERS AND NORTHEASTERN OTERO
COUNTIES UNTIL 615 PM MDT...

AT 551 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED 6 MILES NORTHWEST OF HASTY...OR 22
MILES WEST OF LAMAR...MOVING NORTHEAST AT 35 MPH. PENNY SIZE HAIL MAY
ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  MCCLAVE AND WILEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3796 10311 3810 10345 3844 10322 3822 10256
TIME...MOT...LOC 2352Z 213DEG 29KT 3819 10300
WIND...HAIL 60MPH 0.75IN

$$
SR
010 
WWUS55 KPUB 220011
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
611 PM MDT THU JUL 21 2011

COC011-061-089-099-220021-
/O.EXP.KPUB.SV.W.0101.000000T0000Z-110722T0015Z/
OTERO CO-PROWERS CO-BENT CO-KIOWA CO-
611 PM MDT THU JUL 21 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN KIOWA...NORTHERN
BENT...NORTHWESTERN PROWERS AND NORTHEASTERN OTERO COUNTIES WILL
EXPIRE AT 615 PM MDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
NORTHEAST BENT...EASTERN KIOWA...AND NORTHWEST PROWERS COUNTIES 
UNTIL 645 PM MDT.

LAT...LON 3796 10311 3810 10345 3844 10322 3822 10256
TIME...MOT...LOC 0011Z 213DEG 29KT 3832 10289

$$

The office that day

Everything else NWS Pueblo, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 21, 3:49 PM MDTSevere Thunderstorm WarningPUBBent, Las Animas, Otero26 min
Jul 21, 4:27 PM MDTAreal Flood AdvisoryPUBLas Animas, Otero81 min
Jul 21, 5:06 PM MDTAreal Flood AdvisoryPUBBent, Otero79 min
Jul 21, 5:58 PM MDTSevere Thunderstorm WarningPUBBent, Kiowa, Prowers26 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2011Every severe thunderstorm warning in 2011

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.