Alert archive / Colorado / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 73, NWS Pueblo, CO

July 6, 2011Bent County, Prowers County, Colorado

NWS Pueblo, CO issued this severe thunderstorm warning at Jul 6, 2011, 8:49 PM MDT for Bent County, Prowers County, Colorado. It was in force for 56 min. 4 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 6, 2011, 8:49 PM MDT (02:49 UTC)
Expired
Jul 6, 2011, 9:45 PM MDT
In force
56 min
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Bent County, CO, Prowers County, CO

The radar

The Pueblo radar (KPUX), 146 km from the middle of the area, began a volume at 02:49 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 6, 8:49 PM MDTTSTM WND GST 664 W Lamar, CO
Jul 6, 9:08 PM MDTTSTM WND DMG6 W Lamar, COROOF BLOWN OFF BARN 1 MILE WEST OF BENT/PROWERS COUNTY LINE ON HIGHWAY 50. POWER OUT IN THE JOHN MARTIN RESERVOIR AREA.
Jul 6, 9:30 PM MDTTSTM WND DMG10 Ne Lamar, COABANDON...UNANCHORED MOBILE HOME FLIPPED ON ROOF BY STRAIGHT LINE WINDS AT CR13 BETWEEN HIGHWAY 50 AND HIGHWAY 96. ESTIMATED 3-4 COTTONWOOD TREES DOWN.
Jul 6, 9:30 PM MDTTSTM WND DMG3 Ne Lamar, COPUBLIC REPORTED BARN DESTROYED 2 MILES NORTH AND 2 MILES EAST OF LAMAR. TIME ESTIMATED.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 6, 2:56 PM MDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 2.8 hours before the alert went out and 202 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 00:00Z on 2011-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1275 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 00:00Z on 2011-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
1275 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
1346 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
125 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.2

Open this sounding in Storm Lab

The text

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

768 
WUUS55 KPUB 070249
SVRPUB
COC011-099-070345-
/O.NEW.KPUB.SV.W.0073.110707T0249Z-110707T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
849 PM MDT WED JUL 6 2011

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN BENT COUNTY IN SOUTHEAST COLORADO...
  NORTHERN PROWERS COUNTY IN SOUTHEAST COLORADO...

* UNTIL 945 PM MDT

* AT 844 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES
  SOUTHEAST OF MCCLAVE...OR 9 MILES SOUTHWEST OF LAMAR...AND MOVING
  NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LAMAR...WILEY...GRANADA...BRISTOL...HARTMAN AND HOLLY.

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 3825 10278 3826 10205 3802 10205 3787 10279
      3810 10293
TIME...MOT...LOC 0249Z 237DEG 20KT 3804 10274
WIND...HAIL 60MPH 1.00IN

$$
3 follow-up statements
647 
WWUS55 KPUB 070306
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
906 PM MDT WED JUL 6 2011

COC011-099-070345-
/O.CON.KPUB.SV.W.0073.000000T0000Z-110707T0345Z/
PROWERS CO-BENT CO-
906 PM MDT WED JUL 6 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
BENT AND NORTHERN PROWERS COUNTIES UNTIL 945 PM MDT...

AT 858 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
LAMAR...MOVING NORTHEAST AT 25 MPH.

IN ADDITION...AT 849 PM MDT...A 66 MPH WIND GUST WAS REPORTED AT THE 
LAMAR AUTOMATED WEATHER OBSERVATION STATION...4 MILES WEST OF LAMAR.

LOCATIONS IMPACTED INCLUDE...
  LAMAR...GRANADA...BRISTOL...HARTMAN AND HOLLY.

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.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT
WEDNESDAY EVENING FOR SOUTHEASTERN COLORADO.

LAT...LON 3826 10205 3802 10205 3789 10276 3811 10286
      3825 10268
TIME...MOT...LOC 0303Z 237DEG 20KT 3808 10266
WIND...HAIL 60MPH 1.00IN

$$
679 
WWUS55 KPUB 070321
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
921 PM MDT WED JUL 6 2011

COC011-070330-
/O.CAN.KPUB.SV.W.0073.000000T0000Z-110707T0345Z/
BENT CO-
921 PM MDT WED JUL 6 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BENT COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA...INTO PROWERS COUNTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT
WEDNESDAY EVENING FOR SOUTHEASTERN COLORADO.

LAT...LON 3802 10205 3792 10257 3811 10273 3825 10268
      3826 10205
TIME...MOT...LOC 0320Z 237DEG 20KT 3813 10256

$$

COC099-070345-
/O.CON.KPUB.SV.W.0073.000000T0000Z-110707T0345Z/
PROWERS CO-
921 PM MDT WED JUL 6 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
PROWERS COUNTY UNTIL 945 PM MDT...

AT 917 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
LAMAR...MOVING NORTHEAST AT 25 MPH.

IN ADDITION...AT 849 PM MDT...A 66 MPH WIND GUST WAS REPORTED AT THE 
LAMAR AUTOMATED WEATHER OBSERVATION STATION...4 MILES WEST OF LAMAR.

LOCATIONS IMPACTED INCLUDE...
  GRANADA...BRISTOL...HARTMAN AND HOLLY.

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.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT
WEDNESDAY EVENING FOR SOUTHEASTERN COLORADO.

LAT...LON 3802 10205 3792 10257 3811 10273 3825 10268
      3826 10205
TIME...MOT...LOC 0320Z 237DEG 20KT 3813 10256
WIND...HAIL 60MPH 1.00IN

$$
603 
WWUS55 KPUB 070334
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
934 PM MDT WED JUL 6 2011

COC099-070345-
/O.CON.KPUB.SV.W.0073.000000T0000Z-110707T0345Z/
PROWERS CO-
934 PM MDT WED JUL 6 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
PROWERS COUNTY UNTIL 945 PM MDT...

AT 930 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES
NORTHEAST OF LAMAR...MOVING NORTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  GRANADA...BRISTOL...HARTMAN AND HOLLY.

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.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT
WEDNESDAY EVENING FOR SOUTHEASTERN COLORADO.

LAT...LON 3802 10205 3796 10253 3809 10266 3825 10263
      3826 10205
TIME...MOT...LOC 0334Z 237DEG 20KT 3817 10248
WIND...HAIL 60MPH 1.00IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 9:43 PM MDTSevere Thunderstorm WarningPUBKiowa, Prowers37 min
Jul 7, 2:16 PM MDTSevere Thunderstorm WarningPUBEl Paso, Teller34 min
Jul 7, 2:17 PM MDTSevere Thunderstorm WarningPUBHuerfano, Las Animas25 min
Jul 7, 2:29 PM MDTFlash Flood WarningPUBLas Animas89 min
Jul 7, 2:49 PM MDTSevere Thunderstorm WarningPUBHuerfano56 min
Jul 7, 5:13 PM MDTSevere Thunderstorm WarningPUBPueblo62 min
Jul 7, 5:23 PM MDTAreal Flood AdvisoryPUBLas Animas, Otero102 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.