Alert archive / Colorado / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 49, NWS Pueblo, CO

June 20, 2011Kiowa County, Colorado

NWS Pueblo, CO issued this severe thunderstorm warning at Jun 20, 2011, 3:21 AM MDT for Kiowa County, Colorado. It was in force for 27 min. 1 report 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: Jun 20, 2011, 3:21 AM MDT (09:21 UTC)
Expired: Jun 20, 2011, 3:48 AM MDT
In force: 27 min
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Kiowa County, CO

The radar

The Pueblo radar (KPUX), 117 km from the middle of the area, began a volume at 09:22 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
Jun 20, 3:30 AM MDT	HAIL 1	10 S Eads, 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 00:00Z, 9.4 hours before the alert went out and 167 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 874 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1618 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 211 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

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

181 
WUUS55 KPUB 200921
SVRPUB
COC061-201015-
/O.NEW.KPUB.SV.W.0049.110620T0921Z-110620T1015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
321 AM MDT MON JUN 20 2011

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL KIOWA COUNTY IN SOUTHEAST COLORADO...

* UNTIL 415 AM MDT

* AT 318 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED 9 MILES WEST OF NEEGRONDA RESERVOIR...OR 22 MILES NORTHWEST
  OF LAMAR...AND MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NEEGRONDA RESERVOIR...SWEETWATER RESERVOIR AND EADS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 3826 10276 3827 10306 3862 10299 3861 10261
TIME...MOT...LOC 0921Z 210DEG 16KT 3832 10290
WIND...HAIL 60MPH 1.50IN

$$

2 follow-up statements

847 
WWUS55 KPUB 200936
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
336 AM MDT MON JUN 20 2011

COC061-201015-
/O.CON.KPUB.SV.W.0049.000000T0000Z-110620T1015Z/
KIOWA CO-
336 AM MDT MON JUN 20 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL KIOWA
COUNTY UNTIL 415 AM MDT...

AT 332 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR
SWEETWATER RESERVOIR...OR 20 MILES NORTHWEST OF LAMAR...MOVING
NORTHEAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  SWEETWATER RESERVOIR AND EADS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 3826 10276 3831 10301 3862 10299 3861 10261
TIME...MOT...LOC 0936Z 221DEG 15KT 3834 10277
WIND...HAIL 70MPH 1.00IN

$$

647 
WWUS55 KPUB 200948
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
348 AM MDT MON JUN 20 2011

COC061-200958-
/O.CAN.KPUB.SV.W.0049.000000T0000Z-110620T1015Z/
KIOWA CO-
348 AM MDT MON JUN 20 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL KIOWA COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA...HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE
STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3826 10276 3831 10301 3862 10299 3861 10261
TIME...MOT...LOC 0948Z 221DEG 15KT 3838 10273

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 2:35 AM MDT	Severe Thunderstorm Warning	PUB	Bent, Crowley, Kiowa, Otero	36 min
Jun 20, 4:31 AM MDT	Severe Thunderstorm Warning	PUB	Kiowa	25 min
Jun 20, 5:54 AM MDT	Severe Thunderstorm Warning	PUB	Kiowa	54 min
Jun 20, 7:17 AM MDT	Severe Thunderstorm Warning	PUB	Bent, Prowers	46 min
Jun 20, 7:31 AM MDT	Severe Thunderstorm Warning	PUB	Baca, Prowers	34 min
Jun 20, 2:37 PM MDT	Frost Advisory	PUB	Alamosa, Conejos, Costilla, Rio Grande, Saguache	17 hr

Nearby

Severe Thunderstorm Warnings in Colorado, 2011 Every 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.