Alert archive / Colorado / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 264, NWS Pueblo, CO

August 20, 2016Custer County, Huerfano County, Colorado

NWS Pueblo, CO issued this severe thunderstorm warning at Aug 20, 2016, 6:05 PM MDT for Custer County, Huerfano County, Colorado. It was in force for 40 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: Aug 20, 2016, 6:05 PM MDT (00:05 UTC)
Expired: Aug 20, 2016, 6:45 PM MDT
In force: 40 min
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Custer County, CO, Huerfano County, CO

The radar

The Pueblo radar (KPUX), 112 km from the middle of the area, began a volume at 00:07 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
Aug 20, 6:35 PM MDT	HAIL 1	5 Sw Rosita, 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 (KDEN), launched 00:00Z, 0.1 hours before the alert went out and 274 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2401 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 237 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

652 
WUUS55 KPUB 210005
SVRPUB
COC027-055-210045-
/O.NEW.KPUB.SV.W.0264.160821T0005Z-160821T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
605 PM MDT SAT AUG 20 2016

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CUSTER COUNTY IN SOUTHEASTERN COLORADO...
  NORTH CENTRAL HUERFANO COUNTY IN SOUTHEASTERN COLORADO...

* UNTIL 645 PM MDT

* AT 605 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 11 MILES
  NORTHEAST OF CRESTONE PEAK...OR 46 MILES WEST OF PUEBLO...MOVING
  EAST AT 15 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  SILVER CLIFF...WESTCLIFFE AND ROSITA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3799 10553 3818 10552 3821 10507 3783 10510
TIME...MOT...LOC 0005Z 270DEG 12KT 3808 10543 

HAIL...1.00IN
WIND...60MPH
 
$$

KAM

3 follow-up statements

054 
WWUS55 KPUB 210020
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
620 PM MDT SAT AUG 20 2016

COC027-055-210045-
/O.CON.KPUB.SV.W.0264.000000T0000Z-160821T0045Z/
CUSTER CO-HUERFANO CO-
620 PM MDT SAT AUG 20 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR SOUTHEASTERN CUSTER AND NORTH CENTRAL HUERFANO COUNTIES...

AT 620 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 10 MILES NORTHEAST
OF CRESTONE PEAK...OR 46 MILES WEST OF PUEBLO...MOVING SOUTH AT 15
MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
SILVER CLIFF...WESTCLIFFE AND ROSITA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURE'S LEADING
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3798 10549 3813 10551 3819 10507 3783 10510
TIME...MOT...LOC 0020Z 001DEG 15KT 3805 10542 

HAIL...1.00IN
WIND...60MPH
 
$$

KAM

299 
WWUS55 KPUB 210030
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
630 PM MDT SAT AUG 20 2016

COC027-055-210045-
/O.CON.KPUB.SV.W.0264.000000T0000Z-160821T0045Z/
CUSTER CO-HUERFANO CO-
630 PM MDT SAT AUG 20 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR SOUTHEASTERN CUSTER AND NORTH CENTRAL HUERFANO COUNTIES...

AT 629 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 11 MILES EAST OF
CRESTONE PEAK...OR 44 MILES SOUTHWEST OF PUEBLO...MOVING SOUTHEAST AT
25 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...TRAINED WEATHER SPOTTERS. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

LOCATIONS IMPACTED INCLUDE...
SILVER CLIFF AND ROSITA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURE'S LEADING
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3802 10549 3814 10545 3814 10541 3808 10508
      3783 10510 3798 10549
TIME...MOT...LOC 0029Z 332DEG 23KT 3801 10538 

HAIL...1.00IN
WIND...<50MPH
 
$$

KAM

333 
WWUS55 KPUB 210041
SVSPUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
641 PM MDT SAT AUG 20 2016

COC027-055-210050-
/O.EXP.KPUB.SV.W.0264.000000T0000Z-160821T0045Z/
CUSTER CO-HUERFANO CO-
641 PM MDT SAT AUG 20 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CUSTER AND NORTH
CENTRAL HUERFANO COUNTIES WILL EXPIRE AT 645 PM MDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER SMALL HAIL
AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3802 10549 3814 10545 3814 10541 3808 10508
      3783 10510 3798 10549
TIME...MOT...LOC 0040Z 270DEG 12KT 3801 10538 

$$

KAM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 6:00 PM MDT	Flash Flood Warning	PUB	Custer, Fremont, Saguache	3 hr
Aug 20, 6:44 PM MDT	Special Weather Statement	PUB	Saguache	46 min
Aug 20, 7:20 PM MDT	Special Weather Statement	PUB	Huerfano	40 min
Aug 21, 5:46 PM MDT	Special Weather Statement	PUB	Chaffee	29 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2016 Every severe thunderstorm warning in 2016

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.