Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 143, NWS Pueblo, CO

June 4, 2021Alamosa County, Colorado

NWS Pueblo, CO issued this severe thunderstorm warning at Jun 4, 2021, 7:30 PM MDT for Alamosa County, Colorado. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 4, 2021, 7:30 PM MDT (01:30 UTC)
Expired: Jun 4, 2021, 8:00 PM MDT
In force: 30 min
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

County Alamosa County, CO

The radar

The Pueblo radar (KPUX), 175 km from the middle of the area, began a volume at 01:30 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.

The nearest sounding before it

Grand Junction, CO (KGJT), launched 00:00Z, 1.5 hours before the alert went out and 280 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: 418 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 3790 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

467 
WUUS55 KPUB 050130
SVRPUB
COC003-050200-
/O.NEW.KPUB.SV.W.0143.210605T0130Z-210605T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pueblo CO
730 PM MDT Fri Jun 4 2021

The National Weather Service in Pueblo has issued a

* Severe Thunderstorm Warning for...
  Northwestern Alamosa County in southeastern Colorado...

* Until 800 PM MDT.

* At 730 PM MDT, a severe thunderstorm was located over Mosca, or 14
  miles north of Alamosa, moving south at 15 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Mosca.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3774 10599 3774 10580 3753 10569 3753 10603
TIME...MOT...LOC 0130Z 001DEG 15KT 3768 10590 

HAIL...0.88IN
WIND...60MPH
 
$$

KTS

2 follow-up statements

636 
WWUS55 KPUB 050148
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
748 PM MDT Fri Jun 4 2021

COC003-050200-
/O.CON.KPUB.SV.W.0143.000000T0000Z-210605T0200Z/
Alamosa CO-
748 PM MDT Fri Jun 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM MDT
FOR NORTHWESTERN ALAMOSA COUNTY...

At 748 PM MDT, a severe thunderstorm was located over Mosca, or 10
miles north of Alamosa, moving south at 15 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Mosca.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3771 10595 3771 10578 3762 10574 3753 10569
      3753 10599
TIME...MOT...LOC 0148Z 345DEG 11KT 3763 10587 

HAIL...0.88IN
WIND...60MPH
 
$$

KTS

697 
WWUS55 KPUB 050159
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
759 PM MDT Fri Jun 4 2021

COC003-050209-
/O.EXP.KPUB.SV.W.0143.000000T0000Z-210605T0200Z/
Alamosa CO-
759 PM MDT Fri Jun 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ALAMOSA COUNTY
WILL EXPIRE AT 800 PM MDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3771 10595 3771 10578 3762 10574 3753 10569
      3753 10599
TIME...MOT...LOC 0159Z 001DEG 15KT 3759 10587 

$$

KTS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 6:14 PM MDT	Severe Thunderstorm Warning	PUB	Saguache	31 min
Jun 4, 6:52 PM MDT	Special Weather Statement	PUB	Alamosa	38 min
Jun 4, 7:29 PM MDT	Special Weather Statement	PUB	Alamosa	31 min
Jun 4, 7:42 PM MDT	Special Weather Statement	PUB	Chaffee	33 min
Jun 4, 8:00 PM MDT	Special Weather Statement	PUB	Alamosa	30 min
Jun 4, 8:13 PM MDT	Special Weather Statement	PUB	Chaffee	32 min
Jun 4, 9:20 PM MDT	Special Weather Statement	PUB	Conejos	25 min
Jun 5, 1:05 PM MDT	Flash Flood Warning Considerable damage threat	PUB	Costilla, Huerfano	115 min
Jun 5, 2:44 PM MDT	Special Weather Statement	PUB	Alamosa	46 min
Jun 5, 4:18 PM MDT	Special Weather Statement	PUB	Teller	27 min
Jun 5, 4:20 PM MDT	Special Weather Statement	PUB	Conejos	25 min
Jun 5, 4:27 PM MDT	Special Weather Statement	PUB	Gunnison	18 min
Jun 5, 4:42 PM MDT	Special Weather Statement	PUB	Conejos	18 min
Jun 5, 4:48 PM MDT	Special Weather Statement	PUB	Teller	27 min
Jun 5, 5:14 PM MDT	Special Weather Statement	PUB	Fremont	31 min
Jun 5, 5:36 PM MDT	Special Weather Statement	PUB	Teller	9 min
Jun 5, 5:45 PM MDT	Special Weather Statement	PUB	Teller	30 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.