Alert archive / Colorado / Snow Squall Warnings in 2021

Snow Squall Warning 2, NWS Pueblo, CO

May 11, 2021El Paso County, Colorado

NWS Pueblo, CO issued this snow squall warning at May 11, 2021, 2:44 PM MDT for El Paso County, Colorado. It was in force for 31 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
May 11, 2021, 2:44 PM MDT (20:44 UTC)
Expired
May 11, 2021, 3:15 PM MDT
In force
31 min
Issued by
NWS Pueblo, CO
Area
Storm-based polygon

County El Paso County, CO

The radar

The Denver radar (KFTG), 85 km from the middle of the area, began a volume at 20:47 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

Denver, CO (KDNR), launched 12:00Z, 8.7 hours before the alert went out and 163 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 2021-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 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 2021-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
530 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

117 
WWUS55 KPUB 112045
SQWPUB

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Pueblo CO
244 PM MDT Tue May 11 2021

COC041-112115-
/O.NEW.KPUB.SQ.W.0002.210511T2044Z-210511T2115Z/
El Paso CO-
244 PM MDT Tue May 11 2021

The National Weather Service in Pueblo has issued a

* Snow Squall Warning for...
  Northwestern El Paso County in east central Colorado...

* Until 315 PM MDT.

* At 244 PM MDT, a dangerous snow squall was located near Gleneagle,
  or 17 miles north of Colorado Springs, moving east at 20 mph.

  HAZARD...Poor visibility in heavy snow.

  SOURCE...Radar indicated.

  IMPACT...Dangerous life-threatening travel.

* Web cameras were showing very heavy snow occurring across the 
  entire length of the I-25 Gap project

Locations impacted include...
Monument, Air Force Academy, Palmer Lake and Gleneagle. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider avoiding or delaying travel until the snow squall passes
your location. If you must travel, use extra caution and allow extra
time. Rapid changes in visibility and slick road conditions may lead
to accidents.

&&

LAT...LON 3899 10501 3913 10500 3912 10447 3903 10456
TIME...MOT...LOC 2044Z 265DEG 19KT 3908 10476 

$$

Hodanish

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 2:39 PM MDTSnow Squall WarningPUBEl Paso36 min

Nearby

Snow Squall Warnings in Colorado, 2021Every snow squall 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.