Alert archive / Colorado / Special Weather Statements in 2021

Special Weather Statement, NWS Pueblo, CO

July 24, 2021Alamosa County, Colorado

NWS Pueblo, CO issued this special weather statement at Jul 24, 2021, 6:39 PM MDT for Alamosa County, Colorado. It was in force for 51 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
Jul 24, 2021, 6:39 PM MDT (00:39 UTC)
Expired
Jul 24, 2021, 7:30 PM MDT
In force
51 min
Issued by
NWS Pueblo, CO

County Alamosa County, CO

The radar

The Pueblo radar (KPUX), 176 km from the middle of the area, began a volume at 00:42 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, 0.7 hours before the alert went out and 266 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, Grand Junction, CO at 00:00Z on 2021-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 50 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, Grand Junction, CO at 00:00Z on 2021-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.1939Sfc1 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
50 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
2806 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

053 
WWUS85 KPUB 250039
SPSPUB

Special Weather Statement
National Weather Service Pueblo CO
639 PM MDT Sat Jul 24 2021
 
COZ069-070-250130-
Alamosa  Vicinity/Central San Luis Valley Below 8500 Ft CO-
Del Norte Vicinity/Northern San Luis Valley Below 8500 Ft CO-
639 PM MDT Sat Jul 24 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ALAMOSA...
NORTHEASTERN RIO GRANDE AND SOUTH CENTRAL SAGUACHE COUNTIES UNTIL 730
PM MDT...

At 638 PM MDT, Doppler radar was tracking a heavy rain producing 
thunderstorm near Center, or 21 miles northwest of Alamosa, moving 
northwest at 15 mph.

Winds in excess of 40 mph and torrential rainfall will be possible 
with this storm.  Rainfall rates of up to 2 inches per hour will be 
possible with this storm.  Localized minor flooding will be possible 
on rural roads between Hooper and Center with this storm.

Locations impacted include...
Center and Hooper. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3778 10583 3762 10592 3772 10624 3794 10612
TIME...MOT...LOC 0038Z 113DEG 11KT 3776 10604 

$$

KT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 8:49 PM MDTFlash Flood WarningPUBCuster, Saguache92 min
Jul 25, 12:24 PM MDTSpecial Weather StatementPUBHuerfano21 min
Jul 25, 12:31 PM MDTFlash Flood Warning Considerable damage threatPUBCostilla, Huerfano3 hr
Jul 25, 1:09 PM MDTFlash Flood Warning Considerable damage threatPUBHuerfano3 hr
Jul 25, 2:29 PM MDTSpecial Weather StatementPUBKiowa46 min
Jul 25, 2:58 PM MDTSevere Thunderstorm WarningPUBKiowa62 min
Jul 25, 3:21 PM MDTSpecial Weather StatementPUBKiowa39 min
Jul 25, 3:37 PM MDTSevere Thunderstorm WarningPUBKiowa68 min
Jul 25, 4:38 PM MDTSpecial Weather StatementPUBEl Paso52 min
Jul 25, 4:45 PM MDTSpecial Weather StatementPUBChaffee60 min
Jul 25, 4:48 PM MDTSpecial Weather StatementPUBBent, Kiowa57 min
Jul 25, 4:49 PM MDTSpecial Weather StatementPUBFremont56 min
Jul 25, 4:51 PM MDTSpecial Weather StatementPUBTeller39 min
Jul 25, 4:53 PM MDTSpecial Weather StatementPUBDouglas37 min
Jul 25, 5:05 PM MDTSpecial Weather StatementPUBCrowley, Otero, Pueblo40 min
Jul 25, 5:07 PM MDTSpecial Weather StatementPUBEl Paso53 min
Jul 25, 5:09 PM MDTSpecial Weather StatementPUBFremont51 min
Jul 25, 5:15 PM MDTSpecial Weather StatementPUBBaca30 min
Jul 25, 5:48 PM MDTSevere Thunderstorm WarningPUBProwers55 min
Jul 25, 5:55 PM MDTFlash Flood Warning Considerable damage threatPUBFremont, Saguache3 hr
Jul 25, 5:58 PM MDTSpecial Weather StatementPUBBent, Otero, Pueblo47 min

Nearby

Special Weather Statements in Colorado, 2021Every special weather statement 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.