Alert archive / Colorado / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 4, NWS Grand Junction, CO

August 10, 2013Montezuma County, Colorado

NWS Grand Junction, CO issued this severe thunderstorm warning at Aug 10, 2013, 1:58 PM MDT for Montezuma County, Colorado. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 10, 2013, 1:58 PM MDT (19:58 UTC)
Expired
Aug 10, 2013, 2:45 PM MDT
In force
47 min
Issued by
NWS Grand Junction, CO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Montezuma County, CO

The radar

The Grand Junction radar (KGJX), 195 km from the middle of the area, began a volume at 19:59 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

Albuquerq/Krtlnd, NM (KABQ), launched 12:00Z, 8.0 hours before the alert went out and 311 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, Albuquerq/Krtlnd, NM at 12:00Z on 2013-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 83 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albuquerq/Krtlnd, NM at 12:00Z on 2013-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
83 J/kg
Mixed-layer CIN
-193 J/kg
Mixed-layer LCL
1470 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 1:48 PM MDTSpecial Weather StatementGJTMontezuma42 min
Aug 10, 2:05 PM MDTSevere Thunderstorm WarningGJTDolores, Montezuma40 min
Aug 10, 2:29 PM MDTSpecial Weather StatementGJTLa Plata46 min
Aug 10, 2:46 PM MDTSpecial Weather StatementGJTDolores, San Miguel59 min
Aug 10, 3:30 PM MDTSpecial Weather StatementGJTLa Plata45 min
Aug 10, 3:40 PM MDTSevere Thunderstorm WarningGJTArchuleta, Hinsdale, La Plata50 min
Aug 10, 3:48 PM MDTAreal Flood AdvisoryGJTSan Miguel3 hr
Aug 10, 3:59 PM MDTAreal Flood AdvisoryGJTArchuleta, Hinsdale3 hr
Aug 9, 6:05 PM MDTAreal Flood AdvisoryGJTUintah3 hr

Nearby

Severe Thunderstorm Warnings in Colorado, 2013Every severe thunderstorm warning in 2013

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.