Alert archive / Colorado / Severe Thunderstorm Watches in 2013

Severe Thunderstorm Watch 352

June 23, 201322 counties in Colorado

The Storm Prediction Center issued this severe thunderstorm watch at Jun 23, 2013, 4:40 PM MDT for 22 counties in Colorado. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 23, 2013, 4:40 PM MDT (22:40 UTC)
Expired
Jun 24, 2013, 12:00 AM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 22 counties

Adams County, CO, Arapahoe County, CO, Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Denver County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Otero County, CO, Phillips County, CO, Prowers County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO

The radar

The Denver radar (KFTG), 75 km from the middle of the area, began a volume at 22:41 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
20%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 23, 5:22 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe23 min
Jun 23, 5:46 PM MDTSevere Thunderstorm WarningPUBBaca44 min
Jun 23, 6:12 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe33 min
Jun 23, 6:26 PM MDTSevere Thunderstorm WarningPUBBaca49 min
Jun 23, 6:44 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe31 min
Jun 23, 6:45 PM MDTSevere Thunderstorm WarningPUBCrowley, Otero45 min
Jun 23, 6:58 PM MDTSevere Thunderstorm WarningPUBBaca47 min
Jun 23, 7:15 PM MDTTornado WarningBOUAdams, Washington30 min
Jun 23, 7:17 PM MDTSevere Thunderstorm WarningBOUArapahoe28 min
Jun 23, 7:27 PM MDTSevere Thunderstorm WarningPUBBent, Crowley, Otero48 min
Jun 23, 7:46 PM MDTSevere Thunderstorm WarningBOUArapahoe29 min
Jun 23, 8:10 PM MDTSevere Thunderstorm WarningBOUWashington35 min
Jun 23, 8:25 PM MDTTornado WarningBOUWashington35 min
Jun 23, 8:40 PM MDTSevere Thunderstorm WarningBOUWashington35 min
Jun 23, 8:50 PM MDTSevere Thunderstorm WarningGLDYuma55 min
Jun 23, 9:00 PM MDTSevere Thunderstorm WarningBOUWashington30 min
Jun 23, 9:29 PM MDTSevere Thunderstorm WarningBOUWashington31 min
Jun 23, 9:48 PM MDTSevere Thunderstorm WarningGLDKit Carson27 min
Jun 23, 10:06 PM MDTSevere Thunderstorm WarningGLDYuma39 min
Jun 23, 10:07 PM MDTSevere Thunderstorm WarningBOUWashington38 min
Jun 23, 10:13 PM MDTSevere Thunderstorm WarningGLDCheyenne47 min
Jun 23, 10:14 PM MDTSevere Thunderstorm WarningBOUAdams, Morgan, Weld46 min
Jun 23, 10:23 PM MDTSevere Thunderstorm WarningGLDYuma52 min
Jun 23, 10:54 PM MDTSevere Thunderstorm WarningGLDYuma36 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.7 hours before the alert went out and 57 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 2013-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2013-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -58 square meters per square second.193958Sfc1 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
17 J/kg
Mixed-layer CIN
-403 J/kg
Mixed-layer LCL
1605 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
-58 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 22, 6:47 PM MDTMesoscale DiscussionSPCCheyenne, Kit Carson, Logan, Phillips, Sedgwick, Washington and 1 more88 min
Jun 23, 3:48 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Bent, Cheyenne, Crowley, Denver and 13 more87 min
Jun 23, 4:12 PM MDTMesoscale DiscussionSPCBaca93 min

Nearby

Severe Thunderstorm Watches in Colorado, 2013Every severe thunderstorm watch 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.