Alert archive / Colorado / Severe Thunderstorm Watches in 2018

Severe Thunderstorm Watch 213

June 24, 201813 counties in Colorado

The Storm Prediction Center issued this severe thunderstorm watch at Jun 24, 2018, 2:54 PM MDT for 13 counties in Colorado. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 24, 2018, 2:54 PM MDT (20:54 UTC)
Expired
Jun 24, 2018, 9:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt

Counties Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Huerfano County, CO, Kiowa County, CO, Kit Carson County, CO, Las Animas County, CO, Lincoln County, CO, Otero County, CO, Prowers County, CO, Pueblo County, CO

The radar

The Pueblo radar (KPUX), 95 km from the middle of the area, began a volume at 20:57 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
10%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
40%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 24, 3:12 PM MDTSevere Thunderstorm WarningPUBEl Paso48 min
Jun 24, 3:27 PM MDTSevere Thunderstorm WarningBOULincoln26 min
Jun 24, 3:36 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson, Yuma39 min
Jun 24, 3:44 PM MDTSevere Thunderstorm WarningPUBEl Paso, Fremont, Pueblo, Teller31 min
Jun 24, 3:57 PM MDTSevere Thunderstorm WarningPUBEl Paso33 min
Jun 24, 3:59 PM MDTSevere Thunderstorm WarningGLDKit Carson46 min
Jun 24, 4:01 PM MDTSevere Thunderstorm WarningBOULincoln59 min
Jun 24, 4:14 PM MDTSevere Thunderstorm WarningGLDKit Carson46 min
Jun 24, 4:28 PM MDTSevere Thunderstorm WarningPUBCrowley, El Paso, Pueblo32 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 (KDEN), launched 12:00Z, 8.9 hours before the alert went out and 191 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 2018-06-24Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2018-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 square meters per square second.19395878Sfc1 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
1017 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
145 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 24, 1:16 AM MDTMesoscale DiscussionSPCCheyenne, Kit Carson, Logan, Morgan, Phillips, Sedgwick and 2 more59 min
Jun 24, 12:51 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Logan, Morgan, Phillips, Sedgwick and 3 more84 min
Jun 24, 2:04 PM MDTMesoscale DiscussionSPCBaca, Bent, Crowley, Huerfano, Kiowa, Las Animas and 3 more86 min
Jun 24, 4:31 PM MDTMesoscale DiscussionSPCCheyenne, Crowley, Kiowa89 min

Nearby

Severe Thunderstorm Watches in Colorado, 2018Every severe thunderstorm watch in 2018

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.