Alert archive / Colorado / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 356

June 25, 201425 counties in Colorado

The Storm Prediction Center issued this severe thunderstorm watch at Jun 25, 2014, 2:23 PM MDT for 25 counties in Colorado. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 25, 2014, 2:23 PM MDT (20:23 UTC)
Expired
Jun 25, 2014, 9:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 25 counties

Adams County, CO, Arapahoe County, CO, Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Elbert County, CO, Huerfano County, CO, Kiowa County, CO, Kit Carson County, CO, Larimer County, CO, Las Animas County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Otero County, CO, Phillips County, CO, Prowers County, CO, Pueblo County, CO, Sedgwick County, CO, Teller County, CO, Washington County, CO, Weld County, CO, Yuma County, CO

The radar

The Denver radar (KFTG), 63 km from the middle of the area, began a volume at 20:27 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
30%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 25, 3:01 PM MDTSevere Thunderstorm WarningBOUMorgan, Weld29 min
Jun 25, 4:50 PM MDTSevere Thunderstorm WarningPUBHuerfano, Las Animas, Otero, Pueblo53 min
Jun 25, 4:53 PM MDTSevere Thunderstorm WarningBOUWeld22 min
Jun 25, 5:17 PM MDTSevere Thunderstorm WarningBOUWeld17 min
Jun 25, 5:56 PM MDTSevere Thunderstorm WarningBOULogan34 min
Jun 25, 6:50 PM MDTSevere Thunderstorm WarningGLDYuma40 min
Jun 25, 7:22 PM MDTSevere Thunderstorm WarningPUBProwers38 min
Jun 25, 7:25 PM MDTSevere Thunderstorm WarningBOUWashington33 min
Jun 25, 7:29 PM MDTSevere Thunderstorm WarningGLDYuma33 min
Jun 25, 7:39 PM MDTTornado WarningPUBProwers36 min
Jun 25, 7:59 PM MDTSevere Thunderstorm WarningGLDKit Carson46 min
Jun 25, 8:00 PM MDTSevere Thunderstorm WarningPUBProwers45 min
Jun 25, 8:13 PM MDTTornado WarningPUBProwers32 min
Jun 25, 8:37 PM MDTSevere Thunderstorm WarningGLDYuma38 min
Jun 25, 8:43 PM MDTSevere Thunderstorm WarningPUBProwers34 min
Jun 25, 8:53 PM MDTSevere Thunderstorm WarningGLDKit Carson, Yuma52 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, 8.4 hours before the alert went out and 76 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 2014-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 687 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 2014-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
687 J/kg
Mixed-layer CIN
-198 J/kg
Mixed-layer LCL
1225 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 24, 7:13 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Crowley, Elbert, Las Animas, Lincoln and 4 more92 min
Jun 25, 1:28 PM MDTMesoscale DiscussionSPCAdams, Alamosa, Arapahoe, Baca, Bent, Boulder and 33 more2 hr
Jun 25, 5:51 PM MDTMesoscale DiscussionSPCBent, Cheyenne, Crowley, Kiowa, Kit Carson, Lincoln and 8 more84 min
Jun 25, 12:58 PM MDTMesoscale DiscussionSPCArthur, Banner, Box Butte, Cherry, Cheyenne, Dawes and 9 more2 hr
Jun 25, 1:50 PM MDTSevere Thunderstorm WatchSPCBanner, Box Butte, Cheyenne, Dawes, Deuel, Garden and 5 more7 hr
Jun 25, 5:07 PM MDTMesoscale DiscussionSPCBanner, Box Butte, Cheyenne, Dawes, Garden, Kimball and 4 more83 min

Nearby

Severe Thunderstorm Watches in Colorado, 2014Every severe thunderstorm watch in 2014

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.