Alert archive / Colorado / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 445

June 9, 200512 counties in Colorado; Cheyenne County, Deuel County, Kimball County, Nebraska; Laramie County, Wyoming

The Storm Prediction Center issued this severe thunderstorm watch at Jun 9, 2005, 5:20 PM MDT for 12 counties in Colorado; Cheyenne County, Deuel County, Kimball County, Nebraska; Laramie County, Wyoming. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 9, 2005, 5:20 PM MDT (23:20 UTC)
Expired
Jun 9, 2005, 11:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Adams County, CO, Arapahoe County, CO, Denver County, CO, Elbert County, CO, Kit Carson County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, NE, Deuel County, NE, Kimball County, NE, Laramie County, WY

The radar

The Denver radar (KFTG), 126 km from the middle of the area, began a volume at 23:21 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.

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, 11.3 hours before the alert went out and 65 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 2005-06-09Temperature 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 2005-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -39 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
1292 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
-39 m²/s²
0-3 km storm-relative helicity
140 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 9, 4:30 PM MDTMesoscale DiscussionSPCAdams, Kit Carson, Logan, Morgan, Phillips, Sedgwick and 3 more90 min
Jun 8, 7:02 PM MDTMesoscale DiscussionSPCCass, Gage, Johnson, Lancaster, Nemaha, Otoe and 3 more58 min
Jun 9, 1:10 PM MDTTornado WatchSPCChase, Dawson, Dundy, Frontier, Furnas, Gosper and 7 more9 hr
Jun 9, 2:58 PM MDTMesoscale DiscussionSPCAntelope, Boyd, Brown, Cedar, Cuming, Dakota and 10 more2 hr
Jun 9, 4:28 PM MDTMesoscale DiscussionSPCAdams, Buffalo, Clay, Dawson, Franklin, Frontier and 13 more92 min
Jun 9, 4:50 PM MDTTornado WatchSPCAdams, Buffalo, Clay, Fillmore, Franklin, Greeley and 14 more5 hr

Nearby

Severe Thunderstorm Watches in Colorado, 2005Severe Thunderstorm Watches in Nebraska, 2005Severe Thunderstorm Watches in Wyoming, 2005Every severe thunderstorm watch in 2005

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.