Alert archive / Colorado / Tornado Watches in 2001

Tornado Watch 458

June 20, 200112 counties in Colorado

The Storm Prediction Center issued this tornado watch at Jun 20, 2001, 3:30 PM MDT for 12 counties in Colorado. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 20, 2001, 3:30 PM MDT (21:30 UTC)
Expired
Jun 20, 2001, 9:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Arapahoe County, CO, Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Las Animas County, CO, Lincoln County, CO, Otero County, CO, Prowers County, CO

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 20, 3:32 PM MDTSevere Thunderstorm WarningPUBHuerfano, Las Animas58 min
Jun 20, 5:23 PM MDTSevere Thunderstorm WarningPUBOtero67 min
Jun 20, 6:25 PM MDTTornado WarningBOULincoln35 min
Jun 20, 7:15 PM MDTSevere Thunderstorm WarningBOULincoln45 min
Jun 20, 7:32 PM MDTTornado WarningBOUAdams, Arapahoe, Denver28 min
Jun 20, 7:47 PM MDTTornado WarningBOUAdams, Arapahoe, Denver33 min
Jun 20, 8:08 PM MDTTornado WarningBOUArapahoe, Elbert37 min
Jun 20, 8:33 PM MDTTornado WarningBOUElbert37 min

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 9.5 hours before the alert went out and 136 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 2001-06-20Temperature 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 2001-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1065 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

Nearby

Tornado Watches in Colorado, 2001Every tornado watch in 2001

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.