Alert archive / Colorado / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 218

April 29, 200014 counties in Colorado

The Storm Prediction Center issued this severe thunderstorm watch at Apr 29, 2000, 9:00 PM MDT for 14 counties in Colorado. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Apr 29, 2000, 9:00 PM MDT (03:00 UTC)
Expired
Apr 30, 2000, 1:00 AM MDT
In force
4 hr
Issued by
the Storm Prediction Center

Counties 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, Morgan County, CO, Otero County, CO, Prowers County, CO, Washington County, CO, Yuma County, CO

The radar

The Goodland radar (KGLD), 108 km from the middle of the area, began a volume at 03:02 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 29, 9:07 PM MDTSevere Thunderstorm WarningPUBKiowa63 min
Apr 29, 9:57 PM MDTSevere Thunderstorm WarningPUBBent, Kiowa63 min
Apr 29, 10:15 PM MDTSevere Thunderstorm WarningPUBOtero45 min
Apr 30, 12:34 AM MDTSevere Thunderstorm WarningPUBBent, Prowers61 min

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 3.0 hours before the alert went out and 87 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 00:00Z on 2000-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 684 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 00:00Z on 2000-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 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
684 J/kg
Mixed-layer CIN
-235 J/kg
Mixed-layer LCL
1790 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
203 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

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

Severe Thunderstorm Watches in Colorado, 2000Every severe thunderstorm watch in 2000

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.