Alert archive / Colorado / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 651

August 28, 20026 states

The Storm Prediction Center issued this severe thunderstorm watch at Aug 28, 2002, 6:45 PM MDT for 6 states. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Aug 28, 2002, 6:45 PM MDT (00:45 UTC)
Expired
Aug 28, 2002, 11:00 PM MDT
In force
4 hr
Issued by
the Storm Prediction Center
All 33 counties

Baca County, CO, Bent County, CO, Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Phillips County, CO, Prowers County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Hamilton County, KS, Morton County, KS, Sherman County, KS, Stanton County, KS, Wallace County, KS, Wichita County, KS, Chase County, NE, Dundy County, NE, Quay County, NM, Union County, NM, Cimarron County, OK, Texas County, OK, Dallam County, TX, Deaf Smith County, TX, Hartley County, TX, Moore County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Sherman County, TX

The radar

The Pueblo radar (KPUX), 186 km from the middle of the area, began a volume at 00:46 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

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

IssuedProductOfficeCountiesLasted
Aug 28, 6:45 PM MDTFlash Flood WarningPUBBent, Prowers4 hr
Aug 28, 6:46 PM MDTSevere Thunderstorm WarningPUBBent59 min
Aug 28, 6:47 PM MDTSevere Thunderstorm WarningGLDYuma58 min
Aug 28, 7:00 PM MDTSevere Thunderstorm WarningABQQuay60 min
Aug 28, 7:09 PM MDTFlash Flood WarningBOUWashington3 hr
Aug 28, 7:16 PM MDTSevere Thunderstorm WarningGLDKit Carson59 min
Aug 28, 7:21 PM MDTSevere Thunderstorm WarningAMACimarron39 min
Aug 28, 7:39 PM MDTSevere Thunderstorm WarningBOUWashington36 min
Aug 28, 7:42 PM MDTSevere Thunderstorm WarningAMADallam, Hartley33 min
Aug 28, 8:41 PM MDTSevere Thunderstorm WarningABQQuay34 min
Aug 28, 10:57 PM MDTFlash Flood WarningGLDCheyenne, Rawlins6 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.8 hours before the alert went out and 242 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, Amarillo Airport, TX at 00:00Z on 2002-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2480 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2002-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 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
2480 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1339 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 29, 1:05 PM MDTSevere Thunderstorm WatchSPCGarfield, Mesa, Moffat, Montrose, Rio Blanco7 hr
Aug 29, 2:45 PM MDTSevere Thunderstorm WatchSPCAdams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 8 more7 hr

Nearby

Severe Thunderstorm Watches in Colorado, 2002Severe Thunderstorm Watches in Kansas, 2002Severe Thunderstorm Watches in Texas, 2002Every severe thunderstorm watch in 2002

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.