Alert archive / Nebraska / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 605

July 21, 200036 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Jul 21, 2000, 3:00 PM CDT for 36 counties in Nebraska. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 21, 2000, 3:00 PM CDT (20:00 UTC)
Expired
Jul 21, 2000, 9:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 36 counties

Adams County, NE, Arthur County, NE, Blaine County, NE, Brown County, NE, Buffalo County, NE, Chase County, NE, Cherry County, NE, Custer County, NE, Dawson County, NE, Dundy County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Grant County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Kearney County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE, Rock County, NE, Sheridan County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Webster County, NE

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 21, 3:05 PM CDTSevere Thunderstorm WarningLBFCherry55 min
Jul 21, 4:14 PM CDTSevere Thunderstorm WarningLBFRock31 min
Jul 21, 6:08 PM CDTSevere Thunderstorm WarningLBFCherry52 min
Jul 21, 6:26 PM CDTSevere Thunderstorm WarningLBFGarfield34 min
Jul 21, 6:40 PM CDTSevere Thunderstorm WarningGLDDundy65 min
Jul 21, 6:44 PM CDTSevere Thunderstorm WarningLBFGarfield31 min
Jul 21, 6:51 PM CDTSevere Thunderstorm WarningLBFGrant54 min
Jul 21, 7:00 PM CDTSevere Thunderstorm WarningGIDValley60 min
Jul 21, 7:18 PM CDTSevere Thunderstorm WarningLBFKeith27 min
Jul 21, 7:37 PM CDTTornado WarningGIDValley38 min
Jul 21, 7:47 PM CDTSevere Thunderstorm WarningLBFKeith, Lincoln28 min
Jul 21, 8:02 PM CDTSevere Thunderstorm WarningGIDSherman58 min
Jul 21, 8:32 PM CDTSevere Thunderstorm WarningGIDBuffalo58 min
Jul 21, 8:38 PM CDTSevere Thunderstorm WarningLBFPerkins37 min
Jul 21, 8:57 PM CDTSevere Thunderstorm WarningLBFChase, Hayes33 min

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.0 hours before the alert went out and 80 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, N. Platte/Lee Bi, NE at 12:00Z on 2000-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 715 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, N. Platte/Lee Bi, NE at 12:00Z on 2000-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
715 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
483 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.4
Supercell composite
1.2

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 21, 3:15 PM CDTTornado WatchSPCBanner, Box Butte, Cheyenne, Dawes, Deuel, Kimball and 3 more7 hr

Nearby

Severe Thunderstorm Watches in Nebraska, 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.