Alert archive / Nebraska / Tornado Warnings in 2001

Tornado Warning 8, NWS Hastings, NE

April 20, 2001Fillmore County, Nebraska

NWS Hastings, NE issued this tornado warning at Apr 20, 2001, 8:58 PM CDT for Fillmore County, Nebraska. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 20, 2001, 8:58 PM CDT (01:58 UTC)
Expired
Apr 20, 2001, 9:30 PM CDT
In force
32 min
Issued by
NWS Hastings, NE
Area
Whole counties

County Fillmore County, NE

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 20, 4:00 PM CDTSevere Thunderstorm WatchSPC5 hr
Apr 20, 8:15 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.0 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, Omaha, NE at 00:00Z on 2001-04-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 939 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, Omaha, NE at 00:00Z on 2001-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.1939587897Sfc1 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
939 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1568 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
247 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KGID 210158
TORGRI
NEC059-210230-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
858 PM CDT FRI APR 20 2001

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN FILLMORE COUNTY IN SOUTH CENTRAL NEBRASKA

* UNTIL 930 PM CDT

* AT 854 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO OVER
  OHIOWA...OR ABOUT 32 MILES SOUTH OF YORK...MOVING EAST AT 40 MPH.

THIS IS AN EXTREMELY DANGEROUS SITUATION. A TORNADO HAS BEEN SIGHTED.
PEOPLE IN EASTERN FILLMORE COUNTY SHOULD TAKE SHELTER
IMMEDIATELY IN A BASEMENT OR SMALL INTERIOR ROOM ON THE LOWEST FLOOR.

IF IN A MOBILE HOME...LEAVE IT IMMEDIATELY AND GET INSI@DE A STURDY
SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH
AND COVER YOUR HEAD WITH YOUR HANDS.

$$

GUYER

&

LAT...LON 4048 9758 4035 9741 4065 9694 4083 9717

NNNN

The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 20, 7:30 PM CDTSevere Thunderstorm WarningGIDSherman60 min
Apr 20, 7:53 PM CDTSevere Thunderstorm WarningGIDValley52 min
Apr 20, 8:14 PM CDTSevere Thunderstorm WarningGIDClay, Nuckolls46 min
Apr 20, 8:28 PM CDTSevere Thunderstorm WarningGIDFillmore, Thayer62 min
Apr 20, 8:44 PM CDTSevere Thunderstorm WarningGIDHamilton, York46 min
Apr 20, 9:01 PM CDTSevere Thunderstorm WarningGIDDawson, Furnas, Gosper59 min
Apr 20, 9:48 PM CDTSevere Thunderstorm WarningGIDBuffalo, Phelps57 min

Nearby

Tornado Warnings in Nebraska, 2001Every tornado warning in 2001Tornadoes 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.