Alert archive / Nebraska / Tornado Warnings in 2000

Tornado Warning 8, NWS Omaha, NE

May 20, 2000Madison County, Nebraska

NWS Omaha, NE issued this tornado warning at May 20, 2000, 3:39 PM CDT for Madison County, Nebraska. It was in force for 36 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
May 20, 2000, 3:39 PM CDT (20:39 UTC)
Expired
May 20, 2000, 4:15 PM CDT
In force
36 min
Issued by
NWS Omaha, NE
Area
Whole counties

County Madison County, NE

The radar

The Omaha radar (KOAX), 122 km from the middle of the area, began a volume at 20:42 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.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 8.7 hours before the alert went out and 122 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 12:00Z on 2000-05-20Temperature 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 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 12:00Z on 2000-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.1939Sfc1 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
1261 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KOAX 202046 COR
TOROMA
NEC119-202115-
BULLETIN - EAS ACTIVATION REQUESTED...CORRECTION
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA NE
339 PM CDT SAT MAY 20 2000

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN MADISON COUNTY IN NORTHEAST NEBRASKA

* UNTIL 415 PM CDT

* AT 336 PM CDT...THE PUBLIC REPORTED A TORNADO 10 MILES NORTH OF
  HUMPHREY...OR ABOUT 25 MILES SOUTH OF NORFOLK...MOVING NORTHEAST
  AT 20 MPH.

* SOME LOCATIONS IN THE PATH OF THE TORNADO THROUGH 415 PM CDT   
INCLUDE... RURAL SOUTHEASTERN MADISON COUNTY 
  THIS TORNADO MAY PASS NEAR THE TOWN OF MADISON.  

IF YOU ARE IN THE PATH OF A TORNADO...GO TO A BASEMENT. IF A BASEMENT
IS NOT AVAILABLE...TAKE COVER IN AN INTERIOR ROOM ON THE LOWEST LEVEL
OF YOUR HOME OR BUSINESS. AVOID WINDOWS.


MEAD/POWERS  

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 4:37 PM CDTSevere Thunderstorm WarningOAXWayne23 min

Nearby

Tornado Warnings in Nebraska, 2000Every tornado warning in 2000Tornadoes 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.