Alert archive / Minnesota / Tornado Warnings in 2001

Tornado Warning 1, NWS Sioux Falls, SD

April 7, 2001Murray County, Nobles County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Apr 7, 2001, 3:51 AM CDT for Murray County, Nobles County, Minnesota. It was in force for 24 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 7, 2001, 3:51 AM CDT (08:51 UTC)
Expired
Apr 7, 2001, 4:15 AM CDT
In force
24 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

Counties Murray County, MN, Nobles County, MN

The radar

The Sioux Falls radar (KFSD), 83 km from the middle of the area, began a volume at 08:51 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 watch it was issued in

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

IssuedProductOfficeLasted
Apr 7, 1:45 AM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 8.9 hours before the alert went out and 240 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, Aberdeen, SD at 00:00Z on 2001-04-07Temperature 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, Aberdeen, SD at 00:00Z on 2001-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 147 square meters per square second.1939587897117136Sfc1 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
1038 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
147 m²/s²
0-3 km storm-relative helicity
412 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 KFSD 070852
TORFSD
MNC101-105-070915-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
351 AM CDT SAT APR 7 2001

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  MURRAY COUNTY IN SOUTHWEST MINNESOTA
  NOBLES COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 415 AM CDT

* AT 351 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 9 MILES SOUTH OF RUSHMORE...OR ABOUT 13 MILES SOUTHWEST OF
  WORTHINGTON...MOVING NORTH AT 60 MPH.

* THE TORNADO WILL BE NEAR...
  5 MILES EAST OF ADRIAN AROUND 400 AM 
  FULDA AROUND 410 AM CDT
  CURRIE...DOVRAY AROUND 415 AM CDT

THIS WARNING REPLACES THE SEVERE =THUNDERSTORM WARNING PREVIOUSLY
ISSUED FOR THE WARNED AREA.

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE
COVER NOW.

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 7, 2:22 AM CDTSevere Thunderstorm WarningFSDNobles, Rock38 min
Apr 7, 3:05 AM CDTSevere Thunderstorm WarningFSDNobles, Rock25 min
Apr 7, 3:29 AM CDTSevere Thunderstorm WarningFSDNobles31 min
Apr 7, 4:23 AM CDTSevere Thunderstorm WarningFSDMurray37 min

Nearby

Tornado Warnings in Minnesota, 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; radar from the NEXRAD Level II archive.