Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 105, NWS Sioux Falls, SD

June 24, 2000Rock County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 24, 2000, 12:23 AM CDT for Rock County, Minnesota. It was in force for 37 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: Jun 24, 2000, 12:23 AM CDT (05:23 UTC)
Expired: Jun 24, 2000, 1:00 AM CDT
In force: 37 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

County Rock County, MN

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 5.4 hours before the alert went out and 219 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 162 J/kg
Mixed-layer CIN: -173 J/kg
Mixed-layer LCL: 1581 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFSD 240524
SVRFSD
IAC119-MNC133-SDC083-099-240600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1223 AM CDT SAT JUN 24 2000

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN LYON COUNTY IN NORTHWEST IOWA
  NORTHEAST LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA
  ROCK COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 100 AM CDT

* AT 1223 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS...FROM 9 MILES NORTHWEST OF LUVERNE 
  TO 5 MILES SOUTHEAST OF SIOUX FALLS...MOVING EAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  BEAVER CREEK AROUND 1235 AM CDT
  LARCHWOOD...LUVERNE AROUND 1245 AM CDT
  HILLS AROUND 1250 AM CDT
  LESTER AROUND 100 AM CDT

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 58 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN SIOUX FALLS.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sioux Falls, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 23, 8:30 PM CDT, 3 hours 53 minutes earlier.

Area forecast discussion, Jun 23, 8:30 PM CDT, 3 hours 53 minutes before

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
830 PM CDT FRI JUN 23 2000

WL BE BRIEF AS THINGS ARE REALLY STARTING TO DEVELOP FAST. A LOOK AT
LAPS SOUNDINGS SHOW CAPES OF 3500 J/KG IN SRN CWA WITH CIN AROUND
-175 J/KG. WHILE CAP IS PRESENT...BOUNDARIES ARE BREAKING THE CAP
AND HAVE RECENTLY STARTED FIRING OFF TSTMS IN BON HOMME COUNTY...W
OF YKN. THIS BOUNDRY FM THE WK CDFNT THAT JUST RECENTLY PUSHED
THROUGH SIOUX FALLS AND HAS BEEN SHOWING WELL ON THE 88D. WINDS
RATHER WEAK AT THE LOW TO MID LVLS ACROSS THE CWA ATTM BUT INFLOW
SHOULD INCREASE SOME THROUGH THE EVE AS 850 MB SW WINDS EXPECTED TO
INCREASE TO 25 KTS BY 09Z. A CONCERN OF MINE IS ERN NEBRASKA MCS HAS
HAD A SLIGHT NW PROPATAGION BEHIND A NW MOVING OUTFLOW BOUNDARY. WE
WL NEED TO KEEP AN EYE ON SRN PTN OF CWA AND HAVE DECIDED TO ADD THE
MENTION OF SVR TSTMS PSBL IN SOME OF THE GROUPINGS AROUND SUX TO
PLAY IT SAFE.

.FSD...NONE

BR

In the hours before

Local storm report, Jun 23, 11:13 PM CDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1113 PM CDT FRI JUN 23 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0846 PM    4 NNW LESTERVILLE         SD   1.75 INCH HAIL
06/23/00   YANKTON                        REPORTED BY EMERGENCY
                                          MANAGEMENT.

0855 PM    1 WSW YANKTON             SD   1 INCH HAIL
06/23/00   YANKTON                        REPORTED BY EMERGENCY
                                          MANAGEMENT.

0901 PM    8 ESE MENNO               SD   1 INCH HAIL
06/23/00   HUTCHINSON                     REPORTED BY PUBLIC.

0916 PM    14 WSW HURLEY             SD   .75 INCH HAIL
06/23/00   TURNER                         REPORTED BY PUBLIC.

1025 PM    2 E ALLEN                 NE   .88 INCH HAIL
06/23/00   DIXON                          REPORTED BY PUBLIC.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 12:33 AM CDT	Severe Thunderstorm Warning	FSD	Jackson	32 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2000 Every severe thunderstorm warning 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.