Alert archive / South Dakota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 92, NWS Sioux Falls, SD

June 10, 2001Moody County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 10, 2001, 12:23 AM CDT for Moody County, South Dakota. It was in force for 22 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jun 10, 2001, 12:23 AM CDT (05:23 UTC)
Expired: Jun 10, 2001, 12:45 AM CDT
In force: 22 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Moody County, SD

The radar

The Sioux Falls radar (KFSD), 43 km from the middle of the area, began a volume at 05:23 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.

Issued	Product	Office	Lasted
Jun 9, 10:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 5.4 hours before the alert went out and 169 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: 1849 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1555 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFSD 100523
SVRFSD
SDC101-100545-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1223 AM CDT SUN JUN 10 2001

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN MOODY COUNTY IN EAST CENTRAL SOUTH DAKOTA

* UNTIL 1245 AM CDT

* AT 1222 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 12 MILES NORTHWEST OF COLMAN TO
  19 MILES SOUTHWEST OF COLMAN...OR FROM 5 MILES NORTHEAST OF MADISON
  TO 12 MILES SOUTH OF MADISON...MOVING EAST AT 60 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  COLMAN AROUND 1230 AM CDT
  EGAN...FLANDREAU...TRENT AROUND 1240 AM CDT

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL AND DAMAGING WINDS.
GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 4405 9689 4385 9689 4385 9646 4406 9647

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 9, 9:20 PM CDT, 3 hours 3 minutes earlier.

Area forecast discussion, Jun 9, 9:20 PM CDT, 3 hours 3 minutes before

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
920 PM CDT SAT JUN 9 2001

LINE OF THUNDERSTORMS NOW FILLING IN FM CNTRL DKTS TO CNTRL NE AND
NOW LOOKS LIKE MOST OF CWA WILL HAVE TSTMS LKLY MOVG EWD OVR CWA
AFTER MIDN. EARLIER UPDATED WITH NEW WATCH TO UP POPS TO AT LEAST
SCT OVR CWA...BUT WILL MONITOR FOR ANOTHER UPDATE TO UNQUALIFIED
POPS. OTRW PREV FCST IN THE BALLPARK. BIG QUESTION IS HOW MUCH OF
THE TSTMS WILL REMAIN SVR AFT MIDN...AND WILL KEEP THE MENTION OF
SVR MOST SD CWA EXCPT FAR SE...BUT WDLY SCT SVR FURTHER E NOT OUT
OF QUESTION AS SHORT WAVE INTERACTS WITH LOW LVL JET AND INSTABILITY.

.FSD...NONE
RYRHOLM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 9:37 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	38 min
Jun 9, 10:13 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	47 min
Jun 9, 10:28 PM CDT	Tornado Warning	FSD	Aurora, Brule	32 min
Jun 9, 11:14 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	31 min
Jun 9, 11:26 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Douglas	34 min
Jun 9, 11:26 PM CDT	Severe Thunderstorm Warning	FSD	Sanborn	34 min
Jun 9, 11:37 PM CDT	Severe Thunderstorm Warning	FSD	Kingsbury, Miner	23 min
Jun 9, 11:45 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	30 min
Jun 9, 11:55 PM CDT	Tornado Warning	FSD	Kingsbury, Lake, Miner	35 min
Jun 10, 12:00 AM CDT	Severe Thunderstorm Warning	FSD	Lake, Miner	30 min
Jun 10, 12:07 AM CDT	Tornado Warning	FSD	McCook	38 min
Jun 10, 12:15 AM CDT	Tornado Warning	FSD	Brookings, Lake, Moody	30 min
Jun 10, 12:17 AM CDT	Tornado Warning	FSD	Minnehaha	43 min
Jun 10, 12:27 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Turner	48 min
Jun 10, 12:38 AM CDT	Severe Thunderstorm Warning	FSD	Moody	37 min
Jun 10, 1:33 AM CDT	Severe Thunderstorm Warning	FSD	Union	27 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2001 Every severe thunderstorm warning 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.