Alert archive / South Dakota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 158, NWS Aberdeen, SD

July 23, 2001Jones County, Stanley County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 23, 2001, 12:31 AM CDT for Jones County, Stanley County, South Dakota. It was in force for 29 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 23, 2001, 12:31 AM CDT (05:31 UTC)
Expired: Jul 23, 2001, 1:00 AM CDT
In force: 29 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

Counties Jones County, SD, Stanley County, SD

The radar

The Rapid City radar (KUDX), 169 km from the middle of the area, began a volume at 05:33 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.

What was reported inside it

Time	Report	Where	Remark
Jul 23, 12:35 AM CDT	Hail 1	Draper, SD

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 5.5 hours before the alert went out and 200 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: 2747 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1276 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 13.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 22, 10:00 PM CDT, 2 hours 31 minutes earlier.

Area forecast discussion, Jul 22, 10:00 PM CDT, 2 hours 31 minutes before

AREA FORECAST DISCUSSION FOR CENTRAL/NORTHCENTRAL AND NORTHEAST
SOUTH DAKOTA AND WEST CENTRAL MINNESOTA
NATIONAL WEATHER SERVICE ABERDEEN SD
10 PM CDT SUN JUL 22 2001

ONE DECENT STORM HAS MOVED INTO MINNESOTA.  MORE APPROACHING FROM
WEST...HOWEVER CONCUR WITH SPC THAT ACTIVITY OVER CENTRAL SECTIONS
OF STATE WILL PROBABLY BE ON THE WANE OVER THE NEXT COUPLE HOURS.
WILL UPDATE AS WATCH IS DROPPED OTHERWISE NO OTHER UPDATES PLANNED.
e
.ABR...NONE.
TDK

In the hours before

Local storm report, Jul 22, 8:43 PM CDT, 3 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN, SD
843 PM CDT SUN JUL 22 2001

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

0736 PM    3 S FLORENCE              SD   1.00 INCH HAIL
07/22/01   CODINGTON                      REPORTED BY
SPOTTERS

0833 PM    1 W WAVERLY               SD   .75 INCH HAIL
07/22/01   CODINGTON                      REPORTED BY
SPOTT{ERS

0815 PM    11/2 NE RAUVILLE          SD   1.50 INCH HAIL
07/22/01   CODINGTON                      REPORTED BY
SPOTTERS

GN

Special weather statement, Jul 22, 9:52 PM CDT, 2 hours 39 minutes before

MNZ039-046-SDZ007-008-011-018>023-230315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
952 PM CDT SUN JUL 22 2001

...SEVERE THUNDERSTORM WATCH NUMBER 610 HAS BEEN CANCELLED FOR ALL
OF NORTHEAST SOUTH DAKOTA...
...SEVERE THUNDERSTORM WATCH 610 HAS ALSO BEEN CANCELLED FOR
TRAVERSE AND BIG STONE COUNTIES IN MINNESOTA.

THE THREAT OF WIDESPREAD SEVERE WEATHER HAS ENDED OVER THE REGION
AND THEREFORE THE WATCH HAS BEEN CANCELLED.  MORE STORMS WILL BE
POSSIBLE OVERNIGHT...BUT THE THREAT OF SEVERE WEATHER APPEARS TO BE
MINIMAL.

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT
HTTP://WWW.CRH.NOAA.GOV/ABR OR AT HTTP://WEATHER.GOV.

TDK
9

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 7:36 PM CDT	Severe Thunderstorm Warning	ABR	Codington	24 min
Jul 22, 8:00 PM CDT	Severe Thunderstorm Warning	ABR	Codington	45 min
Jul 23, 12:41 AM CDT	Severe Thunderstorm Warning	ABR	Day, Roberts	64 min
Jul 23, 1:28 AM CDT	Severe Thunderstorm Warning	ABR	Big Stone	32 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.