Alert archive / South Dakota / Tornado Warnings in 2001

Tornado Warning 14, NWS Rapid City, SD

July 22, 2001Meade County, Ziebach County, South Dakota

NWS Rapid City, SD issued this tornado warning at Jul 22, 2001, 8:57 PM MDT for Meade County, Ziebach County, South Dakota. It was in force for 48 min. 2 reports 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 22, 2001, 8:57 PM MDT (02:57 UTC)
Expired
Jul 22, 2001, 9:45 PM MDT
In force
48 min
Issued by
NWS Rapid City, SD
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Meade County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 88 km from the middle of the area, began a volume at 02:57 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

TimeReportWhereRemark
Jul 22, 9:12 PM MDTTornado F0Faith, SDA fireman, who was a trained storm spotter, reported seeing a tornado form and momentarily touch the ground south of Faith.
Jul 22, 9:30 PM MDTHail 2.75Bridger, 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.0 hours before the alert went out and 250 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, Bismarck Municip, ND at 00:00Z on 2001-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1437 joules per kilogram.LCLLFCEL10008507005003002001001 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, Bismarck Municip, ND at 00:00Z on 2001-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939587897Sfc1 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
1437 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1385 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.6

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 tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Rapid City, SD wrote its last area forecast discussion before this tornado warning went out at Jul 22, 3:00 PM MDT, 5 hours 57 minutes earlier.

Area forecast discussion, Jul 22, 3:00 PM MDT, 5 hours 57 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
300 PM MDT SUN JUL 22 2001

S/WV TROF MOVG THRU ERN MT HAS TRIGGERED TSTMS OVR ERN MT THIS
AFTN.  MDLS WEAKEN SRN VORT BY 00Z...BUT IT CURRENTLY SHOWS NO SIGNS
OF WEAKENING. MST OF ENERGY W/ THE TROF WL ROTATE THRU MT AND
ND...BUT WL ALSO CLIP NERN WY AND NWRN SD.  ASSOC CD FNT WL PUSH
THRU SD OVRNITE...BUT AMS WL BCM MOR STABLE AFTER SUNSET.  TMW LOOKS
COOLER W/ LOWER TSTM POPS...BUT ANTHR S/WV IS PROGGED TO MOV OVR THE
AREA MON NITE.  ELY UPSLOP SFC WNDS WL INCRS THE CHC OF PRECIP FOR
THE BLK HLS AND FOOTHILLS...W/ SMLR POPS OVR THE REST OF THE AREA.
THEN WNDS BECOM SELY AGAIN BY TUES FOR MOR AFTN/EVE TSTMS.  THE
EXTENDED PTN IS MOR ZONAL/NRN FLOW AND CUTS OFF THE SWRN MSTR
FEED...BUT S/WVS WL HELP TRIGGER TSTMS.

.UNR...NONE.
SANDERS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 6:42 PM MDTSevere Thunderstorm WarningUNRButte, Harding63 min
Jul 22, 7:40 PM MDTSevere Thunderstorm WarningUNRButte50 min
Jul 22, 8:05 PM MDTSevere Thunderstorm WarningUNRMeade55 min
Jul 22, 9:31 PM MDTSevere Thunderstorm WarningUNRHaakon44 min
Jul 22, 9:39 PM MDTTornado WarningUNRHaakon51 min
Jul 22, 9:41 PM MDTSevere Thunderstorm WarningUNRLawrence49 min
Jul 22, 10:30 PM MDTSevere Thunderstorm WarningUNRHaakon45 min
Jul 22, 10:32 PM MDTSevere Thunderstorm WarningUNRMeade43 min
Jul 22, 11:00 PM MDTSevere Thunderstorm WarningUNRMeade45 min
Jul 23, 12:09 AM MDTSevere Thunderstorm WarningUNRHaakon, Jackson51 min
Jul 23, 5:35 PM MDTSevere Thunderstorm WarningUNRLawrence55 min
Jul 22, 7:09 PM MDTSevere Thunderstorm WarningUNRCampbell66 min
Jul 22, 8:39 PM MDTSevere Thunderstorm WarningUNRCrook66 min
Jul 23, 4:46 PM MDTSevere Thunderstorm WarningUNRCrook59 min
Jul 23, 5:25 PM MDTSevere Thunderstorm WarningUNRCampbell50 min

Nearby

Tornado Warnings in South Dakota, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.