Alert archive / South Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 6, NWS Rapid City, SD

May 7, 2000Fall River County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at May 7, 2000, 3:31 PM MDT for Fall River County, South Dakota. It was in force for 34 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: May 7, 2000, 3:31 PM MDT (21:31 UTC)
Expired: May 7, 2000, 4:05 PM MDT
In force: 34 min
Issued by: NWS Rapid City, SD
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Fall River County, SD

What was reported inside it

Time	Report	Where	Remark
May 7, 3:55 PM MDT	Hail 0.75	Hot Spgs, SD
May 7, 4:12 PM MDT	Hail 0.88	Hot Spgs, 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 watch it was issued in

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

Issued	Product	Office	Lasted
May 7, 2:30 PM MDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 9.5 hours before the alert went out and 106 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 794 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Rapid City, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at May 7, 3:00 PM MDT, 31 minutes earlier.

Area forecast discussion, May 7, 3:00 PM MDT, 31 minutes before

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
300 PM MDT SUN MAY 7 2000

TORNADO WATCH IN EFFECT UNTIL 8PM MDT FOR SOUTHWEST/SOUTH CENTRAL
COUNTIES. STRONG SHORTWAVE MOVING ACROSS CENTRAL WYOMING...WITH
CONVECTION FIRING UP OVER EAST CENTRAL WYOMING. SUFFICIENT
SHEAR/INSTABILITY OVER FAR SOUTH FOR SUPERCELLS.

SHORTWAVE WILL MOVE EAST OF THE AREA OVERNIGHT...WITH PRECIP ENDING.
UNSETTLED WEATHER WILL CONTINUE THROUGH THE WEEK.

.UNR...NONE.

KC

In the hours before

Special weather statement, May 7, 10:40 AM MDT, 4 hours 51 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 4:05 PM MDT	Severe Thunderstorm Warning	UNR	Fall River	45 min
May 7, 4:45 PM MDT	Severe Thunderstorm Warning	UNR		35 min
May 7, 5:25 PM MDT	Severe Thunderstorm Warning	UNR	Bennett	60 min
May 7, 5:41 PM MDT	Severe Thunderstorm Warning	UNR	Todd	59 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.