Alert archive / South Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 16, NWS Rapid City, SD

May 11, 2000Tripp County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at May 11, 2000, 2:18 AM CDT for Tripp County, South Dakota. It was in force for 47 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: May 11, 2000, 2:18 AM CDT (07:18 UTC)
Expired: May 11, 2000, 3:05 AM CDT
In force: 47 min
Issued by: NWS Rapid City, SD
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Tripp County, SD

The radar

The North Platte radar (KLNX), 164 km from the middle of the area, began a volume at 07:17 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
May 11, 2:58 AM CDT	Hail 0.75	Colome, 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 11, 1:30 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 7.3 hours before the alert went out and 209 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: 1405 m above ground
0-6 km bulk shear: 83 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 127 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 10, 9:20 PM CDT, 4 hours 58 minutes earlier.

Area forecast discussion, May 10, 9:20 PM CDT, 4 hours 58 minutes before

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
820 PM MDT WED MAY 10 2000

AFTERNOON PACKAGE AND MORNING MODELS VERIFYING WELL OVR THE CWA WITH
PRECIP INCREASING MARKEDLY OVER THE PAST 3 OR 4 HOURS. MDLS CONTINUE
TO SHOW BEST SWATH OF PRECIP TO OCCUR FROM GCC TO NR D07 BY
MORNING...PRETTY MUCH WHERE 88D SHOWS BEST RETURNS. ALSO OLD MDLS
AND QUICK LOOK AT NEW ETA SHOW WAA TO BE MAXIMIZED OVR THE SRN SD
CWA COUNTIES AS LLVL JET IMPINGES ON BAROCLINIC ZONE. EXPECT PRECIP
TO INCREASE IN THESE AREAS AS WELL DURING THE NEXT 3 OR 4 HOURS.
UPDATES TO ZONES HAVE ONLY MADE SLIGHT MODIFICATIONS TO THE WORDING.
HAVE TOYED WITH THE IDEA OF MENTIONING SOME SN IN HIGHEST BLACK
HILLS...LIKE 6000 FEET AND ABOVE...BUT WITH WETBULB ZERO AT 8100
MSL...SNOW LINE MAY BE NEARER 6500 FEET...HIGHER THAN MOST
RESIDENTS. SO WILL LEAVE OUT.

.UNR...NONE.

BAILEY

In the hours before

Special weather statement, May 11, 1:37 AM CDT, 41 minutes before

SDZ043-044-046-047-049-111200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RAPID CITY SD
1237 AM MDT THU MAY 11 2000

...SEVERE THUNDERSTORM WATCH UNTIL 600 AM MDT (700 AM CDT)...

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR SOUTH CENTRAL SOUTH
DAKOTA UNTIL 600 AM MDT (700 AM CDT). THIS INCLUDES THE COUNTIES OF
JACKSON...BENNETT...MELLETTE...TODD AND TRIPP. SOME CITIES INCLUDED
ARE KADOKA...MARTIN...WHITE RIVER...MISSION AND WINNER.

THUNDERSTORMS ARE EXPECTED EARLY THIS MORNING...SOME COULD BE
SEVERE WITH DAMAGING WIND AND LARGE HAIL THROUGH 600 AM MDT (700 AM
CDT).

HELGESON

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 12:19 AM CDT	Severe Thunderstorm Warning	UNR	Bennett, Todd	31 min
May 11, 12:52 AM CDT	Severe Thunderstorm Warning	UNR	Todd	48 min
May 11, 1:28 AM CDT	Tornado Warning	UNR	Todd	32 min
May 11, 2:25 AM CDT	Tornado Warning	UNR	Tripp	30 min
May 11, 2:56 AM CDT	Severe Thunderstorm Warning	UNR	Tripp	14 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; radar from the NEXRAD Level II archive.