Alert archive / South Dakota / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 438

June 19, 200216 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 19, 2002, 1:00 AM CDT for 16 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 19, 2002, 1:00 AM CDT (06:00 UTC)
Expired
Jun 19, 2002, 6:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Brown County, SD, Butte County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Harding County, SD, McPherson County, SD, Meade County, SD, Perkins County, SD, Potter County, SD, Spink County, SD, Sully County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Bismarck radar (KBIS), 154 km from the middle of the area, began a volume at 05:59 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 6.0 hours before the alert went out and 154 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 2002-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 265 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 2002-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -77 square meters per square second.19395878Sfc1 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
265 J/kg
Mixed-layer CIN
-184 J/kg
Mixed-layer LCL
1112 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
-77 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-2.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 8:45 PM CDTSevere Thunderstorm WatchSPCButte, Harding, Perkins, Ziebach4 hr
Jun 19, 5:45 AM CDTSevere Thunderstorm WatchSPCBrown, Day, Edmunds, Faulk, Grant, McPherson and 3 more4 hr
Jun 19, 3:00 PM CDTTornado WatchSPCBrown, Clark, Codington, Day, Deuel, Grant and 4 more5 hr
Jun 19, 6:30 PM CDTSevere Thunderstorm WatchSPCBon Homme, Brookings, Clay, Lake, Lincoln, McCook and 5 more5 hr

Nearby

Severe Thunderstorm Watches in South Dakota, 2002Every severe thunderstorm watch in 2002

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.