Alert archive / South Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 207, NWS Aberdeen, SD

August 29, 1997Hand County, Hyde County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 29, 1997, 4:01 PM CDT for Hand County, Hyde County, South Dakota. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 29, 1997, 4:01 PM CDT (21:01 UTC)
Expired: Aug 29, 1997, 4:50 PM CDT
In force: 49 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

Counties Hand County, SD, Hyde County, SD

The radar

The Aberdeen radar (KABR), 120 km from the middle of the area, began a volume at 21:03 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

Aberdeen, SD (KABR), launched 12:00Z, 9.0 hours before the alert went out and 77 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: 1421 J/kg
Mixed-layer CIN: -187 J/kg
Mixed-layer LCL: 823 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 Aug 29, 10:50 AM CDT, 5 hours 11 minutes earlier.

Area forecast discussion, Aug 29, 10:50 AM CDT, 5 hours 11 minutes before

AREA FORECAST DISCUSSION FOR CENTRAL/NORTH CENTRAL/NORTHEAST SD
AND FOR TRAVERSE/BIG STONE COUNTIES OF MN
NATIONAL WEATHER SERVICE ABERDEEN SD
1050 AM CDT FRI AUG 29 1997

88D AND SAT LOOP SHOW SCT TSTMS POPPING OVER WRN SD AS FRONT AND
SHORT WAVE MOVE SLOWLY EAST. HAVE UPDATED TO INCREASE POPS OVER CENTRAL
SD AND INTRODUCE SLIGHT CHC OF TSTMS AS FAR EAST AS ABR AND REDFIELD.
ALSO REMOVED POPS IN WC MN ZONES AND LOWER HIGHS A BIT AS LOW CLDS ARE
SLOW TO DISSIPATE.

.ABR...NONE.

MGM

In the hours before

Special weather statement, Aug 29, 11:10 AM CDT, 4 hours 51 minutes before

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Special weather statement, Aug 29, 11:13 AM CDT, 4 hours 48 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 6:25 PM CDT	Severe Thunderstorm Warning	ABR	Brown	30 min
Aug 29, 6:54 PM CDT	Severe Thunderstorm Warning	ABR	Day	46 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1997 Every severe thunderstorm warning in 1997

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.