Alert archive / South Dakota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 8, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at May 14, 1998, 11:26 PM CDT for Lyman County, South Dakota. It was in force for 34 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
- May 14, 1998, 11:26 PM CDT (04:26 UTC)
- Expired
- May 15, 1998, 12:00 AM CDT
- In force
- 34 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
County Lyman County, SD
The radar
The Aberdeen radar (KABR), 207 km from the middle of the area, began a volume at 04:26 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 00:00Z, 4.4 hours before the alert went out and 160 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.
- Mixed-layer CAPE
- 2296 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1504 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
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 May 14, 9:25 PM CDT, 2 hours 1 minute earlier.
Area forecast discussion, May 14, 9:25 PM CDT, 2 hours 1 minute before
AREA FORECAST DISCUSSION FOR CENTRAL/NORTH CENTRAL/NORTHEAST SD AND FOR TRAVERSE/BIG STONE COUNTIES OF MN NATIONAL WEATHER SERVICE ABERDEEN SD 925 PM CDT THU MAY 14 1998 HAVE UPDATED ZONES FOR SCATTERED THUNDERSTORMS IN CENTRAL ZONES... AND TO RAISE POPS IN WC MINN ZONES. .ABR...NONE. MIDDLEBROOKE
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 7:44 PM CDT | Tornado Warning | ABR | Lyman | 46 min |
| May 14, 8:50 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 50 min |
| May 14, 9:41 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Day | 29 min |
| May 14, 9:58 PM CDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 47 min |
| May 14, 10:09 PM CDT | Severe Thunderstorm Warning | ABR | Day | 46 min |
| May 14, 11:06 PM CDT | Severe Thunderstorm Warning | ABR | Hamlin | 49 min |
| May 15, 3:40 AM CDT | Severe Thunderstorm Warning | ABR | Codington, Hamlin | 30 min |
| May 15, 4:37 AM CDT | Severe Thunderstorm Warning | ABR | Grant | 33 min |
| May 15, 2:52 PM CDT | Flash Flood Warning | ABR | Spink | 4 hr |
| May 15, 2:57 PM CDT | Flash Flood Warning | ABR | Spink | 4 hr |
| May 15, 4:41 AM CDT | Severe Thunderstorm Warning | ABR | Big Stone | 49 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1998Every severe thunderstorm warning in 1998
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.