Alert archive / South Dakota / Tornado Warnings in 1998
Tornado Warning 1, NWS Aberdeen, SD
NWS Aberdeen, SD issued this tornado warning at May 14, 1998, 7:44 PM CDT for Lyman County, South Dakota. It was in force for 46 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, 7:44 PM CDT (00:44 UTC)
- Expired
- May 14, 1998, 8:30 PM CDT
- In force
- 46 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 00:45 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, 0.7 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
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KABR 150044 RRA TORABR SDC085-150130- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ABERDEEN SD 744 PM CDT THU MAY 14 1998 THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN LYMAN COUNTY IN CENTRAL SOUTH DAKOTA * UNTIL 830 PM CDT * AT 742 PM CDT...DOPPLER RADAR INDICATED A TORNADO 21 MILES EAST OF WINNER OR 12 MILES SOUTH OF IONA MOVING NORTH AT 30 MPH. * THE TORNADO WILL BE NEAR... * IONA AT 755 PM CDT GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR! HG/MM
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at May 14, 10:00 AM CDT, 9 hours 44 minutes earlier.
Area forecast discussion, May 14, 10:00 AM CDT, 9 hours 44 minutes before
AREA FORECAST DISCUSSION FOR CENTRAL/NORTH CENTRAL/NORTHEAST SD AND FOR TRAVERSE/BIG STONE COUNTIES OF MN NATIONAL WEATHER SERVICE ABERDEEN SD 10 AM CDT THU MAY 14 1998 ABR 12Z SOUNDING QUITE IMPRESSIVE FOR MID MAY IN NE SD. REAL DECENT INSTABILITY BUT A STRONG CAP IN PLACE (ABOUT 6.0C)...7H TEMP +11C. WOW AM TEMPTED TO TAKE OUT ANY MENTION OF TSRA THIS AFTN NE CWA AS WILL HAVE TO AWAIT DAYTIME HEATING AND LIFT FROM SYS MOVING OUT OF SW US FOR THINGS TO POP. MIGHT BE A BIT EASIER TO GET SOME COVECTION IN CENTRAL ZONES UNDER COOLER TEMPS ALOFT BUT ALSO SOME DRYING OCCURRING IN BOUNDARY LAYER VIA NW WINDS. WILL BE UPDATING ZONES TO BEEF UP WNDS AND TEMPS IN FEW PLACES. .ABR...NONE. TDK
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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 14, 11:26 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 34 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 |
Nearby
Tornado Warnings in South Dakota, 1998Every tornado warning in 1998Tornadoes 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.