Alert archive / South Dakota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 16, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at May 30, 1998, 7:16 PM CDT for Clark County, Codington County, South Dakota. It was in force for 64 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 30, 1998, 7:16 PM CDT (00:16 UTC)
- Expired
- May 30, 1998, 8:20 PM CDT
- In force
- 64 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
Counties Clark County, SD, Codington County, SD
The radar
The Aberdeen radar (KABR), 96 km from the middle of the area, began a volume at 00:15 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 30, 7:35 PM CDT | Hail 1 | Carpenter, 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 30, 4:30 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 0.3 hours before the alert went out and 74 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
- 1585 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 1033 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 7.1
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 30, 10:06 AM CDT, 9 hours 10 minutes earlier.
Area forecast discussion, May 30, 10:06 AM CDT, 9 hours 10 minutes before
AREA FORECAST DISCUSSION FOR CENTRAL/NORTH CENTRAL/NORTHEAST SD AND FOR TRAVERSE/BIG STONE COUNTIES OF MN NATIONAL WEATHER SERVICE ABERDEEN SD 10AM CDT SAT MAY 30 1998 MORNING SOUNDING A LOADED GUN WITH CAPES 2000+ J/KG AND LI -9. MORN SFC ANALYSIS SHOULD A CHAOTIC PATTERN WITH MAIN SFC LOW VCNTY OF PIR WITH TROF BACK TO NW SD AND WARM FRNT E-SE INTO N IA. MEANWHILE ALOFT STRONG CAPPING INTO PARTS OF NE. ALSO OUTFLO HAS BEEN PUHING SOUTH THRU ABR AREA. JUST TOOK A LOOK AT 12Z MODELS AND THEY ARE REMARKABLY SIMILAR TO THEIR INDIVIDUAL TIMING FROM YESTEDAYS RUN. STILL NOT SURE THEY HAVE THE RIGHT IDEA FOR TODAY. ANYWAY WILL HAVE TO KEEP AN EYE ON THE MESOSCALE BOUNDARIES FOR DEVELOPMENT. OVERNIGHT ACTIVITY MAY ALSO PUT A DAMPER ON ACTIVITY FOR TIME BEING AND MAY ALSO HAVE TO LOWER SOME TEMPS. UPDATE EXPECTED SOON. WILL BE PERFORMING AN 18Z RELEASE PER REQUEST FROM SPC. .ABR...NONE. TDK
In the hours before
Special weather statement, May 30, 3:47 PM CDT, 3 hours 29 minutes before
SDZ003>006-009-010-015>018-033>037-045-048-051-310245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 346 PM CDT (246 PM MDT) SAT MAY 30 1998 ...SEVERE THUNDERSTORM WATCH 467 HAS BEEN ISSUED FOR MOST OF CENTRAL AND PARTS OF NORTHEAST SOUTH DAKOTA UNTIL 10 PM CDT... SEVERE THUNDERSTORMS IN NORTHWEST SOUTH DAKOTA ARE EXPECTED TO INCREASE IN COVERAGE AND MOVE EAST OVER NORTHERN AND CENTRAL SOUTH DAKOTA THIS EVENING. THESE STORMS COULD PRODUCE VERY STRONG WINDS AND LARGE HAIL... ESPECIALLY AS THEY MOVE INTO MORE FAVORABLE CONDITIONS EAST OF THE MISSOURI RIVER. THE WATCH AREA INCLUDES SUCH COMMUNITIES AS ABERDEEN...MOBRIDGE... MILLER...PIERRE...MURDO...GETTYSBURG AND REDFIELD. IF YOU ARE IN THE WATCH AREA PLEASE STAY CLOSE TO A RADIO OR TV FOR ANY FURTHER STATEMENTS OR WARNINGS. IF A WARNING IS ISSUED TAKE COVER IMMEDIATELY. TDK
Special weather statement, May 30, 4:03 PM CDT, 3 hours 13 minutes before
MNZ039-046-SDZ007-008-011-019>023-310305- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 403 PM CDT SAT MAY 30 1998 ...TORNADO WATCH 468 FOR NORTHEAST SOUTH DAKOTA UNTIL 10 PM CDT... STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR NORTHEAST SOUTH DAKOTA UNTIL 10 PM CDT. SEVERE THUNDERSTORMS AND POSSIBLY TORNADOES ARE EXPECTED TO DEVELOP OVER NORTHEAST SOUTH DAKOTA THIS EVENING AS A LOW PRESSURE SYSTEM MOVES ACROSS THE EASTERN PART OF THE STATE. SOME COMMUNITIES INCLUDED IN THIS TORNADO WATCH ARE BRITTON... WEBSTER...WATERTOWN...SISSETON...WHEATON...ORTONVILLE...CLARK AND MILBANK. REMEMBER... A TORNADO WATCH MEANS THAT TORNADOES ARE POSSIBLE IN AND NEAR THE WATCH AREA. LARGE HAIL... DAMAGING WINDS... AND TORRENTIAL RAINFALL MAY ALSO OCCUR. BE READY TO SEEK A PLACE OF SAFETY IF A WARNING IS ISSUED FOR YOUR AREA. TDK
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 7:21 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington | 59 min |
| May 30, 7:40 PM CDT | Severe Thunderstorm Warning | ABR | Hamlin | 65 min |
| May 30, 8:16 PM CDT | Severe Thunderstorm Warning | ABR | Deuel | 34 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.