Alert archive / South Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 158, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 25, 1997, 12:07 AM CDT for Hamlin County, South Dakota. It was in force for 48 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
- Jul 25, 1997, 12:07 AM CDT (05:07 UTC)
- Expired
- Jul 25, 1997, 12:55 AM CDT
- In force
- 48 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
County Hamlin County, SD
The radar
The Sioux Falls radar (KFSD), 126 km from the middle of the area, began a volume at 05:09 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 24, 10:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 5.1 hours before the alert went out and 99 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
- 2516 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 877 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.6
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.
In the hours before
Special weather statement, Jul 24, 11:40 PM CDT, 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 1140 PM CDT THU JUL 24 1997 SDZ006-011-018-021-250700- BROWN-DAY-GRANT-SPINK- INCLUDING THE CITIES OF...ABERDEEN...WEBSTER...REDFIELD...MILBANK 1140 PM CDT THU JUL 24 1997 ...VERY HEAVY RAINS THROUGH 200 AM CDT... A SYSTEM OF VERY SLOW MOVING THUNDERSTORMS IS PRODUCING HEAVY RAINS AT THE RATE OF 2-3 INCHES PER HOUR WITH HIGHER AMOUNTS IN NORTH EASTERN SPINK COUNTY...AND EXTREME WESTERN BROWN COUNTY. WATER STANDING AND OVER SOME COUNTY ROADS HAS BEEN REPORTED BY LAW ENFORCEMENT. USE EXTREME CAUTION IF TRAVELING IN THE AREA. STANDING WATER ON ROADWAYS IS DIFFICULT TO SEE AT NIGHT. KH/RB
Special weather statement, Jul 24, 11:42 PM CDT, 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 1140 PM CDT THU JUL 24 1997 SDZ006-011-018-021-250700- BROWN-DAY-GRANT-SPINK- INCLUDING THE CITIES OF...ABERDEEN...WEBSTER...REDFIELD...MILBANK 1140 PM CDT THU JUL 24 1997 ...VERY HEAVY RAINS THROUGH 200 AM CDT... A SYSTEM OF VERY SLOW MOVING THUNDERSTORMS IS PRODUCING HEAVY RAINS AT THE RATE OF 2-3 INCHES PER HOUR WITH HIGHER AMOUNTS IN NORTH EASTERN SPINK COUNTY...AND EXTREME WESTERN BROWN COUNTY. WATER STANDING AND OVER SOME COUNTY ROADS HAS BEEN REPORTED BY LAW ENFORCEMENT. USE EXTREME CAUTION IF TRAVELING IN THE AREA. STANDING WATER ON ROADWAYS IS DIFFICULT TO SEE AT NIGHT. KH/RB
Special weather statement, Jul 24, 11:45 PM CDT, 22 minutes before
SPECIAL WEATHER STATEMENT...CORRECTION... NATIONAL WEATHER SERVICE ABERDEEN SD 1145 PM CDT THU JUL 24 1997 SDZ006-011-018-021-250700- BROWN-DAY-GRANT-SPINK- INCLUDING THE CITIES OF...ABERDEEN...WEBSTER...REDFIELD...MILBANK 1145 PM CDT THU JUL 24 1997 ...VERY HEAVY RAINS THROUGH 200 AM CDT... A SYSTEM OF VERY SLOW MOVING THUNDERSTORMS IS PRODUCING HEAVY RAINS AT THE RATE OF 2-3 INCHES PER HOUR WITH HIGHER AMOUNTS IN NORTH EASTERN SPINK COUNTY...AND EXTREME EASTERN BROWN COUNTY. WATER STANDING AND OVER SOME COUNTY ROADS HAS BEEN REPORTED BY LAW ENFORCEMENT. USE EXTREME CAUTION IF TRAVELING IN THE AREA. STANDING WATER ON ROADWAYS IS DIFFICULT TO SEE AT NIGHT. HARDING
Special weather statement, Jul 24, 11:46 PM CDT, 21 minutes before
SPECIAL WEATHER STATEMENT...CORRECTION... NATIONAL WEATHER SERVICE ABERDEEN SD 1145 PM CDT THU JUL 24 1997 SDZ006-011-018-021-250700- BROWN-DAY-GRANT-SPINK- INCLUDING THE CITIES OF...ABERDEEN...WEBSTER...REDFIELD...MILBANK 1145 PM CDT THU JUL 24 1997 ...VERY HEAVY RAINS THROUGH 200 AM CDT... A SYSTEM OF VERY SLOW MOVING THUNDERSTORMS IS PRODUCING HEAVY RAINS AT THE RATE OF 2-3 INCHES PER HOUR WITH HIGHER AMOUNTS IN NORTH EASTERN SPINK COUNTY...AND EXTREME EASTERN BROWN COUNTY. WATER STANDING AND OVER SOME COUNTY ROADS HAS BEEN REPORTED BY LAW ENFORCEMENT. USE EXTREME CAUTION IF TRAVELING IN THE AREA. STANDING WATER ON ROADWAYS IS DIFFICULT TO SEE AT NIGHT. HARDING
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 8:36 PM CDT | Severe Thunderstorm Warning | ABR | Jones | 64 min |
| Jul 24, 9:07 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Spink | 63 min |
| Jul 24, 9:45 PM CDT | Tornado Warning | ABR | Clark | 30 min |
| Jul 24, 9:51 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Hamlin | 94 min |
| Jul 24, 11:21 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 34 min |
| Jul 25, 12:14 AM CDT | Flash Flood Warning | ABR | Clark, Codington, Deuel, Hamlin | 3 hr |
| Jul 25, 4:37 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, McPherson | 58 min |
| Jul 25, 4:51 PM CDT | Tornado Warning | ABR | McPherson | 44 min |
| Jul 25, 5:37 PM CDT | Tornado Warning | ABR | Edmunds, McPherson | 58 min |
| Jul 25, 6:22 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 63 min |
| Jul 25, 6:36 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds | 64 min |
| Jul 25, 6:45 PM CDT | Tornado Warning | ABR | Edmunds | 50 min |
| Jul 25, 6:56 PM CDT | Tornado Warning | ABR | Brown | 34 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1997Every 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.