Alert archive / South Dakota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 53, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 11, 1987, 2:38 AM CDT for Kingsbury County, South Dakota. It was in force for 67 min.
The area
The counties it named.
The facts
- Issued
- Jul 11, 1987, 2:38 AM CDT (07:38 UTC)
- Expired
- Jul 11, 1987, 3:45 AM CDT
- In force
- 67 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
County Kingsbury County, SD
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Aberdeen, SD (KHON), launched 00:00Z, 7.6 hours before the alert went out and 93 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
- 3304 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1012 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 6.8
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 10, 9:52 PM CDT, 4 hours 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 950 PM CDT FRI JUL 10 1987 ...INTENSE THUNDERSTORMS MOVING THROUGH MARSHALL AND ROBERTS COUNTIES... AT 945 PM CDT RADAR INDICATED INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN WERE MOVING THROUGH EASTERN MARSHALL AND ROBERTS COUNTIES OF NORTHEAST SOUTH DAKOTA. THE STRONGEST STORMS WERE NEAR VEBLEN...70 MILES NORTHEAST OF ABERDEEN...AND NEAR HAMMER...80 MILES NORTHEAST OF ABERDEEN. THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER WITH THESE STORMS...HOWEVER IF YOU LIVE IN THE NORTHEAST SOUTH DAKOTA COUNTIES OF MARSHALL OR ROBERTS YOU SHOULD BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AND BE PREPARED TO SEEK SHELTER UNTIL AdBOUT 1100 PM CDT WHEN THESE STORMS SHOULD MOVE OUT OF SOUTH DAKOTA. KEEFE
Special weather statement, Jul 10, 10:48 PM CDT, 3 hours 50 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 1045 PM CDT FRI JUL 10 1987 ...INTENSE THUNDERSTORM MOVING ACROSS SPINK COUNTY... AT 1040 PM CDT RADAR INDICATED AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN MOVING ACROSS SOUTHERN SPINK COUNTY NEAR REDFIELD...40 MILES SOUTH OF ABERDEEN. THIS STORM WAS MOVING EAST AT 25 MPH. IF YOU LIVE IN SOUTHERN SPINK COUNTY EXPECT SMALL HAIL...STRONG WIND... DANGEROUS LIGHTNING...AND VERY HEAVY RAIN AS THIS STORM MOVES THROUGH YOUR COUNTY. YOU SHOULD REMAIN ALERT TO THE WEATHER CONDITIONS UNTIL ABOUT 1130 PM CDT WHEN THIS STORM SHOULD LEAVE SPINK COUNTY. KEEFE
Local storm report, Jul 11, 12:04 AM CDT, 2 hours 34 minutes before
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</html>The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 7:16 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Potter | 59 min |
| Jul 10, 8:02 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 58 min |
| Jul 10, 8:36 PM CDT | Severe Thunderstorm Warning | ABR | Brown | 54 min |
| Jul 10, 10:22 PM CDT | Severe Thunderstorm Warning | ABR | Marshall, Roberts | 68 min |
| Jul 10, 11:30 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 35 min |
| Jul 11, 2:13 AM CDT | Severe Thunderstorm Warning | ABR | Hamlin, Kingsbury | 62 min |
| Jul 11, 2:19 AM CDT | Severe Thunderstorm Warning | ABR | Deuel, Hamlin | 56 min |
| Jul 11, 2:38 AM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Hamlin | 67 min |
| Jul 11, 5:07 PM CDT | Severe Thunderstorm Warning | ABR | Stanley | 68 min |
| Jul 11, 5:25 PM CDT | Tornado Warning | ABR | Hughes, Stanley, Sully | 35 min |
| Jul 11, 6:26 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Hyde | 64 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1987Every severe thunderstorm warning in 1987
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.