Alert archive / North Dakota / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 53, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jun 21, 1999, 7:16 AM CDT for Emmons County, Logan County, McIntosh County, North Dakota. It was in force for 44 min. 3 reports 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
- Jun 21, 1999, 7:16 AM CDT (12:16 UTC)
- Expired
- Jun 21, 1999, 8:00 AM CDT
- In force
- 44 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Emmons County, ND, Logan County, ND, McIntosh County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 21, 7:20 AM CDT | Hail 1.75 | Linton, ND | Percent of yield losses for 35,200 acres of crops ranged from 10 to 45 percent. |
| Jun 21, 7:25 AM CDT | Hail 0.75 | Wishek, ND | |
| Jun 21, 7:50 AM CDT | Hail 1 | Burnstad, ND |
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 nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 0.3 hours before the alert went out and 185 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
- 1247 J/kg
- Mixed-layer CIN
- -275 J/kg
- Mixed-layer LCL
- 827 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 21, 3:30 AM CDT, 3 hours 46 minutes earlier.
Area forecast discussion, Jun 21, 3:30 AM CDT, 3 hours 46 minutes before
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Special weather statement, Jun 21, 1:21 AM CDT, 5 hours 55 minutes before
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</html>Special weather statement, Jun 21, 1:21 AM CDT, 5 hours 55 minutes before
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</html>Special weather statement, Jun 21, 4:30 AM CDT, 2 hours 46 minutes before
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</html>Special weather statement, Jun 21, 4:30 AM CDT, 2 hours 46 minutes before
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</html>The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:50 PM CDT | Severe Thunderstorm Warning | BIS | Golden Valley, Slope | 55 min |
| Jun 20, 9:00 PM CDT | Tornado Warning | BIS | Golden Valley, Slope | 45 min |
| Jun 20, 9:47 PM CDT | Severe Thunderstorm Warning | BIS | Bowman | 58 min |
| Jun 20, 10:00 PM CDT | Tornado Warning | BIS | Bowman | 45 min |
| Jun 20, 10:34 PM CDT | Severe Thunderstorm Warning | BIS | Slope | 26 min |
| Jun 20, 10:43 PM CDT | Severe Thunderstorm Warning | BIS | Bowman | 47 min |
| Jun 21, 2:15 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Oliver | 45 min |
| Jun 21, 2:30 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 60 min |
| Jun 21, 9:24 AM CDT | Severe Thunderstorm Warning | BIS | McIntosh | 66 min |
| Jun 21, 9:35 AM CDT | Severe Thunderstorm Warning | BIS | Logan | 55 min |
| Jun 21, 10:30 AM CDT | Severe Thunderstorm Warning | BIS | McIntosh | 30 min |
| Jun 21, 11:25 AM CDT | Severe Thunderstorm Warning | BIS | Dickey | 30 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1999Every severe thunderstorm warning in 1999
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.