Alert archive / North Dakota / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 527
The Storm Prediction Center issued this severe thunderstorm watch at Jul 24, 2002, 6:50 PM MDT for 14 counties in North Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 2002, 6:50 PM MDT (00:50 UTC)
- Expired
- Jul 25, 2002, 12:00 AM MDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
Counties Adams County, ND, Burleigh County, ND, Eddy County, ND, Emmons County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Sheridan County, ND, Sioux County, ND, Wells County, ND
The radar
The Bismarck radar (KBIS), 46 km from the middle of the area, began a volume at 00:52 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.
Warnings issued inside it
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 7:28 PM MDT | Severe Thunderstorm Warning | BIS | McLean, Mercer, Oliver | 62 min |
| Jul 24, 7:40 PM MDT | Severe Thunderstorm Warning | BIS | Morton | 65 min |
| Jul 24, 7:42 PM MDT | Severe Thunderstorm Warning | BIS | Grant, Hettinger | 63 min |
| Jul 24, 8:22 PM MDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 53 min |
| Jul 24, 8:44 PM MDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 31 min |
| Jul 24, 8:58 PM MDT | Severe Thunderstorm Warning | BIS | Emmons, Sioux | 47 min |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.8 hours before the alert went out and 50 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
- 1695 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1547 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 9:05 PM MDT | Severe Thunderstorm Watch | SPC | Barnes, Cass, Dickey, Emmons, Kidder, LaMoure and 5 more | 4 hr |
| Jul 24, 11:25 PM MDT | Severe Thunderstorm Watch | SPC | Richland | 4 hr |
Nearby
Severe Thunderstorm Watches in North Dakota, 2002Every severe thunderstorm watch in 2002
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.