Alert archive / North Dakota / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 624
The Storm Prediction Center issued this severe thunderstorm watch at Jul 2, 2003, 10:50 PM MDT for Fallon County, Richland County, Wibaux County, Montana; 18 counties in North Dakota. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 2003, 10:50 PM MDT (04:50 UTC)
- Expired
- Jul 3, 2003, 3:00 AM MDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 21 counties
Fallon County, MT, Richland County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Burleigh County, ND, Dunn County, ND, Emmons County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND
The radar
The Bismarck radar (KBIS), 101 km from the middle of the area, began a volume at 04:50 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
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 11:06 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 39 min |
| Jul 2, 11:09 PM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 66 min |
| Jul 2, 11:21 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 54 min |
| Jul 2, 11:28 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 47 min |
| Jul 2, 11:29 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 46 min |
| Jul 2, 11:47 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 58 min |
| Jul 3, 12:36 AM MDT | Severe Thunderstorm Warning | BIS | Dunn, Stark | 54 min |
| Jul 3, 1:20 AM MDT | Severe Thunderstorm Warning | BIS | McLean, Mercer, Morton, Oliver | 55 min |
| Jul 3, 2:12 AM MDT | Severe Thunderstorm Warning | BIS | Burleigh, McLean, Sheridan | 63 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 4.8 hours before the alert went out and 105 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
- 1473 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 1755 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 2:28 PM MDT | Mesoscale Discussion | SPC | Fallon | 3 hr |
| Jul 3, 3:24 PM MDT | Mesoscale Discussion | SPC | Custer, Dawson, Fallon, McCone, Prairie, Richland and 1 more | 66 min |
| Jul 2, 6:25 PM MDT | Tornado Watch | SPC | Richland | 6 hr |
| Jul 2, 8:06 PM MDT | Mesoscale Discussion | SPC | Richland | 84 min |
| Jul 2, 10:14 PM MDT | Mesoscale Discussion | SPC | Richland | 61 min |
| Jul 3, 1:19 AM MDT | Mesoscale Discussion | SPC | Benson, Bottineau, Burleigh, Kidder, McHenry, McLean and 11 more | 86 min |
Nearby
Severe Thunderstorm Watches in North Dakota, 2003Severe Thunderstorm Watches in Montana, 2003Every severe thunderstorm watch in 2003
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.