Alert archive / Minnesota / Tornado Watches in 1999
Tornado Watch 586
The Storm Prediction Center issued this tornado watch at Jul 25, 1999, 11:00 AM CDT for 20 counties in Minnesota; 9 counties in North Dakota; 7 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 25, 1999, 11:00 AM CDT (16:00 UTC)
- Expired
- Jul 25, 1999, 4:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 36 counties
Becker County, MN, Beltrami County, MN, Big Stone County, MN, Clay County, MN, Clearwater County, MN, Grant County, MN, Hubbard County, MN, Koochiching County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, LaMoure County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Traill County, ND, Brown County, SD, Day County, SD, Edmunds County, SD, Grant County, SD, Marshall County, SD, McPherson County, SD, Roberts County, SD
Warnings issued inside it
22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 11:31 AM CDT | Severe Thunderstorm Warning | FGF | Marshall | 29 min |
| Jul 25, 11:52 AM CDT | Severe Thunderstorm Warning | FGF | Roseau | 33 min |
| Jul 25, 11:59 AM CDT | Severe Thunderstorm Warning | FGF | Marshall | 36 min |
| Jul 25, 12:09 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 26 min |
| Jul 25, 12:23 PM CDT | Tornado Warning | FGF | Cass | 32 min |
| Jul 25, 12:26 PM CDT | Severe Thunderstorm Warning | FGF | Pennington | 34 min |
| Jul 25, 12:32 PM CDT | Severe Thunderstorm Warning | FGF | Marshall | 33 min |
| Jul 25, 12:37 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 33 min |
| Jul 25, 12:44 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 36 min |
| Jul 25, 12:48 PM CDT | Tornado Warning | FGF | Cass | 32 min |
| Jul 25, 12:55 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 35 min |
| Jul 25, 1:09 PM CDT | Tornado Warning | FGF | Clay | 36 min |
| Jul 25, 1:18 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Mahnomen, Norman | 32 min |
| Jul 25, 1:31 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 34 min |
| Jul 25, 1:52 PM CDT | Tornado Warning | FGF | Mahnomen | 33 min |
| Jul 25, 1:59 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 36 min |
| Jul 25, 2:11 PM CDT | Severe Thunderstorm Warning | FGF | Becker | 34 min |
| Jul 25, 2:41 PM CDT | Tornado Warning | FGF | Becker | 34 min |
| Jul 25, 2:54 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 36 min |
| Jul 25, 3:11 PM CDT | Severe Thunderstorm Warning | FGF | Clearwater | 34 min |
| Jul 25, 3:20 PM CDT | Severe Thunderstorm Warning | DLH | Itasca, Koochiching | 55 min |
| Jul 25, 3:48 PM CDT | Tornado Warning | DLH | Itasca, Koochiching | 27 min |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 4.0 hours before the alert went out and 213 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
- 1810 J/kg
- Mixed-layer CIN
- -229 J/kg
- Mixed-layer LCL
- 1757 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 7:00 AM CDT | Severe Thunderstorm Watch | SPC | Kittson, Marshall, Polk, Roseau | 5 hr |
| Jul 25, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Becker, Carlton, Cass, Cook, Crow Wing and 9 more | 6 hr |
| Jul 25, 6:45 PM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Anoka, Benton, Carlton, Carver, Chippewa and 19 more | 5 hr |
Nearby
Tornado Watches in Minnesota, 1999Tornado Watches in North Dakota, 1999Tornado Watches in South Dakota, 1999Every tornado watch 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; the sounding from the Mesonet's radiosonde archive.