Alert archive / Minnesota / Tornado Watches in 2010
Tornado Watch 448
The Storm Prediction Center issued this tornado watch at Jul 10, 2010, 4:48 PM CDT for 17 counties in Minnesota. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 10, 2010, 4:48 PM CDT (21:48 UTC)
- Expired
- Jul 10, 2010, 8:04 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Chippewa County, MN, Douglas County, MN, Grant County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Meeker County, MN, Morrison County, MN, Otter Tail County, MN, Pope County, MN, Renville County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Wadena County, MN, Wilkin County, MN, Yellow Medicine County, MN
The radar
The Minneapolis radar (KMPX), 190 km from the middle of the area, began a volume at 21:50 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 4:56 PM CDT | Tornado Warning | FGF | Grant | 64 min |
| Jul 10, 5:02 PM CDT | Tornado Warning | MPX | Douglas | 58 min |
| Jul 10, 5:17 PM CDT | Tornado Warning | MPX | Pope, Stevens | 58 min |
| Jul 10, 5:46 PM CDT | Tornado Warning | FGF | Grant, Otter Tail | 59 min |
| Jul 10, 5:58 PM CDT | Tornado Warning | MPX | Douglas, Pope | 62 min |
| Jul 10, 6:00 PM CDT | Tornado Warning | MPX | Douglas | 60 min |
| Jul 10, 6:06 PM CDT | Tornado Warning | FGF | Otter Tail, Wadena | 54 min |
| Jul 10, 6:26 PM CDT | Tornado Warning | MPX | Stevens | 19 min |
| Jul 10, 6:41 PM CDT | Tornado Warning | FGF | Wadena | 34 min |
| Jul 10, 6:47 PM CDT | Severe Thunderstorm Warning | MPX | Stevens, Swift | 58 min |
| Jul 10, 6:55 PM CDT | Tornado Warning | MPX | Douglas, Pope | 65 min |
| Jul 10, 6:58 PM CDT | Severe Thunderstorm Warning | MPX | Douglas, Todd | 41 min |
| Jul 10, 7:53 PM CDT | Flash Flood Warning | MPX | Pope, Stevens | 2 hr |
| Jul 10, 7:58 PM CDT | Severe Thunderstorm Warning | MPX | Pope | 62 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
Minneapolis, MN (KMPX), launched 12:00Z, 9.8 hours before the alert went out and 187 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
- 578 J/kg
- Mixed-layer CIN
- -115 J/kg
- Mixed-layer LCL
- 1632 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 11:41 AM CDT | Mesoscale Discussion | SPC | Anoka, Carver, Chisago, Dakota, Goodhue, Hennepin and 8 more | 94 min |
| Jul 10, 1:36 PM CDT | Mesoscale Discussion | SPC | Big Stone, Lac qui Parle, Traverse, Wilkin | 114 min |
| Jul 10, 2:27 PM CDT | Severe Thunderstorm Watch | SPC | Big Stone, Traverse | 8 hr |
| Jul 10, 4:03 PM CDT | Mesoscale Discussion | SPC | Big Stone, Chippewa, Douglas, Grant, Kandiyohi, Lac qui Parle and 13 more | 87 min |
| Jul 10, 6:37 PM CDT | Mesoscale Discussion | SPC | Cass, Chippewa, Crow Wing, Douglas, Grant, Kandiyohi and 7 more | 53 min |
| Jul 10, 5:17 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Bennett, Brown, Brule, Buffalo and 34 more | 58 min |
Nearby
Tornado Watches in Minnesota, 2010Every tornado watch in 2010
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.