Alert archive / Minnesota / Tornado Watches in 2010
Tornado Watch 471
The Storm Prediction Center issued this tornado watch at Jul 14, 2010, 3:50 AM CDT for 21 counties in Minnesota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2010, 3:50 AM CDT (08:50 UTC)
- Expired
- Jul 14, 2010, 9:06 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 65 kt
All 21 counties
Aitkin County, MN, Becker County, MN, Beltrami County, MN, Benton County, MN, Cass County, MN, Clay County, MN, Clearwater County, MN, Crow Wing County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Itasca County, MN, Kanabec County, MN, Mahnomen County, MN, Mille Lacs County, MN, Morrison County, MN, Norman County, MN, Otter Tail County, MN, Todd County, MN, Wadena County, MN, Wilkin County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 154 km from the middle of the area, began a volume at 08:53 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 90%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 70%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 4:29 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Mahnomen, Norman, Otter Tail, Wilkin | 61 min |
| Jul 14, 5:26 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Hubbard, Mahnomen, Norman, Pennington and 2 more | 64 min |
| Jul 14, 5:29 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Clearwater, Hubbard, Mahnomen, Norman and 2 more | 61 min |
| Jul 14, 5:37 AM CDT | Severe Thunderstorm Warning | FGF | Clay, Otter Tail, Wilkin | 53 min |
| Jul 14, 5:46 AM CDT | Tornado Warning | FGF | Otter Tail | 59 min |
| Jul 14, 5:53 AM CDT | Severe Thunderstorm Warning | DLH | Cass, Itasca | 37 min |
| Jul 14, 6:12 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Grant, Otter Tail, Wilkin | 63 min |
| Jul 14, 6:23 AM CDT | Severe Thunderstorm Warning | MPX | Douglas | 67 min |
| Jul 14, 6:26 AM CDT | Severe Thunderstorm Warning | FGF | Hubbard, Wadena | 34 min |
| Jul 14, 6:32 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater | 28 min |
| Jul 14, 6:34 AM CDT | Flash Flood Warning | FGF | Otter Tail | 4 hr |
| Jul 14, 7:01 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Otter Tail and 2 more | 43 min |
| Jul 14, 7:04 AM CDT | Severe Thunderstorm Warning | DLH | Cass, Crow Wing | 56 min |
| Jul 14, 7:18 AM CDT | Tornado Warning | FGF | Wadena | 23 min |
| Jul 14, 7:21 AM CDT | Severe Thunderstorm Warning | MPX | Todd | 39 min |
| Jul 14, 7:29 AM CDT | Severe Thunderstorm Warning | MPX | Douglas | 19 min |
| Jul 14, 7:51 AM CDT | Severe Thunderstorm Warning | MPX | Morrison, Todd | 54 min |
| Jul 14, 7:59 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Cass, Crow Wing, Itasca | 61 min |
| Jul 14, 8:35 AM CDT | Severe Thunderstorm Warning | MPX | Benton, Isanti, Kanabec, Mille Lacs, Sherburne | 40 min |
| Jul 14, 8:36 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Carlton, Itasca, Pine, Saint Louis | 54 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
International Fa, MN (KINL), launched 00:00Z, 8.8 hours before the alert went out and 227 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1455 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 10:58 PM CDT | Severe Thunderstorm Watch | SPC | Kittson, Marshall, Pennington, Polk, Red Lake, Roseau | 7 hr |
| Jul 14, 1:02 AM CDT | Tornado Watch | SPC | Traverse | 6 hr |
| Jul 14, 3:00 AM CDT | Mesoscale Discussion | SPC | Becker, Big Stone, Clay, Clearwater, Douglas, Grant and 14 more | 90 min |
| Jul 14, 6:19 AM CDT | Mesoscale Discussion | SPC | Aitkin, Becker, Beltrami, Benton, Carlton, Cass and 13 more | 86 min |
| Jul 14, 8:26 AM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Brown, Carlton, Carver, Chisago and 21 more | 64 min |
| Jul 14, 9:00 AM CDT | Tornado Watch | SPC | Anoka, Benton, Brown, Carlton, Carver, Chisago and 26 more | 9 hr |
| Jul 14, 10:29 AM CDT | Mesoscale Discussion | SPC | Fillmore, Freeborn, Houston, Mower, Olmsted, Winona | 2 hr |
| Jul 14, 11:43 AM CDT | Tornado Watch | SPC | Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more | 7 hr |
| Jul 14, 12:34 PM CDT | Mesoscale Discussion | SPC | Anoka, Carver, Chisago, Dakota, Goodhue, Hennepin and 9 more | 116 min |
| Jul 14, 2:26 PM CDT | Mesoscale Discussion | SPC | Faribault, Freeborn | 94 min |
| Jul 14, 2:54 PM CDT | Mesoscale Discussion | SPC | Fillmore, Houston, Olmsted, Wabasha, Winona | 96 min |
| Jul 14, 3:33 PM CDT | Mesoscale Discussion | SPC | Aitkin, Benton, Crow Wing, Itasca, Kanabec, Kandiyohi and 5 more | 87 min |
| Jul 14, 3:53 PM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Benton, Carlton, Chisago, Cook, Crow Wing and 11 more | 5 hr |
| Jul 14, 4:38 PM CDT | Severe Thunderstorm Watch | SPC | Anoka, Blue Earth, Brown, Carver, Cottonwood, Dakota and 21 more | 5 hr |
| Jul 14, 6:53 PM CDT | Tornado Watch | SPC | Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more | 8 hr |
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.