Alert archive / Minnesota / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 440
The Storm Prediction Center issued this severe thunderstorm watch at Aug 10, 2016, 4:20 PM CDT for 23 counties in Minnesota; 6 counties in Wisconsin. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 10, 2016, 4:20 PM CDT (21:20 UTC)
- Expired
- Aug 10, 2016, 9:42 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 29 counties
Aitkin County, MN, Anoka County, MN, Benton County, MN, Carlton County, MN, Carver County, MN, Cass County, MN, Chippewa County, MN, Chisago County, MN, Crow Wing County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Ramsey County, MN, Sherburne County, MN, Stearns County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Burnett County, WI, Douglas County, WI, Polk County, WI, Saint Croix County, WI, Washburn County, WI
The radar
The Minneapolis radar (KMPX), 89 km from the middle of the area, began a volume at 21:21 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
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 4:21 PM CDT | Severe Thunderstorm Warning | DLH | Cass, Crow Wing | 39 min |
| Aug 10, 4:26 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle, Swift | 34 min |
| Aug 10, 4:32 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 43 min |
| Aug 10, 4:33 PM CDT | Severe Thunderstorm Warning | DLH | Cass, Crow Wing | 42 min |
| Aug 10, 6:21 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 39 min |
| Aug 10, 6:25 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Isanti, Kanabec, Mille Lacs, Sherburne | 35 min |
| Aug 10, 6:33 PM CDT | Severe Thunderstorm Warning | DLH | Pine | 42 min |
| Aug 10, 7:03 PM CDT | Flash Flood Warning | MPX | Kandiyohi, Meeker | 3 hr |
| Aug 10, 7:53 PM CDT | Flash Flood Warning | MPX | Carver, Hennepin, McLeod, Wright | 3 hr |
| Aug 10, 8:08 PM CDT | Flash Flood Warning | MPX | Anoka, Hennepin, Ramsey, Washington | 3 hr |
| Aug 10, 8:11 PM CDT | Flash Flood Warning | MPX | Kandiyohi, Meeker, Renville | 3 hr |
| Aug 10, 8:44 PM CDT | Flash Flood Warning | MPX | Carver, Dakota, Hennepin, Scott, Washington | 3 hr |
| Aug 10, 9:29 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin, Pierce, Saint Croix | 46 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, 9.3 hours before the alert went out and 88 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
- 537 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 910 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 10:19 PM CDT | Severe Thunderstorm Watch | SPC | Big Stone, Chippewa, Clay, Douglas, Grant, Lac qui Parle and 8 more | 8 hr |
| Aug 10, 1:05 AM CDT | Mesoscale Discussion | SPC | Big Stone, Lac qui Parle, Swift, Traverse | 55 min |
| Aug 10, 3:30 AM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Big Stone, Chisago, Douglas, Grant and 20 more | 60 min |
| Aug 10, 4:02 AM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Benton, Cass, Chisago, Crow Wing, Isanti and 7 more | 4 hr |
| Aug 10, 11:19 AM CDT | Mesoscale Discussion | SPC | Becker, Clay, Otter Tail, Wilkin | 2 hr |
| Aug 10, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Big Stone, Clay, Douglas, Grant, Lac qui Parle and 8 more | 7 hr |
| Aug 10, 3:45 PM CDT | Mesoscale Discussion | SPC | Becker, Big Stone, Cass, Chippewa, Clay, Crow Wing and 14 more | 2 hr |
| Aug 10, 3:52 PM CDT | Mesoscale Discussion | SPC | Jackson | 113 min |
| Aug 10, 4:04 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Carver, Chisago, Hennepin, Isanti and 13 more | 26 min |
| Aug 10, 6:54 PM CDT | Mesoscale Discussion | SPC | Aitkin, Anoka, Benton, Carlton, Cass, Chisago and 15 more | 66 min |
Nearby
Severe Thunderstorm Watches in Minnesota, 2016Severe Thunderstorm Watches in Wisconsin, 2016Every severe thunderstorm watch in 2016
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.