Alert archive / Minnesota / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 367
The Storm Prediction Center issued this severe thunderstorm watch at Jul 9, 2016, 11:36 PM CDT for 16 counties in Minnesota; 8 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 9, 2016, 11:36 PM CDT (04:36 UTC)
- Expired
- Jul 10, 2016, 5:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 24 counties
Big Stone County, MN, Chippewa County, MN, Douglas County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, McLeod County, MN, Meeker County, MN, Pope County, MN, Renville County, MN, Sibley County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Yellow Medicine County, MN, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, Roberts County, SD
The radar
The Aberdeen radar (KABR), 156 km from the middle of the area, began a volume at 04:37 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- 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
- 70%
Warnings issued inside it
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 1:00 AM CDT | Severe Thunderstorm Warning | MPX | Douglas | 45 min |
| Jul 10, 1:24 AM CDT | Severe Thunderstorm Warning | ABR | Big Stone, Traverse | 51 min |
| Jul 10, 1:33 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope, Stearns, Stevens, Todd | 42 min |
| Jul 10, 1:58 AM CDT | Severe Thunderstorm Warning | ABR | Big Stone | 32 min |
| Jul 10, 4:40 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Day, Spink | 15 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
Aberdeen, SD (KABR), launched 00:00Z, 4.6 hours before the alert went out and 163 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
- 2269 J/kg
- Mixed-layer CIN
- -187 J/kg
- Mixed-layer LCL
- 1392 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 193 m²/s²
- 0-3 km storm-relative helicity
- 386 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 20.7
The text
As transmitted.
506
WWUS20 KWNS 100435
SEL7
SPC WW 100435
MNZ000-SDZ000-101000-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 367
NWS STORM PREDICTION CENTER NORMAN OK
1140 PM CDT SAT JUL 9 2016
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WEST CENTRAL MINNESOTA
NORTHEAST SOUTH DAKOTA
* EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1140 PM
UNTIL 500 AM CDT.
* PRIMARY THREATS INCLUDE...
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SUMMARY...THUNDERSTORMS ARE MOVING INTO THE WATCH AREA FROM THE WEST
AND NORTH...AND SHOULD REMAIN INTENSE FOR SEVERAL MORE HOURS.
LOCALLY DAMAGING WIND GUSTS AND LARGE HAIL ARE THE MAIN THREATS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST
NORTHWEST OF WATERTOWN SOUTH DAKOTA TO 70 MILES NORTHEAST OF
REDWOOD FALLS MINNESOTA. FOR A COMPLETE DEPICTION OF THE WATCH
SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 366...
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 31030.
...HARTSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:32 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Clay, Grant, Mahnomen, Norman, Otter Tail and 2 more | 5 hr |
| Jul 9, 10:44 PM CDT | Mesoscale Discussion | SPC | Becker, Big Stone, Clay, Douglas, Grant, Hubbard and 11 more | 91 min |
| Jul 10, 1:23 AM CDT | Mesoscale Discussion | SPC | Big Stone, Chippewa, Douglas, Grant, Kandiyohi, Lac qui Parle and 14 more | 2 hr |
| Jul 10, 3:48 AM CDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Carver, Cottonwood, Dodge, Faribault and 17 more | 87 min |
| Jul 10, 2:19 PM CDT | Mesoscale Discussion | SPC | Harding | 86 min |
| Jul 10, 2:48 PM CDT | Severe Thunderstorm Watch | SPC | Harding, Perkins | 7 hr |
| Jul 10, 3:06 PM CDT | Mesoscale Discussion | SPC | Bennett, Brule, Buffalo, Dewey, Gregory, Haakon and 11 more | 84 min |
Nearby
Severe Thunderstorm Watches in Minnesota, 2016Severe Thunderstorm Watches in South Dakota, 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.