Alert archive / Minnesota / Tornado Warnings in 2010
Tornado Warning 88, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Aug 11, 2010, 2:12 PM CDT for Watonwan County, Minnesota. It was in force for 18 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 11, 2010, 2:12 PM CDT (19:12 UTC)
- Expired
- Aug 11, 2010, 2:30 PM CDT
- In force
- 18 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
County Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 125 km from the middle of the area, began a volume at 19:13 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.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 7.2 hours before the alert went out and 123 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
- 898 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 625 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 161 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
893
WFUS53 KMPX 111912
TORMPX
MNC165-111930-
/O.NEW.KMPX.TO.W.0088.100811T1912Z-100811T1930Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
212 PM CDT WED AUG 11 2010
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* TORNADO WARNING FOR...
CENTRAL WATONWAN COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 230 PM CDT
* AT 203 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 4
MILES NORTHWEST OF ST JAMES...OR ABOUT 5 MILES SOUTHWEST OF LA
SALLE. RADAR SHOWED THE SEVERE STORM MOVING SOUTH AT 5 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
ST JAMES...
ECHOLS...
GROGAN...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ENVIRONMENTAL CONDITIONS SUGGEST THAT A SMALL TORNADO IS IMMINENT...
BUT WILL NOT LIKELY BE ON THE GROUND FOR A LONG TIME...OR CAUSE
WIDESPREAD SEVERE DAMAGE.
&&
LAT...LON 4409 9481 4411 9472 4411 9456 4411 9455
4393 9446 4387 9473
TIME...MOT...LOC 1906Z 342DEG 6KT 4403 9465
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 9:20 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Le Sueur, Rice, Scott | 55 min |
| Aug 10, 9:29 PM CDT | Areal Flood Advisory | MPX | Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more | 3 hr |
| Aug 10, 10:54 PM CDT | Flash Flood Warning | MPX | Dakota, Hennepin, Ramsey, Scott, Washington | 3 hr |
Nearby
Tornado Warnings in Minnesota, 2010Every tornado warning in 2010Tornadoes 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.