Alert archive / Minnesota / Tornado Warnings in 2010
Tornado Warning 100, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Sep 15, 2010, 6:13 PM CDT for Le Sueur County, Minnesota. It was in force for 32 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 15, 2010, 6:13 PM CDT (23:13 UTC)
- Expired
- Sep 15, 2010, 6:45 PM CDT
- In force
- 32 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
County Le Sueur County, MN
The radar
The Minneapolis radar (KMPX), 60 km from the middle of the area, began a volume at 23:12 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 15, 6:13 PM CDT | HAIL 1 | 2 E St Peter, MN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 15, 2:19 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.2 hours before the alert went out and 59 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
- 732 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 210 m²/s²
- 0-3 km storm-relative helicity
- 302 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
459
WFUS53 KMPX 152313
TORMPX
MNC079-152345-
/O.NEW.KMPX.TO.W.0100.100915T2313Z-100915T2345Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
613 PM CDT WED SEP 15 2010
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* TORNADO WARNING FOR...
LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 645 PM CDT
* AT 608 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS NEAR
KASOTA...OR OVER KASOTA...AND MOVING EAST NORTHEAST AT 35 MPH.
AT 610 PM...A SPOTTER REPORTED A WALL CLOUD JUST NORTH OF MANKATO
WITH THIS STORM.
* LOCATIONS IN THE WARNING INCLUDE...
CLEVELAND...
ST HENRY...
LE CENTER...
KILKENNY...
MONTGOMERY...
OTTAWA...
ST THOMAS...
HEIDELBERG...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT
STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY
BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT WEDNESDAY EVENING
FOR SOUTHWESTERN MINNESOTA.
&&
LAT...LON 4424 9402 4427 9402 4434 9394 4438 9396
4440 9396 4453 9355 4453 9354 4430 9352
4424 9379
TIME...MOT...LOC 2312Z 248DEG 29KT 4430 9393
$$1 follow-up statement
788
WWUS53 KMPX 152330
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
630 PM CDT WED SEP 15 2010
MNC079-152345-
/O.CON.KMPX.TO.W.0100.000000T0000Z-100915T2345Z/
LE SUEUR MN-
630 PM CDT WED SEP 15 2010
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR LE SUEUR
COUNTY...
AT 626 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THE MOST DANGEROUS PART OF THE STORM
WAS LOCATED NEAR ST HENRY...AND MOVING NORTHEAST AT 35 MPH.
LOCATIONS IN THE WARNING INCLUDE...
KILKENNY...MONTGOMERY AND HEIDELBERG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT WEDNESDAY EVENING
FOR SOUTHWESTERN MINNESOTA.
&&
LAT...LON 4424 9379 4442 9386 4453 9355 4453 9354
4430 9353
TIME...MOT...LOC 2331Z 247DEG 30KT 4437 9372
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 2:35 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Kandiyohi, Swift | 19 min |
| Sep 15, 4:24 AM CDT | Special Weather Statement | MPX | Faribault, Martin | 81 min |
| Sep 15, 4:59 PM CDT | Special Weather Statement | MPX | Nicollet | 46 min |
| Sep 15, 5:14 PM CDT | Special Weather Statement | MPX | Blue Earth | 46 min |
| Sep 15, 5:21 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Waseca | 39 min |
| Sep 15, 5:27 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Le Sueur, Nicollet | 48 min |
| Sep 15, 5:43 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Le Sueur, Rice, Waseca | 32 min |
| Sep 15, 5:49 PM CDT | Severe Thunderstorm Warning | MPX | Steele, Waseca | 41 min |
| Sep 15, 6:18 PM CDT | Areal Flood Warning | MPX | Lac qui Parle | 3 hr |
| Sep 15, 6:52 PM CDT | Areal Flood Warning | MPX | Lac qui Parle, Yellow Medicine | 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.