Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 73, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 30, 2011, 11:30 PM CDT for Morrison County, Minnesota. It was in force for 30 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
- May 30, 2011, 11:30 PM CDT (04:30 UTC)
- Expired
- May 31, 2011, 12:00 AM CDT
- In force
- 30 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Morrison County, MN
The radar
The Minneapolis radar (KMPX), 147 km from the middle of the area, began a volume at 04:29 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 30, 8:43 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 4.5 hours before the alert went out and 146 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
- 2145 J/kg
- Mixed-layer CIN
- -246 J/kg
- Mixed-layer LCL
- 1594 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 234 m²/s²
- 0-3 km storm-relative helicity
- 408 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.8
The text
As transmitted, in the capitals the NWS used until 2016.
191
WUUS53 KMPX 310430
SVRMPX
MNC097-310500-
/O.NEW.KMPX.SV.W.0073.110531T0430Z-110531T0500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1130 PM CDT MON MAY 30 2011
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN MORRISON COUNTY IN CENTRAL MINNESOTA...
* UNTIL MIDNIGHT CDT
* AT 1125 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM PILLAGER TO LITTLE
ROCK...AND MOVING EAST AT 50 MPH.
LOCATIONS IN THE WARNING INCLUDE...
LASTRUP...
HARDING...
HILLMAN...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT TUESDAY MORNING
FOR SOUTHERN MINNESOTA.
&&
LAT...LON 4627 9435 4623 9439 4617 9436 4616 9383
4599 9381 4597 9379 4584 9377 4584 9413
4630 9459
TIME...MOT...LOC 0430Z 270DEG 42KT 4629 9434 4585 9401
WIND...HAIL 60MPH <.75IN
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 8:35 PM CDT | Special Weather Statement | MPX | Stevens | 40 min |
| May 30, 8:40 PM CDT | Severe Thunderstorm Warning | MPX | Stevens | 20 min |
| May 30, 8:59 PM CDT | Severe Thunderstorm Warning | MPX | Stevens | 16 min |
| May 30, 9:38 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle, Yellow Medicine | 51 min |
| May 30, 9:57 PM CDT | Severe Thunderstorm Warning | MPX | Douglas | 48 min |
| May 30, 10:11 PM CDT | Special Weather Statement | MPX | Redwood | 79 min |
| May 30, 10:41 PM CDT | Special Weather Statement | MPX | Todd | 49 min |
| May 30, 11:07 PM CDT | Special Weather Statement | MPX | Morrison | 38 min |
| May 30, 11:59 PM CDT | Special Weather Statement | MPX | Kanabec | 31 min |
| May 31, 3:40 AM CDT | Wind Advisory | MPX | Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 36 more | 18 hr |
| May 31, 10:51 AM CDT | River Flood Warning | MPX | Carver, Hennepin, Scott | 70 hr |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2011Every severe thunderstorm warning in 2011
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.