Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 3, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 10, 2011, 12:39 AM CDT for Freeborn County, Minnesota. It was in force for 34 min. 2 reports 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
- Apr 10, 2011, 12:39 AM CDT (05:39 UTC)
- Expired
- Apr 10, 2011, 1:13 AM CDT
- In force
- 34 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Freeborn County, MN
The radar
The Minneapolis radar (KMPX), 145 km from the middle of the area, began a volume at 05:42 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 |
|---|---|---|---|
| Apr 10, 12:58 AM CDT | HAIL 1 | Glenville, MN | |
| Apr 10, 12:58 AM CDT | HAIL 1.25 | Glenville, 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 |
|---|---|---|---|
| Apr 9, 7:42 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 5.7 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 612 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 355 m²/s²
- 0-3 km storm-relative helicity
- 550 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.2
The text
As transmitted, in the capitals the NWS used until 2016.
149
WUUS53 KMPX 100539
SVRMPX
MNC047-100615-
/O.NEW.KMPX.SV.W.0003.110410T0539Z-110410T0615Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1239 AM CDT SUN APR 10 2011
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 115 AM CDT
* AT 1233 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR EMMONS...
OR ABOUT 15 MILES SOUTH OF ALBERT LEA...AND MOVING NORTHEAST AT 25
MPH.
LOCATIONS IN THE WARNING INCLUDE...
HAYWARD...
TWIN LAKES...
GLENVILLE...
MYRTLE...
LONDON...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
REPORT ANY SIGNIFICANT WIND OR HAIL DAMAGE TO THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 4351 9358 4380 9305 4352 9305 4349 9314
4350 9358
TIME...MOT...LOC 0539Z 235DEG 22KT 4347 9342
WIND...HAIL <50MPH 1.00IN
$$
JLT5 follow-up statements
135
WWUS53 KMPX 100545
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1245 AM CDT SUN APR 10 2011
MNC047-100615-
/O.CON.KMPX.SV.W.0003.000000T0000Z-110410T0615Z/
FREEBORN MN-
1245 AM CDT SUN APR 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
FREEBORN COUNTY UNTIL 115 AM CDT...
AT 1242 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS
LOCATED NEAR EMMONS...OR 12 MILES SOUTH OF ALBERT LEA...MOVING
NORTHEAST AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
HAYWARD...TWIN LAKES...GLENVILLE...MYRTLE AND LONDON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.
&&
LAT...LON 4351 9358 4380 9305 4352 9305 4349 9314
4350 9358
TIME...MOT...LOC 0545Z 235DEG 22KT 4349 9338
WIND...HAIL <50MPH 1.00IN
$$
JLT545
WWUS53 KMPX 100551
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1251 AM CDT SUN APR 10 2011
MNC047-100615-
/O.CON.KMPX.SV.W.0003.000000T0000Z-110410T0615Z/
FREEBORN MN-
1251 AM CDT SUN APR 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
FREEBORN COUNTY UNTIL 115 AM CDT...
AT 1247 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL. THIS STORM
WAS LOCATED 6 MILES SOUTHWEST OF GLENVILLE...OR 10 MILES SOUTH OF
ALBERT LEA...MOVING NORTHEAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
HAYWARD...GLENVILLE...MYRTLE AND LONDON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.
&&
LAT...LON 4351 9358 4380 9305 4352 9305 4349 9314
4350 9358
TIME...MOT...LOC 0551Z 237DEG 26KT 4352 9331
WIND...HAIL <50MPH 1.25IN
$$488
WWUS53 KMPX 100600
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
100 AM CDT SUN APR 10 2011
MNC047-100615-
/O.CON.KMPX.SV.W.0003.000000T0000Z-110410T0615Z/
FREEBORN MN-
100 AM CDT SUN APR 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
FREEBORN COUNTY UNTIL 115 AM CDT...
AT 1256 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR MYRTLE...OR 7
MILES SOUTHEAST OF HAYWARD...MOVING NORTHEAST AT 50 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
LONDON AROUND 105 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE WINDOWS...SIDING AND VEHICLES. DAMAGING WINDS
ARE ALSO EXPECTED...WHICH CAN UPROOT TREES AND DOWN POWER LINES. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.
&&
LAT...LON 4351 9358 4380 9305 4352 9305 4349 9314
4350 9358
TIME...MOT...LOC 0600Z 244DEG 43KT 4357 9313
WIND...HAIL 60MPH 1.75IN
$$
JLT252
WWUS53 KMPX 100602
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
102 AM CDT SUN APR 10 2011
MNC047-100615-
/O.CON.KMPX.SV.W.0003.000000T0000Z-110410T0615Z/
FREEBORN MN-
102 AM CDT SUN APR 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
FREEBORN COUNTY UNTIL 115 AM CDT...
AT 1256 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR MYRTLE...OR 7
MILES SOUTHEAST OF HAYWARD...MOVING NORTHEAST AT 50 MPH.
IN ADDITION...AT 100 AM A STORM SPOTTER REPORTED QUARTER SIZE HAIL
IN GLENVILLE WITH THIS STORM.
THIS SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF
SOUTHEASTERN FREEBORN COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.
&&
LAT...LON 4351 9358 4380 9305 4352 9305 4349 9314
4350 9358
TIME...MOT...LOC 0602Z 244DEG 43KT 4358 9310
WIND...HAIL 60MPH 1.00IN
$$
JLT532
WWUS53 KMPX 100613
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
113 AM CDT SUN APR 10 2011
MNC047-100623-
/O.CAN.KMPX.SV.W.0003.000000T0000Z-110410T0615Z/
FREEBORN MN-
113 AM CDT SUN APR 10 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FREEBORN COUNTY
IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.
LAT...LON 4351 9358 4380 9305 4352 9305 4349 9314
4350 9358
TIME...MOT...LOC 0613Z 244DEG 43KT 4363 9293
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 8:59 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 46 min |
| Apr 10, 12:14 AM CDT | Special Weather Statement | MPX | Freeborn | 31 min |
| Apr 10, 1:23 AM CDT | Special Weather Statement | MPX | Blue Earth | 37 min |
| Apr 10, 2:01 PM CDT | Areal Flood Warning | MPX | Brown, Chippewa, Lac qui Parle, Nicollet, Redwood, Renville and 2 more | 72 hr |
| Apr 10, 2:18 PM CDT | Areal Flood Warning | MPX | Carver, Hennepin, McLeod, Wright | 72 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.