Alert archive / Minnesota / Tornado Warnings in 2011
Tornado Warning 30, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Jul 1, 2011, 4:57 PM CDT for Redwood County, Renville County, Minnesota. It was in force for 33 min. 7 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
- Jul 1, 2011, 4:57 PM CDT (21:57 UTC)
- Expired
- Jul 1, 2011, 5:30 PM CDT
- In force
- 33 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Redwood County, MN, Renville County, MN
The radar
The Minneapolis radar (KMPX), 106 km from the middle of the area, began a volume at 22:00 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 |
|---|---|---|---|
| Jul 1, 4:57 PM CDT | TSTM WND DMG | Redwood Falls, MN | 5 INCH DIAMETER BRANCHES DOWN |
| Jul 1, 4:57 PM CDT | HAIL 0.75 | Redwood Falls, MN | |
| Jul 1, 4:58 PM CDT | TSTM WND GST 78 | Redwood Falls, MN | MEASURED WITH CAR ANEMOMETER. |
| Jul 1, 5:00 PM CDT | HAIL 1.25 | Redwood Falls, MN | |
| Jul 1, 5:07 PM CDT | FUNNEL CLOUD | Franklin, MN | |
| Jul 1, 5:11 PM CDT | TSTM WND GST 63 | Redwood Falls, MN | MEASURED FROM THE REDWOOD FALLS AIRPORT |
| Jul 1, 5:17 PM CDT | TSTM WND DMG | Redwood Falls, MN | NUMEROUS TREES DOWN...SOME AS WIDE AS 2.5 FEET. SEVERAL POWER LINES DOWN...SOME ROOF DAMAGE. ALL REPORTED IN DOWNTOWN AREA. |
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 |
|---|---|---|---|
| Jul 1, 2:08 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.0 hours before the alert went out and 103 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
- 3970 J/kg
- Mixed-layer CIN
- -245 J/kg
- Mixed-layer LCL
- 1089 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
560 WFUS53 KMPX 012157 TORMPX MNC127-129-012230- /O.NEW.KMPX.TO.W.0030.110701T2157Z-110701T2230Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 457 PM CDT FRI JUL 1 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN REDWOOD COUNTY IN SOUTHWEST MINNESOTA... EASTERN RENVILLE COUNTY IN CENTRAL MINNESOTA... * UNTIL 530 PM CDT * AT 455 PM CDT...RADAR WAS TRACKING A SEVERE STORM WITH STRONG ROTATION. THE MOST DANGEROUS PART OF THE STORM WAS NEAR NORTH REDWOOD...MOVING NORTHEAST AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE... REDWOOD FALLS... NORTH REDWOOD... MORTON... BECHYN... FRANKLIN... BIRD ISLAND... HECTOR... FRANKLIN... 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. && LAT...LON 4485 9472 4457 9463 4445 9511 4461 9522 TIME...MOT...LOC 2157Z 245DEG 28KT 4457 9505 $$ JLT
1 follow-up statement
668
WWUS53 KMPX 012205
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
505 PM CDT FRI JUL 1 2011
MNC127-012220-
/O.CAN.KMPX.TO.W.0030.000000T0000Z-110701T2230Z/
REDWOOD MN-
505 PM CDT FRI JUL 1 2011
...THE TORNADO WARNING FOR NORTHEASTERN REDWOOD COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4478 9470 4472 9468 4459 9463 4451 9485
4452 9493 4453 9497 4464 9504
TIME...MOT...LOC 2205Z 242DEG 45KT 4461 9486
$$
MNC129-012230-
/O.CON.KMPX.TO.W.0030.000000T0000Z-110701T2230Z/
RENVILLE MN-
505 PM CDT FRI JUL 1 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL RENVILLE COUNTY
UNTIL 530 PM CDT...
AT 500 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS AND
BRIEF RAIN-WRAPPED TORNADOES. THIS DANGEROUS STORM WAS LOCATED NEAR
MORTON...OR 9 MILES EAST OF REDWOOD FALLS...MOVING NORTHEAST AT 50
MPH.
LOCATIONS IMPACTED INCLUDE...
HECTOR.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.
&&
LAT...LON 4478 9470 4472 9468 4459 9463 4451 9485
4452 9493 4453 9497 4464 9504
TIME...MOT...LOC 2205Z 242DEG 45KT 4461 9486
$$
JLTThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 4:05 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Redwood, Renville, Yellow Medicine | 55 min |
| Jul 1, 4:31 PM CDT | Severe Thunderstorm Warning | MPX | Meeker, Wright | 59 min |
| Jul 1, 4:37 PM CDT | Tornado Warning | MPX | Redwood, Renville | 23 min |
| Jul 1, 4:53 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Kandiyohi, Redwood, Renville, Sibley | 67 min |
| Jul 1, 4:59 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Morrison, Stearns | 61 min |
| Jul 1, 5:13 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, McLeod, Meeker, Renville, Sibley, Stearns and 1 more | 62 min |
| Jul 1, 5:27 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Isanti, Sherburne, Wright | 48 min |
| Jul 1, 5:38 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Kanabec, Mille Lacs, Morrison | 67 min |
| Jul 1, 5:52 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Benton, Hennepin, Isanti, Meeker, Mille Lacs and 3 more | 53 min |
| Jul 1, 6:02 PM CDT | Special Weather Statement | MPX | Carver, Hennepin, Scott | 43 min |
| Jul 1, 6:16 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Morrison, Stearns | 29 min |
| Jul 1, 6:20 PM CDT | Tornado Warning | MPX | Benton, Sherburne, Stearns | 25 min |
| Jul 1, 6:27 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Isanti, Kanabec, Mille Lacs | 63 min |
| Jul 1, 6:42 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Benton, Chisago, Hennepin, Isanti, Kanabec and 5 more | 63 min |
| Jul 1, 6:42 PM CDT | Severe Thunderstorm Warning | MPX | Martin | 33 min |
| Jul 1, 6:56 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Brown, Nicollet | 34 min |
Nearby
Tornado Warnings in Minnesota, 2011Every tornado warning in 2011Tornadoes 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.