Alert archive / Minnesota / Tornado Warnings in 2017
Tornado Warning 37, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Aug 16, 2017, 6:29 PM CDT for McLeod County, Sibley County, Minnesota. It was in force for 46 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
- Aug 16, 2017, 6:29 PM CDT (23:29 UTC)
- Expired
- Aug 16, 2017, 7:15 PM CDT
- In force
- 46 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties McLeod County, MN, Sibley County, MN
The radar
The Minneapolis radar (KMPX), 73 km from the middle of the area, began a volume at 23:30 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 |
|---|---|---|---|
| Aug 16, 6:33 PM CDT | TORNADO | 3 Nne Winthrop, MN | A TORNADO DEVELOPED 3 MILES NNE OF WINTHROP AND FLATTENED CORN BEFORE DESTROYING A STRUCTURALLY COMPROMISED BARN AND PRODUCING SOME TREE DAMAGE. ESTIMATED WIND SPEED 80 MPH. |
| Aug 16, 6:36 PM CDT | TORNADO | 2 N Winthrop, MN | LARGE RAIN WRAPPED TORNADO REPORTED BY TRAINED SPOTTER NW OF GAYLORD. VIEWED FROM INTERSECTION OF CO. RD. 10 AND HWY 15 NORTH OF WINTHROP. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.5 hours before the alert went out and 71 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
- 81 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 638 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 215 m²/s²
- 0-3 km storm-relative helicity
- 208 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
755
WFUS53 KMPX 162329
TORMPX
MNC085-143-170015-
/O.NEW.KMPX.TO.W.0037.170816T2329Z-170817T0015Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
629 PM CDT WED AUG 16 2017
The National Weather Service in The Twin Cities has issued a
* Tornado Warning for...
Northwestern Sibley County in central Minnesota...
Southwestern McLeod County in central Minnesota...
* Until 715 PM CDT
* At 629 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Winthrop, or 20 miles north of New Ulm, moving
northwest at 20 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Brownton around 655 PM CDT.
Stewart around 710 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Fernando and Sumter.
This includes U.S. Highway 212 between mile markers 102 and 114.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4461 9450 4471 9464 4472 9460 4471 9450
4474 9449 4479 9426 4456 9425 4455 9436
TIME...MOT...LOC 2329Z 133DEG 16KT 4459 9432
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
BORGHOFF3 follow-up statements
888
WWUS53 KMPX 162339
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
639 PM CDT WED AUG 16 2017
MNC085-143-170015-
/O.CON.KMPX.TO.W.0037.000000T0000Z-170817T0015Z/
Sibley MN-McLeod MN-
639 PM CDT WED AUG 16 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
NORTHWESTERN SIBLEY AND SOUTHWESTERN MCLEOD COUNTIES...
At 638 PM CDT, a confirmed large and extremely dangerous tornado was
located near Winthrop, or 20 miles south of Hutchinson, moving
northwest at 15 mph.
This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!
HAZARD...Damaging tornado.
SOURCE...Weather spotters confirmed tornado. At 638 pm, a large
tornado was reported northwest of Gaylord on county road
10 and highway 15.
IMPACT...You are in a life-threatening situation. Flying debris may
be deadly to those caught without shelter. Mobile homes
will be destroyed. Considerable damage to homes,
businesses, and vehicles is likely and complete destruction
is possible.
The tornado will be near...
Brownton around 710 PM CDT.
Stewart around 715 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Fernando and Sumter.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4461 9450 4471 9464 4472 9460 4471 9450
4474 9449 4479 9426 4456 9425 4455 9436
TIME...MOT...LOC 2338Z 133DEG 11KT 4460 9433
TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...<.75IN
$$
BORGHOFF563
WWUS53 KMPX 162352
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
652 PM CDT WED AUG 16 2017
MNC085-143-170015-
/O.CON.KMPX.TO.W.0037.000000T0000Z-170817T0015Z/
Sibley MN-McLeod MN-
652 PM CDT WED AUG 16 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
NORTHWESTERN SIBLEY AND SOUTHWESTERN MCLEOD COUNTIES...
At 652 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Fernando, or 17 miles south of Hutchinson, moving
northwest at 15 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Brownton around 705 PM CDT.
Stewart around 715 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Fernando and Sumter.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4461 9450 4472 9460 4471 9450 4474 9449
4479 9426 4463 9425 4458 9439
TIME...MOT...LOC 2352Z 135DEG 14KT 4464 9438
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
BORGHOFF696
WWUS53 KMPX 170013
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
713 PM CDT WED AUG 16 2017
MNC085-143-170023-
/O.EXP.KMPX.TO.W.0037.000000T0000Z-170817T0015Z/
Sibley MN-McLeod MN-
713 PM CDT WED AUG 16 2017
...THE TORNADO WARNING FOR NORTHWESTERN SIBLEY AND SOUTHWESTERN
MCLEOD COUNTIES WILL EXPIRE AT 715 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.
A tornado watch remains in effect until 1000 PM CDT for central
Minnesota.
LAT...LON 4461 9450 4472 9460 4471 9450 4474 9449
4479 9426 4463 9425 4458 9439
TIME...MOT...LOC 0013Z 133DEG 16KT 4470 9447
$$
BORGHOFFThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 4:37 PM CDT | Tornado Warning | MPX | Blue Earth, Nicollet | 23 min |
| Aug 16, 5:09 PM CDT | Tornado Warning | MPX | Nicollet, Sibley | 36 min |
| Aug 16, 5:14 PM CDT | Tornado Warning | MPX | Nicollet | 46 min |
| Aug 16, 5:35 PM CDT | Tornado Warning | MPX | Sibley | 55 min |
| Aug 16, 6:05 PM CDT | Tornado Warning | MPX | Sibley | 40 min |
| Aug 16, 6:31 PM CDT | Tornado Warning | MPX | Le Sueur, Rice | 44 min |
| Aug 16, 6:41 PM CDT | Tornado Warning | MPX | Sibley | 38 min |
Nearby
Tornado Warnings in Minnesota, 2017Every tornado warning in 2017Tornadoes in 2017
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.