Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 185, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 18, 2017, 6:15 PM CDT for Redwood 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
- Aug 18, 2017, 6:15 PM CDT (23:15 UTC)
- Expired
- Aug 18, 2017, 6:45 PM CDT
- In force
- 30 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Redwood County, MN
The radar
The Sioux Falls radar (KFSD), 122 km from the middle of the area, began a volume at 23:16 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 |
|---|---|---|---|
| Aug 18, 4:51 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.3 hours before the alert went out and 165 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
- 23 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 1090 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -47 m²/s²
- 0-3 km storm-relative helicity
- -32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
419
WUUS53 KMPX 182315
SVRMPX
MNC127-182345-
/O.NEW.KMPX.SV.W.0185.170818T2315Z-170818T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
615 PM CDT FRI AUG 18 2017
The National Weather Service in The Twin Cities has issued a
* Severe Thunderstorm Warning for...
Southwestern Redwood County in southwestern Minnesota...
* Until 645 PM CDT
* At 615 PM CDT, a severe thunderstorm was located 7 miles southeast
of Marshall, moving southeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near,
Walnut Grove around 640 PM CDT.
This includes U.S. Highway 14 between mile markers 44 and 54.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4437 9559 4419 9534 4419 9540 4420 9541
4420 9560 4421 9560
TIME...MOT...LOC 2315Z 306DEG 35KT 4435 9573
HAIL...1.00IN
WIND...60MPH
$$
AMK1 follow-up statement
239
WWUS53 KMPX 182345
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
645 PM CDT FRI AUG 18 2017
MNC127-182355-
/O.EXP.KMPX.SV.W.0185.000000T0000Z-170818T2345Z/
Redwood MN-
645 PM CDT FRI AUG 18 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN REDWOOD COUNTY
HAS EXPIRED...
The storm which prompted the warning has moved out of the area.
Therefore the warning has been allowed to expire.
A severe thunderstorm watch remains in effect until 100 AM CDT for
southwestern Minnesota.
LAT...LON 4437 9559 4419 9534 4419 9540 4420 9541
4420 9560 4421 9560
TIME...MOT...LOC 2345Z 306DEG 35KT 4418 9541
$$
AMKThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 3:54 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 51 min |
| Aug 18, 4:18 PM CDT | Special Weather Statement | MPX | Lac qui Parle | 27 min |
| Aug 18, 4:44 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle, Yellow Medicine | 31 min |
| Aug 18, 4:55 PM CDT | Special Weather Statement | MPX | Redwood | 35 min |
| Aug 18, 5:07 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle, Yellow Medicine | 38 min |
| Aug 18, 5:09 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle, Yellow Medicine | 25 min |
| Aug 18, 5:30 PM CDT | Special Weather Statement | MPX | Redwood | 30 min |
| Aug 18, 5:53 PM CDT | Severe Thunderstorm Warning | MPX | Redwood, Renville | 37 min |
| Aug 18, 6:00 PM CDT | Flash Flood Warning | MPX | Redwood, Yellow Medicine | 4 hr |
| Aug 18, 6:37 PM CDT | Severe Thunderstorm Warning | MPX | Brown | 23 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2017Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.