Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 152, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 20, 2018, 6:15 PM CDT for Carver County, Minnesota. It was in force for 15 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
- Sep 20, 2018, 6:15 PM CDT (23:15 UTC)
- Expired
- Sep 20, 2018, 6:30 PM CDT
- In force
- 15 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
County Carver County, MN
The radar
The Minneapolis radar (KMPX), 18 km from the middle of the area, began a volume at 23:15 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 |
|---|---|---|---|
| Sep 20, 3:33 PM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.3 hours before the alert went out and 16 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
- 18 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 461 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 195 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
025
WUUS53 KMPX 202315
SVRMPX
MNC019-202330-
/O.NEW.KMPX.SV.W.0152.180920T2315Z-180920T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
615 PM CDT THU SEP 20 2018
The National Weather Service in The Twin Cities has issued a
* Severe Thunderstorm Warning for...
Central Carver County in east central Minnesota...
* Until 630 PM CDT.
* At 615 PM CDT, a severe thunderstorm was located over Waconia, or
24 miles south of Buffalo, moving east at 50 mph.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Waconia, Minnetrista, Mayer, Cologne and Lake Waconia.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4474 9386 4481 9385 4490 9389 4495 9377
4490 9377 4489 9373 4481 9372 4469 9373
TIME...MOT...LOC 2315Z 256DEG 42KT 4483 9378
HAIL...0.75IN
WIND...70MPH
$$1 follow-up statement
954
WWUS53 KMPX 202323
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
623 PM CDT THU SEP 20 2018
MNC019-202333-
/O.EXP.KMPX.SV.W.0152.000000T0000Z-180920T2330Z/
Carver MN-
623 PM CDT THU SEP 20 2018
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CARVER COUNTY WILL
EXPIRE AT 630 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 1100 PM CDT for east central
Minnesota.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
The Twin Cities.
LAT...LON 4474 9386 4481 9385 4490 9389 4495 9377
4490 9377 4489 9373 4481 9372 4469 9373
TIME...MOT...LOC 2323Z 256DEG 42KT 4485 9368
$$
JLTThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 12:13 PM CDT | Special Weather Statement | MPX | Brown, Nicollet | 32 min |
| Sep 20, 12:53 PM CDT | Special Weather Statement | MPX | Brown | 37 min |
| Sep 20, 1:33 PM CDT | Special Weather Statement | MPX | Le Sueur, Scott | 42 min |
| Sep 20, 1:49 PM CDT | Special Weather Statement | MPX | Dakota | 26 min |
| Sep 20, 2:07 PM CDT | Special Weather Statement | MPX | Rice, Washington | 38 min |
| Sep 20, 2:31 PM CDT | Special Weather Statement | MPX | Ramsey | 119 min |
| Sep 20, 2:46 PM CDT | River Flood Warning | MPX | Redwood | 9 days |
| Sep 20, 3:00 PM CDT | Special Weather Statement | MPX | Yellow Medicine | 30 min |
| Sep 20, 3:24 PM CDT | Special Weather Statement | MPX | Renville | 36 min |
| Sep 20, 4:50 PM CDT | Special Weather Statement | MPX | Ramsey | 85 min |
| Sep 20, 5:21 PM CDT | Special Weather Statement | MPX | Hennepin, Ramsey | 54 min |
| Sep 20, 5:30 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault, Martin, Watonwan | 45 min |
| Sep 20, 5:51 PM CDT | Special Weather Statement | MPX | Carver, Le Sueur, Nicollet, Sibley | 24 min |
| Sep 20, 5:54 PM CDT | Areal Flood Warning | MPX | Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 2 more | 3 hr |
| Sep 20, 5:59 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault, Waseca | 46 min |
| Sep 20, 6:13 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Dakota, Hennepin, Ramsey, Scott | 47 min |
| Sep 20, 6:19 PM CDT | Tornado Warning | MPX | Le Sueur, Rice, Waseca | 41 min |
| Sep 20, 6:23 PM CDT | Severe Thunderstorm Warning | MPX | Freeborn, Le Sueur, Rice, Steele, Waseca | 52 min |
| Sep 20, 6:40 PM CDT | Tornado Warning | MPX | Goodhue, Rice, Steele | 35 min |
| Sep 20, 6:41 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Dakota, Goodhue, Hennepin, Ramsey, Washington | 34 min |
| Sep 20, 6:49 PM CDT | Tornado Warning | MPX | Dakota, Goodhue, Rice | 41 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2018Every severe thunderstorm warning in 2018
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.