Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 97, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 12, 2018, 6:02 PM CDT for Dakota County, Hennepin County, Minnesota. It was in force for 43 min. 3 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 12, 2018, 6:02 PM CDT (23:02 UTC)
- Expired
- Jul 12, 2018, 6:45 PM CDT
- In force
- 43 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Dakota County, MN, Hennepin County, MN
The radar
The Minneapolis radar (KMPX), 27 km from the middle of the area, began a volume at 23:02 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 12, 6:25 PM CDT | TSTM WND DMG | Burnsville, MN | REPORTED VIA SOCIAL MEDIA. |
| Jul 12, 6:30 PM CDT | TSTM WND DMG | Apple Valley, MN | TREES DOWN IN APPLE VALLEY VIA DISPATCH CENTER. |
| Jul 12, 6:32 PM CDT | TSTM WND DMG | Lakeville, MN | TREES DOWN NEAR LAKEVILLE 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 |
|---|---|---|---|
| Jul 12, 5:04 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.0 hours before the alert went out and 30 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
- 745 J/kg
- Mixed-layer CIN
- -244 J/kg
- Mixed-layer LCL
- 1291 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 387 m²/s²
- 0-3 km storm-relative helicity
- 437 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.3
The text
As transmitted.
738
WUUS53 KMPX 122302
SVRMPX
MNC037-053-122345-
/O.NEW.KMPX.SV.W.0097.180712T2302Z-180712T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
602 PM CDT THU JUL 12 2018
The National Weather Service in The Twin Cities has issued a
* Severe Thunderstorm Warning for...
Southeastern Hennepin County in east central Minnesota...
Northwestern Dakota County in east central Minnesota...
* Until 645 PM CDT.
* At 601 PM CDT, a severe thunderstorm was located over Flying Cloud
Airport, or 11 miles southwest of Minneapolis, moving east at 25
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Minneapolis, St. Paul, Bloomington, Eagan, Burnsville, Lakeville,
Apple Valley, Edina, Richfield, Inver Grove Heights, Savage and
Rosemount.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4468 9332 4479 9333 4478 9336 4479 9337
4490 9337 4491 9320 4489 9318 4492 9313
4492 9305 4490 9303 4461 9308
TIME...MOT...LOC 2301Z 284DEG 20KT 4482 9341
HAIL...<.75IN
WIND...60MPH
$$1 follow-up statement
234
WWUS53 KMPX 122334
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
634 PM CDT THU JUL 12 2018
MNC053-122344-
/O.CAN.KMPX.SV.W.0097.000000T0000Z-180712T2345Z/
Hennepin MN-
634 PM CDT THU JUL 12 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HENNEPIN COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until midnight CDT for
east central Minnesota.
LAT...LON 4468 9332 4482 9325 4484 9321 4487 9320
4492 9313 4492 9305 4490 9303 4461 9308
TIME...MOT...LOC 2334Z 284DEG 20KT 4477 9316
$$
MNC037-122345-
/O.CON.KMPX.SV.W.0097.000000T0000Z-180712T2345Z/
Dakota MN-
634 PM CDT THU JUL 12 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR NORTHWESTERN DAKOTA COUNTY...
At 634 PM CDT, a severe thunderstorm was located over Apple Valley,
or 11 miles south of St. Paul, moving east at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
St. Paul, Bloomington, Eagan, Burnsville, Lakeville, Apple Valley,
Inver Grove Heights, Rosemount, Farmington, South St. Paul, West St.
Paul and Mendota Heights.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4468 9332 4482 9325 4484 9321 4487 9320
4492 9313 4492 9305 4490 9303 4461 9308
TIME...MOT...LOC 2334Z 284DEG 20KT 4477 9316
HAIL...<.75IN
WIND...60MPH
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 4:37 AM CDT | Special Weather Statement | MPX | Kanabec | 113 min |
| Jul 12, 6:46 AM CDT | Special Weather Statement | MPX | Kanabec | 3 hr |
| Jul 12, 7:06 AM CDT | Flash Flood Warning | MPX | Kanabec, Mille Lacs | 3 hr |
| Jul 12, 10:26 AM CDT | Areal Flood Warning | MPX | Kanabec, Mille Lacs | 6 hr |
| Jul 12, 10:43 AM CDT | Special Weather Statement | MPX | Isanti, Sherburne | 32 min |
| Jul 12, 11:16 AM CDT | Special Weather Statement | MPX | Chisago | 29 min |
| Jul 12, 2:42 PM CDT | Flash Flood Watch | MPX | Blue Earth, Brown, Faribault, Martin, Nicollet, Redwood and 1 more | 16 hr |
| Jul 12, 4:38 PM CDT | Special Weather Statement | MPX | Anoka | 52 min |
| Jul 12, 4:43 PM CDT | Special Weather Statement | MPX | Hennepin | 47 min |
| Jul 12, 4:46 PM CDT | Special Weather Statement | MPX | Redwood | 74 min |
| Jul 12, 5:10 PM CDT | Special Weather Statement | MPX | Brown, Carver, Hennepin, McLeod, Ramsey, Sibley | 65 min |
| Jul 12, 5:18 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Washington | 27 min |
| Jul 12, 5:27 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 33 min |
| Jul 12, 5:43 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Scott | 47 min |
| Jul 12, 5:54 PM CDT | Special Weather Statement | MPX | Ramsey | 51 min |
| Jul 12, 6:14 PM CDT | Special Weather Statement | MPX | Brown | 46 min |
| Jul 12, 6:27 PM CDT | Special Weather Statement | MPX | Brown | 93 min |
| Jul 12, 6:40 PM CDT | Special Weather Statement | MPX | Dakota | 50 min |
| Jul 12, 6:47 PM CDT | Severe Thunderstorm Warning | MPX | Dakota | 31 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.