Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 66, NWS Twin Cities, MN

June 9, 2018Carver County, Scott County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 9, 2018, 6:18 AM CDT for Carver County, Scott County, Minnesota. It was in force for 27 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: Jun 9, 2018, 6:18 AM CDT (11:18 UTC)
Expired: Jun 9, 2018, 6:45 AM CDT
In force: 27 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Carver County, MN, Scott County, MN

The radar

The Minneapolis radar (KMPX), 10 km from the middle of the area, began a volume at 11:20 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 11.3 hours before the alert went out and 10 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 820 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

550 
WUUS53 KMPX 091118
SVRMPX
MNC019-139-091145-
/O.NEW.KMPX.SV.W.0066.180609T1118Z-180609T1145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
618 AM CDT SAT JUN 9 2018

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  North central Scott County in east central Minnesota...
  East central Carver County in east central Minnesota...

* Until 645 AM CDT

* At 618 AM CDT, a severe thunderstorm was located over Carver, or 21
  miles southwest of Minneapolis, moving northeast at 15 mph.

  HAZARD...Half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Damage to vehicles is expected. 

* This severe thunderstorm will be near,
  Chaska around 630 AM CDT. 
  Chanhassen around 640 AM CDT. 
  Shakopee around 645 AM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4472 9362 4476 9368 4486 9354 4474 9348
TIME...MOT...LOC 1118Z 232DEG 13KT 4476 9360 

HAIL...1.25IN
WIND...<50MPH
 
$$

ETA

1 follow-up statement

751 
WWUS53 KMPX 091133
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
633 AM CDT SAT JUN 9 2018

MNC019-139-091145-
/O.CON.KMPX.SV.W.0066.000000T0000Z-180609T1145Z/
Scott MN-Carver MN-
633 AM CDT SAT JUN 9 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 AM CDT
FOR NORTH CENTRAL SCOTT AND EAST CENTRAL CARVER COUNTIES...

At 633 AM CDT, a severe thunderstorm was located over Chaska, or 18
miles southwest of Minneapolis, moving northeast at 15 mph.

HAZARD...Half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

This severe storm will be near...
  Shakopee and Chanhassen around 645 AM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4475 9360 4476 9361 4479 9363 4486 9354
      4478 9350 4475 9354
TIME...MOT...LOC 1133Z 218DEG 11KT 4480 9357 

HAIL...1.25IN
WIND...<50MPH
 
$$

ETA

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 9, 7:45 AM CDT	Special Weather Statement	MPX	Chippewa	30 min
Jun 9, 9:07 AM CDT	Special Weather Statement	MPX	Redwood, Yellow Medicine	68 min
Jun 9, 9:09 AM CDT	Special Weather Statement	MPX	Renville	66 min
Jun 9, 9:20 AM CDT	Special Weather Statement	MPX	Scott	55 min
Jun 9, 10:05 AM CDT	Flash Flood Warning	MPX	Carver	3 hr
Jun 9, 10:42 AM CDT	Special Weather Statement	MPX	Nicollet	48 min
Jun 9, 10:54 AM CDT	Flash Flood Watch	MPX	Blue Earth, Brown, Faribault, Freeborn, Le Sueur, Martin and 5 more	8 hr
Jun 9, 10:55 AM CDT	Special Weather Statement	MPX	Blue Earth, Waseca	65 min
Jun 9, 11:22 AM CDT	Special Weather Statement	MPX	Steele	23 min
Jun 9, 11:28 AM CDT	Special Weather Statement	MPX	Le Sueur	47 min
Jun 9, 11:33 AM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele, Waseca	42 min
Jun 9, 12:04 PM CDT	Special Weather Statement	MPX	Scott	41 min
Jun 9, 12:16 PM CDT	Special Weather Statement	MPX	Steele	44 min
Jun 9, 1:49 PM CDT	Special Weather Statement	MPX	Faribault	26 min
Jun 9, 4:42 PM CDT	River Flood Warning	MPX	Brown	58 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2018 Every 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.