Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 85, NWS Twin Cities, MN

June 21, 2017Martin County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 21, 2017, 11:58 PM CDT for Martin County, Minnesota. It was in force for 35 min. 1 report 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
Jun 21, 2017, 11:58 PM CDT (04:58 UTC)
Expired
Jun 22, 2017, 12:33 AM CDT
In force
35 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.25 in
Wind
50.0 mph

County Martin County, MN

The radar

The Minneapolis radar (KMPX), 164 km from the middle of the area, began a volume at 04:58 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

TimeReportWhereRemark
Jun 22, 12:05 AM CDTHAIL 1.25Welcome, MN

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 00:00Z, 5.0 hours before the alert went out and 162 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2017-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2017-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1414 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
205 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

484 
WUUS53 KMPX 220458
SVRMPX
MNC091-220545-
/O.NEW.KMPX.SV.W.0085.170622T0458Z-170622T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1158 PM CDT WED JUN 21 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southern Martin County in south central Minnesota...

* Until 1245 AM CDT

* At 1158 PM CDT, a severe thunderstorm was located near Sherburn, or
  11 miles east of Jackson In Jackson County, moving east at 25 mph.

  HAZARD...Half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Damage to vehicles is expected. 

* This severe thunderstorm will be near,
  Welcome around 1215 AM CDT. 
  Ceylon around 1220 AM CDT. 
  Fairmont around 1230 AM CDT. 
  Iowa Lake around 1240 AM CDT. 

Other locations impacted by this severe thunderstorm include Fairmont
Airport, Granada, Dunnell, Wilbert, Foxlake and Northrop.

This includes Interstate 90 between mile markers 81 and 107.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4350 9458 4350 9468 4358 9486 4368 9486
      4375 9480 4374 9433 4351 9438 4349 9448
TIME...MOT...LOC 0458Z 285DEG 23KT 4368 9478 

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

JPC
3 follow-up statements
968 
WWUS53 KMPX 220512
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1212 AM CDT THU JUN 22 2017

MNC091-220545-
/O.CON.KMPX.SV.W.0085.000000T0000Z-170622T0545Z/
Martin MN-
1212 AM CDT THU JUN 22 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT
FOR CENTRAL MARTIN COUNTY...

At 1212 AM CDT, severe thunderstorms were located along a line
extending from Foxlake to near Iowa Lake, moving east at 35 mph.

HAZARD...Half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

These severe storms will be near...
  Iowa Lake around 1215 AM CDT. 
  Fairmont around 1230 AM CDT. 

Other locations impacted by these severe thunderstorms include
Fairmont Airport, Granada, Foxlake and Northrop.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
The Twin Cities.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4374 9433 4351 9438 4349 9448 4375 9474
TIME...MOT...LOC 0512Z 286DEG 31KT 4372 9465 4353 9443 

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

JPC
690 
WWUS53 KMPX 220525
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1225 AM CDT THU JUN 22 2017

MNC091-220545-
/O.CON.KMPX.SV.W.0085.000000T0000Z-170622T0545Z/
Martin MN-
1225 AM CDT THU JUN 22 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT
FOR SOUTHEASTERN MARTIN COUNTY...

At 1224 AM CDT, severe thunderstorms were located along a line
extending from near Northrop to East Chain, moving east at 30 mph.

HAZARD...Half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

These severe thunderstorms will remain over mainly rural areas of 
southeastern Martin County, including the following locations: 
Fairmont Airport, Granada, Northrop and Imogene.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
The Twin Cities.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4354 9437 4375 9461 4374 9433
TIME...MOT...LOC 0524Z 278DEG 25KT 4373 9453 4354 9431 

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

JPC
214 
WWUS53 KMPX 220533
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1233 AM CDT THU JUN 22 2017

MNC091-220543-
/O.CAN.KMPX.SV.W.0085.000000T0000Z-170622T0545Z/
Martin MN-
1233 AM CDT THU JUN 22 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MARTIN COUNTY IS
CANCELLED...
    
The storms which prompted the warning have weakened below severe 
limits and have exited the warned area. Therefore the warning has 
been cancelled.

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 4354 9437 4375 9461 4374 9433
TIME...MOT...LOC 0531Z 285DEG 23KT 4372 9447 4353 9425 

$$

JPC

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:17 PM CDTSevere Thunderstorm WarningMPXDouglas43 min
Jun 21, 8:00 PM CDTSpecial Weather StatementMPXDouglas45 min
Jun 21, 8:39 PM CDTSpecial Weather StatementMPXStearns66 min
Jun 21, 9:39 PM CDTSpecial Weather StatementMPXPope66 min
Jun 21, 11:49 PM CDTSpecial Weather StatementMPXTodd41 min
Jun 21, 11:55 PM CDTSpecial Weather StatementMPXFaribault, Martin65 min
Jun 22, 12:08 AM CDTSevere Thunderstorm WarningMPXFaribault37 min
Jun 22, 12:32 AM CDTSpecial Weather StatementMPXGoodhue, Rice58 min
Jun 22, 12:46 AM CDTSpecial Weather StatementMPXTodd44 min
Jun 22, 12:54 AM CDTSevere Thunderstorm WarningMPXDouglas, Todd36 min
Jun 22, 1:05 AM CDTSpecial Weather StatementMPXMartin40 min
Jun 22, 4:50 AM CDTSevere Thunderstorm WarningMPXRedwood40 min
Jun 22, 6:35 AM CDTSpecial Weather StatementMPXBlue Earth55 min
Jun 22, 7:23 AM CDTSevere Thunderstorm WarningMPXRice, Steele37 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.