Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 73, NWS Twin Cities, MN

June 17, 2018Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 2018, 12:22 PM CDT for Morrison County, Todd County, Minnesota. It was in force for 38 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 17, 2018, 12:22 PM CDT (17:22 UTC)
Expired: Jun 17, 2018, 1:00 PM CDT
In force: 38 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Morrison County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 172 km from the middle of the area, began a volume at 17:24 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
Jun 17, 12:38 PM CDT	TSTM WND DMG	7 S Motley, MN	TREE DOWN ON A POWER LINE AND A TREE DOWN ON U.S. HIGHWAY 10. TIME ESTIMATED.

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 12:00Z, 5.4 hours before the alert went out and 171 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: 1067 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 1089 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 175 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

611 
WUUS53 KMPX 171722
SVRMPX
MNC097-153-171800-
/O.NEW.KMPX.SV.W.0073.180617T1722Z-180617T1800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1222 PM CDT SUN JUN 17 2018

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Eastern Todd County in central Minnesota...
  Western Morrison County in central Minnesota...

* Until 100 PM CDT.

* At 1222 PM CDT, a severe thunderstorm was located over Long
  Prairie, or 24 miles west of Little Falls, moving east at 35 mph.

  HAZARD...60 mph wind gusts and half dollar 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...
  Randall around 1255 PM CDT.
  Little Falls and Camp Ripley around 100 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4637 9475 4635 9470 4636 9466 4631 9455
      4633 9441 4629 9435 4627 9434 4621 9440
      4618 9437 4616 9438 4615 9433 4590 9431
      4591 9497 4637 9492
TIME...MOT...LOC 1722Z 254DEG 29KT 4600 9486 

HAIL...1.25IN
WIND...60MPH
 
$$

BORGHOFF

2 follow-up statements

534 
WWUS53 KMPX 171738
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1238 PM CDT SUN JUN 17 2018

MNC097-153-171800-
/O.CON.KMPX.SV.W.0073.000000T0000Z-180617T1800Z/
Todd MN-Morrison MN-
1238 PM CDT SUN JUN 17 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 PM CDT
FOR NORTHEASTERN TODD AND WESTERN MORRISON COUNTIES...

At 1238 PM CDT, severe thunderstorms were located along a line
extending from near Motley to 7 miles northwest of Swanville, moving
east at 30 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.

These severe storms will be near...
  Flensburg around 1255 PM CDT.
  Little Falls and Randall around 100 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

&&

A Tornado Watch remains in effect until 900 PM CDT for central
Minnesota.

LAT...LON 4636 9466 4631 9455 4633 9441 4629 9435
      4627 9434 4621 9440 4618 9437 4616 9438
      4615 9433 4590 9431 4597 9484 4635 9470
TIME...MOT...LOC 1738Z 273DEG 25KT 4631 9460 4601 9472 

HAIL...1.00IN
WIND...60MPH
 
$$

BORGHOFF

585 
WWUS53 KMPX 171758
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1258 PM CDT SUN JUN 17 2018

MNC097-153-171808-
/O.EXP.KMPX.SV.W.0073.000000T0000Z-180617T1800Z/
Todd MN-Morrison MN-
1258 PM CDT SUN JUN 17 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TODD AND WESTERN
MORRISON COUNTIES WILL EXPIRE AT 100 PM CDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.  However gusty winds are still possible with
these thunderstorms.

A Tornado Watch remains in effect until 900 PM CDT for central
Minnesota.

LAT...LON 4636 9466 4631 9455 4633 9441 4629 9435
      4627 9434 4621 9440 4618 9437 4616 9438
      4615 9433 4590 9431 4597 9484 4635 9470
TIME...MOT...LOC 1758Z 254DEG 29KT 4635 9438 4605 9450 

$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 7:16 PM CDT	Special Weather Statement	MPX	Lac qui Parle	44 min
Jun 16, 8:48 PM CDT	Special Weather Statement	MPX	Chippewa, Kandiyohi, Pope	27 min
Jun 16, 9:23 PM CDT	Special Weather Statement	MPX	Stearns	37 min
Jun 16, 10:02 PM CDT	Special Weather Statement	MPX	Douglas	58 min
Jun 16, 10:12 PM CDT	Severe Thunderstorm Warning	MPX	Pope, Stearns	33 min
Jun 16, 10:29 PM CDT	Special Weather Statement	MPX	Stevens	31 min
Jun 16, 10:54 PM CDT	Special Weather Statement	MPX	Todd	36 min
Jun 16, 11:16 PM CDT	Special Weather Statement	MPX	Pope, Todd	29 min
Jun 16, 11:37 PM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	23 min
Jun 17, 1:37 PM CDT	Special Weather Statement	MPX	Mille Lacs	8 min
Jun 17, 1:47 PM CDT	Special Weather Statement	MPX	Mille Lacs	43 min
Jun 17, 2:25 PM CDT	Tornado Warning	MPX	Kanabec	35 min
Jun 17, 2:44 PM CDT	Flash Flood Watch	MPX	Anoka, Chisago, Dakota, Goodhue, Hennepin, Isanti and 6 more	16 hr
Jun 17, 6:59 PM CDT	Special Weather Statement	MPX	Scott	31 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.