Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 85, NWS Twin Cities, MN

June 30, 2018Kanabec County, Mille Lacs County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 30, 2018, 2:27 AM CDT for Kanabec County, Mille Lacs County, Minnesota. It was in force for 33 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 30, 2018, 2:27 AM CDT (07:27 UTC)
Expired: Jun 30, 2018, 3:00 AM CDT
In force: 33 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Kanabec County, MN, Mille Lacs County, MN

The radar

The Duluth radar (KDLH), 126 km from the middle of the area, began a volume at 07:29 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
Jun 29, 11:56 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 7.5 hours before the alert went out and 129 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: 3333 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 1867 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 233 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

314 
WUUS53 KMPX 300727
SVRMPX
MNC065-095-300800-
/O.NEW.KMPX.SV.W.0085.180630T0727Z-180630T0800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
227 AM CDT SAT JUN 30 2018

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Kanabec County in east central Minnesota...
  Central Mille Lacs County in east central Minnesota...

* Until 300 AM CDT.

* At 226 AM CDT, severe thunderstorms were located along a line
  extending from near Malmo to 8 miles west of Knife Lake to near
  Milaca, moving east at 50 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated. At 213 am a 68 mph wind gust was was 
           reported in Pierz.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Mora, Ogilvie, Grasston, Quamba, Knife Lake, and Warman.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4598 9306 4598 9314 4579 9315 4580 9376
      4598 9352 4598 9344 4615 9343 4616 9341
      4615 9306
TIME...MOT...LOC 0726Z 262DEG 44KT 4628 9344 4598 9348 4583 9365 

HAIL...0.75IN
WIND...60MPH
 
$$

1 follow-up statement

874 
WWUS53 KMPX 300755
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
255 AM CDT SAT JUN 30 2018

MNC065-095-300805-
/O.EXP.KMPX.SV.W.0085.000000T0000Z-180630T0800Z/
Kanabec MN-Mille Lacs MN-
255 AM CDT SAT JUN 30 2018

...THE SEVERE THUNDERSTORM WARNING FOR KANABEC AND CENTRAL MILLE LACS
COUNTIES WILL EXPIRE AT 300 AM CDT...
    
The storms which prompted the warning have weakened below severe 
limits. Therefore, the warning will be allowed to expire.  However 
heavy rain is still occurring with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 700 AM CDT for
east central Minnesota.

LAT...LON 4598 9306 4598 9314 4579 9315 4580 9376
      4598 9352 4598 9344 4615 9343 4616 9341
      4615 9306
TIME...MOT...LOC 0755Z 262DEG 44KT 4633 9295 4603 9299 4588 9316 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 11:25 PM CDT	Special Weather Statement	MPX	Todd	50 min
Jun 29, 11:58 PM CDT	Severe Thunderstorm Warning	MPX	Todd	47 min
Jun 30, 12:05 AM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope	55 min
Jun 30, 12:18 AM CDT	Severe Thunderstorm Warning	MPX	Todd	42 min
Jun 30, 12:43 AM CDT	Severe Thunderstorm Warning	MPX	Stearns, Todd	47 min
Jun 30, 1:00 AM CDT	Special Weather Statement	MPX	Morrison	45 min
Jun 30, 1:06 AM CDT	Severe Thunderstorm Warning	MPX	Morrison	39 min
Jun 30, 1:29 AM CDT	Severe Thunderstorm Warning	MPX	Morrison, Stearns, Todd	46 min
Jun 30, 2:02 AM CDT	Severe Thunderstorm Warning	MPX	Benton, Mille Lacs, Morrison, Stearns	43 min
Jun 30, 2:51 AM CDT	Flash Flood Watch	MPX	Faribault, Freeborn, Martin	18 hr
Jun 30, 2:54 AM CDT	Heat Advisory	MPX	Goodhue	16 hr
Jun 30, 5:25 PM CDT	Special Weather Statement	MPX	Freeborn	50 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.