Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 25, NWS Twin Cities, MN

June 9, 2021Dakota County, Ramsey County, Washington County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 9, 2021, 7:06 PM CDT for Dakota County, Ramsey County, Washington County, Minnesota. It was in force for 24 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 9, 2021, 7:06 PM CDT (00:06 UTC)
Expired: Jun 9, 2021, 7:30 PM CDT
In force: 24 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Dakota County, MN, Ramsey County, MN, Washington County, MN

The radar

The Minneapolis radar (KMPX), 45 km from the middle of the area, began a volume at 00:05 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 9, 7:17 PM CDT	TSTM WND GST 51	2 Ese St. Paul, MN	ASOS STATION KSTP ST. PAUL DWTN AP.

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, 0.1 hours before the alert went out and 48 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: 765 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 2305 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

107 
WUUS53 KMPX 100006
SVRMPX
MNC037-123-163-100030-
/O.NEW.KMPX.SV.W.0025.210610T0006Z-210610T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
706 PM CDT Wed Jun 9 2021

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  North central Dakota County in east central Minnesota...
  Central Washington County in east central Minnesota...
  Ramsey County in east central Minnesota...

* Until 730 PM CDT.

* At 706 PM CDT, a severe thunderstorm was located over St. Paul,
  moving northeast at 25 mph.

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

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Roseville around 715 PM CDT.
  Woodbury around 720 PM CDT.
  Maplewood and Oakdale around 725 PM CDT.

Other locations in the path of this severe thunderstorm include White
Bear Lake, Vadnais Heights, Lake Elmo and Mahtomedi.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4503 9279 4482 9308 4489 9318 4491 9320
      4496 9321 4513 9304 4513 9302 4515 9302
TIME...MOT...LOC 0006Z 213DEG 21KT 4494 9309 

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

Dye

1 follow-up statement

581 
WWUS53 KMPX 100026
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
726 PM CDT Wed Jun 9 2021

MNC037-123-163-100035-
/O.EXP.KMPX.SV.W.0025.000000T0000Z-210610T0030Z/
Dakota MN-Washington MN-Ramsey MN-
726 PM CDT Wed Jun 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL DAKOTA...CENTRAL
WASHINGTON AND RAMSEY COUNTIES WILL EXPIRE AT 730 PM CDT...
                
The storm which prompted the warning has weakened below severe 
limits. Therefore, the warning will be allowed to expire.  However 
gusty winds and heavy rain are still possible with this thunderstorm.

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 4503 9279 4482 9308 4489 9318 4491 9320
      4496 9321 4513 9304 4513 9302 4515 9302
TIME...MOT...LOC 0025Z 213DEG 21KT 4502 9302 

$$

Dye

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:28 PM CDT	Special Weather Statement	MPX	Ramsey	32 min
Jun 9, 7:30 PM CDT	Special Weather Statement	MPX	Benton	30 min
Jun 9, 8:13 PM CDT	Special Weather Statement	MPX	Goodhue	47 min
Jun 9, 8:42 PM CDT	Excessive Heat Warning	MPX	Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more	23 hr
Jun 10, 4:18 AM CDT	Special Weather Statement	MPX	Douglas	42 min
Jun 10, 5:00 AM CDT	Special Weather Statement	MPX	Todd	45 min
Jun 10, 2:22 PM CDT	Special Weather Statement	MPX	Mille Lacs	23 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2021 Every severe thunderstorm warning in 2021

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.