Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 35, NWS Twin Cities, MN

July 9, 2020Hennepin County, Scott County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 9, 2020, 4:36 AM CDT for Hennepin County, Scott County, Minnesota. It was in force for 24 min. 3 reports 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: Jul 9, 2020, 4:36 AM CDT (09:36 UTC)
Expired: Jul 9, 2020, 5:00 AM CDT
In force: 24 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hennepin County, MN, Scott County, MN

The radar

The Minneapolis radar (KMPX), 7 km from the middle of the area, began a volume at 09:41 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
Jul 9, 4:45 AM CDT	HAIL 1	1 Nw Bloomington, MN
Jul 9, 4:54 AM CDT	HAIL 1	1 S Bloomington, MN
Jul 9, 5:05 AM CDT	HAIL 1	Bloomington, MN	PICTURE ON TWITTER.

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, 9.6 hours before the alert went out and 9 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: 2332 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1764 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

881 
WUUS53 KMPX 090936
SVRMPX
MNC053-139-091000-
/O.NEW.KMPX.SV.W.0035.200709T0936Z-200709T1000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
436 AM CDT Thu Jul 9 2020

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  South central Hennepin County in east central Minnesota...
  Northeastern Scott County in east central Minnesota...

* Until 500 AM CDT.

* At 435 AM CDT, a severe thunderstorm was located over Shakopee, or
  17 miles southwest of Minneapolis, moving northeast at 40 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.

* Locations impacted include...
  Bloomington, Eden Prairie, Minnetonka, Edina, St. Louis Park,
  Shakopee, Richfield, Savage, Chanhassen, Prior Lake, Hopkins and
  Flying Cloud Airport.

This includes  Mystic Lake Casino.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4476 9361 4480 9357 4481 9352 4486 9352
      4495 9341 4482 9324 4470 9355
TIME...MOT...LOC 0935Z 234DEG 35KT 4477 9351 

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

TDH

2 follow-up statements

355 
WWUS53 KMPX 090947
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
447 AM CDT Thu Jul 9 2020

MNC053-139-091000-
/O.CON.KMPX.SV.W.0035.000000T0000Z-200709T1000Z/
Hennepin MN-Scott MN-
447 AM CDT Thu Jul 9 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR SOUTH CENTRAL HENNEPIN AND NORTHEASTERN SCOTT COUNTIES...

At 447 AM CDT, a severe thunderstorm was located over Richfield, or
near Minneapolis, moving northeast at 40 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.

Locations impacted include...
Bloomington, Eden Prairie, Minnetonka, Edina, St. Louis Park,
Shakopee, Richfield, Savage, Prior Lake, Hopkins and Flying Cloud
Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4473 9348 4481 9352 4486 9352 4495 9341
      4482 9324
TIME...MOT...LOC 0947Z 235DEG 37KT 4488 9330 

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

TDH

075 
WWUS53 KMPX 090951
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
451 AM CDT Thu Jul 9 2020

MNC053-139-091001-
/O.EXP.KMPX.SV.W.0035.000000T0000Z-200709T1000Z/
Hennepin MN-Scott MN-
451 AM CDT Thu Jul 9 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL HENNEPIN AND
NORTHEASTERN SCOTT COUNTIES WILL EXPIRE AT 500 AM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

Remember, a Severe Thunderstorm Warning still remains in effect for
Hennepin County until 515 AM CDT.

LAT...LON 4473 9348 4481 9352 4486 9352 4495 9341
      4482 9324
TIME...MOT...LOC 0951Z 234DEG 35KT 4490 9327 

$$

TDH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 7:15 PM CDT	Special Weather Statement	MPX	Todd	30 min
Jul 8, 7:33 PM CDT	Special Weather Statement	MPX	Todd	27 min
Jul 8, 7:44 PM CDT	Special Weather Statement	MPX	Todd	31 min
Jul 8, 8:24 PM CDT	Severe Thunderstorm Warning	MPX	Mille Lacs	24 min
Jul 8, 8:35 PM CDT	Special Weather Statement	MPX	Kanabec	25 min
Jul 8, 9:28 PM CDT	Special Weather Statement	MPX	Kanabec	32 min
Jul 9, 12:57 AM CDT	Special Weather Statement	MPX	Swift	48 min
Jul 9, 1:56 AM CDT	Special Weather Statement	MPX	Stearns	49 min
Jul 9, 2:44 AM CDT	Special Weather Statement	MPX	Mille Lacs, Morrison	46 min
Jul 9, 3:55 AM CDT	Special Weather Statement	MPX	Carver	35 min
Jul 9, 4:05 AM CDT	Special Weather Statement	MPX	Isanti	25 min
Jul 9, 4:12 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Scott, Sibley	33 min
Jul 9, 4:39 AM CDT	Special Weather Statement	MPX	Chisago	51 min
Jul 9, 4:47 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Watonwan	23 min
Jul 9, 4:49 AM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin, Ramsey, Washington	26 min
Jul 9, 4:58 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Scott	14 min
Jul 9, 5:18 AM CDT	Special Weather Statement	MPX	Rice	27 min
Jul 9, 5:20 AM CDT	Special Weather Statement	MPX	Washington	25 min
Jul 9, 5:38 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Washington	24 min
Jul 9, 7:44 AM CDT	Special Weather Statement	MPX	Steele	16 min
Jul 9, 9:55 AM CDT	Special Weather Statement	MPX	Steele	35 min
Jul 9, 11:45 AM CDT	Special Weather Statement	MPX	Freeborn	30 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2020 Every severe thunderstorm warning in 2020

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.