Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 34, NWS Twin Cities, MN

July 9, 2020Carver County, Scott County, Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 9, 2020, 4:12 AM CDT for Carver County, Scott County, Sibley 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: Jul 9, 2020, 4:12 AM CDT (09:12 UTC)
Expired: Jul 9, 2020, 4:45 AM CDT
In force: 33 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Carver County, MN, Scott County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 30 km from the middle of the area, began a volume at 09:13 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.2 hours before the alert went out and 29 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.

865 
WUUS53 KMPX 090912
SVRMPX
MNC019-139-143-090945-
/O.NEW.KMPX.SV.W.0034.200709T0912Z-200709T0945Z/

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

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  East central Sibley County in central Minnesota...
  Western Scott County in east central Minnesota...
  Southeastern Carver County in east central Minnesota...

* Until 445 AM CDT.

* At 412 AM CDT, a severe thunderstorm was located over Belle Plaine,
  or 32 miles southwest of Minneapolis, moving northeast at 40 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.

* Locations impacted include...
  Shakopee, Chaska, Belle Plaine, Jordan, Carver, Cologne, Mn Valley
  State Rec Area and Marystown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4460 9398 4485 9372 4470 9346 4454 9382
      4455 9391
TIME...MOT...LOC 0912Z 223DEG 33KT 4466 9377 

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

TDH

2 follow-up statements

695 
WWUS53 KMPX 090926
SVSMPX

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

MNC139-143-090935-
/O.CAN.KMPX.SV.W.0034.000000T0000Z-200709T0945Z/
Sibley MN-Scott MN-
426 AM CDT Thu Jul 9 2020

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SIBLEY AND
WESTERN SCOTT COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4469 9375 4479 9362 4470 9346 4465 9367
TIME...MOT...LOC 0925Z 233DEG 41KT 4473 9359 

$$

MNC019-090945-
/O.CON.KMPX.SV.W.0034.000000T0000Z-200709T0945Z/
Carver MN-
426 AM CDT Thu Jul 9 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHEASTERN CARVER COUNTY...

At 425 AM CDT, a severe thunderstorm was located over Carver, or 22
miles southwest of Minneapolis, moving northeast at 45 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.

Locations impacted include...
Shakopee, Chaska, Jordan, Carver and Marystown. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4469 9375 4479 9362 4470 9346 4465 9367
TIME...MOT...LOC 0925Z 233DEG 41KT 4473 9359 

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

TDH

620 
WWUS53 KMPX 090936
SVSMPX

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

MNC019-090946-
/O.EXP.KMPX.SV.W.0034.000000T0000Z-200709T0945Z/
Carver MN-
436 AM CDT Thu Jul 9 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CARVER COUNTY
WILL EXPIRE AT 445 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
Scott County until 5 AM CDT.

LAT...LON 4469 9375 4479 9362 4470 9346 4465 9367
TIME...MOT...LOC 0936Z 223DEG 33KT 4479 9351 

$$

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, 4:36 AM CDT	Severe Thunderstorm Warning	MPX	Hennepin, Scott	24 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.