Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 73, NWS Twin Cities, MN

July 18, 20205 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 18, 2020, 3:03 AM CDT for 5 counties in Minnesota. It was in force for 42 min. 6 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 18, 2020, 3:03 AM CDT (08:03 UTC)
Expired: Jul 18, 2020, 3:45 AM CDT
In force: 42 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Carver County, MN, Dakota County, MN, Hennepin County, MN, Scott County, MN, Washington County, MN

The radar

The Minneapolis radar (KMPX), 41 km from the middle of the area, began a volume at 08:07 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 18, 3:04 AM CDT	TSTM WND GST 59	2 Wsw Eden Prairie, MN	.
Jul 18, 3:04 AM CDT	TSTM WND GST 59	2 Wsw Eden Prairie, MN
Jul 18, 3:05 AM CDT	TSTM WND DMG	1 W Apple Valley, MN	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 W APPLE VALLEY. FOUR TO SIX INCH BRANCHES DOWN.
Jul 18, 3:05 AM CDT	TSTM WND DMG	1 W Apple Valley, MN
Jul 18, 3:12 AM CDT	TSTM WND GST 57	3 W Woodbury, MN	MESONET STATION DW3800 MAPLEWOOD.
Jul 18, 3:15 AM CDT	TSTM WND GST 53	3 S Lakeville, MN	AWOS STATION KLVN LAKEVILLE AP.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 17, 10:25 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 8.1 hours before the alert went out and 43 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: 1995 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1267 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

As transmitted.

799 
WUUS53 KMPX 180803
SVRMPX
MNC019-037-053-139-163-180845-
/O.NEW.KMPX.SV.W.0073.200718T0803Z-200718T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
303 AM CDT Sat Jul 18 2020

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southeastern Hennepin County in east central Minnesota...
  Dakota County in east central Minnesota...
  Scott County in east central Minnesota...
  Southeastern Carver County in east central Minnesota...
  Southwestern Washington County in east central Minnesota...

* Until 345 AM CDT.

* At 303 AM CDT, severe thunderstorms were located along a line
  extending from near Jordan to near St. Paul Park, moving southeast
  at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Cottage Grove, Inver Grove Heights and St. Paul Park around 310 AM 
  CDT.
  Hastings around 320 AM CDT.
  New Prague and Prescott around 325 AM CDT.
  Elko New Market around 335 AM CDT.

Other locations impacted by these severe thunderstorms include
Newport, Vermillion, South St Paul Airport, Lakeville Airport, St
Paul Park, Flying Cloud Airport, Credit River, Hampton, Sunfish and
Fort Snelling State Park.
 
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 4455 9362 4479 9371 4490 9324 4489 9318
      4492 9306 4489 9299 4494 9299 4495 9295
      4479 9279 4475 9281 4471 9273 4463 9273
      4463 9279 4461 9279 4452 9310
TIME...MOT...LOC 0803Z 324DEG 28KT 4471 9366 4487 9299 

HAIL...<.75IN
WIND...60MPH
 
$$

BORGHOFF

2 follow-up statements

529 
WWUS53 KMPX 180824
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
324 AM CDT Sat Jul 18 2020

MNC019-053-163-180832-
/O.CAN.KMPX.SV.W.0073.000000T0000Z-200718T0845Z/
Hennepin MN-Carver MN-Washington MN-
324 AM CDT Sat Jul 18 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HENNEPIN...
SOUTHEASTERN CARVER AND SOUTHWESTERN WASHINGTON COUNTIES IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 600 AM CDT for
south central, southeastern and east central Minnesota.

LAT...LON 4453 9328 4454 9328 4455 9359 4456 9362
      4460 9364 4463 9364 4478 9300 4477 9288
      4475 9285 4475 9282 4471 9273 4463 9274
      4463 9279 4460 9281 4452 9308
TIME...MOT...LOC 0822Z 324DEG 28KT 4459 9354 4475 9287 

$$

MNC037-139-180845-
/O.CON.KMPX.SV.W.0073.000000T0000Z-200718T0845Z/
Dakota MN-Scott MN-
324 AM CDT Sat Jul 18 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR DAKOTA AND SOUTHEASTERN SCOTT COUNTIES...

At 322 AM CDT, severe thunderstorms were located along a line
extending from near New Prague to Hastings, moving southeast at 30
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated. Eden Prairie airport reported a 59 mph 
         gust, Minneapolis/St. Paul International Airport reported a 
         55 mph gust, and Lakeville airport reported a 53 mph gust. 

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

These severe storms will be near...
  Hastings around 330 AM CDT.

Other locations impacted by these severe thunderstorms include
Coates, Vermillion, Castle Rock, Helena, Lakeville Airport, Credit
River, Hampton, Randolph, St Benedict and New Trier.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4453 9328 4454 9328 4455 9359 4456 9362
      4460 9364 4463 9364 4478 9300 4477 9288
      4475 9285 4475 9282 4471 9273 4463 9274
      4463 9279 4460 9281 4452 9308
TIME...MOT...LOC 0822Z 324DEG 28KT 4459 9354 4475 9287 

HAIL...<.75IN
WIND...60MPH
 
$$

BORGHOFF

815 
WWUS53 KMPX 180845
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
345 AM CDT Sat Jul 18 2020

MNC037-139-180855-
/O.EXP.KMPX.SV.W.0073.000000T0000Z-200718T0845Z/
Dakota MN-Scott MN-
345 AM CDT Sat Jul 18 2020

...THE SEVERE THUNDERSTORM WARNING FOR DAKOTA AND SOUTHEASTERN SCOTT
COUNTIES HAS EXPIRED...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been allowed to expire.

A Severe Thunderstorm Watch remains in effect until 600 AM CDT for
south central, southeastern and east central Minnesota.

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 4453 9328 4454 9328 4455 9359 4456 9362
      4460 9364 4463 9364 4478 9300 4477 9288
      4475 9285 4475 9282 4471 9273 4463 9274
      4463 9279 4460 9281 4452 9308
TIME...MOT...LOC 0845Z 324DEG 28KT 4459 9354 4475 9287 

$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 9:08 PM CDT	Special Weather Statement	MPX	Douglas	67 min
Jul 17, 9:22 PM CDT	Severe Thunderstorm Warning	MPX	Todd	53 min
Jul 17, 10:13 PM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	62 min
Jul 17, 10:16 PM CDT	Tornado Warning	MPX	Morrison, Todd	44 min
Jul 17, 10:20 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	55 min
Jul 17, 10:54 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope, Stevens	66 min
Jul 17, 10:58 PM CDT	Severe Thunderstorm Warning	MPX	Mille Lacs, Morrison, Stearns, Todd	77 min
Jul 17, 11:51 PM CDT	Tornado Warning	MPX	Pope, Stearns, Swift	28 min
Jul 17, 11:58 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Kandiyohi, Morrison, Stearns	77 min
Jul 18, 12:13 AM CDT	Special Weather Statement	MPX	Kanabec, Mille Lacs	62 min
Jul 18, 12:26 AM CDT	Severe Thunderstorm Warning	MPX	Benton, Isanti, Meeker, Mille Lacs, Sherburne, Stearns and 1 more	49 min
Jul 18, 12:32 AM CDT	Special Weather Statement	MPX	Lac qui Parle, Swift	43 min
Jul 18, 12:44 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Lac qui Parle, Renville, Swift, Yellow Medicine	61 min
Jul 18, 1:03 AM CDT	Tornado Warning	MPX	Chisago, Isanti, Kanabec	27 min
Jul 18, 1:16 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Stearns	44 min
Jul 18, 1:19 AM CDT	Special Weather Statement	MPX	Anoka, Chisago, Hennepin, Isanti, Wright	56 min
Jul 18, 1:38 AM CDT	Special Weather Statement	MPX	McLeod, Meeker, Redwood, Renville	52 min
Jul 18, 3:43 AM CDT	Special Weather Statement	MPX	Goodhue, Rice	32 min
Jul 18, 4:06 AM CDT	Special Weather Statement	MPX	Watonwan	39 min
Jul 18, 5:09 AM CDT	Special Weather Statement	MPX	Freeborn, Steele, Waseca	66 min
Jul 18, 5:00 PM CDT	Special Weather Statement	MPX	Anoka	30 min
Jul 18, 5:23 PM CDT	Severe Thunderstorm Warning	MPX	Anoka	52 min
Jul 18, 5:48 PM CDT	Tornado Warning	MPX	Anoka	42 min
Jul 18, 6:07 PM CDT	Tornado Warning	MPX	Washington	38 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.