Alert archive / Minnesota / Tornado Warnings in 2019

Tornado Warning 36, NWS Twin Cities, MN

July 28, 2019Anoka County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 28, 2019, 4:08 PM CDT for Anoka County, Minnesota. It was in force for 22 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 28, 2019, 4:08 PM CDT (21:08 UTC)
Expired: Jul 28, 2019, 4:30 PM CDT
In force: 22 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Anoka County, MN

The radar

The Minneapolis radar (KMPX), 51 km from the middle of the area, began a volume at 21:07 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.

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 28, 2:51 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.1 hours before the alert went out and 53 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1530 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

978 
WFUS53 KMPX 282108
TORMPX
MNC003-282130-
/O.NEW.KMPX.TO.W.0036.190728T2108Z-190728T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
408 PM CDT Sun Jul 28 2019

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  East central Anoka County in east central Minnesota...

* Until 430 PM CDT.
    
* At 408 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Mounds View, or 12 miles north of Minneapolis,
  moving northeast at 40 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Lino Lakes around 415 PM CDT.

Other locations impacted by this tornadic thunderstorm include Circle
Pines, Blaine Airport, Lexington and Centerville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4516 9302 4512 9311 4512 9323 4514 9325
      4538 9302
TIME...MOT...LOC 2108Z 220DEG 34KT 4513 9318 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

1 follow-up statement

503 
WWUS53 KMPX 282122
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
422 PM CDT Sun Jul 28 2019

MNC003-282130-
/O.CON.KMPX.TO.W.0036.000000T0000Z-190728T2130Z/
Anoka MN-
422 PM CDT Sun Jul 28 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR EAST
CENTRAL ANOKA COUNTY...
    
At 422 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Lino Lakes, or 19 miles north of St. Paul, moving
northeast at 40 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
east central Anoka County, including the following locations...
Centerville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4521 9302 4517 9308 4518 9314 4524 9314
      4538 9302
TIME...MOT...LOC 2122Z 220DEG 34KT 4522 9307 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 3:19 PM CDT	Tornado Warning Tornado observed	MPX	McLeod	41 min
Jul 28, 3:37 PM CDT	Tornado Warning	MPX	Benton, Sherburne	38 min
Jul 28, 4:15 PM CDT	Tornado Warning	MPX	Chisago, Isanti	30 min
Jul 28, 4:25 PM CDT	Tornado Warning	MPX	Chisago, Washington	35 min
Jul 28, 6:34 PM CDT	Special Weather Statement	MPX	McLeod	26 min

Nearby

Tornado Warnings in Minnesota, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.