Alert archive / Minnesota / Tornado Warnings in 2010

Tornado Warning 56, NWS Twin Cities, MN

July 10, 2010Stevens County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 10, 2010, 6:26 PM CDT for Stevens County, Minnesota. It was in force for 19 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 10, 2010, 6:26 PM CDT (23:26 UTC)
Expired: Jul 10, 2010, 6:45 PM CDT
In force: 19 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

County Stevens County, MN

The radar

The Minneapolis radar (KMPX), 195 km from the middle of the area, began a volume at 23:26 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 10, 4:48 PM CDT	Tornado Watch	SPC	3 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.4 hours before the alert went out and 193 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: 578 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1632 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 4 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

150 
WFUS53 KMPX 102326
TORMPX
MNC149-102345-
/O.NEW.KMPX.TO.W.0056.100710T2326Z-100710T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
626 PM CDT SAT JUL 10 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN STEVENS COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 645 PM CDT

* AT 622 PM CDT...RADAR WAS TRACKING A SEVERE STORM WITH STRONG
  ROTATION. THE MOST DANGEROUS PART OF THE STORM WAS OVER STEVENS
  COUNTY...OR ABOUT 5 MILES NORTHWEST OF CYRUS...AND MOVING EAST AT
  20 MPH.

* LOCATIONS IN THE WARNING INCLUDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT SATURDAY EVENING
FOR WEST CENTRAL MINNESOTA.

&&

LAT...LON 4573 9587 4575 9576 4563 9575 4559 9576
      4559 9574 4554 9574 4555 9586
TIME...MOT...LOC 2326Z 272DEG 16KT 4567 9576

$$

1 follow-up statement

200 
WWUS53 KMPX 102329
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
629 PM CDT SAT JUL 10 2010

MNC149-102345-
/O.CON.KMPX.TO.W.0056.000000T0000Z-100710T2345Z/
STEVENS MN-
629 PM CDT SAT JUL 10 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN STEVENS
COUNTY UNTIL 645 PM CDT...

AT 626 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR CYRUS...OR 8 MILES NORTHEAST OF MORRIS...MOVING EAST
AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...

RURAL AREAS ACROSS EASTERN STEVENS COUNTY...EAST OF MORRIS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4573 9587 4575 9576 4563 9575 4559 9576
      4559 9574 4554 9574 4555 9586
TIME...MOT...LOC 2329Z 272DEG 16KT 4565 9574

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 6:10 AM CDT	Special Weather Statement	MPX	Kanabec	65 min
Jul 10, 6:40 AM CDT	Special Weather Statement	MPX	Kanabec, Mille Lacs	50 min
Jul 10, 7:48 AM CDT	Special Weather Statement	MPX	Kandiyohi	57 min
Jul 10, 8:00 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker	45 min
Jul 10, 10:51 AM CDT	Special Weather Statement	MPX	McLeod	54 min
Jul 10, 3:29 PM CDT	Special Weather Statement	MPX	Dakota	46 min
Jul 10, 5:02 PM CDT	Tornado Warning	MPX	Douglas	58 min
Jul 10, 5:17 PM CDT	Tornado Warning	MPX	Pope, Stevens	58 min
Jul 10, 5:58 PM CDT	Tornado Warning	MPX	Douglas, Pope	62 min
Jul 10, 6:00 PM CDT	Tornado Warning	MPX	Douglas	60 min
Jul 10, 6:47 PM CDT	Severe Thunderstorm Warning	MPX	Stevens, Swift	58 min
Jul 10, 6:55 PM CDT	Tornado Warning	MPX	Douglas, Pope	65 min
Jul 10, 6:58 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Todd	41 min

Nearby

Tornado Warnings in Minnesota, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.