Alert archive / Minnesota / Tornado Warnings in 2010

Tornado Warning 83, NWS Twin Cities, MN

July 27, 20104 counties in Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 27, 2010, 5:16 PM CDT for 4 counties in Minnesota. It was in force for 44 min. 1 report 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 27, 2010, 5:16 PM CDT (22:16 UTC)
Expired: Jul 27, 2010, 6:00 PM CDT
In force: 44 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

Counties Douglas County, MN, Morrison County, MN, Stearns County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 141 km from the middle of the area, began a volume at 22:16 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 27, 5:27 PM CDT	TSTM WND GST 67	2 Se Sauk Centre, MN	MEASURED AT MNDOT AUTOMATED STATION AT MILE POST 128.

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 27, 3:29 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.3 hours before the alert went out and 139 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: 2143 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 832 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 220 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 21.5

Open this sounding in Storm Lab

The text

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

105 
WFUS53 KMPX 272216
TORMPX
MNC041-097-145-153-272300-
/O.NEW.KMPX.TO.W.0083.100727T2216Z-100727T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
516 PM CDT TUE JUL 27 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN TODD COUNTY IN CENTRAL MINNESOTA...
  EXTREME SOUTHWESTERN MORRISON COUNTY IN CENTRAL MINNESOTA...
  EXTREME SOUTHEASTERN DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA...
  NORTHWESTERN STEARNS COUNTY IN CENTRAL MINNESOTA...

* UNTIL 600 PM CDT

* AT 512 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 3 MILES SOUTH OF
  WEST UNION...OR ABOUT 6 MILES WEST OF SAUK CENTRE...AND MOVING EAST
  AT 45 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  SAUK CENTRE...
  MELROSE...
  GREY EAGLE...
  GREY EALGE...
  NORTH SHORE...
  PLEASANT BEACH...
  ST ROSA...
  FREEPORT...
  UPSALA...
  ALBANY...
  HOLDINGFORD...
  AVON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT
STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY
BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT TUESDAY EVENING
FOR CENTRAL MINNESOTA AND NORTHWESTERN WISCONSIN.

&&

LAT...LON 4580 9440 4560 9443 4568 9514 4576 9513
      4576 9515 4586 9513
TIME...MOT...LOC 2216Z 276DEG 37KT 4576 9501

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 3:54 AM CDT	Heat Advisory	MPX	Anoka, Blue Earth, Brown, Carver, Chippewa, Dakota and 24 more	15 hr
Jul 27, 6:41 AM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	49 min
Jul 27, 7:36 AM CDT	Special Weather Statement	MPX	Morrison, Todd	39 min
Jul 27, 8:37 AM CDT	Special Weather Statement	MPX	Morrison, Todd	53 min
Jul 27, 9:13 AM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	32 min
Jul 27, 4:19 PM CDT	Tornado Warning	MPX	Douglas, Pope, Stevens	41 min
Jul 27, 4:28 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	36 min
Jul 27, 4:36 PM CDT	Severe Thunderstorm Warning	MPX	Todd	39 min
Jul 27, 4:42 PM CDT	Tornado Warning	MPX	Morrison	33 min
Jul 27, 4:45 PM CDT	Tornado Warning	MPX	Morrison, Todd	45 min
Jul 27, 5:08 PM CDT	Areal Flood Advisory	MPX	Benton, Douglas, Kanabec, Mille Lacs, Morrison, Pope and 2 more	3 hr
Jul 27, 5:14 PM CDT	Tornado Warning	MPX	Benton, Morrison, Stearns	46 min
Jul 27, 5:21 PM CDT	Special Weather Statement	MPX	Kandiyohi	39 min
Jul 27, 5:35 PM CDT	Special Weather Statement	MPX	Benton, Kanabec, Mille Lacs, Stearns	40 min
Jul 27, 5:40 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Stearns	35 min
Jul 27, 5:45 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Kanabec, Mille Lacs, Morrison	45 min
Jul 27, 5:46 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker	59 min
Jul 27, 6:00 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Mille Lacs, Sherburne, Stearns	45 min
Jul 27, 6:15 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Redwood, Renville, Yellow Medicine	60 min
Jul 27, 6:17 PM CDT	Severe Thunderstorm Warning	MPX	Chisago, Isanti, Kanabec, Mille Lacs	43 min
Jul 27, 6:24 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Isanti, Meeker, Sherburne, Stearns, Wright	51 min
Jul 27, 6:46 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, McLeod, Meeker, Renville, Wright	44 min
Jul 27, 6:51 PM CDT	Special Weather Statement	MPX	Anoka, Chisago, Hennepin, Isanti, Ramsey, Washington and 1 more	54 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.