Alert archive / Minnesota / Tornado Warnings in 2004

Tornado Warning 27, NWS Twin Cities, MN

July 13, 2004Redwood County, Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 13, 2004, 4:08 AM CDT for Redwood County, Yellow Medicine 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 13, 2004, 4:08 AM CDT (09:08 UTC)
Expired: Jul 13, 2004, 4:30 AM CDT
In force: 22 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Redwood County, MN, Yellow Medicine County, MN

The radar

The Sioux Falls radar (KFSD), 152 km from the middle of the area, began a volume at 09:09 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, 9.1 hours before the alert went out and 150 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: 1267 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1215 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMPX 130908
TORMPX
MNC127-173-130930-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
401 AM CDT TUE JUL 13 2004

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA
  REDWOOD COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 430 AM CDT

* AT 353 AM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO...22 MILES SOUTHEAST OF GRANITE FALLS...OR ABOUT 11 MILES
  WEST OF REDWOOD FALLS...MOVING SOUTHEAST AT 35 MPH.  THIS WARNING 
REPLACES
  THE SEVERE THUNDERSTORM WARNING THAT WAS IN EFFECT UNTIL 415 AM.

* LOCATIONS IMPACTED INCLUDE...
  GRANITE FALLS.
  BELVIEW.
  REDWOOD FALLS.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4486 9559 4478 9574 4423 9555 4432 9489

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 12:00 AM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	90 min
Jul 13, 1:04 AM CDT	Severe Thunderstorm Warning	MPX	Faribault, Martin	56 min
Jul 13, 1:24 AM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	51 min
Jul 13, 2:36 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa	54 min
Jul 13, 3:19 AM CDT	Severe Thunderstorm Warning	MPX	Redwood, Yellow Medicine	56 min
Jul 13, 4:05 AM CDT	Severe Thunderstorm Warning	MPX	Redwood, Yellow Medicine	25 min

Nearby

Tornado Warnings in Minnesota, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.