Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 215, NWS Twin Cities, MN

August 29, 2001Douglas County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 29, 2001, 7:19 PM CDT for Douglas County, Todd County, Minnesota. It was in force for 41 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Aug 29, 2001, 7:19 PM CDT (00:19 UTC)
Expired: Aug 29, 2001, 8:00 PM CDT
In force: 41 min
Issued by: NWS Twin Cities, MN
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Douglas County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 183 km from the middle of the area, began a volume at 00:22 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
Aug 29, 7:20 PM CDT	Hail 1.25	Miltona, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Aug 29, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.3 hours before the alert went out and 181 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: 1904 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 1004 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 390 m²/s²
0-3 km storm-relative helicity: 463 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 13.8

Open this sounding in Storm Lab

The text

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

836 
WUUS53 KMPX 300020
SVRMSP
MNC041-153-300100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
719 PM CDT WED AUG 29 2001

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA
  TODD COUNTY IN CENTRAL MINNESOTA

* UNTIL 800 PM CDT

* AT 719 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL AND DAMAGING WINDS OVER GARFIELD...OR ABOUT 6 MILES NORTHWEST
  OF ALEXANDRIA...MOVING EAST AT 30 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  LONG PRAIRIE.
  ALEXANDRIA.
  OSAKIS

LAT...LON 4600 9557 4583 9550 4595 9474 4618 9484
 $$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 7:46 PM CDT	Severe Thunderstorm Warning	MPX	Pope, Stearns	44 min
Aug 29, 8:00 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Swift	45 min
Aug 29, 8:29 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	46 min
Aug 29, 8:33 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle	27 min
Aug 29, 10:31 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue, Rice	59 min
Aug 29, 10:31 PM CDT	Severe Thunderstorm Warning	MPX	Steele, Waseca	59 min
Aug 29, 10:46 PM CDT	Severe Thunderstorm Warning	MPX	Washington	29 min
Aug 29, 11:02 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Sherburne	43 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.