Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 164, NWS Twin Cities, MN

July 7, 2002Stearns County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 7, 2002, 8:49 PM CDT for Stearns County, Todd County, Minnesota. It was in force for 41 min. 2 reports 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 7, 2002, 8:49 PM CDT (01:49 UTC)
Expired: Jul 7, 2002, 9:30 PM CDT
In force: 41 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Stearns County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 151 km from the middle of the area, began a volume at 01:52 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 7, 8:50 PM CDT	Hail 0.75	Sauk Centre, MN
Jul 7, 9:10 PM CDT	Hail 0.75	Little Sauk, 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.8 hours before the alert went out and 149 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: 2219 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1249 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

628 
WUUS53 KMPX 080149
SVRMSP
MNC145-153-080230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
849 PM CDT SUN JUL 7 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TODD COUNTY IN CENTRAL MINNESOTA
  NORTHWEST STEARNS COUNTY IN CENTRAL MINNESOTA

* UNTIL 930 PM CDT

* AT 848 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL AND DAMAGING WINDS 3 MILES WEST OF SAUK CENTRE...OR ABOUT 19
  MILES EAST OF GLENWOOD...MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  SAUK CENTRE.
  WEST UNION.
  LITTLE SAUK.
  SAUK LAKE.
  ROUND PRAIRIE.

THIS IS A DANGEROUS STORM WITH DAMAGING WINDS...STAY INDOORS AWAY
FROM WINDOWS.

LAT...LON 4575 9513 4567 9503 4581 9467 4597 9486

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 7:37 PM CDT	Severe Thunderstorm Warning	MPX	Stearns, Wright	38 min
Jul 7, 10:01 PM CDT	Flash Flood Warning	MPX	Douglas, Morrison, Todd	6 hr
Jul 7, 10:41 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Todd	49 min
Jul 8, 4:21 AM CDT	Flash Flood Warning	MPX	Kanabec	114 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2002 Every severe thunderstorm warning in 2002

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.