Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 293, NWS Twin Cities, MN

August 16, 2002Mille Lacs County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 16, 2002, 11:38 PM CDT for Mille Lacs County, Minnesota. It was in force for 27 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
Aug 16, 2002, 11:38 PM CDT (04:38 UTC)
Expired
Aug 17, 2002, 12:05 AM CDT
In force
27 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Mille Lacs County, MN

The radar

The Minneapolis radar (KMPX), 97 km from the middle of the area, began a volume at 04:38 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

TimeReportWhereRemark
Aug 16, 11:45 PM CDTHail 1Milaca, 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.

IssuedProductOfficeLasted
Aug 16, 10:00 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.6 hours before the alert went out and 96 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2002-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2002-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 244 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1774 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
244 m²/s²
0-3 km storm-relative helicity
375 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

951 
WUUS53 KMPX 170438
SVRMSP
MNC095-170505-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1137 PM CDT FRI AUG 16 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 1205 AM CDT

* AT 1137 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH
  LARGE HAIL 15 MILES WEST OF PRINCETON. IT WAS MOVING EAST AT
  35 MPH. ONE INCH HAIL IS POSSIBLE.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  PRINCETON.
  LONG SIDING.

THIS IS A DANGEROUS STORM WITH LARGE HAIL...STAY INDOORS AWAY FROM
WINDOWS.

LAT...LON 4579 9376 4559 9377 4558 9355 4582 9357

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 7:00 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Sibley60 min
Aug 16, 7:22 PM CDTSevere Thunderstorm WarningMPXRedwood53 min
Aug 16, 7:27 PM CDTSevere Thunderstorm WarningMPXLac qui Parle, Yellow Medicine63 min
Aug 16, 8:20 PM CDTTornado WarningMPXYellow Medicine40 min
Aug 16, 8:45 PM CDTSevere Thunderstorm WarningMPXRenville60 min
Aug 16, 8:54 PM CDTTornado WarningMPXRedwood36 min
Aug 16, 9:00 PM CDTSevere Thunderstorm WarningMPXMcLeod, Sibley45 min
Aug 16, 9:43 PM CDTSevere Thunderstorm WarningMPXMcLeod, Sibley, Wright47 min
Aug 16, 10:10 PM CDTSevere Thunderstorm WarningMPXCarver, Le Sueur, Nicollet, Scott50 min
Aug 16, 10:47 PM CDTSevere Thunderstorm WarningMPXRice43 min
Aug 16, 10:52 PM CDTSevere Thunderstorm WarningMPXCarver, Sibley38 min
Aug 16, 10:53 PM CDTSevere Thunderstorm WarningMPXBenton, Stearns52 min
Aug 16, 11:04 PM CDTSevere Thunderstorm WarningMPXScott41 min
Aug 16, 11:27 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville48 min
Aug 16, 11:28 PM CDTSevere Thunderstorm WarningMPXIsanti, Sherburne62 min
Aug 16, 11:43 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue47 min
Aug 16, 11:48 PM CDTSevere Thunderstorm WarningMPXDouglas, Todd57 min
Aug 16, 11:52 PM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle53 min
Aug 17, 12:02 AM CDTSevere Thunderstorm WarningMPXCarver, McLeod43 min
Aug 17, 12:32 AM CDTSevere Thunderstorm WarningMPXMorrison58 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2002Every 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.