Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 299, NWS Twin Cities, MN

August 17, 2002Morrison County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 17, 2002, 12:32 AM CDT for Morrison County, Minnesota. It was in force for 58 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
Aug 17, 2002, 12:32 AM CDT (05:32 UTC)
Expired
Aug 17, 2002, 1:30 AM CDT
In force
58 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Morrison County, MN

The radar

The Minneapolis radar (KMPX), 154 km from the middle of the area, began a volume at 05:33 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 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, 5.5 hours before the alert went out and 153 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.

018 
WUUS53 KMPX 170532
SVRMSP
MNC097-170630-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1230 AM CDT SAT AUG 17 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MORRISON COUNTY IN CENTRAL MINNESOTA

* UNTIL 130 AM CDT

* AT 1230 AM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM
  MOTLEY TO 10 MILES NORTHWEST OF LONG PRAIRIE...OR ABOUT 15 MILES   
  NORTHWEST OF LITTLE FALLS...MOVING SOUTHEAST AT 40 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  LITTLE FALLS.
  RANDALL.
  FORT RIPLEY.
  ROYALTON.
  HARDING.
  MOTLEY.

THIS IS A DANGEROUS STORM...STAY INDOORS AWAY FROM WINDOWS. SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. TAKE COVER
IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 4633 9463 4587 9460 4587 9395 4623 9379

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, 11:38 PM CDTSevere Thunderstorm WarningMPXMille Lacs27 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

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.