Alert archive / Minnesota / Tornado Warnings in 2002

Tornado Warning 25, NWS Twin Cities, MN

August 16, 2002Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Aug 16, 2002, 8:20 PM CDT for Yellow Medicine County, Minnesota. It was in force for 40 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 16, 2002, 8:20 PM CDT (01:20 UTC)
Expired
Aug 16, 2002, 9:00 PM CDT
In force
40 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Yellow Medicine County, MN

The radar

The Sioux Falls radar (KFSD), 148 km from the middle of the area, began a volume at 01:21 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, 1.3 hours before the alert went out and 174 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.

252 
WFUS53 KMPX 170120
TORMSP
MNC173-170200-

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 900 PM CDT

* AT 818 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO.  IT WAS JUST SOUTHWEST OF CLARKFIELD...OR ABOUT 15 
  MILES WEST OF GRANITE FALLS. IT WAS MOVING EAST-SOUTHEAST AT
  30 MPH.

* SOME LOCATIONS IN THE PATH OF THIS TORNADO INCLUDE...
  CLARKFIELD.
  HANLEY FALLS.
  HAZEL RUN.
  GRANITE FALLS.

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR

LAT...LON 4478 9599 4464 9595 4467 9546 4484 9564

&

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, 8:45 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
Aug 17, 12:32 AM CDTSevere Thunderstorm WarningMPXMorrison58 min

Nearby

Tornado Warnings in Minnesota, 2002Every tornado warning in 2002Tornadoes 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.