Alert archive / Michigan / Tornado Warnings in 1997

Tornado Warning 2, NWS Marquette, MI

August 15, 1997Dickinson County, Michigan

NWS Marquette, MI issued this tornado warning at Aug 15, 1997, 11:08 PM CDT for Dickinson County, Michigan. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 15, 1997, 11:08 PM CDT (04:08 UTC)
Expired
Aug 15, 1997, 11:40 PM CDT
In force
32 min
Issued by
NWS Marquette, MI
Area
Whole counties

County Dickinson County, MI

The radar

The Marquette radar (KMQT), 63 km from the middle of the area, began a volume at 04:09 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 15, 8:00 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.1 hours before the alert went out and 171 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, Green Bay/Straub, WI at 00:00Z on 1997-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 690 joules per kilogram.LCLEL10008507005003002001001 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, Green Bay/Straub, WI at 00:00Z on 1997-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
690 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
1171 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMQT 160409 RRA
TORMQT
MIC043-160440-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MARQUETTE MI
1208 AM EDT (1108 PM CDT) SAT AUG 16 1997

* TORNADO WARNING FOR
  NORTHERN DICKINSON COUNTY - SOUTH CENTRAL UPPER MICHIGAN

* UNTIL 1140 PM CDT (1240 AM EDT)
 
* SOME LOCATIONS AFFECTED
  SAGOLA
  RANDVILLE
  RALPH

* AT 1105 PM CDT DOPPLER RADAR INDICATED A TORNADO 5 MILES WEST OF
  SAGOLA OR 25 MILES NORTHWEST OF IRON MOUNTAIN. THE TORNADO WAS
  MOVING EAST AT 25 MILES AN HOUR.

* THE STORM WILL BE NEAR SAGOLA AT 1115 PM...NEAR RANDVILLE AT
  1120 PM AND NEAR RALPH AT 1135 PM.

IF YOU ARE IN THE PATH OF THIS TORNADO...TAKE COVER NOW IN THE
LOWEST FLOOR AND INNERMOST ROOM OF A STURDY BUILDING.


KC

The office that day

Everything else NWS Marquette, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 15, 10:35 PM CDTTornado WarningMQTIron30 min

Nearby

Tornado Warnings in Michigan, 1997Every tornado warning in 1997Tornadoes in 1997

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.