Alert archive / Minnesota / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 532

June 27, 199724 counties in Minnesota; 7 counties in North Dakota; Burnett County, Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Jun 27, 1997, 10:45 PM CDT for 24 counties in Minnesota; 7 counties in North Dakota; Burnett County, Wisconsin. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 27, 1997, 10:45 PM CDT (03:45 UTC)
Expired
Jun 28, 1997, 4:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 32 counties

Aitkin County, MN, Becker County, MN, Beltrami County, MN, Carlton County, MN, Cass County, MN, Clay County, MN, Clearwater County, MN, Crow Wing County, MN, Hubbard County, MN, Itasca County, MN, Kanabec County, MN, Mahnomen County, MN, Mille Lacs County, MN, Morrison County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Pine County, MN, Polk County, MN, Red Lake County, MN, Saint Louis County, MN, Todd County, MN, Wadena County, MN, Wilkin County, MN, Cass County, ND, Grand Forks County, ND, Ransom County, ND, Richland County, ND, Steele County, ND, Traill County, ND, Walsh County, ND, Burnett County, WI

The radar

The Fargo/Grand Forks radar (KMVX), 131 km from the middle of the area, began a volume at 03:47 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.

Warnings issued inside it

26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 27, 10:49 PM CDTSevere Thunderstorm WarningFGFClearwater26 min
Jun 27, 10:52 PM CDTSevere Thunderstorm WarningFGFGrand Forks38 min
Jun 27, 10:58 PM CDTSevere Thunderstorm WarningFGFBeltrami47 min
Jun 27, 11:00 PM CDTSevere Thunderstorm WarningFGFTraill40 min
Jun 27, 11:15 PM CDTSevere Thunderstorm WarningFGFClearwater, Polk30 min
Jun 27, 11:16 PM CDTSevere Thunderstorm WarningDLHItasca59 min
Jun 27, 11:33 PM CDTSevere Thunderstorm WarningFGFGrand Forks27 min
Jun 27, 11:48 PM CDTSevere Thunderstorm WarningFGFClearwater27 min
Jun 27, 11:54 PM CDTSevere Thunderstorm WarningFGFNorman36 min
Jun 28, 12:08 AM CDTTornado WarningFGFGrand Forks, Steele32 min
Jun 28, 12:13 AM CDTSevere Thunderstorm WarningFGFClearwater, Mahnomen, Polk32 min
Jun 28, 12:32 AM CDTSevere Thunderstorm WarningFGFBeltrami, Hubbard28 min
Jun 28, 12:36 AM CDTSevere Thunderstorm WarningFGFNorman39 min
Jun 28, 12:42 AM CDTSevere Thunderstorm WarningFGFSteele33 min
Jun 28, 12:44 AM CDTSevere Thunderstorm WarningFGFClearwater, Mahnomen, Polk31 min
Jun 28, 1:11 AM CDTFlash Flood WarningFGFClearwater, Mahnomen, Polk3 hr
Jun 28, 1:13 AM CDTSevere Thunderstorm WarningFGFSteele32 min
Jun 28, 1:14 AM CDTSevere Thunderstorm WarningFGFClearwater, Mahnomen31 min
Jun 28, 1:29 AM CDTSevere Thunderstorm WarningFGFHubbard31 min
Jun 28, 1:45 AM CDTSevere Thunderstorm WarningFGFBecker30 min
Jun 28, 1:47 AM CDTSevere Thunderstorm WarningFGFNorman28 min
Jun 28, 1:48 AM CDTSevere Thunderstorm WarningDLHCass57 min
Jun 28, 2:13 AM CDTSevere Thunderstorm WarningFGFNorman32 min
Jun 28, 2:40 AM CDTSevere Thunderstorm WarningFGFMahnomen35 min
Jun 28, 2:54 AM CDTSevere Thunderstorm WarningFGFBecker36 min
Jun 28, 3:29 AM CDTSevere Thunderstorm WarningFGFBecker31 min

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.8 hours before the alert went out and 216 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, International Fa, MN at 00:00Z on 1997-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2313 joules per kilogram.LCLLFCEL10008507005003002001001 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, International Fa, MN at 00:00Z on 1997-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.193958Sfc1 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
2313 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
1650 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.5
Supercell composite
8.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 27, 8:30 PM CDTSevere Thunderstorm WatchSPCBecker, Beltrami, Cass, Clay, Clearwater, Hubbard and 3 more6 hr
Jun 28, 9:00 AM CDTSevere Thunderstorm WatchSPCBecker, Big Stone, Clay, Grant, Otter Tail, Stevens and 3 more6 hr
Jun 28, 12:30 PM CDTSevere Thunderstorm WatchSPCAnoka, Benton, Blue Earth, Brown, Carver, Chippewa and 33 more6 hr
Jun 28, 3:30 PM CDTSevere Thunderstorm WatchSPCChisago, Dakota, Dodge, Fillmore, Freeborn, Goodhue and 8 more6 hr
Jun 28, 6:30 PM CDTSevere Thunderstorm WatchSPCBlue Earth, Dodge, Faribault, Fillmore, Freeborn, Goodhue and 11 more6 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 1997Severe Thunderstorm Watches in North Dakota, 1997Severe Thunderstorm Watches in Wisconsin, 1997Every severe thunderstorm watch 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.