Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 42, NWS Grand Forks, ND

July 3, 1986Cass County, Traill County, North Dakota; Clay County, Norman County, Polk County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 3, 1986, 10:28 PM CDT for Cass County, Traill County, North Dakota; Clay County, Norman County, Polk County, Minnesota. It was in force for 62 min.

The area

The counties it named.

The facts

Issued: Jul 3, 1986, 10:28 PM CDT (03:28 UTC)
Expired: Jul 3, 1986, 11:30 PM CDT
In force: 62 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

Counties Clay County, MN, Norman County, MN, Polk County, MN, Cass County, ND, Traill County, ND

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.5 hours before the alert went out and 295 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1754 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jul 3, 9:23 PM CDT, 1 hour 5 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
900 PM CDT THU JUL 3 1986

TIME          EVENT
600 PM CDT   1/4 INCH HAIL 13 MILES NORTHWEST AND 7 MILES WEST OF
             LANGDON NORTH DAKOTA.  REPORTED BY CO-OP OBSERVERS IN
             CAVALIER COUNTY.

600 PM CDT   1/2 INCH TO 3/4 INCH HAIL REPORTED BY CO-OP OBSERVER
             8 MILES NORTHEAST OF STARKWEATHER NORTH DAKOTA.

650 PM CDT   GOLFBALL SIZE HAIL REPORTED BY HAM RADIO OPERATOR 2 MILES
             NORTH OF DEVILS LAKE NORTH DAKOTA.

710 PM CDT   1/4 INCH HAIL AT NEKOMA AND UNION IN CAVALIER COUNTY OF
             NORTHEAST NORTH DAKOTA.

740 PM CDT   10 MILES NORTH OF BORDULAC IN FOSTER COUNTY OF NORTH DAKOTA
             LAW ENFORCEMENT OFFICIAL REPORTED MARBLE SIZE HAIL...HEAVY
             RAIN...AND STRONG WINDS.

746 PM CDT   LAW ENFORCEMENT OFFICIAL AT LAKOTA NORTH DAKOTA REPORTED
             PEA SIZE HAIL...HEAVY RAIN...AND GUSTY WINDS.

749 PM CDT   PEA SIZE HAIL...HEAVY RAIN...AND GUSTY WINDS AT CARRINGTON
             NORTH DAKOTA.

705 PM CDT   CO-OP OBSERVER 12 MILES SOUTHWEST OF ADAMS NORTH DAKOTA IN
             WALSH COUNTY REPORTED 70 MPH WINDS.

800 PM CDT   CO-OP OBSERVER AT MCHENzRY NORTH DAKOTA IN FOSTER COUNTY
             REPORTED GOLFBALL SIZE HAIL.

MB

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 3, 8:09 PM CDT	Severe Thunderstorm Warning	FGF	Griggs, Nelson	51 min
Jul 3, 9:01 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Griggs	59 min
Jul 3, 9:43 PM CDT	Tornado Warning	FGF	Traill	47 min
Jul 3, 9:56 PM CDT	Severe Thunderstorm Warning	FGF	Barnes	64 min
Jul 3, 11:56 PM CDT	Severe Thunderstorm Warning	FGF	Richland	64 min
Jul 4, 12:53 AM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	52 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1986 Severe Thunderstorm Warnings in North Dakota, 1986 Every severe thunderstorm warning in 1986

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.