Alert archive / Minnesota / Tornado Warnings in 1998

Tornado Warning 10, NWS Grand Forks, ND

June 27, 1998Polk County, Minnesota; Grand Forks County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 27, 1998, 8:23 PM CDT for Polk County, Minnesota; Grand Forks County, North Dakota. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 27, 1998, 8:23 PM CDT (01:23 UTC)
Expired: Jun 27, 1998, 8:55 PM CDT
In force: 32 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

Counties Polk County, MN, Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 46 km from the middle of the area, began a volume at 01:24 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.

What was reported inside it

Time	Report	Where	Remark
Jun 27, 8:30 PM CDT	Thunderstorm Wind	Grand Forks, ND	A tree was blown down in the wind.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 1.4 hours before the alert went out and 281 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: 725 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 1251 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 5 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

059 
WFUS1 KFAR 280123 RRA
TORFAR
MNC119-NDC035-280155-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
823 PM CDT SAT JUN 27 1998

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN POLK COUNTY IN NORTHWESTERN MINNESOTA
  EASTERN GRAND FORKS COUNTY IN NORTHEASTERN NORTH DAKOTA

* UNTIL 855 PM CDT

* AT 823 PM CDT A SPOTTER REPORTED A FUNNEL COULD IN GRAND FORKS.
  THE STROM WAS MOVING EAST AT 25 MILES AN HOUR

* THE TORNADO WILL BE NEAR...
  GRAND FORKS NOW.

THIS IS A DANGEROUS STORM.  IF YOU ARE IN THE PATH OF THIS TORNADO
ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 8:59 PM CDT	Severe Thunderstorm Warning	FGF	Becker	31 min
Jun 27, 9:01 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	34 min
Jun 27, 9:17 PM CDT	Severe Thunderstorm Warning	FGF	Clearwater	33 min
Jun 27, 9:29 PM CDT	Severe Thunderstorm Warning	FGF	Becker	31 min
Jun 27, 9:34 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	31 min
Jun 27, 9:56 PM CDT	Severe Thunderstorm Warning	FGF	Wadena	44 min
Jun 27, 9:57 PM CDT	Severe Thunderstorm Warning	FGF	Hubbard	33 min
Jun 27, 10:43 PM CDT	Severe Thunderstorm Warning	FGF	Wadena	32 min
Jun 27, 10:49 PM CDT	Severe Thunderstorm Warning	FGF	Hubbard	36 min

Nearby

Tornado Warnings in Minnesota, 1998 Tornado Warnings in North Dakota, 1998 Every tornado warning in 1998 Tornadoes in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.