Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 55, NWS Grand Forks, ND

June 1, 1998Otter Tail County, Wilkin County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 1, 1998, 4:13 PM CDT for Otter Tail County, Wilkin County, Minnesota. It was in force for 32 min. 2 reports 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 1, 1998, 4:13 PM CDT (21:13 UTC)
Expired: Jun 1, 1998, 4:45 PM CDT
In force: 32 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

Counties Otter Tail County, MN, Wilkin County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 158 km from the middle of the area, began a volume at 21:14 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 1, 4:15 PM CDT	Hail 0.75	Lawndale, MN
Jun 1, 4:35 PM CDT	Hail 0.75	Pelican Rapids, MN

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 1, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 9.2 hours before the alert went out and 244 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: 1819 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 221 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

878 
WUUS1 KFAR 012114 RRA
SVRFAR
MNC111-167-012145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
413 PM CDT MON JUN 1 1998

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA
  NORTHEASTERN WILKIN COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 445 PM CDT

* AT 412 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM JUST SOUTH OF
  BARNESVILLE 20 MILES SOUTHEAST OF FARGO. THE STORM WAS MOVING EAST
  AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PEILCAN RAPIDS
  LAKE LIZZIE
  PELICAN LAKES

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCED WARNING.

KENNEDY

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.

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 1, 2:40 PM CDT, 1 hour 33 minutes earlier.

Area forecast discussion, Jun 1, 2:40 PM CDT, 1 hour 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
240 PM CDT MON JUN 1 1998

ADAP CONTINUES TO FOCUS MAX INSTABILITY ACRS WCNTRL MN WITH SFC BASED
LI/S TO -4 AND DECENT MSTR CONVERGENCE.  WATCH TIL 02Z LOOKS GD THEN LN
OF STMS CURRENTLY MOVG THRU OTTER TAIL AND WADENA COUNTIES SHOULD EXIT
CWA.  STG CAA FOLLOWS THE CONVECTION WITH TRANSITION INTO A FALL-LIKE
REGIME DURING THE NEXT 24 HRS.  CDFNT RATHER SHALLOW AT FIRST LOOKING
MORE LIKE AN ANAFNT WITH ISENTROPIC LIFT ON THE COLD SIDE OF THE BNDRY.
SWRS LIKELY OVRNIGHT WITH THIS FNTL CONFIGURATION ALG WITH STG NERLY
WNDS.  WILL CLEAN UP ZN MAINLY FOR EXPIRATION OF WATCH AND END OF
EVENING PD. UPDATE OUT BY 930 PM.

 BELLES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 3:12 PM CDT	Severe Thunderstorm Warning	FGF	Clearwater, Hubbard	33 min
Jun 1, 4:45 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	30 min
Jun 1, 5:12 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	33 min
Jun 1, 5:35 PM CDT	Severe Thunderstorm Warning	FGF	Wadena	30 min
Jun 1, 5:47 PM CDT	Severe Thunderstorm Warning	FGF	Hubbard	33 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1998 Every severe thunderstorm warning 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.