Alert archive / North Dakota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 7, NWS Bismarck, ND

May 17, 1998Ward County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at May 17, 1998, 6:02 PM CDT for Ward County, North Dakota. It was in force for 63 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: May 17, 1998, 6:02 PM CDT (23:02 UTC)
Expired: May 17, 1998, 7:05 PM CDT
In force: 63 min
Issued by: NWS Bismarck, ND
Area: Whole counties

County Ward County, ND

What was reported inside it

Time	Report	Where	Remark
May 17, 6:50 PM CDT	Hail 0.75	Minot, ND

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
May 17, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.0 hours before the alert went out and 173 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: 95 J/kg
Mixed-layer CIN: -466 J/kg
Mixed-layer LCL: 1493 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 221 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

381 
WUUS1 KBIS 172305 RRA
SVRBIS
NDC101-180005-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
602 PM CDT SUN MAY 17 1998

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WARD COUNTY IN NORTH CENTRAL NORTH DAKOTA

* UNTIL 705 PM CDT

* AT 559 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 25 MILES SOUTHWEST OF MINOT OR 5 MILES EAST OF
  RYDER... MOVING NORTHEAST 20 MPH. THIS STORM WILL REMAIN IN RURAL
  AREAS.

* THE SEVERE THUNDERSTORM WILL BE NEAR...


SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. GO INSIDE A STURDY BUILDING AND
STAY AWAY FROM WINDOWS

LM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 4:35 PM CDT	Severe Thunderstorm Warning	BIS	Ward	50 min
May 17, 5:08 PM CDT	Tornado Warning	BIS	Ward	32 min
May 17, 5:24 PM CDT	Tornado Warning	BIS	Renville	46 min
May 17, 6:14 PM CDT	Tornado Warning	BIS	Bottineau, Renville	61 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 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.