Alert archive / North Dakota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 89, NWS Bismarck, ND

August 18, 1998Bottineau County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 18, 1998, 6:13 AM CDT for Bottineau County, North Dakota. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 18, 1998, 6:13 AM CDT (11:13 UTC)
Expired: Aug 18, 1998, 7:00 AM CDT
In force: 47 min
Issued by: NWS Bismarck, ND
Area: Whole counties

County Bottineau County, ND

The radar

The Minot AFB radar (KMBX), 44 km from the middle of the area, began a volume at 11:12 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.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 11.2 hours before the alert went out and 225 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: 1875 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 207 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

059 
WUUS1 KBIS 181115 RRA
SVRBIS
NDC009-181200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
613 AM CDT TUE AUG 18 1998

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN BOTTINEAU COUNTY IN NORTH CENTRAL NORTH DAKOTA

* UNTIL 700 AM CDT

* AT 610 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 30 MILES NORTHWEST OF MINOT OR 3 MILES SOUTH
  OF MOHALL... MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LANSFORD AT 620 AM CDT
  MAXBASS AT 630 AM CDT
  WESTHOPE AT 640 AM CDT

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS

VINING/ABELING

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

Special weather statement, Aug 18, 5:45 AM CDT, 28 minutes before

NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-182130-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BISMARCK ND
545 AM CDT TUE AUG 18 1998

...SEVERE THUNDERSTORMS ARE POSSIBLE OVER WESTERN AND CENTRAL NORTH
DAKOTA TONIGHT...

FORECAST...SCATTERED THUNDERSTORMS WILL MOVE OVER WESTERN AND CENTRAL
NORTH DAKOTA TODAY AND TONIGHT. A FEW MAY BECOME SEVERE OVER WESTERN
AND CENTRAL NORTH DAKOTA TONIGHT.

DISCUSSION...A WARM FRONT IN EASTERN MONTANA WILL MOVE EAST TODAY AND BE
THE FOCUS FOR THUNDERSTORMS ACROSS WEST AND CENTRAL NORTH DAKOTA TODAY.
ALTHOUGH A FEW OF THESE THUNDERSTORMS WILL APPROACH SEVERE LIMITS...THE
MAIN THREAT WILL BE TONIGHT AS A COLD FRONT ENTERS WESTERN NORTH DAKOTA.
STRONG WINDS ALOFT AND ABUNDANT MOISTURE WILL COMBINE TO TRIGGER
THUNDERSTORMS WITH THE COLD FRONTS PASSAGE. A FEW WILL BE SEVERE IN THE
WEST THIS EVENING AND IN THE CENTRAL TONIGHT.

WEATHER SPOTTERS MAY BE NEEDED TONIGHT OVER WESTERN AND CENTRAL
NORTH DAKOTA.

THIS PRODUCT IS FOR PLANNING PURPOSES ONLY. LOOK TO LATER FORECASTS
OR STATEMENTS FOR UPDATES.

ABELING

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 4:04 AM CDT	Severe Thunderstorm Warning	BIS	Williams	46 min
Aug 18, 4:15 PM CDT	Severe Thunderstorm Warning	BIS	Morton	45 min
Aug 18, 5:00 PM CDT	Severe Thunderstorm Warning	BIS	Morton	35 min
Aug 18, 5:23 PM CDT	Severe Thunderstorm Warning	BIS	Mountrail, Ward	47 min
Aug 18, 5:38 PM CDT	Tornado Warning	BIS	Mountrail	32 min
Aug 18, 5:49 PM CDT	Severe Thunderstorm Warning	BIS	Renville, Ward	41 min
Aug 18, 6:34 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau, Renville	61 min
Aug 18, 6:34 PM CDT	Severe Thunderstorm Warning	BIS	Ward	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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.