Alert archive / North Dakota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 82, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 20, 1998, 8:17 AM CDT for Rolette County, North Dakota. It was in force for 33 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
- Jul 20, 1998, 8:17 AM CDT (13:17 UTC)
- Expired
- Jul 20, 1998, 8:50 AM CDT
- In force
- 33 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Rolette County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 20, 8:20 AM CDT | Hail 2.5 | St John, ND | At least 2 vehicle were damaged. Numerous trees lost their leaves. Crops also damaged. |
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
Bismarck Municip, ND (KBIS), launched 12:00Z, 1.3 hours before the alert went out and 232 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.
- Mixed-layer CAPE
- 1346 J/kg
- Mixed-layer CIN
- -322 J/kg
- Mixed-layer LCL
- 1793 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
744 WUUS1 KBIS 201318 RRA SVRBIS NDC079-201350- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BISMARCK ND 817 AM CDT MON JUL 20 1998 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ROLETTE COUNTY IN NORTH CENTRAL NORTH DAKOTA * UNTIL 850 AM CDT * AT 812 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES NORTHEAST OF BOTTINEAU... MOVING EAST AT 45 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ST. JOHN AT 825 AM CDT DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS LEBLANG
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, Jul 20, 4:35 AM CDT, 3 hours 42 minutes before
NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-202130- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE BISMARCK ND 435 AM CDT MON JUL 20 1998 ...NO SEVERE THUNDERSTORMS OVER WEST AND CENTRAL NO
Special weather statement, Jul 20, 4:35 AM CDT, 3 hours 42 minutes before
NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-202130- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE BISMARCK ND 435 AM CDT MON JUL 20 1998 ...NO SEVERE THUNDERSTORMS OVER WEST AND CENTRAL NO
Nearby
Severe Thunderstorm Warnings in North Dakota, 1998Every 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.