Alert archive / North Dakota / Tornado Watches in 1998
Tornado Watch 343
The Storm Prediction Center issued this tornado watch at May 14, 1998, 5:15 PM CDT for 7 counties in Minnesota; 23 counties in North Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 14, 1998, 5:15 PM CDT (22:15 UTC)
- Expired
- May 14, 1998, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 30 counties
Clay County, MN, Kittson County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Barnes County, ND, Benson County, ND, Burleigh County, ND, Cass County, ND, Cavalier County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Kidder County, ND, McHenry County, ND, Nelson County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Rolette County, ND, Sheridan County, ND, Steele County, ND, Stutsman County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Wells County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 117 km from the middle of the area, began a volume at 22:19 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.
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 5:27 PM CDT | Tornado Warning | BIS | Sheridan | 43 min |
| May 14, 6:53 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 47 min |
| May 14, 7:07 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 33 min |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 10.3 hours before the alert went out and 199 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
- 635 J/kg
- Mixed-layer CIN
- -252 J/kg
- Mixed-layer LCL
- 945 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- -51 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 7:00 AM CDT | Severe Thunderstorm Watch | SPC | Beltrami, Cass, Cook, Hubbard, Itasca, Koochiching and 3 more | 6 hr |
| May 13, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Benson, Bottineau, Cavalier, Eddy, Grand Forks, McHenry and 12 more | 5 hr |
Nearby
Tornado Watches in North Dakota, 1998Tornado Watches in Minnesota, 1998Every tornado watch 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.