Alert archive / North Dakota / Tornado Warnings in 1991
Tornado Warning 10, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jul 11, 1991, 7:15 PM CDT for Nelson County, North Dakota. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Jul 11, 1991, 7:15 PM CDT (00:15 UTC)
- Expired
- Jul 11, 1991, 8:15 PM CDT
- In force
- 60 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Nelson County, ND
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.3 hours before the alert went out and 228 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
- 14 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 2001 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KFAR 120015
TORFAR
NDC063-120115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FARGO ND
715 PM CDT THU JUL 11 1991
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE NORTHEAST PART OF NORTH DAKOTA
NELSON
AT 705 PM CDT A TORNADO WAS SIGHTED 7 MILES SOUTH OF PEKIN IN
NELSON COUNTY OF NORTHEAST NORTH DAKOTA. SOME TOWNS IN THE
WARNING AREA INCLUDE MCVILLE AND ANETA NORTH DAKOTA.
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE TO BE IS IN
A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...FIND SHELTER IN A CENTRAL INTERIOR
ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...
PILLOWS...OR CUSHIONS TO COVER YOUR BODY AND PROTECT YOUR HEAD.
AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED
BUILDING.
THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY.
ANDERSENThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 8:05 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 55 min |
| Jul 11, 9:06 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 24 min |
| Jul 11, 9:22 PM CDT | Tornado Warning | FGF | Richland | 38 min |
| Jul 11, 9:34 PM CDT | Tornado Warning | FGF | Cass | 56 min |
| Jul 11, 10:02 PM CDT | Tornado Warning | FGF | Richland | 43 min |
Nearby
Tornado Warnings in North Dakota, 1991Every tornado warning in 1991Tornadoes in 1991
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.