Alert archive / North Dakota / Tornado Warnings in 1999
Tornado Warning 21, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jul 12, 1999, 9:21 PM CDT for Ramsey County, Walsh County, North Dakota. It was in force for 34 min. 3 reports 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 12, 1999, 9:21 PM CDT (02:21 UTC)
- Expired
- Jul 12, 1999, 9:55 PM CDT
- In force
- 34 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Ramsey County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 110 km from the middle of the area, began a volume at 02:24 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 12, 9:25 PM CDT | Hail 1.25 | Edmore, ND | |
| Jul 12, 9:25 PM CDT | Hail 1.75 | Fairdale, ND | 40 quarters of cropland were damaged by the hail. |
| Jul 12, 10:05 PM CDT | Hail 1.25 | Lankin, 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 |
|---|---|---|---|
| Jul 12, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 2.4 hours before the alert went out and 254 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
- 1355 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 2177 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 130221 RRA TORFAR NDC071-099-130255- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 921 PM CDT MON JUL 12 1999 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN RAMSEY COUNTY IN NORTHEASTERN NORTH DAKOTA WESTERN WALSH COUNTY IN NORTHEASTERN NORTH DAKOTA * UNTIL 955 PM CDT * AT 919 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 19 MILES SOUTH OF LANGDON OR 10 MILES WEST OF ADAMS... MOVING SOUTHEAST AT 30 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... FAIRDALE AT 928 PM CDT EDMORE AT 930 PM CDT ADAMS AT 938 PM CDT IF YOU ARE IN THE PATH OF A TORNADO THE SAFEST PLACE IS A BASEMENT. GET UNDER A STAIRWAY OR A PIECE OF STURDY FURNITURE. JRB
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 8:02 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 48 min |
| Jul 12, 8:48 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 32 min |
| Jul 12, 9:18 PM CDT | Tornado Warning | FGF | Traill | 32 min |
| Jul 12, 9:56 PM CDT | Tornado Warning | FGF | Ramsey, Walsh | 34 min |
| Jul 12, 10:23 PM CDT | Severe Thunderstorm Warning | FGF | Nelson | 32 min |
| Jul 12, 10:52 PM CDT | Severe Thunderstorm Warning | FGF | Nelson | 33 min |
| Jul 12, 11:24 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 36 min |
Nearby
Tornado Warnings in North Dakota, 1999Every tornado warning in 1999Tornadoes in 1999
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; radar from the NEXRAD Level II archive.