Alert archive / North Dakota / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 110, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 26, 1999, 1:33 AM CDT for Traill County, North Dakota. It was in force for 32 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
- Jun 26, 1999, 1:33 AM CDT (06:33 UTC)
- Expired
- Jun 26, 1999, 2:05 AM CDT
- In force
- 32 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Traill County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 15 km from the middle of the area, began a volume at 06:32 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 25, 11:30 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 6.6 hours before the alert went out and 278 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
- 4959 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 1683 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 25.7
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 25, 9:40 PM CDT, 3 hours 53 minutes earlier.
Area forecast discussion, Jun 25, 9:40 PM CDT, 3 hours 53 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 940 PM CDT FRI JUN 25 1999 FORECAST CONCERN IS SVR WX AND FLOODING. LITTLE TIME FOR DISCUSSION AS WEATHER QUITE ACTIVE THIS EVENING. HAVE ALREADY UPDATED ZONES FOR LATEST TOR WATCH AND WILL BE ISSUING A FLASH FLOOD WATCH FOR MUCH OF CWFA FOR MOST OF THE OVERNIGHT HOURS...AS FFG IS QUITE LOW AND STORMS ARE PRODUCING RAINFALL AMOUNTS OF 1-2 INCHES PER HOUR. .FGF...TORNADO WATCH 472 TIL 1 AM CDT AND FLASH FLOOD WATCH TIL 6AM CDT FOR MOST OF EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA. NG
In the hours before
Local storm report, Jun 25, 9:30 PM CDT, 4 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
930 PM CDT FRI JUN 25 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0511 PM HALMA 5W MN 1 INCH HAIL
06/25/99 KITTSON
0515 PM HALMA 5W MN 1 INCH HAIL
06/25/99 KITTSON
0530 PM ROSEAU MN .75 INCH HAIL
06/25/99 ROSEAU
0545 PM FOX MN .75 INCH HAIL
06/25/99 ROSEAU
0555 PM LAKE BRONSON 5W MN 1 INCH HAIL
06/25/99 KITTSON
0617 PM BADGER MN 1 INCH HAIL
06/25/99 ROSEAU
0639 PM WANNASKA 2N MN .88 INCH HAIL
06/25/99 ROSEAU
0645 PM WARROAD 6S1E MN .88 INCH HAIL
06/25/99 ROSEAU
0700 PM WILLIAMS MN .75 INCH HAIL
06/25/99 LAKE OF THE WOODS
0705 PM ROSEAU MN FLOODING
06/25/99 ROSEAU POLARIS FACTORY EVACUATED
DUE TO FLOODING
0812 PM PENN ND .88 INCH HAIL
06/25/99 RAMSEY
0812 PM PENN ND .75 INCH HAIL
06/25/99 RAMSEY
0825 PM MADDOCK ND .75 INCH HAIL
06/25/99 BENSON
0845 PM DEVILS LAKE 10NE ND 1.75 INCH HAIL
06/25/99 RAMSEY
0847 PM WEBSTER 3SE ND 1.75 INCH HAIL
06/25/99 RAMSEYThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 7:54 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey | 36 min |
| Jun 25, 8:23 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey | 47 min |
| Jun 25, 9:05 PM CDT | Flash Flood Warning | FGF | Benson, Ramsey | 3 hr |
| Jun 25, 9:10 PM CDT | Severe Thunderstorm Warning | FGF | Ramsey, Walsh | 35 min |
| Jun 25, 11:17 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Griggs | 33 min |
| Jun 25, 11:37 PM CDT | Severe Thunderstorm Warning | FGF | Steele, Traill | 33 min |
| Jun 26, 12:01 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Steele | 49 min |
| Jun 26, 12:01 AM CDT | Severe Thunderstorm Warning | FGF | Traill | 49 min |
| Jun 26, 1:15 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 30 min |
| Jun 25, 7:23 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 62 min |
| Jun 25, 7:31 PM CDT | Flash Flood Warning | FGF | Lake of the Woods | 3 hr |
| Jun 26, 12:17 AM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 58 min |
| Jun 26, 12:17 AM CDT | Severe Thunderstorm Warning | FGF | Marshall, Pennington | 58 min |
| Jun 26, 12:17 AM CDT | Severe Thunderstorm Warning | FGF | Red Lake | 58 min |
| Jun 26, 1:05 AM CDT | Severe Thunderstorm Warning | FGF | Polk | 30 min |
| Jun 26, 1:14 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay | 46 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1999Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.