Alert archive / North Dakota / Tornado Warnings in 2018
Tornado Warning 6, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jun 8, 2018, 4:24 PM CDT for Grand Forks County, Nelson County, Walsh County, North Dakota. It was in force for 51 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 8, 2018, 4:24 PM CDT (21:24 UTC)
- Expired
- Jun 8, 2018, 5:15 PM CDT
- In force
- 51 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Observed
- Hail
- 1.0 in
Counties Grand Forks County, ND, Nelson County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 76 km from the middle of the area, began a volume at 21:23 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 |
|---|---|---|---|
| Jun 8, 4:54 PM CDT | TORNADO 1 | 3 Wnw Niagara, ND | A TORNADO LIKELY TRACKED INTERMITTENTLY FOR ABOUT 3 MILES TO ABOUT 1SW NIAGRA BY 506 PM CDT. A FEW SNAPPED OR UPROOTED POPLAR TREES WERE NOTED IN A SHELTER BELT NORTH OF U.S. HIGHWAY 2, WEST OF MP 239. LARGE BRANCHES WERE ALSO BROKEN DOWN IN VARIOUS SHELTER BE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 9.4 hours before the alert went out and 249 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
- 35 J/kg
- Mixed-layer CIN
- -155 J/kg
- Mixed-layer LCL
- 881 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
277 WFUS53 KFGF 082124 TORFGF NDC035-063-099-082215- /O.NEW.KFGF.TO.W.0006.180608T2124Z-180608T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED Tornado Warning National Weather Service Eastern ND/Grand Forks ND 424 PM CDT FRI JUN 8 2018 The National Weather Service in Grand Forks has issued a * Tornado Warning for... Northwestern Grand Forks County in northeastern North Dakota... Northeastern Nelson County in northeastern North Dakota... South central Walsh County in northeastern North Dakota... * Until 515 PM CDT. * At 424 PM CDT, a confirmed tornado was located near Petersburg, or 38 miles east of Devils Lake, moving east at 15 mph. HAZARD...Tornado and quarter size hail. SOURCE...Weather spotters confirmed tornado. IMPACT...Expect damage to mobile homes, roofs, and vehicles. * The tornado will be near... Petersburg around 430 PM CDT. Niagara around 445 PM CDT. Dahlen around 450 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... To report severe weather contact your nearest law enforcement agency. They will send your report to the National Weather Service office in Grand Forks. && LAT...LON 4794 9809 4811 9819 4825 9784 4799 9772 TIME...MOT...LOC 2124Z 248DEG 14KT 4806 9804 TORNADO...OBSERVED HAIL...1.00IN $$ JH
2 follow-up statements
816
WWUS53 KFGF 082148
SVSFGF
Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
448 PM CDT FRI JUN 8 2018
NDC035-063-099-082215-
/O.CON.KFGF.TO.W.0006.000000T0000Z-180608T2215Z/
Grand Forks ND-Nelson ND-Walsh ND-
448 PM CDT FRI JUN 8 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
NORTHWESTERN GRAND FORKS...NORTHEASTERN NELSON AND SOUTH CENTRAL
WALSH COUNTIES...
At 448 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Petersburg, or 36 miles southwest of Grafton, moving
east at 25 mph.
HAZARD...TORNADO and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Expect damage to mobile homes, roofs, and vehicles.
This dangerous storm will be near...
Dahlen and Niagara around 455 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.
&&
LAT...LON 4797 9802 4813 9811 4825 9784 4799 9772
TIME...MOT...LOC 2148Z 255DEG 22KT 4804 9797
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
GG007
WWUS53 KFGF 082217
SVSFGF
Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
517 PM CDT FRI JUN 8 2018
NDC035-063-099-082226-
/O.EXP.KFGF.TO.W.0006.000000T0000Z-180608T2215Z/
Grand Forks ND-Nelson ND-Walsh ND-
517 PM CDT FRI JUN 8 2018
...THE TORNADO WARNING FOR NORTHWESTERN GRAND FORKS...NORTHEASTERN
NELSON AND SOUTH CENTRAL WALSH COUNTIES HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been allowed to expire.
LAT...LON 4797 9802 4813 9811 4825 9784 4799 9772
TIME...MOT...LOC 2216Z 248DEG 14KT 4808 9783
$$
GGThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 3:09 PM CDT | Tornado Warning | FGF | Barnes, Cass | 36 min |
| Jun 8, 3:36 PM CDT | Tornado Warning | FGF | Barnes, Cass | 39 min |
| Jun 8, 4:14 PM CDT | Tornado Warning | FGF | Cass | 46 min |
| Jun 8, 4:21 PM CDT | Special Weather Statement | FGF | Nelson | 54 min |
| Jun 8, 4:23 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Traill | 52 min |
| Jun 8, 4:54 PM CDT | Tornado Warning | FGF | Cass, Richland | 51 min |
| Jun 8, 5:13 PM CDT | Tornado Warning | FGF | Grand Forks | 47 min |
| Jun 8, 5:37 PM CDT | Tornado Warning | FGF | Cass, Richland | 38 min |
| Jun 8, 6:14 PM CDT | Tornado Warning | FGF | Richland | 46 min |
Nearby
Tornado Warnings in North Dakota, 2018Every tornado warning in 2018Tornadoes in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.