Alert archive / North Dakota / Tornado Warnings in 2015
Tornado Warning 13, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jun 21, 2015, 7:36 PM CDT for Benson County, Towner County, North Dakota. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 21, 2015, 7:36 PM CDT (00:36 UTC)
- Expired
- Jun 21, 2015, 8:02 PM CDT
- In force
- 26 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Benson County, ND, Towner County, ND
The radar
The Minot AFB radar (KMBX), 97 km from the middle of the area, began a volume at 00:38 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 21, 3:23 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.6 hours before the alert went out and 197 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
- 495 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1751 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 5.2
The text
As transmitted, in the capitals the NWS used until 2016.
610
WFUS53 KFGF 220036
TORFGF
NDC005-095-220115-
/O.NEW.KFGF.TO.W.0013.150622T0036Z-150622T0115Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
736 PM CDT SUN JUN 21 2015
THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN BENSON COUNTY IN NORTHEASTERN NORTH DAKOTA...
SOUTHWESTERN TOWNER COUNTY IN NORTHEASTERN NORTH DAKOTA...
* UNTIL 815 PM CDT
* AT 735 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED OVER PLEASANT LAKE...OR 9 MILES EAST OF
RUGBY...MOVING EAST AT 40 MPH.
HAZARD...TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...EXPECT DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES.
* THIS DANGEROUS STORM WILL BE NEAR...
KNOX AROUND 740 PM CDT.
YORK AROUND 750 PM CDT.
LEEDS AROUND 800 PM CDT.
CHURCHS FERRY AROUND 815 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 4837 9985 4837 9950 4838 9949 4843 9949
4843 9920 4825 9920 4828 9985
TIME...MOT...LOC 0035Z 273DEG 32KT 4835 9978
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
HOPKINS2 follow-up statements
756
WWUS53 KFGF 220054
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
754 PM CDT SUN JUN 21 2015
NDC095-220103-
/O.CAN.KFGF.TO.W.0013.000000T0000Z-150622T0115Z/
TOWNER ND-
754 PM CDT SUN JUN 21 2015
...THE TORNADO WARNING FOR SOUTHWESTERN TOWNER COUNTY IS CANCELLED...
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT
OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR NORTHEASTERN
NORTH DAKOTA.
LAT...LON 4837 9965 4836 9920 4825 9920 4827 9965
TIME...MOT...LOC 0053Z 270DEG 20KT 4831 9960
$$
NDC005-220115-
/O.CON.KFGF.TO.W.0013.000000T0000Z-150622T0115Z/
BENSON ND-
754 PM CDT SUN JUN 21 2015
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
NORTHWESTERN BENSON COUNTY...
AT 753 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER YORK...OR 18 MILES EAST OF RUGBY...MOVING EAST AT 25
MPH.
HAZARD...TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...EXPECT DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES.
THIS DANGEROUS STORM WILL BE NEAR...
YORK AROUND 755 PM CDT.
LEEDS AROUND 810 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 4837 9965 4836 9920 4825 9920 4827 9965
TIME...MOT...LOC 0053Z 270DEG 20KT 4831 9960
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
HOPKINS740
WWUS53 KFGF 220102
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
802 PM CDT SUN JUN 21 2015
NDC005-220111-
/O.CAN.KFGF.TO.W.0013.000000T0000Z-150622T0115Z/
BENSON ND-
802 PM CDT SUN JUN 21 2015
...THE TORNADO WARNING FOR NORTHWESTERN BENSON COUNTY IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING HAS BEEN CANCELLED. HOWEVER GUSTY WINDS ARE
STILL POSSIBLE WITH THIS THUNDERSTORM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR NORTHEASTERN
NORTH DAKOTA.
REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
BENSON COUNTY UNTIL 815 PM CDT.
LAT...LON 4837 9965 4836 9920 4825 9920 4827 9965
TIME...MOT...LOC 0100Z 273DEG 32KT 4831 9949
$$
HOPKINSThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 7:20 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey, Towner | 55 min |
| Jun 21, 10:29 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Griggs, Steele | 61 min |
| Jun 21, 11:20 PM CDT | Special Weather Statement | FGF | Steele | 55 min |
| Jun 21, 11:26 PM CDT | Special Weather Statement | FGF | Steele, Traill | 64 min |
| Jun 22, 12:38 AM CDT | Special Weather Statement | FGF | Cass | 37 min |
Nearby
Tornado Warnings in North Dakota, 2015Every tornado warning in 2015Tornadoes in 2015
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.