Alert archive / North Dakota / Tornado Watches in 2016
Tornado Watch 430
The Storm Prediction Center issued this tornado watch at Aug 3, 2016, 3:38 PM CDT for 9 counties in Minnesota; 40 counties in North Dakota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 3, 2016, 3:38 PM CDT (20:38 UTC)
- Expired
- Aug 3, 2016, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 49 counties
Clay County, MN, Kittson County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Wilkin County, MN, Barnes County, ND, Benson County, ND, Bottineau County, ND, Burleigh County, ND, Cass County, ND, Cavalier County, ND, Dickey County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Grand Forks County, ND, Grant County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Nelson County, ND, Oliver County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Ransom County, ND, Renville County, ND, Richland County, ND, Rolette County, ND, Sargent County, ND, Sheridan County, ND, Sioux County, ND, Steele County, ND, Stutsman County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Ward County, ND, Wells County, ND
The radar
The Minot AFB radar (KMBX), 134 km from the middle of the area, began a volume at 20:39 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 90%
- One or more hailstones of 2 inches or more
- 50%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
27 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 3:54 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Rolette | 66 min |
| Aug 3, 3:58 PM CDT | Severe Thunderstorm Warning | BIS | Pierce, Rolette | 62 min |
| Aug 3, 4:23 PM CDT | Severe Thunderstorm Warning | BIS | Rolette | 67 min |
| Aug 3, 4:30 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Towner | 60 min |
| Aug 3, 5:00 PM CDT | Severe Thunderstorm Warning | BIS | Pierce, Rolette | 60 min |
| Aug 3, 5:17 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 58 min |
| Aug 3, 5:31 PM CDT | Tornado Warning | BIS | Rolette | 19 min |
| Aug 3, 5:31 PM CDT | Tornado Warning | FGF | Towner | 44 min |
| Aug 3, 5:58 PM CDT | Severe Thunderstorm Warning | BIS | Pierce, Rolette | 45 min |
| Aug 3, 6:14 PM CDT | Tornado Warning | FGF | Cavalier, Towner | 46 min |
| Aug 3, 6:43 PM CDT | Tornado Warning | FGF | Cavalier, Towner | 47 min |
| Aug 3, 6:48 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Cavalier, Ramsey, Towner | 42 min |
| Aug 3, 7:04 PM CDT | Flash Flood Warning | FGF | Towner | 3 hr |
| Aug 3, 7:15 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina, Ramsey, Walsh | 60 min |
| Aug 3, 7:29 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Cavalier, Ramsey, Towner, Walsh | 46 min |
| Aug 3, 7:38 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey | 52 min |
| Aug 3, 7:55 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Roseau | 65 min |
| Aug 3, 8:14 PM CDT | Severe Thunderstorm Warning | FGF | Ramsey | 61 min |
| Aug 3, 8:19 PM CDT | Tornado Warning | FGF | Ramsey | 41 min |
| Aug 3, 8:24 PM CDT | Tornado Warning | FGF | Benson, Eddy | 51 min |
| Aug 3, 9:13 PM CDT | Tornado Warning | FGF | Eddy, Nelson | 47 min |
| Aug 3, 9:48 PM CDT | Severe Thunderstorm Warning | BIS | McIntosh | 57 min |
| Aug 3, 9:54 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Griggs, Nelson, Steele | 20 min |
| Aug 3, 9:58 PM CDT | Severe Thunderstorm Warning | BIS | LaMoure, Logan | 62 min |
| Aug 3, 10:05 PM CDT | Tornado Warning | BIS | McIntosh | 25 min |
| Aug 3, 10:12 PM CDT | Severe Thunderstorm Warning | FGF | Griggs, Steele | 48 min |
| Aug 3, 10:29 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Marshall, Pennington, Polk, Red Lake | 61 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 8.6 hours before the alert went out and 151 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
- 58 J/kg
- Mixed-layer CIN
- -522 J/kg
- Mixed-layer LCL
- 1927 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
867
WWUS20 KWNS 032034
SEL0
SPC WW 032034
MNZ000-NDZ000-040400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 430
NWS STORM PREDICTION CENTER NORMAN OK
335 PM CDT WED AUG 3 2016
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
NORTHWEST MINNESOTA
CENTRAL AND EASTERN NORTH DAKOTA
* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 335 PM
UNTIL 1100 PM CDT.
* PRIMARY THREATS INCLUDE...
A FEW TORNADOES POSSIBLE
WIDESPREAD LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL
EVENTS TO 3 INCHES IN DIAMETER POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
SUMMARY...THUNDERSTORMS ARE EXPECTED TO FORM RAPIDLY THIS AFTERNOON
OVER CENTRAL ND AND TRACK EASTWARD ACROSS THE WATCH AREA. VERY
LARGE HAIL WILL BE POSSIBLE IN THE STRONGEST STORMS...ALONG WITH A
FEW TORNADOES AND DAMAGING WINDS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 135 STATUTE
MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH NORTHEAST OF
DEVILS LAKE NORTH DAKOTA TO 75 MILES SOUTH SOUTHWEST OF JAMESTOWN
NORTH DAKOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
&&
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 27030.
...HARTSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 2:52 PM CDT | Mesoscale Discussion | SPC | Benson, Bottineau, Burleigh, Cavalier, Eddy, Emmons and 22 more | 53 min |
| Aug 3, 6:29 PM CDT | Mesoscale Discussion | SPC | Barnes, Benson, Burleigh, Cass, Cavalier, Dickey and 23 more | 91 min |
Nearby
Tornado Watches in North Dakota, 2016Tornado Watches in Minnesota, 2016Every tornado watch in 2016
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.