Alert archive / North Dakota / Tornado Watches in 2007
Tornado Watch 412
The Storm Prediction Center issued this tornado watch at Jun 17, 2007, 5:13 PM CDT for Clay County, Wilkin County, Minnesota; 18 counties in North Dakota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2007, 5:13 PM CDT (22:13 UTC)
- Expired
- Jun 18, 2007, 12:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Clay County, MN, Wilkin County, MN, Barnes County, ND, Burleigh County, ND, Cass County, ND, Dickey County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Sheridan County, ND, Sioux County, ND, Stutsman County, ND, Wells County, ND
The radar
The Bismarck radar (KBIS), 114 km from the middle of the area, began a volume at 22:16 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 8:18 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 57 min |
| Jun 17, 8:26 PM CDT | Severe Thunderstorm Warning | BIS | Emmons, Logan, McIntosh | 64 min |
| Jun 17, 8:35 PM CDT | Tornado Warning | BIS | Burleigh, Morton | 25 min |
| Jun 17, 8:51 PM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 24 min |
| Jun 17, 9:03 PM CDT | Tornado Warning | BIS | Burleigh | 27 min |
| Jun 17, 9:24 PM CDT | Severe Thunderstorm Warning | BIS | Pierce, Sheridan, Wells | 40 min |
| Jun 17, 9:25 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Griggs | 46 min |
| Jun 17, 9:28 PM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure, Logan, McIntosh, Stutsman | 62 min |
| Jun 17, 9:34 PM CDT | Severe Thunderstorm Warning | BIS | Kidder, Wells | 46 min |
| Jun 17, 10:14 PM CDT | Flash Flood Warning | FGF | Barnes, Griggs, Steele | 9 hr |
| Jun 17, 11:28 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Wilkin | 62 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, 10.2 hours before the alert went out and 109 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
- 575 J/kg
- Mixed-layer CIN
- -365 J/kg
- Mixed-layer LCL
- 670 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 485 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 172211
SEL2
SPC WW 172211
MNZ000-NDZ000-180500-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 412
NWS STORM PREDICTION CENTER NORMAN OK
510 PM CDT SUN JUN 17 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
FAR WEST CENTRAL MINNESOTA
CENTRAL AND SOUTHEASTERN NORTH DAKOTA
EFFECTIVE THIS SUNDAY AFTERNOON FROM 510 PM UNTIL MIDNIGHT CDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 105 STATUTE
MILES EAST AND WEST OF A LINE FROM 75 MILES SOUTH SOUTHWEST OF
JAMESTOWN NORTH DAKOTA TO 60 MILES NORTH NORTHEAST OF JAMESTOWN
NORTH DAKOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).
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.
OTHER WATCH INFORMATION...CONTINUE...WW 407...WW 408...WW
409...WW 410...WW 411...
DISCUSSION...SEVERE THUNDERSTORMS...INCLUDING A FEW SUPERCELLS...ARE
EXPECTED TO DEVELOP AHEAD OF STRONG SURFACE COLD FRONT AND LOW
CENTER NOW MOVING INTO CENTRAL ND. AIR MASS IS MODERATE TO STRONGLY
UNSTABLE EARLY THIS EVENING WITH WEAKENING CAP. DEEP LAYER SHEAR
REMAINS QUITE STRONG WITH EFFECTIVE SHEAR IN EXCESS OF 50 KT. IN
ADDITION...LOW LEVEL SHEAR SHOULD FAVOR LOW LEVEL ROTATION AND THE
POTENTIAL FOR TORNADOES...AS WELL AS LARGE HAIL AND DAMAGING WINDS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.
...EVANSSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 2:49 AM CDT | Mesoscale Discussion | SPC | Becker, Clay, Clearwater, Mahnomen, Norman, Otter Tail and 4 more | 86 min |
| Jun 17, 3:09 AM CDT | Tornado Watch | SPC | Becker, Clay, Otter Tail, Wilkin | 6 hr |
| Jun 17, 6:51 AM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Cass, Clay, Clearwater, Hubbard and 7 more | 84 min |
| Jun 17, 4:08 PM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Cass, Clearwater, Hubbard, Kittson and 6 more | 67 min |
| Jun 17, 4:18 PM CDT | Tornado Watch | SPC | Beltrami, Clearwater, Itasca, Kittson, Koochiching, Lake of the Woods and 8 more | 8 hr |
| Jun 16, 9:06 PM CDT | Mesoscale Discussion | SPC | Adams, Billings, Bowman, Dunn, Golden Valley, Hettinger and 3 more | 54 min |
| Jun 16, 11:06 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Barnes, Benson, Billings, Bowman, Burleigh and 33 more | 7 hr |
| Jun 17, 5:02 AM CDT | Mesoscale Discussion | SPC | Billings, Golden Valley, McKenzie, Williams | 58 min |
| Jun 17, 5:40 AM CDT | Severe Thunderstorm Watch | SPC | Billings, Bottineau, Bowman, Burleigh, Dunn, Golden Valley and 14 more | 3 hr |
| Jun 17, 4:44 PM CDT | Mesoscale Discussion | SPC | Burleigh, Dickey, Emmons, Foster, Kidder, LaMoure and 8 more | 91 min |
Nearby
Tornado Watches in North Dakota, 2007Tornado Watches in Minnesota, 2007Every tornado watch in 2007
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.