Alert archive / Minnesota / Tornado Watches in 2007
Tornado Watch 410
The Storm Prediction Center issued this tornado watch at Jun 17, 2007, 4:18 PM CDT for 14 counties in Minnesota; 7 counties in North Dakota. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2007, 4:18 PM CDT (21:18 UTC)
- Expired
- Jun 18, 2007, 12:00 AM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 21 counties
Beltrami County, MN, Clearwater County, MN, Itasca County, MN, Kittson County, MN, Koochiching County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Saint Louis County, MN, Grand Forks County, ND, Griggs County, ND, Nelson County, ND, Pembina County, ND, Steele County, ND, Traill County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 135 km from the middle of the area, began a volume at 21:19 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
- 70%
- One or more EF2 to EF5 tornadoes
- 40%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 9:25 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Griggs | 46 min |
| Jun 17, 9:31 PM CDT | Severe Thunderstorm Warning | FGF | Nelson, Walsh | 59 min |
| Jun 17, 9:35 PM CDT | Tornado Warning | FGF | Nelson, Walsh | 43 min |
| Jun 17, 10:13 PM CDT | Severe Thunderstorm Warning | FGF | Steele | 40 min |
| Jun 17, 10:14 PM CDT | Flash Flood Warning | FGF | Barnes, Griggs, Steele | 9 hr |
| Jun 17, 11:52 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Mahnomen, Norman, Otter Tail | 53 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
International Fa, MN (KINL), launched 12:00Z, 9.3 hours before the alert went out and 188 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1572 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 172119
SEL0
SPC WW 172119
MNZ000-NDZ000-180500-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 410
NWS STORM PREDICTION CENTER NORMAN OK
420 PM CDT SUN JUN 17 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN MINNESOTA
NORTHEASTERN NORTH DAKOTA
EFFECTIVE THIS SUNDAY AFTERNOON FROM 420 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 60 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST OF GRAND FORKS
NORTH DAKOTA TO 55 MILES NORTHEAST OF HIBBING MINNESOTA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).
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...
DISCUSSION...RAPID TSTM DEVELOPMENT HAS RECENTLY OCCURRED ALONG WARM
FRONT INVOF GFK. AMBIENT ENVIRONMENT IS MODERATELY UNSTABLE AND
STRONGLY SHEARED...SUPPORTING SUPERCELLS CAPABLE OF TORNADOES AND
LARGE HAIL.
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 26030.
...MEAD/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, 5:13 PM CDT | Tornado Watch | SPC | Clay, Wilkin | 7 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 Minnesota, 2007Tornado Watches in North Dakota, 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.