Alert archive / Minnesota / Tornado Watches in 2010

Tornado Watch 335

June 17, 20108 counties in Minnesota

The Storm Prediction Center issued this tornado watch at Jun 17, 2010, 2:30 PM CDT for 8 counties in Minnesota. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Jun 17, 2010, 2:30 PM CDT (19:30 UTC)
Expired
Jun 17, 2010, 11:00 PM CDT
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
70 kt

Counties Aitkin County, MN, Carlton County, MN, Cass County, MN, Crow Wing County, MN, Itasca County, MN, Koochiching County, MN, Pine County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 139 km from the middle of the area, began a volume at 19:32 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
70%
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
40%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 17, 2:53 PM CDTSevere Thunderstorm WarningDLHItasca37 min
Jun 17, 3:02 PM CDTSevere Thunderstorm WarningDLHItasca, Koochiching33 min
Jun 17, 3:19 PM CDTSevere Thunderstorm WarningDLHItasca, Koochiching, Saint Louis41 min
Jun 17, 4:33 PM CDTSevere Thunderstorm WarningDLHItasca, Saint Louis42 min
Jun 17, 5:32 PM CDTTornado WarningDLHCass, Crow Wing28 min
Jun 17, 5:40 PM CDTSevere Thunderstorm WarningDLHCrow Wing45 min
Jun 17, 5:57 PM CDTTornado WarningDLHCass, Crow Wing33 min
Jun 17, 6:28 PM CDTTornado WarningDLHCass, Crow Wing32 min
Jun 17, 6:55 PM CDTTornado WarningDLHCass, Crow Wing35 min
Jun 17, 6:57 PM CDTTornado WarningDLHAitkin, Cass, Crow Wing18 min
Jun 17, 7:17 PM CDTTornado WarningDLHAitkin, Cass, Crow Wing, Itasca43 min
Jun 17, 7:28 PM CDTTornado WarningDLHCrow Wing20 min
Jun 17, 7:39 PM CDTSevere Thunderstorm WarningDLHCass, Crow Wing, Itasca36 min
Jun 17, 7:58 PM CDTSevere Thunderstorm WarningDLHAitkin, Itasca, Saint Louis62 min
Jun 17, 8:23 PM CDTSevere Thunderstorm WarningDLHPine37 min
Jun 17, 8:37 PM CDTTornado WarningDLHPine23 min
Jun 17, 8:58 PM CDTTornado WarningDLHPine32 min
Jun 17, 9:30 PM CDTTornado Warning EmergencyDLHPine30 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, 7.5 hours before the alert went out and 114 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.

Skew-T log-pSkew-T log-p diagram, International Fa, MN at 12:00Z on 2010-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 12:00Z on 2010-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
782 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 17, 7:53 AM CDTMesoscale DiscussionSPCBecker, Clay, Grant, Mahnomen, Norman, Otter Tail and 3 more97 min
Jun 17, 12:03 PM CDTMesoscale DiscussionSPCBig Stone, Brown, Chippewa, Cottonwood, Jackson, Kandiyohi and 14 more87 min
Jun 17, 12:04 PM CDTMesoscale DiscussionSPCClay, Kittson, Marshall, Norman, Pennington, Polk and 1 more56 min
Jun 17, 12:21 PM CDTTornado WatchSPCBecker, Beltrami, Clay, Clearwater, Grant, Hubbard and 12 more9 hr
Jun 17, 1:09 PM CDTMesoscale DiscussionSPCAitkin, Cass, Crow Wing, Itasca, Koochiching, Saint Louis96 min
Jun 17, 1:54 PM CDTTornado WatchSPCAnoka, Benton, Big Stone, Blue Earth, Brown, Carver and 46 more8 hr
Jun 17, 2:18 PM CDTMesoscale DiscussionSPCBecker, Clay, Mahnomen, Norman, Otter Tail, Polk and 2 more57 min
Jun 17, 3:31 PM CDTMesoscale DiscussionSPCAitkin, Benton, Blue Earth, Brown, Carver, Cass and 37 more59 min
Jun 17, 4:46 PM CDTMesoscale DiscussionSPCFillmore, Houston, Mower, Olmsted, Wabasha, Winona59 min
Jun 17, 5:50 PM CDTTornado WatchSPCDodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more7 hr
Jun 17, 6:41 PM CDTMesoscale DiscussionSPCClearwater, Kittson, Mahnomen, Marshall, Pennington, Polk and 1 more64 min

Nearby

Tornado Watches in Minnesota, 2010Every tornado watch in 2010

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.