Alert archive / Minnesota / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 371

July 11, 201619 counties in Minnesota

The Storm Prediction Center issued this severe thunderstorm watch at Jul 11, 2016, 1:51 AM CDT for 19 counties in Minnesota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 11, 2016, 1:51 AM CDT (06:51 UTC)
Expired
Jul 11, 2016, 6:31 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
70 kt

Counties Aitkin County, MN, Beltrami County, MN, Benton County, MN, Cass County, MN, Clearwater County, MN, Crow Wing County, MN, Douglas County, MN, Hubbard County, MN, Itasca County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Pope County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Wadena County, MN

The radar

The Duluth radar (KDLH), 192 km from the middle of the area, began a volume at 06:51 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
10%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
10%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 11, 2:01 AM CDTSevere Thunderstorm WarningFGFBeltrami, Clearwater, Hubbard, Mahnomen, Polk59 min
Jul 11, 2:46 AM CDTSevere Thunderstorm WarningFGFHubbard, Otter Tail, Wadena29 min
Jul 11, 2:57 AM CDTSevere Thunderstorm WarningDLHAitkin, Cass, Crow Wing63 min
Jul 11, 2:59 AM CDTSevere Thunderstorm WarningFGFBeltrami, Hubbard61 min
Jul 11, 3:44 AM CDTSevere Thunderstorm WarningDLHCass, Itasca46 min
Jul 11, 3:58 AM CDTSevere Thunderstorm WarningDLHAitkin, Carlton, Crow Wing, Itasca, Pine, Saint Louis47 min
Jul 11, 4:24 AM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs, Morrison51 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 00:00Z, 6.9 hours before the alert went out and 200 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 00:00Z on 2016-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 408 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2016-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.1939Sfc1 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
408 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
908 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 10, 10:16 PM CDTMesoscale DiscussionSPCBecker, Big Stone, Clay, Clearwater, Grant, Mahnomen and 8 more89 min
Jul 10, 10:40 PM CDTSevere Thunderstorm WatchSPCBecker, Big Stone, Clay, Grant, Mahnomen, Marshall and 7 more6 hr
Jul 11, 1:01 AM CDTMesoscale DiscussionSPCAitkin, Becker, Beltrami, Benton, Big Stone, Cass and 27 more89 min
Jul 11, 3:22 AM CDTMesoscale DiscussionSPCAitkin, Benton, Carlton, Chisago, Crow Wing, Isanti and 5 more83 min
Jul 11, 4:06 AM CDTMesoscale DiscussionSPCBecker, Big Stone, Clay, Grant, Otter Tail, Traverse and 1 more84 min
Jul 11, 3:16 PM CDTMesoscale DiscussionSPCAnoka, Blue Earth, Brown, Carver, Cottonwood, Dakota and 28 more119 min
Jul 11, 3:48 PM CDTSevere Thunderstorm WatchSPCAnoka, Benton, Blue Earth, Brown, Carver, Chippewa and 36 more7 hr
Jul 11, 5:17 PM CDTMesoscale DiscussionSPCAnoka, Benton, Chisago, Hennepin, Isanti, Kandiyohi and 5 more58 min
Jul 11, 5:31 PM CDTTornado WatchSPCAnoka, Benton, Chisago, Isanti, Kanabec, Kandiyohi and 5 more4 hr
Jul 11, 6:03 PM CDTSevere Thunderstorm WatchSPCPine5 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 2016Every severe thunderstorm 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.