Alert archive / Minnesota / Tornado Watches in 2019

Tornado Watch 519

July 17, 20195 counties in Minnesota

The Storm Prediction Center issued this tornado watch at Jul 17, 2019, 5:06 PM CDT for 5 counties in Minnesota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 17, 2019, 5:06 PM CDT (22:06 UTC)
Expired
Jul 17, 2019, 9:56 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt

Counties Beltrami County, MN, Itasca County, MN, Koochiching County, MN, Lake of the Woods County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 224 km from the middle of the area, began a volume at 22:08 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
30%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
60%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 17, 5:06 PM CDTSevere Thunderstorm WarningFGFLake of the Woods24 min
Jul 17, 5:26 PM CDTSevere Thunderstorm WarningDLHItasca, Koochiching34 min
Jul 17, 5:27 PM CDTSevere Thunderstorm WarningDLHKoochiching63 min
Jul 17, 5:46 PM CDTTornado WarningDLHItasca, Koochiching29 min
Jul 17, 6:07 PM CDTSevere Thunderstorm WarningDLHKoochiching38 min
Jul 17, 6:11 PM CDTSevere Thunderstorm WarningFGFLake of the Woods34 min
Jul 17, 6:12 PM CDTTornado WarningDLHItasca, Koochiching33 min
Jul 17, 6:24 PM CDTSevere Thunderstorm WarningDLHKoochiching66 min
Jul 17, 6:28 PM CDTTornado WarningDLHKoochiching47 min
Jul 17, 6:37 PM CDTTornado WarningDLHItasca, Koochiching38 min
Jul 17, 7:07 PM CDTTornado WarningDLHKoochiching23 min
Jul 17, 7:15 PM CDTSevere Thunderstorm WarningDLHItasca, Koochiching, Saint Louis30 min
Jul 17, 7:30 PM CDTTornado WarningDLHKoochiching, Saint Louis45 min
Jul 17, 7:45 PM CDTSevere Thunderstorm WarningDLHSaint Louis30 min
Jul 17, 8:07 PM CDTTornado Warning Tornado observedDLHSaint Louis23 min
Jul 17, 8:10 PM CDTSevere Thunderstorm WarningDLHKoochiching, Saint Louis50 min
Jul 17, 8:18 PM CDTSevere Thunderstorm WarningDLHKoochiching, Saint Louis27 min
Jul 17, 8:29 PM CDTTornado WarningDLHSaint Louis46 min
Jul 17, 9:01 PM CDTSevere Thunderstorm WarningDLHSaint Louis44 min
Jul 17, 9:13 PM CDTSevere Thunderstorm WarningDLHLake, Saint Louis47 min
Jul 17, 9:56 PM CDTSevere Thunderstorm WarningDLHLake, Saint Louis64 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, 10.1 hours before the alert went out and 69 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 2019-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 12:00Z on 2019-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
1444 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
85 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
Jul 17, 4:14 AM CDTMesoscale DiscussionSPCRock91 min
Jul 17, 9:09 AM CDTMesoscale DiscussionSPCJackson, Martin, Nobles, Rock96 min
Jul 17, 3:29 PM CDTMesoscale DiscussionSPCBecker, Beltrami, Big Stone, Cass, Clay, Clearwater and 24 more2 hr
Jul 17, 6:24 PM CDTMesoscale DiscussionSPCItasca, Koochiching, Saint Louis96 min

Nearby

Tornado Watches in Minnesota, 2019Every tornado watch in 2019

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.