Alert archive / North Dakota / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 272

June 18, 201625 counties in North Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 18, 2016, 10:20 PM CDT for 25 counties in North Dakota. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Jun 18, 2016, 10:20 PM CDT (03:20 UTC)
Expired
Jun 19, 2016, 6:00 AM CDT
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
65 kt
All 25 counties

Benson County, ND, Bottineau County, ND, Burke County, ND, Cavalier County, ND, Divide County, ND, Dunn County, ND, Eddy County, ND, Grand Forks County, ND, McHenry County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Mountrail County, ND, Nelson County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Towner County, ND, Walsh County, ND, Ward County, ND, Wells County, ND, Williams County, ND

The radar

The Minot AFB radar (KMBX), 32 km from the middle of the area, began a volume at 03:20 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
20%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
40%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 18, 11:28 PM CDTSevere Thunderstorm WarningBISDivide, McKenzie, Williams62 min
Jun 19, 12:29 AM CDTSevere Thunderstorm WarningBISMcKenzie, Mountrail, Williams61 min
Jun 19, 2:11 AM CDTSevere Thunderstorm WarningBISMcHenry, Renville, Ward64 min
Jun 19, 2:47 AM CDTSevere Thunderstorm WarningBISMcHenry, Pierce58 min
Jun 19, 3:23 AM CDTSevere Thunderstorm WarningFGFBenson, Cavalier, Ramsey, Towner67 min
Jun 19, 4:22 AM CDTSevere Thunderstorm WarningFGFCavalier, Pembina, Ramsey, Towner, Walsh38 min
Jun 19, 4:58 AM CDTSevere Thunderstorm WarningFGFCavalier, Pembina, Ramsey, Walsh62 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 00:00Z, 3.3 hours before the alert went out and 190 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, Bismarck Municip, ND at 00:00Z on 2016-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1492 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, Bismarck Municip, ND at 00:00Z on 2016-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.1939587897Sfc1 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
1492 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1273 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 9:58 PM CDTMesoscale DiscussionSPCBenson, Bottineau, Burke, Cavalier, Divide, McHenry and 10 more62 min
Jun 19, 1:46 AM CDTMesoscale DiscussionSPCBenson, McHenry, Pierce, Ramsey, Towner, Walsh and 1 more89 min
Jun 19, 4:10 AM CDTMesoscale DiscussionSPCGrand Forks, Ramsey, Walsh95 min

Nearby

Severe Thunderstorm Watches in North Dakota, 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.