Alert archive / Michigan / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 110, NWS Marquette, MI

October 18, 2007Baraga County, Houghton County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Oct 18, 2007, 5:51 PM EDT for Baraga County, Houghton County, Michigan. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 18, 2007, 5:51 PM EDT (21:51 UTC)
Expired
Oct 18, 2007, 6:30 PM EDT
In force
39 min
Issued by
NWS Marquette, MI
Area
Storm-based polygon

Counties Baraga County, MI, Houghton County, MI

The radar

The Marquette radar (KMQT), 81 km from the middle of the area, began a volume at 21:52 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.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.9 hours before the alert went out and 265 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, Green Bay/Straub, WI at 12:00Z on 2007-10-18Temperature 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, Green Bay/Straub, WI at 12:00Z on 2007-10-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 445 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
640 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
445 m²/s²
0-3 km storm-relative helicity
558 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Marquette, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 18, 4:15 AM EDTWind AdvisoryMQTHoughton, Keweenaw11 hr
Oct 18, 4:24 PM EDTSevere Thunderstorm WarningMQTGogebic21 min
Oct 18, 4:34 PM EDTSpecial Marine WarningMQT41 min
Oct 18, 5:17 PM EDTSpecial Marine WarningMQT43 min
Oct 18, 5:45 PM EDTSpecial Marine WarningMQT45 min
Oct 18, 5:50 PM EDTSevere Thunderstorm WarningMQTOntonagon40 min
Oct 18, 6:10 PM EDTSevere Thunderstorm WarningMQTOntonagon35 min
Oct 18, 6:24 PM EDTSpecial Marine WarningMQT51 min
Oct 18, 6:49 PM EDTSpecial Marine WarningMQT56 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2007Every severe thunderstorm warning 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.