Alert archive / Michigan / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 32, NWS Marquette, MI

August 14, 2015Dickinson County, Menominee County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Aug 14, 2015, 4:47 PM CDT for Dickinson County, Menominee County, Michigan. It was in force for 25 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
Aug 14, 2015, 4:47 PM CDT (21:47 UTC)
Expired
Aug 14, 2015, 5:12 PM CDT
In force
25 min
Issued by
NWS Marquette, MI
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Dickinson County, MI, Menominee County, MI

The radar

The Marquette radar (KMQT), 86 km from the middle of the area, began a volume at 21:49 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, 9.8 hours before the alert went out and 147 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 2015-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2294 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, Green Bay/Straub, WI at 12:00Z on 2015-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.193958Sfc1 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
2294 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
950 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Marquette, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 14, 3:55 PM CDT, 52 minutes earlier.

Area forecast discussion, Aug 14, 3:55 PM CDT, 52 minutes before
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Hazardous weather outlook, Aug 14, 3:12 PM CDT, 1 hour 35 minutes before
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In the hours before

Special weather statement, Aug 14, 11:38 AM CDT, 5 hours 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MARQUETTE MI
1238 PM EDT FRI AUG 14 2015

MIZ006-013-141715-
DELTA MI-ALGER MI-
1238 PM EDT FRI AUG 14 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL DELTA AND
SOUTHWESTERN ALGER COUNTIES UNTIL 115 PM EDT...

AT 1237 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
OVER TRENARY...OR 21 MILES SOUTHWEST OF MUNISING...MOVING SOUTHEAST
AT 10 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH CENTRAL DELTA
AND SOUTHWESTERN ALGER COUNTIES...INCLUDING THE FOLLOWING
LOCATIONS...ROUND LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4614 8711 4628 8693 4616 8665 4596 8691
TIME...MOT...LOC 1637Z 312DEG 7KT 4617 8695

07
Special weather statement, Aug 14, 12:13 PM CDT, 4 hours 34 minutes before
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Special weather statement, Aug 14, 1:45 PM CDT, 3 hours 2 minutes before
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Special weather statement, Aug 14, 2:03 PM CDT, 2 hours 44 minutes before
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Special weather statement, Aug 14, 2:44 PM CDT, 2 hours 3 minutes before
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Special weather statement, Aug 14, 3:04 PM CDT, 1 hour 43 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 7:48 PM CDTSpecial Weather StatementMQTDelta57 min
Aug 14, 11:01 AM CDTSpecial Weather StatementMQTAlger59 min
Aug 14, 11:29 AM CDTSpecial Weather StatementMQTAlger31 min
Aug 14, 11:38 AM CDTSpecial Weather StatementMQTDelta37 min
Aug 14, 11:43 AM CDTSevere Thunderstorm WarningMQTDelta32 min
Aug 14, 12:13 PM CDTSpecial Weather StatementMQTDelta47 min
Aug 14, 12:33 PM CDTSevere Thunderstorm WarningMQTDelta42 min
Aug 14, 12:37 PM CDTSevere Thunderstorm WarningMQTDickinson, Menominee53 min
Aug 14, 1:13 PM CDTSevere Thunderstorm WarningMQTDelta, Menominee32 min
Aug 14, 1:15 PM CDTSpecial Marine WarningMQT90 min
Aug 14, 1:45 PM CDTSpecial Weather StatementMQTMenominee45 min
Aug 14, 2:03 PM CDTSpecial Weather StatementMQTMenominee42 min
Aug 14, 2:47 PM CDTSevere Thunderstorm WarningMQTMenominee13 min
Aug 14, 3:14 PM CDTAreal Flood AdvisoryMQTMenominee3 hr
Aug 14, 4:07 PM CDTSevere Thunderstorm WarningMQTDickinson, Marquette53 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2015Every severe thunderstorm warning in 2015

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.