Alert archive / Michigan / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 43, NWS Detroit, MI

June 27, 2007Washtenaw County, Wayne County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jun 27, 2007, 1:47 PM EDT for Washtenaw County, Wayne County, Michigan. It was in force for 73 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
Jun 27, 2007, 1:47 PM EDT (17:47 UTC)
Expired
Jun 27, 2007, 3:00 PM EDT
In force
73 min
Issued by
NWS Detroit, MI
Area
Counties, with a storm outline in the text

Counties Washtenaw County, MI, Wayne County, MI

The radar

The Detroit radar (KDTX), 48 km from the middle of the area, began a volume at 17:48 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

Detroit, MI (KDTX), launched 12:00Z, 5.8 hours before the alert went out and 51 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, Detroit, MI at 12:00Z on 2007-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 261 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, Detroit, MI at 12:00Z on 2007-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 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
261 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
1040 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
-37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 27, 1:27 PM EDT, 20 minutes earlier.

Area forecast discussion, Jun 27, 1:27 PM EDT, 20 minutes before
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Hazardous weather outlook, Jun 27, 1:35 PM EDT, 12 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
135 PM EDT WED JUN 27 2007

MIZ047>049-053>055-060>062-281430-
MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER-
135 PM EDT WED JUN 27 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR LOCATIONS ALONG AND NORTH OF
I-69.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS THUNDERSTORMS WILL CONTINUE THIS
AFTERNOON...TAPERING OFF AND ENDING THIS EVENING AS A COLD FRONT
SLIDES THROUGH THE AREA. THESE STORMS ARE GENERALLY NOT EXPECTED TO
BE SEVERE...BUT ONE OR TWO OF THE MOST INTENSE STORMS MAY PRODUCE
WIND GUSTS TO 60 MPH. THE STRONGER STORMS WILL ALSO PRODUCE SMALL
HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...ALONG WITH HEAVY
DOWNPOURS WHICH WILL CAUSE THE PONDING OF WATER ON ROADWAYS. STORM
MOTION WILL BE EAST TO SOUTHEAST AT 15 TO 20 MPH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY AND TONIGHT.

MIZ063-068>070-075-076-082-083-281430-
ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-
135 PM EDT WED JUN 27 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR LOCATIONS SOUTH OF I-69.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS THUNDERSTORMS WILL CONTINUE THIS
AFTERNOON...TAPERING OFF AND ENDING AROUND OR AFTER MIDNIGHT AS A
COLD FRONT SLIDES THROUGH THE AREA. THESE STORMS ARE GENERALLY NOT
EXPECTED TO BE SEVERE...BUT ONE OR TWO OF THE MOST INTENSE STORMS
MAY PRODUCE WIND GUSTS TO 60 MPH. THE STRONGER STORMS WILL ALSO
PRODUCE SMALL HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...ALONG WITH
HEAVY DOWNPOURS WHICH WILL CAUSE THE PONDING OF WATER ON ROADWAYS.
STORM MOTION WILL BE EAST TO SOUTHEAST AT 15 TO 20 MPH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A CHANCE OF THUNDERSTORMS...MAINLY NEAR THE OHIO BORER ON
THURSDAY...AS THE COLD FRONT EXITS THE REGION.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY AND TONIGHT.

LCZ422-423-460-LEZ444-LHZ421-422-441>443-462>464-281430-
ST. CLAIR RIVER-DETROIT RIVER-LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE-OUTER SAGINAW BAY-INNER SAGINAW BAY-
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
PORT SANILAC TO PORT HURON MI-
LAKE HURON OFFSHORE BEYOND 5 NM FROM PORT AUSTIN TO HARBOR BEACH MI-
LAKE HURON OFFSHORE BEYOND 5 NM FROM HARBOR BEACH TO PORT SANILAC MI-
LAKE HURON OFFSHORE BEYOND 5 NM FROM PORT SANILAC TO PORT HURON MI-
135 PM EDT WED JUN 27 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR LAKE ST CLAIR...THE MICHIGAN
WATERS OF LAKE ERIE AND LAKE HURON.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS THUNDERSTORMS WILL CONTINUE THIS
AFTERNOON...TAPERING OFF AND ENDING THIS EVENING AND TONIGHT FROM
NORTH TO SOUTH. THESE STORMS ARE GENERALLY NOT EXPECTED TO BE
SEVERE...BUT ONE OR TWO OF THE MOST INTENSE STORMS MAY PRODUCE WIND
GUSTS TO 50 KNOTS. THE STRONGER STORMS WILL ALSO PRODUCE SMALL
HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...ALONG WITH HEAVY
DOWNPOURS WHICH WILL CAUSE THE PONDING OF WATER ON ROADWAYS. STORM
MOTION WILL BE EAST TO SOUTHEAST AT 15 TO 20 MPH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A CHANCE OF THUNDERSTORMS OVER LAKE ST CLAIR AND THE
MICHIGAN WATERS OF LAKE ERIE ON THURSDAY...AS THE COLD FRONT
EXITS THE REGION.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT BE ANTICIPATED TODAY AND TONIGHT.

SF

YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 12:39 PM EDTSpecial Marine WarningDTX66 min
Jun 27, 1:11 PM EDTSpecial Marine WarningDTX64 min
Jun 27, 1:30 PM EDTSevere Thunderstorm WarningDTXLapeer39 min
Jun 27, 2:07 PM EDTSpecial Marine WarningDTX61 min
Jun 27, 2:19 PM EDTSevere Thunderstorm WarningDTXMidland42 min
Jun 27, 3:08 PM EDTSevere Thunderstorm WarningDTXBay, Saginaw82 min
Jun 27, 3:38 PM EDTSpecial Marine WarningDTX68 min
Jun 27, 4:39 PM EDTSpecial Marine WarningDTX66 min
Jun 27, 4:59 PM EDTSpecial Marine WarningDTX46 min
Jun 27, 5:17 PM EDTSevere Thunderstorm WarningDTXBay58 min
Jun 27, 5:51 PM EDTSevere Thunderstorm WarningDTXSaginaw69 min
Jun 27, 6:05 PM EDTSevere Thunderstorm WarningDTXMonroe25 min
Jun 27, 6:09 PM EDTSpecial Marine WarningDTX52 min
Jun 27, 6:27 PM EDTSevere Thunderstorm WarningDTXGenesee78 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.