Alert archive / Michigan / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 80

March 28, 200321 counties in Indiana; 31 counties in Michigan; 5 counties in Ohio

The Storm Prediction Center issued this severe thunderstorm watch at Mar 28, 2003, 1:20 PM EST for 21 counties in Indiana; 31 counties in Michigan; 5 counties in Ohio. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 28, 2003, 1:20 PM EST (18:20 UTC)
Expired
Mar 28, 2003, 7:00 PM EST
In force
6 hr
Issued by
the Storm Prediction Center
All 57 counties

Adams County, IN, Allen County, IN, Carroll County, IN, Cass County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Huntington County, IN, Kosciusko County, IN, LaGrange County, IN, Marshall County, IN, Miami County, IN, Noble County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Wabash County, IN, Wells County, IN, White County, IN, Whitley County, IN, Arenac County, MI, Barry County, MI, Bay County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gladwin County, MI, Gratiot County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lenawee County, MI, Livingston County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Osceola County, MI, Saginaw County, MI, Saint Joseph County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Defiance County, OH, Fulton County, OH, Paulding County, OH, Van Wert County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 86 km from the middle of the area, began a volume at 18:21 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 28, 3:31 PM ESTSevere Thunderstorm WarningIWXAllen, DeKalb44 min
Mar 28, 3:58 PM ESTSevere Thunderstorm WarningIWXSteuben32 min
Mar 28, 4:04 PM ESTSevere Thunderstorm WarningIWXBranch, Hillsdale41 min
Mar 28, 4:18 PM ESTSevere Thunderstorm WarningGRRJackson27 min
Mar 28, 4:49 PM ESTSevere Thunderstorm WarningDTXShiawassee56 min
Mar 28, 5:25 PM ESTSevere Thunderstorm WarningDTXLenawee, Livingston, Washtenaw50 min
Mar 28, 6:14 PM ESTSevere Thunderstorm WarningDTXGenesee31 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

Detroit, MI (KDTX), launched 12:00Z, 6.3 hours before the alert went out and 170 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 2003-03-28Temperature 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, Detroit, MI at 12:00Z on 2003-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 416 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
1115 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
416 m²/s²
0-3 km storm-relative helicity
436 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 28, 8:35 AM ESTMesoscale DiscussionSPCAllen, Benton, Boone, Carroll, Cass, Clay and 41 more3 hr
Mar 28, 11:22 AM ESTMesoscale DiscussionSPCBenton, Boone, Brown, Carroll, Cass, Clay and 52 more113 min
Mar 28, 2:20 PM ESTSevere Thunderstorm WatchSPCBartholomew, Blackford, Boone, Brown, Clark, Clay and 51 more6 hr
Mar 28, 3:57 PM ESTMesoscale DiscussionSPCAdams, Allen, Cass, DeKalb, Elkhart, Fulton and 9 more2 hr
Mar 28, 4:30 PM ESTMesoscale DiscussionSPCBartholomew, Blackford, Boone, Brown, Clark, Clay and 50 more2 hr
Mar 28, 6:27 PM ESTMesoscale DiscussionSPCBartholomew, Blackford, Boone, Brown, Clark, Clay and 51 more93 min
Mar 28, 12:54 PM ESTMesoscale DiscussionSPCArenac, Barry, Bay, Branch, Calhoun, Clare and 30 more2 hr
Mar 28, 5:58 PM ESTMesoscale DiscussionSPCArenac, Bay, Calhoun, Clinton, Eaton, Genesee and 21 more92 min
Mar 28, 6:00 PM ESTSevere Thunderstorm WatchSPCGenesee, Huron, Lapeer, Lenawee, Livingston, Macomb and 7 more4 hr

Nearby

Severe Thunderstorm Watches in Michigan, 2003Severe Thunderstorm Watches in Indiana, 2003Severe Thunderstorm Watches in Ohio, 2003Every severe thunderstorm watch in 2003

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.