Alert archive / Ohio / Mesoscale Discussions in 2004

Mesoscale Discussion 858

May 24, 20044 states

The Storm Prediction Center issued this mesoscale discussion at May 24, 2004, 2:09 AM EDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2004, 2:09 AM EDT (06:09 UTC)
Expired
May 24, 2004, 4:15 AM EDT
In force
2 hr
Issued by
the Storm Prediction Center
All 66 counties

Clinton County, MI, Eaton County, MI, Genesee County, MI, Gratiot County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Clair County, MI, Shiawassee County, MI, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Auglaize County, OH, Belmont County, OH, Butler County, OH, Carroll County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Darke County, OH, Defiance County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Fulton County, OH, Geauga County, OH, Guernsey County, OH, Hamilton County, OH, Harrison County, OH, Henry County, OH, Hocking County, OH, Holmes County, OH, Jefferson County, OH, Lake County, OH, Licking County, OH, Lucas County, OH, Mahoning County, OH, Mercer County, OH, Miami County, OH, Monroe County, OH, Montgomery County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Paulding County, OH, Perry County, OH, Pickaway County, OH, Putnam County, OH, Shelby County, OH, Stark County, OH, Tuscarawas County, OH, Van Wert County, OH, Warren County, OH, Williams County, OH, Greene County, PA, Washington County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV

The radar

The Cleveland radar (KCLE), 111 km from the middle of the area, began a volume at 06:10 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 6.2 hours before the alert went out and 180 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, Cncnati-Daytn, OH at 00:00Z on 2004-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 839 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, Cncnati-Daytn, OH at 00:00Z on 2004-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 173 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
839 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1585 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.3
Supercell composite
5.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 9:40 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 18 more65 min
May 23, 10:50 PM EDTSevere Thunderstorm WatchSPCAllegan, Barry, Branch, Calhoun, Cass, Clinton and 17 more6 hr
May 24, 12:26 AM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Clinton and 18 more64 min
May 24, 12:30 AM EDTSevere Thunderstorm WatchSPCAshland, Belmont, Carroll, Champaign, Clark, Clinton and 47 more6 hr
May 24, 4:55 AM EDTMesoscale DiscussionSPCTrumbull95 min
May 24, 10:03 AM EDTMesoscale DiscussionSPCBedford, Berks, Blair, Bradford, Bucks, Carbon and 31 more117 min
May 24, 11:00 AM EDTSevere Thunderstorm WatchSPCCarbon, Columbia, Lackawanna, Lehigh, Luzerne, Monroe and 5 more5 hr
May 24, 12:24 PM EDTMesoscale DiscussionSPCBlair, Bradford, Cambria, Cameron, Centre, Clearfield and 12 more2 hr
May 24, 12:40 PM EDTSevere Thunderstorm WatchSPCAllegheny, Armstrong, Beaver, Blair, Bradford, Butler and 23 more4 hr
May 24, 3:00 PM EDTMesoscale DiscussionSPCBerks, Bucks, Carbon, Columbia, Lackawanna, Lehigh and 11 more90 min
May 24, 4:55 PM EDTSevere Thunderstorm WatchSPCAdams, Berks, Bradford, Bucks, Carbon, Chester and 28 more4 hr
May 24, 5:43 PM EDTMesoscale DiscussionSPCAdams, Berks, Bradford, Bucks, Carbon, Chester and 27 more47 min
May 24, 7:25 PM EDTMesoscale DiscussionSPCBerks, Bradford, Bucks, Carbon, Chester, Columbia and 24 more95 min

Nearby

Mesoscale Discussions in Ohio, 2004Mesoscale Discussions in Michigan, 2004Mesoscale Discussions in West Virginia, 2004Every mesoscale discussion in 2004

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.