Alert archive / Ohio / Mesoscale Discussions in 2005

Mesoscale Discussion 1874

July 25, 20054 states

The Storm Prediction Center issued this mesoscale discussion at Jul 25, 2005, 8:10 PM CDT for 4 states. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Jul 25, 2005, 8:10 PM CDT (01:10 UTC)
Expired
Jul 25, 2005, 9:15 PM CDT
In force
65 min
Issued by
the Storm Prediction Center
All 40 counties

Cook County, IL, DuPage County, IL, Kane County, IL, Lake County, IL, Adams County, IN, Allen County, IN, DeKalb County, IN, Elkhart County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Marshall County, IN, Noble County, IN, Porter County, IN, Saint Joseph County, IN, Wells County, IN, Whitley County, IN, Berrien County, MI, Cass County, MI, Adams County, OH, Allen County, OH, Auglaize County, OH, Brown County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Darke County, OH, Defiance County, OH, Fayette County, OH, Greene County, OH, Highland County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Paulding County, OH, Pike County, OH, Scioto County, OH, Shelby County, OH, Van Wert County, OH, Warren County, OH

The radar

The Northern Indiana radar (KIWX), 91 km from the middle of the area, began a volume at 01:10 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.2 hours before the alert went out and 281 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, Lincoln, IL at 00:00Z on 2005-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2558 joules per kilogram.LCLEL10008507005003002001001 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, Lincoln, IL at 00:00Z on 2005-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 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
2558 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1613 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.7
Supercell composite
13.6

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
Jul 25, 11:25 PM CDTSevere Thunderstorm WatchSPCBoone, Lake, McHenry5 hr
Jul 26, 10:31 AM CDTMesoscale DiscussionSPCCass, Champaign, DeWitt, Ford, Fulton, Iroquois and 14 more89 min
Jul 26, 11:00 AM CDTSevere Thunderstorm WatchSPCChampaign, Clark, Coles, Cumberland, Douglas, Edgar and 5 more7 hr
Jul 26, 2:24 PM CDTMesoscale DiscussionSPCClay, Crawford, Edwards, Franklin, Gallatin, Hamilton and 13 more66 min
Jul 26, 2:45 PM CDTSevere Thunderstorm WatchSPCClay, Crawford, Edwards, Franklin, Gallatin, Hamilton and 16 more7 hr
Jul 26, 4:59 PM CDTMesoscale DiscussionSPCChampaign, Coles, Cumberland, DeWitt, Douglas, Edgar and 12 more61 min
Jul 26, 5:40 PM CDTSevere Thunderstorm WatchSPCChampaign, Clark, Coles, Cumberland, Douglas, Edgar and 8 more6 hr
Jul 26, 2:30 PM CDTSevere Thunderstorm WatchSPCAdams, Dearborn, Jay, Ohio, Randolph, Union and 1 more8 hr
Jul 26, 1:31 AM CDTMesoscale DiscussionSPCArenac, Bay, Genesee, Lapeer, Livingston, Oakland and 3 more89 min
Jul 26, 3:33 AM CDTMesoscale DiscussionSPCArenac, Bay, Genesee, Lapeer, Macomb, Oakland and 2 more87 min
Jul 26, 1:00 PM CDTMesoscale DiscussionSPCCarroll, Columbiana, Coshocton, Guernsey, Harrison, Holmes and 9 more90 min
Jul 26, 1:58 PM CDTMesoscale DiscussionSPCAshland, Carroll, Columbiana, Cuyahoga, Geauga, Harrison and 13 more62 min

Nearby

Mesoscale Discussions in Ohio, 2005Mesoscale Discussions in Indiana, 2005Mesoscale Discussions in Illinois, 2005Every mesoscale discussion in 2005

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.