Alert archive / Indiana / Mesoscale Discussions in 2003

Mesoscale Discussion 778

May 5, 20035 states

The Storm Prediction Center issued this mesoscale discussion at May 5, 2003, 10:58 PM CDT for 5 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 5, 2003, 10:58 PM CDT (03:58 UTC)
Expired
May 6, 2003, 1:00 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 64 counties

Benton County, AR, Boone County, AR, Carroll County, AR, Fulton County, AR, Marion County, AR, Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, White County, IL, Williamson County, IL, Bartholomew County, IN, Clark County, IN, Crawford County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Lawrence County, IN, Martin County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Henderson County, KY, Union County, KY, Barry County, MO, Bollinger County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, Douglas County, MO, Howell County, MO, Iron County, MO, Madison County, MO, McDonald County, MO, Oregon County, MO, Ozark County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Scott County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Wayne County, MO

The radar

The Paducah radar (KPAH), 128 km from the middle of the area, began a volume at 04:00 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

Little Rock, AR (KLZK), launched 00:00Z, 4.0 hours before the alert went out and 305 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, Little Rock, AR at 00:00Z on 2003-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1533 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, Little Rock, AR at 00:00Z on 2003-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 square meters per square second.1939587897117Sfc1 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
1533 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
824 m above ground
0-6 km bulk shear
91 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
1.3
Supercell composite
4.7

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 5, 9:05 PM CDTTornado WatchSPCPhillips7 hr
May 6, 1:26 AM CDTMesoscale DiscussionSPCCrittenden, Lee, St. Francis3 hr
May 6, 1:50 AM CDTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lee and 4 more6 hr
May 6, 5:06 AM CDTMesoscale DiscussionSPCCrittenden, Cross, Lee, Mississippi, Phillips, St. Francis3 hr
May 6, 10:32 AM CDTMesoscale DiscussionSPCBenton, Crawford, Franklin, Sebastian, Washington118 min
May 6, 11:40 AM CDTTornado WatchSPCBenton, Boone, Carroll, Crawford, Franklin, Johnson and 4 more7 hr
May 6, 3:05 PM CDTTornado WatchSPCLogan, Polk, Scott, Sebastian6 hr
May 6, 5:33 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Franklin, Fulton, Johnson and 6 more117 min
May 6, 6:55 PM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 32 more5 hr
May 6, 9:37 AM CDTMesoscale DiscussionSPCBond, Clark, Clay, Clinton, Crawford, Cumberland and 15 more113 min
May 6, 11:55 AM CDTSevere Thunderstorm WatchSPCBond, Clay, Clinton, Crawford, Edwards, Effingham and 21 more4 hr
May 6, 1:23 PM CDTMesoscale DiscussionSPCBond, Clay, Clinton, Crawford, Edwards, Effingham and 17 more2 hr
May 6, 5:08 PM CDTMesoscale DiscussionSPCBond, Calhoun, Clinton, Fayette, Jackson, Jefferson and 9 more2 hr
May 6, 5:40 PM CDTTornado WatchSPCAlexander, Bond, Clay, Clinton, Crawford, Edwards and 28 more6 hr
May 6, 10:55 AM CDTMesoscale DiscussionSPCBartholomew, Brown, Clark, Crawford, Dearborn, Decatur and 23 more2 hr
May 6, 12:45 PM CDTMesoscale DiscussionSPCBarren, Breckinridge, Bullitt, Butler, Casey, Daviess and 20 more2 hr
May 6, 6:49 AM CDTMesoscale DiscussionSPCBarton, Bates, Benton, Caldwell, Camden, Carroll and 27 more3 hr
May 6, 7:55 AM CDTSevere Thunderstorm WatchSPCBarton, Bates, Benton, Camden, Cass, Cedar and 22 more5 hr
May 6, 11:29 AM CDTMesoscale DiscussionSPCBarton, Bates, Benton, Cass, Cedar, Clay and 18 more2 hr
May 6, 2:15 PM CDTTornado WatchSPCBoone, Callaway, Camden, Carter, Cole, Cooper and 27 more5 hr
May 6, 3:42 PM CDTMesoscale DiscussionSPCBarton, Bates, Benton, Boone, Callaway, Camden and 20 more2 hr
May 6, 6:35 PM CDTTornado WatchSPCBarry, Barton, Camden, Carter, Cedar, Christian and 31 more5 hr

Nearby

Mesoscale Discussions in Indiana, 2003Mesoscale Discussions in Missouri, 2003Mesoscale Discussions in Illinois, 2003Every mesoscale discussion 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.