Alert archive / Kansas / Mesoscale Discussions in 2003

Mesoscale Discussion 2031

July 31, 200312 counties in Kansas; 9 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jul 31, 2003, 2:04 PM CDT for 12 counties in Kansas; 9 counties in Missouri. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 31, 2003, 2:04 PM CDT (19:04 UTC)
Expired
Jul 31, 2003, 4:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 21 counties

Allen County, KS, Anderson County, KS, Bourbon County, KS, Coffey County, KS, Crawford County, KS, Franklin County, KS, Johnson County, KS, Linn County, KS, Miami County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Barton County, MO, Bates County, MO, Cass County, MO, Cedar County, MO, Dade County, MO, Henry County, MO, Jackson County, MO, St. Clair County, MO, Vernon County, MO

The radar

The Pleasant Hill radar (KEAX), 93 km from the middle of the area, began a volume at 19:04 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

Topeka, KS (KTOP), launched 12:00Z, 7.1 hours before the alert went out and 94 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, Topeka, KS at 12:00Z on 2003-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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, Topeka, KS at 12:00Z on 2003-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
4 J/kg
Mixed-layer CIN
-490 J/kg
Mixed-layer LCL
2813 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 31, 2:16 PM CDTMesoscale DiscussionSPCClay, Cloud, Decatur, Ellis, Ellsworth, Graham and 12 more89 min
Jul 31, 2:35 PM CDTSevere Thunderstorm WatchSPCCheyenne, Cloud, Decatur, Graham, Jewell, Lincoln and 13 more5 hr
Jul 31, 4:36 PM CDTMesoscale DiscussionSPCBarton, Edwards, Ellis, Ellsworth, Finney, Gove and 16 more114 min
Jul 31, 4:45 PM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Barton, Butler, Chase, Chautauqua and 45 more5 hr
Jul 31, 4:45 PM CDTSevere Thunderstorm WatchSPCBourbon, Cherokee, Crawford, Linn5 hr

Nearby

Mesoscale Discussions in Kansas, 2003Mesoscale Discussions in Missouri, 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.