Alert archive / Arkansas / Mesoscale Discussions in 2004

Mesoscale Discussion 196

March 17, 2004Benton County, Carroll County, Arkansas

The Storm Prediction Center issued this mesoscale discussion at Mar 17, 2004, 7:07 PM CST for Benton County, Carroll County, Arkansas. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued
Mar 17, 2004, 7:07 PM CST (01:07 UTC)
Expired
Mar 17, 2004, 8:00 PM CST
In force
53 min
Issued by
the Storm Prediction Center

Counties Benton County, AR, Carroll County, AR

The radar

The Springfield radar (KSGF), 103 km from the middle of the area, began a volume at 01:09 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

Springfield, MO (KSGF), launched 00:00Z, 1.1 hours before the alert went out and 55 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, Springfield, MO at 00:00Z on 2004-03-18Temperature 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, Springfield, MO at 00:00Z on 2004-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 square meters per square second.1939587897Sfc1 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
1939 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
333 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
Mar 17, 8:01 PM CSTMesoscale DiscussionSPCBenton, Crawford, Franklin, Johnson, Logan, Madison and 4 more89 min
Mar 17, 9:38 PM CSTMesoscale DiscussionSPCClark, Crawford, Dallas, Franklin, Garland, Grant and 12 more97 min
Mar 17, 10:00 PM CSTSevere Thunderstorm WatchSPCClark, Cleveland, Conway, Crawford, Dallas, Faulkner and 17 more5 hr
Mar 17, 11:55 PM CSTMesoscale DiscussionSPCClark, Cleveland, Conway, Crawford, Dallas, Faulkner and 16 more95 min

Nearby

Mesoscale Discussions in Arkansas, 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.