Alert archive / Oklahoma / Mesoscale Discussions in 2004

Mesoscale Discussion 1479

July 3, 200441 counties in Oklahoma; Wichita County, Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2004, 1:01 AM CDT for 41 counties in Oklahoma; Wichita County, Texas. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
Jul 3, 2004, 1:01 AM CDT (06:01 UTC)
Expired
Jul 3, 2004, 2:30 AM CDT
In force
89 min
Issued by
the Storm Prediction Center
All 42 counties

Atoka County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Creek County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Haskell County, OK, Hughes County, OK, Jackson County, OK, Jefferson County, OK, Johnston County, OK, Kingfisher County, OK, Kiowa County, OK, Latimer County, OK, Lincoln County, OK, Logan County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Tulsa County, OK, Wagoner County, OK, Washita County, OK, Wichita County, TX

The radar

The Norman radar (KTLX), 50 km from the middle of the area, began a volume at 06:03 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

Norman, OK (KOUN), launched 00:00Z, 6.0 hours before the alert went out and 42 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, Norman, OK at 00:00Z on 2004-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3602 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, Norman, OK at 00:00Z on 2004-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
3602 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1156 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
1.1
Supercell composite
9.0

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 2, 7:17 PM CDTMesoscale DiscussionSPCComanche, Cotton, Greer, Harmon, Jackson, Kiowa and 1 more88 min
Jul 2, 7:51 PM CDTMesoscale DiscussionSPCCimarron, Texas84 min
Jul 2, 8:26 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Coal, Creek, Delaware, Haskell and 14 more94 min
Jul 2, 9:19 PM CDTMesoscale DiscussionSPCBeaver, Cimarron, Ellis, Harper, Roger Mills, Texas56 min
Jul 2, 10:39 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Creek, Delaware, Haskell, Latimer and 11 more96 min
Jul 3, 1:15 AM CDTSevere Thunderstorm WatchSPCCaddo, Carter, Comanche, Cotton, Garvin, Grady and 10 more6 hr
Jul 3, 3:19 AM CDTMesoscale DiscussionSPCHaskell, Latimer, LeFlore, McCurtain, McIntosh, Muskogee and 3 more2 hr
Jul 3, 3:32 AM CDTMesoscale DiscussionSPCCarter, Cotton, Jefferson, Love, Tillman118 min
Jul 3, 6:15 AM CDTMesoscale DiscussionSPCBryan, Choctaw, Love, Marshall60 min
Jul 3, 4:05 AM CDTSevere Thunderstorm WatchSPCCamp, Clay, Collin, Cooke, Dallas, Delta and 22 more4 hr

Nearby

Mesoscale Discussions in Oklahoma, 2004Mesoscale Discussions in Texas, 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.