Alert archive / Oklahoma / Mesoscale Discussions in 2006
Mesoscale Discussion 646
The Storm Prediction Center issued this mesoscale discussion at Apr 24, 2006, 10:30 PM CDT for 33 counties in Oklahoma. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Apr 24, 2006, 10:30 PM CDT (03:30 UTC)
- Expired
- Apr 25, 2006, 12:00 AM CDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 33 counties
Adair County, OK, Atoka County, OK, Carter County, OK, Cherokee County, OK, Cleveland County, OK, Coal County, OK, Creek County, OK, Delaware County, OK, Garvin County, OK, Haskell County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Lincoln County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Osage County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK
The radar
The Norman radar (KTLX), 88 km from the middle of the area, began a volume at 03:31 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, 3.5 hours before the alert went out and 97 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.
- Mixed-layer CAPE
- 2326 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 1122 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.9
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 8:27 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Caddo, Canadian, Carter, Cleveland and 21 more | 33 min |
| Apr 24, 8:43 PM CDT | Tornado Watch | SPC | Adair, Atoka, Carter, Cherokee, Cleveland, Coal and 33 more | 5 hr |
| Apr 25, 1:11 AM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, Haskell, Hughes and 9 more | 64 min |
| Apr 25, 1:35 AM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Haskell and 13 more | 5 hr |
| Apr 25, 4:57 AM CDT | Mesoscale Discussion | SPC | Bryan, Choctaw, McCurtain, Pushmataha | 2 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2006Every mesoscale discussion in 2006
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.