Alert archive / Oklahoma / Mesoscale Discussions in 2008

Mesoscale Discussion 143

February 4, 200812 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Feb 4, 2008, 7:48 PM CST for 12 counties in Oklahoma. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: Feb 4, 2008, 7:48 PM CST (01:48 UTC)
Expired: Feb 4, 2008, 9:15 PM CST
In force: 87 min
Issued by: the Storm Prediction Center

Counties Craig County, OK, Creek County, OK, Delaware County, OK, Lincoln County, OK, Mayes County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 43 km from the middle of the area, began a volume at 01:47 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

Norman, OK (KOUN), launched 00:00Z, 1.8 hours before the alert went out and 154 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3773 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 203 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.

Issued	Product	Office	Counties	Lasted
Feb 5, 2:31 AM CST	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 24 more	2 hr
Feb 5, 5:03 AM CST	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Cherokee, Choctaw, Cleveland and 37 more	117 min
Feb 5, 6:39 AM CST	Mesoscale Discussion	SPC	Adair, LeFlore, Sequoyah	3 hr
Feb 5, 10:18 AM CST	Mesoscale Discussion	SPC	Adair, Atoka, Cherokee, Coal, Delaware, Haskell and 13 more	87 min
Feb 5, 11:56 AM CST	Tornado Watch	SPC	Atoka, Bryan, Choctaw, Haskell, Latimer, LeFlore and 4 more	7 hr
Feb 5, 2:15 PM CST	Mesoscale Discussion	SPC	Atoka, Bryan, Choctaw, Haskell, Latimer, McCurtain and 1 more	90 min
Feb 5, 3:17 PM CST	Mesoscale Discussion	SPC	LeFlore, McCurtain	88 min

Nearby

Mesoscale Discussions in Oklahoma, 2008 Every mesoscale discussion in 2008

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.