Alert archive / Oklahoma / Mesoscale Discussions in 2015
Mesoscale Discussion 172
The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2015, 9:24 PM CDT for 35 counties in Oklahoma. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- Mar 31, 2015, 9:24 PM CDT (02:24 UTC)
- Expired
- Mar 31, 2015, 10:30 PM CDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
All 35 counties
Atoka County, OK, Beckham County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Choctaw County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Hughes County, OK, Jackson County, OK, Jefferson County, OK, Johnston County, OK, Kiowa County, OK, Love County, OK, Marshall County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Okfuskee County, OK, Oklahoma County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Roger Mills County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK
The radar
The Norman radar (KTLX), 65 km from the middle of the area, began a volume at 02:28 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, 2.4 hours before the alert went out and 49 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
- 1642 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 1964 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
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 |
|---|---|---|---|---|
| Mar 31, 8:14 PM CDT | Mesoscale Discussion | SPC | Atoka, Beckham, Blaine, Bryan, Caddo, Canadian and 39 more | 91 min |
| Mar 31, 9:40 PM CDT | Severe Thunderstorm Watch | SPC | Blaine, Caddo, Canadian, Carter, Cleveland, Coal and 31 more | 6 hr |
| Apr 1, 1:16 AM CDT | Mesoscale Discussion | SPC | Coal, Haskell, Hughes, Latimer, LeFlore, McIntosh and 2 more | 89 min |
| Apr 1, 12:39 PM CDT | Mesoscale Discussion | SPC | Adair, Craig, Delaware, Ottawa | 3 hr |
| Apr 1, 3:57 PM CDT | Mesoscale Discussion | SPC | Beaver, Beckham, Ellis, Harper, Roger Mills | 93 min |
Nearby
Mesoscale Discussions in Oklahoma, 2015Every mesoscale discussion in 2015
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.