Alert archive / Oklahoma / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 735
The Storm Prediction Center issued this severe thunderstorm watch at Jul 12, 2003, 11:25 PM CDT for 35 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2003, 11:25 PM CDT (04:25 UTC)
- Expired
- Jul 13, 2003, 5:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Creek County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Hughes County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Tulsa County, OK, Washington County, OK, Washita County, OK, Woods County, OK
The radar
The Vance AFB radar (KVNX), 81 km from the middle of the area, began a volume at 04:28 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.
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 1:58 AM CDT | Severe Thunderstorm Warning | OUN | Blaine | 47 min |
| Jul 13, 2:00 AM CDT | Severe Thunderstorm Warning | OUN | Caddo | 45 min |
| Jul 13, 2:19 AM CDT | Severe Thunderstorm Warning | OUN | Major | 41 min |
| Jul 13, 2:43 AM CDT | Severe Thunderstorm Warning | OUN | Caddo | 47 min |
| Jul 13, 2:49 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Woods | 41 min |
| Jul 13, 2:51 AM CDT | Severe Thunderstorm Warning | OUN | Custer | 39 min |
| Jul 13, 3:13 AM CDT | Severe Thunderstorm Warning | OUN | Blaine | 47 min |
| Jul 13, 3:18 AM CDT | Severe Thunderstorm Warning | OUN | Kiowa | 42 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 4.4 hours before the alert went out and 101 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
- 3350 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1897 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 355 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 33.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 10:12 PM CDT | Mesoscale Discussion | SPC | Cherokee, Creek, Garfield, Grant, Kay, Lincoln and 15 more | 2 hr |
| Jul 13, 2:35 AM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Caddo, Canadian, Cleveland, Comanche and 28 more | 115 min |
| Jul 13, 4:11 AM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Caddo, Canadian, Cleveland, Coal and 29 more | 64 min |
| Jul 13, 2:56 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Canadian, Garfield, Grant, Kingfisher and 2 more | 94 min |
Nearby
Severe Thunderstorm Watches in Oklahoma, 2003Every severe thunderstorm watch in 2003
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.