Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 474, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jul 7, 1994, 11:30 PM CDT for 4 counties in Oklahoma. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- Jul 7, 1994, 11:30 PM CDT (04:30 UTC)
- Expired
- Jul 8, 1994, 12:15 AM CDT
- In force
- 45 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Carter County, OK, Johnston County, OK, Murray County, OK, Pontotoc County, OK
The radar
The Norman radar (KTLX), 104 km from the middle of the area, began a volume at 04:33 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, 4.5 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
- 3614 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1505 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 6.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 7:55 PM CDT | Severe Thunderstorm Warning | OUN | Canadian | 50 min |
| Jul 7, 8:15 PM CDT | Severe Thunderstorm Warning | OUN | Canadian, Cleveland, Grady, McClain, Oklahoma | 60 min |
| Jul 7, 8:26 PM CDT | Severe Thunderstorm Warning | OUN | Caddo | 49 min |
| Jul 7, 8:54 PM CDT | Severe Thunderstorm Warning | OUN | Comanche | 66 min |
| Jul 7, 9:11 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Grady, McClain | 49 min |
| Jul 7, 9:11 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Payne | 49 min |
| Jul 7, 9:55 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, McClain, Pottawatomie | 50 min |
| Jul 7, 9:55 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Garvin, Grady, Stephens | 50 min |
| Jul 7, 9:55 PM CDT | Severe Thunderstorm Warning | OUN | Cotton | 50 min |
| Jul 7, 10:36 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Garvin, McClain, Murray, Pontotoc, Stephens | 69 min |
| Jul 7, 10:36 PM CDT | Severe Thunderstorm Warning | OUN | Cotton, Jefferson | 69 min |
| Jul 7, 10:36 PM CDT | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 69 min |
| Jul 7, 11:30 PM CDT | Severe Thunderstorm Warning | OUN | Jefferson | 45 min |
| Jul 7, 11:30 PM CDT | Severe Thunderstorm Warning | OUN | Love | 45 min |
| Jul 7, 11:45 PM CDT | Severe Thunderstorm Warning | OUN | Marshall | 30 min |
| Jul 7, 11:45 PM CDT | Severe Thunderstorm Warning | OUN | Coal | 30 min |
| Jul 8, 12:08 AM CDT | Severe Thunderstorm Warning | OUN | Atoka, Coal, Johnston | 67 min |
| Jul 8, 12:08 AM CDT | Severe Thunderstorm Warning | OUN | Bryan, Love, Marshall | 67 min |
| Jul 8, 1:02 AM CDT | Severe Thunderstorm Warning | OUN | Bryan | 58 min |
| Jul 7, 10:57 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 48 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1994Every severe thunderstorm warning in 1994
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.