Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 482, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jun 24, 1999, 9:14 AM CDT for Major County, Woods County, Woodward County, Oklahoma. It was in force for 46 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 24, 1999, 9:14 AM CDT (14:14 UTC)
- Expired
- Jun 24, 1999, 10:00 AM CDT
- In force
- 46 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Major County, OK, Woods County, OK, Woodward County, OK
The radar
The Vance AFB radar (KVNX), 73 km from the middle of the area, began a volume at 14:17 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 24, 9:34 AM CDT | Hail 0.75 | Chester, OK |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Dodge City, (KDDC), launched 12:00Z, 2.2 hours before the alert went out and 167 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
- 3062 J/kg
- Mixed-layer CIN
- -144 J/kg
- Mixed-layer LCL
- 1096 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jun 24, 8:52 AM CDT | Severe Thunderstorm Warning | OUN | Ellis, Roger Mills | 38 min |
| Jun 24, 9:37 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa | 43 min |
| Jun 24, 10:16 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Grant | 59 min |
| Jun 24, 10:20 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Kingfisher | 55 min |
| Jun 24, 11:08 AM CDT | Flash Flood Warning | OUN | Grant, Kay | 4 hr |
| Jun 24, 12:03 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Logan | 42 min |
| Jun 24, 12:23 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 27 min |
| Jun 24, 12:45 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln | 45 min |
| Jun 24, 1:07 PM CDT | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 53 min |
| Jun 24, 1:20 PM CDT | Flash Flood Warning | OUN | Lincoln | 115 min |
| Jun 24, 1:33 PM CDT | Severe Thunderstorm Warning | OUN | Hughes | 42 min |
| Jun 24, 1:42 PM CDT | Severe Thunderstorm Warning | OUN | Pontotoc | 48 min |
| Jun 24, 2:22 PM CDT | Severe Thunderstorm Warning | OUN | Hughes | 53 min |
| Jun 24, 2:32 PM CDT | Severe Thunderstorm Warning | OUN | Pontotoc | 43 min |
| Jun 24, 4:10 PM CDT | Flash Flood Warning | OUN | Murray, Pontotoc | 3 hr |
| Jun 24, 4:40 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Murray, Stephens | 50 min |
| Jun 24, 4:52 PM CDT | Severe Thunderstorm Warning | OUN | Ellis | 53 min |
| Jun 24, 6:15 PM CDT | Severe Thunderstorm Warning | OUN | Comanche | 45 min |
| Jun 24, 6:28 PM CDT | Flash Flood Warning | OUN | Comanche | 3 hr |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.