Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 455, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 26, 1999, 7:17 PM CDT for Pawnee County, Oklahoma. It was in force for 43 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
- Aug 26, 1999, 7:17 PM CDT (00:17 UTC)
- Expired
- Aug 26, 1999, 8:00 PM CDT
- In force
- 43 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Pawnee County, OK
The radar
The Tulsa radar (KINX), 103 km from the middle of the area, began a volume at 00:18 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 |
|---|---|---|---|
| Aug 26, 7:27 PM CDT | Thunderstorm Wind | Ralston, OK | Large tree limbs were blown down. |
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
Lamont, OK (KLMN), launched 00:00Z, 0.3 hours before the alert went out and 78 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
- 1045 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 3330 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 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.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 26, 2:45 PM CDT, 4 hours 32 minutes earlier.
Area forecast discussion, Aug 26, 2:45 PM CDT, 4 hours 32 minutes before
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</html>The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 8:00 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 45 min |
| Aug 26, 8:47 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 43 min |
| Aug 26, 9:14 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 46 min |
| Aug 26, 10:00 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 45 min |
| Aug 26, 10:38 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Rogers | 52 min |
| Aug 26, 11:53 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 37 min |
| Aug 26, 11:55 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 50 min |
| Aug 27, 12:42 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee, Okmulgee | 48 min |
| Aug 26, 7:32 PM CDT | Severe Thunderstorm Warning | TSA | Franklin | 43 min |
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.