Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1995
Severe Thunderstorm Warning 171, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Apr 29, 1995, 6:34 PM CDT for Bryan County, Marshall County, Oklahoma. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Apr 29, 1995, 6:34 PM CDT (23:34 UTC)
- Expired
- Apr 29, 1995, 7:15 PM CDT
- In force
- 41 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Bryan County, OK, Marshall County, OK
The radar
The Norman radar (KTLX), 164 km from the middle of the area, began a volume at 23:38 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 12:00Z, 11.6 hours before the alert went out and 159 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
- 1053 J/kg
- Mixed-layer CIN
- -285 J/kg
- Mixed-layer LCL
- 612 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 541 m²/s²
- 0-3 km storm-relative helicity
- 736 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.7
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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 29, 3:36 PM CDT, 2 hours 58 minutes earlier.
Area forecast discussion, Apr 29, 3:36 PM CDT, 2 hours 58 minutes before
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Local storm report, Apr 29, 2:44 PM CDT, 3 hours 50 minutes before
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</html>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 1:07 AM CDT | Severe Thunderstorm Warning | OUN | Kay | 38 min |
| Apr 29, 1:50 AM CDT | Severe Thunderstorm Warning | OUN | Kay | 40 min |
| Apr 29, 2:25 AM CDT | Flash Flood Warning | OUN | Grant | 3 hr |
| Apr 29, 2:40 AM CDT | Flash Flood Warning | OUN | Kay | 3 hr |
| Apr 29, 3:07 AM CDT | Severe Thunderstorm Warning | OUN | Grant | 38 min |
| Apr 29, 5:00 AM CDT | Flash Flood Warning | OUN | Kay | 5 hr |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1995Every severe thunderstorm warning in 1995
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.