Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 572, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Aug 29, 2018, 6:15 PM CDT for Hughes County, Oklahoma. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 29, 2018, 6:15 PM CDT (23:15 UTC)
- Expired
- Aug 29, 2018, 6:45 PM CDT
- In force
- 30 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 70.0 mph
County Hughes County, OK
The radar
The Norman radar (KTLX), 99 km from the middle of the area, began a volume at 23:18 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.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 11.3 hours before the alert went out and 302 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
- 1738 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 871 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 242 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
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 Aug 29, 2:15 PM CDT, 4 hours earlier.
Area forecast discussion, Aug 29, 2:15 PM CDT, 4 hours before
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</html>Hazardous weather outlook, Aug 29, 11:40 AM CDT, 6 hours 35 minutes before
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Special weather statement, Aug 29, 6:11 PM CDT, 4 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 |
|---|---|---|---|---|
| Aug 28, 7:26 PM CDT | Special Weather Statement | OUN | Dewey | 34 min |
| Aug 28, 7:32 PM CDT | Areal Flood Advisory | OUN | Ellis | 3 hr |
| Aug 28, 7:59 PM CDT | Special Weather Statement | OUN | Roger Mills | 31 min |
| Aug 28, 8:05 PM CDT | Special Weather Statement | OUN | Grant | 10 min |
| Aug 28, 8:08 PM CDT | Special Weather Statement | OUN | Grant | 22 min |
| Aug 28, 8:24 PM CDT | Special Weather Statement | OUN | Grant | 36 min |
| Aug 28, 8:29 PM CDT | Special Weather Statement | OUN | Roger Mills | 31 min |
| Aug 28, 8:45 PM CDT | Areal Flood Advisory | OUN | Ellis, Roger Mills | 3 hr |
| Aug 28, 9:06 PM CDT | Special Weather Statement | OUN | Roger Mills | 24 min |
| Aug 28, 9:17 PM CDT | Flash Flood Warning | OUN | Ellis, Roger Mills | 5 hr |
| Aug 28, 10:09 PM CDT | Special Weather Statement | OUN | Ellis | 21 min |
| Aug 28, 10:18 PM CDT | Special Weather Statement | OUN | Roger Mills | 27 min |
| Aug 28, 10:41 PM CDT | Special Weather Statement | OUN | Greer | 34 min |
| Aug 28, 10:44 PM CDT | Special Weather Statement | OUN | Roger Mills | 31 min |
| Aug 28, 10:58 PM CDT | Special Weather Statement | OUN | Ellis | 32 min |
| Aug 28, 11:08 PM CDT | Special Weather Statement | OUN | Ellis | 37 min |
| Aug 29, 12:09 AM CDT | Special Weather Statement | OUN | Harper | 36 min |
| Aug 29, 12:21 AM CDT | Special Weather Statement | OUN | Beckham | 24 min |
| Aug 29, 1:05 AM CDT | Flash Flood Warning | OUN | Ellis | 3 hr |
| Aug 29, 1:45 AM CDT | Areal Flood Advisory | OUN | Beckham | 3 hr |
| Aug 29, 3:09 AM CDT | Areal Flood Warning | OUN | Ellis, Roger Mills | 3 hr |
| Aug 29, 3:59 AM CDT | Areal Flood Warning | OUN | Ellis | 3 hr |
| Aug 29, 7:35 AM CDT | Special Weather Statement | OUN | Blaine | 25 min |
| Aug 29, 6:11 PM CDT | Special Weather Statement | OUN | Hughes | 34 min |
| Aug 29, 6:40 PM CDT | Special Weather Statement | OUN | Hughes | 35 min |
| Aug 29, 6:55 PM CDT | Special Weather Statement | OUN | Hughes | 35 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2018Every severe thunderstorm warning in 2018
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.