Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 787, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Aug 20, 2019, 3:43 PM CDT for Ellis County, Harper County, Oklahoma. It was in force for 47 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 20, 2019, 3:43 PM CDT (20:43 UTC)
- Expired
- Aug 20, 2019, 4:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Ellis County, OK, Harper County, OK
The radar
The Dodge City radar (KDDC), 142 km from the middle of the area, began a volume at 20:47 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
Dodge City, (KDDC), launched 12:00Z, 8.7 hours before the alert went out and 142 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
- 922 J/kg
- Mixed-layer CIN
- -388 J/kg
- Mixed-layer LCL
- 2212 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 313 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 3:16 AM CDT | Heat Advisory | OUN | Atoka, Bryan, Canadian, Carter, Cleveland, Coal and 20 more | 41 hr |
| Aug 20, 2:45 PM CDT | Special Weather Statement | OUN | Harper | 45 min |
| Aug 20, 3:30 PM CDT | Special Weather Statement | OUN | Harper | 30 min |
| Aug 20, 3:33 PM CDT | Special Weather Statement | OUN | Harper | 27 min |
| Aug 20, 3:47 PM CDT | Severe Thunderstorm Warning | OUN | Harper, Woods | 43 min |
| Aug 20, 3:58 PM CDT | Special Weather Statement | OUN | Woodward | 47 min |
| Aug 20, 4:20 PM CDT | Special Weather Statement | OUN | Woodward | 25 min |
| Aug 20, 4:39 PM CDT | Special Weather Statement | OUN | Woods | 51 min |
| Aug 20, 4:48 PM CDT | Severe Thunderstorm Warning | OUN | Harper, Woods, Woodward | 42 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2019Every severe thunderstorm warning in 2019
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.