Alert archive / Texas / Flood Watches in 2017
Flood Watch 8, NWS Norman, OK
NWS Norman, OK issued this flood watch at Sep 25, 2017, 3:34 PM CDT for 5 counties in Oklahoma; 7 counties in Texas. It took effect at Sep 25, 2017, 7:00 PM CDT. It was in force for 45 hr.
The area
The counties it named.
The facts
- Issued
- Sep 25, 2017, 3:34 PM CDT (20:34 UTC)
- In effect from
- Sep 25, 2017, 7:00 PM CDT
- Expired
- Sep 27, 2017, 4:09 PM CDT
- In force
- 45 hr
- Issued by
- NWS Norman, OK
- Flood severity
- None
Counties Comanche County, OK, Cotton County, OK, Jackson County, OK, Kiowa County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 25 km from the middle of the area, began a volume at 20:36 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 8.6 hours before the alert went out and 265 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
- 890 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 664 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.4
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 7:48 AM CDT | Special Weather Statement | OUN | Major | 27 min |
| Sep 25, 2:43 PM CDT | Special Weather Statement | OUN | Grant | 32 min |
| Sep 25, 3:54 PM CDT | Special Weather Statement | OUN | Washita | 36 min |
| Sep 25, 4:58 PM CDT | Special Weather Statement | OUN | Custer, Dewey, Washita | 32 min |
Nearby
Flood Watches in Texas, 2017Flood Watches in Oklahoma, 2017Every flood watch in 2017
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.