Alert archive / Oklahoma / Flash Flood Watches in 2009
Flash Flood Watch 8, NWS Tulsa, OK
NWS Tulsa, OK issued this flash flood watch at May 15, 2009, 12:19 PM CDT for 16 counties in Oklahoma. It took effect at May 15, 2009, 7:00 PM CDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- May 15, 2009, 12:19 PM CDT (17:19 UTC)
- In effect from
- May 15, 2009, 7:00 PM CDT
- Expired
- May 15, 2009, 10:59 PM CDT
- In force
- 4 hr
- Issued by
- NWS Tulsa, OK
- Flood severity
- None
Counties Adair County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Mayes County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Pawnee County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 2 km from the middle of the area, began a volume at 17:16 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, 5.3 hours before the alert went out and 176 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
- 232 J/kg
- Mixed-layer CIN
- -284 J/kg
- Mixed-layer LCL
- 1052 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 224 m²/s²
- 0-3 km storm-relative helicity
- 316 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
What forecasters said that day
The local office's own words before this flash flood watch 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 flash flood watch went out at May 15, 11:20 AM CDT, 59 minutes earlier.
Area forecast discussion, May 15, 11:20 AM CDT, 59 minutes before
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</html>Hazardous weather outlook, May 15, 4:58 AM CDT, 7 hours 21 minutes before
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Flash Flood Watches in Oklahoma, 2009Every flash flood watch in 2009
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.