Alert archive / Arkansas / Flash Flood Warnings in 2009
Flash Flood Warning 124, NWS Little Rock, AR
NWS Little Rock, AR issued this flash flood warning at Sep 17, 2009, 2:38 PM CDT for 4 counties in Arkansas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 17, 2009, 2:38 PM CDT (19:38 UTC)
- Expired
- Sep 17, 2009, 5:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cleveland County, AR, Grant County, AR, Jefferson County, AR, Lincoln County, AR
The radar
The Little Rock radar (KLZK), 83 km from the middle of the area, began a volume at 19:40 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
Little Rock, AR (KLZK), launched 12:00Z, 7.6 hours before the alert went out and 210 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
- 353 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 452 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Little Rock, AR wrote its last area forecast discussion before this flash flood warning went out at Sep 16, 6:45 PM CDT, 19 hours 53 minutes earlier.
Area forecast discussion, Sep 16, 6:45 PM CDT, 19 hours 53 minutes before
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</html>The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 3:45 AM CDT | Flash Flood Warning | LZK | Bradley, Calhoun, Ouachita | 60 min |
| Sep 17, 9:23 AM CDT | River Flood Warning | LZK | Calhoun, Ouachita | 7 days |
| Sep 17, 9:23 AM CDT | River Flood Warning | LZK | Bradley, Calhoun, Union | 13 days |
| Sep 17, 9:52 AM CDT | River Flood Warning | LZK | White, Woodruff | 12 days |
| Sep 17, 4:29 PM CDT | Flash Flood Warning | LZK | Bradley, Calhoun, Ouachita | 3 hr |
| Sep 17, 4:46 PM CDT | Flash Flood Warning | LZK | Calhoun, Ouachita | 3 hr |
Nearby
Flash Flood Warnings in Arkansas, 2009Every flash flood warning 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.