Alert archive / Arkansas / Flash Flood Watches in 2008
Flash Flood Watch 2, NWS Memphis, TN
NWS Memphis, TN issued this flash flood watch at Mar 21, 2008, 2:39 PM CDT for 4 counties in Arkansas. It was in force for 6 days.
The area
The counties it named.
The facts
- Issued
- Mar 21, 2008, 2:39 PM CDT (19:39 UTC)
- Expired
- Mar 27, 2008, 9:00 AM CDT
- In force
- 6 days
- Issued by
- NWS Memphis, TN
- Flood severity
- None
Counties Clay County, AR, Lawrence County, AR, Phillips County, AR, Randolph County, AR
The radar
The Memphis radar (KNQA), 102 km from the middle of the area, began a volume at 19:36 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
Springfield, MO (KSGF), launched 12:00Z, 7.7 hours before the alert went out and 291 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2310 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 501 m²/s²
- 0-3 km storm-relative helicity
- 569 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 watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Memphis, TN wrote its last area forecast discussion before this flash flood watch went out at Mar 20, 3:33 PM CDT, 23 hours 6 minutes earlier.
Area forecast discussion, Mar 20, 3:33 PM CDT, 23 hours 6 minutes before
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</html>Hazardous weather outlook, Mar 20, 3:45 PM CDT, 22 hours 54 minutes before
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Flash Flood Watches in Arkansas, 2008Every flash flood watch in 2008
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.