Alert archive / Mississippi / Flash Flood Watches in 2018
Flash Flood Watch 3, NWS Memphis, TN
NWS Memphis, TN issued this flash flood watch at Sep 4, 2018, 2:19 PM CDT for 6 counties in Mississippi; 6 counties in Arkansas. It took effect at Sep 5, 2018, 7:00 AM CDT. It was in force for 39 hr.
The area
The counties it named.
The facts
- Issued
- Sep 4, 2018, 2:19 PM CDT (19:19 UTC)
- In effect from
- Sep 5, 2018, 7:00 AM CDT
- Expired
- Sep 6, 2018, 9:54 PM CDT
- In force
- 39 hr
- Issued by
- NWS Memphis, TN
- Flood severity
- None
Counties Craighead County, AR, Cross County, AR, Lee County, AR, Phillips County, AR, Poinsett County, AR, St. Francis County, AR, Coahoma County, MS, Panola County, MS, Quitman County, MS, Tallahatchie County, MS, Tunica County, MS, Yalobusha County, MS
The radar
The Memphis radar (KNQA), 89 km from the middle of the area, began a volume at 19:20 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
Birmingham, AL (KBMX), launched 12:00Z, 7.3 hours before the alert went out and 379 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
- 179 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 947 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -97 m²/s²
- 0-3 km storm-relative helicity
- -75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.8
Nearby
Flash Flood Watches in Mississippi, 2018Flash Flood Watches in Arkansas, 2018Every flash flood watch in 2018
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.