Alert archive / Mississippi / Flash Flood Watches in 2018
Flash Flood Watch 6, NWS Jackson, MS
NWS Jackson, MS issued this flash flood watch at Sep 3, 2018, 4:18 AM CDT for 41 counties in Mississippi; 7 parishes in Louisiana; Ashley County, Chicot County, Arkansas. It took effect at Sep 4, 2018, 7:00 PM CDT. It was in force for 55 hr.
The area
The counties it named.
The facts
- Issued
- Sep 3, 2018, 4:18 AM CDT (09:18 UTC)
- In effect from
- Sep 4, 2018, 7:00 PM CDT
- Expired
- Sep 7, 2018, 2:00 AM CDT
- In force
- 55 hr
- Issued by
- NWS Jackson, MS
- Flood severity
- None
All 50 counties
Ashley County, AR, Chicot County, AR, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Leflore County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Winston County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 31 km from the middle of the area, began a volume at 09:18 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 9.3 hours before the alert went out and 254 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
- 816 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 747 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 112 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 Jackson, MS wrote its last area forecast discussion before this flash flood watch went out at Sep 3, 12:36 AM CDT, 3 hours 42 minutes earlier.
Area forecast discussion, Sep 3, 12:36 AM CDT, 3 hours 42 minutes before
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</html>The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 8:01 PM CDT | Special Weather Statement | JAN | Bolivar | 29 min |
| Sep 3, 4:56 PM CDT | Special Weather Statement | JAN | Hinds, Warren | 64 min |
| Sep 3, 5:23 PM CDT | Tropical Storm Warning | JAN | Forrest, Lamar, Marion | 33 hr |
Nearby
Flash Flood Watches in Mississippi, 2018Flash Flood Watches in Louisiana, 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.