Alert archive / Mississippi / Flash Flood Watches in 2018

Flash Flood Watch 3, NWS Jackson, MS

March 27, 201821 counties in Mississippi; 9 parishes in Louisiana; Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this flash flood watch at Mar 27, 2018, 2:56 PM CDT for 21 counties in Mississippi; 9 parishes in Louisiana; Ashley County, Chicot County, Arkansas. It took effect at Mar 28, 2018, 1:00 PM CDT. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Mar 27, 2018, 2:56 PM CDT (19:56 UTC)
In effect from
Mar 28, 2018, 1:00 PM CDT
Expired
Mar 29, 2018, 1:00 PM CDT
In force
24 hr
Issued by
NWS Jackson, MS
Flood severity
None
All 32 counties

Ashley County, AR, Chicot County, AR, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Adams County, MS, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Leflore County, MS, Madison County, MS, Montgomery County, MS, Sharkey County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 92 km from the middle of the area, began a volume at 20:02 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.

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 Mar 27, 12:24 PM CDT, 2 hours 32 minutes earlier.

Area forecast discussion, Mar 27, 12:24 PM CDT, 2 hours 32 minutes before
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Hazardous weather outlook, Mar 27, 5:08 AM CDT, 9 hours 48 minutes before
Hazardous Weather Outlook
National Weather Service Jackson MS
508 AM CDT Tue Mar 27 2018

ARZ074-075-MSZ025>027-035-036-040-041-281015-
Ashley-Chicot-Leflore-Grenada-Carroll-Humphreys-Holmes-Issaquena-
Sharkey-
508 AM CDT Tue Mar 27 2018

This hazardous weather outlook is for portions of southeast
Arkansas, central Mississippi, north central Mississippi, and
west central Mississippi.

.DAY ONE...Today and Tonight

NON-THUNDERSTORM WINDS
THREAT...Limited
TIMING...Today

Southerly sustained winds of 20 mph with gusts to 30 mph are
expected today.

(https://www.weather.gov/images/jan/graphicast/image3.png)

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Multiple rounds of heavy rainfall are expected along and north of
the Natchez Trace Wednesday afternoon through Wednesday night,
before shifting south and east of the Natchez Trace Thursday.
Rainfall amounts from 2 to 4 inches with isolated higher amounts
are likely across the north and west with amounts from 1 to 3
inches likely across the south and east. Flash flooding and river
flooding will be possible during this timeframe, especially
northwest of the Natchez Trace corridor.

(https://www.weather.gov/images/jan/graphicast/image1.png)

In addition to flooding, severe storms capable of producing
damaging winds, hail and a couple tornadoes will be possible
Wednesday afternoon through Wednesday night mainly along and
northwest of the Natchez Trace corridor and then Thursday morning
through early afternoon for areas southeast of the Natchez Trace.
Continue to monitor the latest forecasts for updates on details
and timing.

(https://www.weather.gov/images/jan/graphicast/image2.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region Wednesday
through Wednesday night.

MSZ018-019-034-281015-
Bolivar-Sunflower-Washington-
508 AM CDT Tue Mar 27 2018

This hazardous weather outlook is for portions of northwest
Mississippi.

.DAY ONE...Today and Tonight

NON-THUNDERSTORM WINDS
THREAT...Elevated
TIMING...Today

Southerly sustained winds of 25 mph with gusts to 35 mph are
expected today. A wind advisory will be in effect for this areas
today through the afternoon.

(https://www.weather.gov/images/jan/graphicast/image3.png)

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Multiple rounds of heavy rainfall are expected along and north of
the Natchez Trace Wednesday afternoon through Wednesday night,
before shifting south and east of the Natchez Trace Thursday.
Rainfall amounts from 2 to 4 inches with isolated higher amounts
are likely across the north and west with amounts from 1 to 3
inches likely across the south and east. Flash flooding and river
flooding will be possible during this timeframe, especially
northwest of the Natchez Trace corridor.

(https://www.weather.gov/images/jan/graphicast/image1.png)

In addition to flooding, severe storms capable of producing
damaging winds, hail and a couple tornadoes will be possible
Wednesday afternoon through Wednesday night mainly along and
northwest of the Natchez Trace corridor and then Thursday morning
through early afternoon for areas southeast of the Natchez Trace.
Continue to monitor the latest forecasts for updates on details
and timing.

(https://www.weather.gov/images/jan/graphicast/image2.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region Wednesday
through Wednesday night.

LAZ007>009-015-016-023>026-MSZ028>033-037>039-042>066-072>074-
281015-
Morehouse-West Carroll-East Carroll-Richland-Madison LA-
Franklin LA-Catahoula-Tensas-Concordia-Montgomery-Webster-Clay-
Lowndes-Choctaw-Oktibbeha-Attala-Winston-Noxubee-Yazoo-Madison MS-
Leake-Neshoba-Kemper-Warren-Hinds-Rankin-Scott-Newton-Lauderdale-
Claiborne-Copiah-Simpson-Smith-Jasper-Clarke-Jefferson-Adams-
Franklin MS-Lincoln-Lawrence-Jefferson Davis-Covington-Jones-
Marion-Lamar-Forrest-
508 AM CDT Tue Mar 27 2018

This hazardous weather outlook is for portions of northeast
Louisiana, central Mississippi, north central Mississippi,
northeast Mississippi, and south central Mississippi.

.DAY ONE...Today and Tonight

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Multiple rounds of heavy rainfall are expected along and north of
the Natchez Trace Wednesday afternoon through Wednesday night,
before shifting south and east of the Natchez Trace Thursday.
Rainfall amounts from 2 to 4 inches with isolated higher amounts
are likely across the north and west with amounts from 1 to 3
inches likely across the south and east. Flash flooding and river
flooding will be possible during this timeframe, especially
northwest of the Natchez Trace corridor.

(https://www.weather.gov/images/jan/graphicast/image1.png)

In addition to flooding, severe storms capable of producing
damaging winds, hail and a couple tornadoes will be possible
Wednesday afternoon through Wednesday night mainly along and
northwest of the Natchez Trace corridor and then Thursday morning
through early afternoon for areas southeast of the Natchez Trace.
Continue to monitor the latest forecasts for updates on details
and timing.

(https://www.weather.gov/images/jan/graphicast/image2.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region Wednesday
through Thursday.

50

&&

...HAZARD LEGEND...

*NON-THUNDERSTORM WINDS*
Extreme...Sustained winds 50 mph or greater or wind gusts 65 mph
 or greater.
Significant...Sustained winds 40-49 mph or wind gusts 58-64 mph.
Elevated...Sustained winds 30-39 mph or wind gusts 45-57 mph.
Limited...Sustained winds 20-29 mph or wind gusts 30 to 44 mph.

...USEFUL WEATHER WEB PAGES (URLS)...

NWS JAN Home page...
   https://www.weather.gov/jan
Stay Aware, Stay Safe NWS JAN Briefing Page...
   https://www.weather.gov/jan/safe
Latest Weather Briefing...
   https://www.weather.gov/jan/weather_briefing

Find NWS JAN on Facebook...
   https://www.facebook.com/NWSJacksonMS
Follow NWS JAN on Twitter...
   @NWSJacksonMS
Follow NWS JAN on Youtube...
   https://www.youtube.com/user/NWSJacksonMiss

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 27, 3:33 AM CDTWind AdvisoryJANBolivar, Humphreys, Leflore, Sunflower, Washington13 hr
Mar 27, 11:00 AM CDTRiver Flood WarningJANCarroll, Leflore48 hr
Mar 27, 11:07 AM CDTRiver Flood WarningJANSharkey6 days
Mar 27, 11:26 AM CDTRiver Flood WarningJANAttala, Holmes8 days

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; radar from the NEXRAD Level II archive.