Alert archive / Mississippi / Flash Flood Watches in 2017
Flash Flood Watch 14, NWS Jackson, MS
NWS Jackson, MS issued this flash flood watch at Aug 10, 2017, 2:42 AM CDT for 33 counties in Mississippi; 7 parishes in Louisiana; Ashley County, Chicot County, Arkansas. It took effect at Aug 10, 2017, 4:00 AM CDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Aug 10, 2017, 2:42 AM CDT (07:42 UTC)
- In effect from
- Aug 10, 2017, 4:00 AM CDT
- Expired
- Aug 10, 2017, 7:00 PM CDT
- In force
- 15 hr
- Issued by
- NWS Jackson, MS
- Flood severity
- None
All 42 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, Carroll County, MS, Claiborne County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones 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, 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, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 30 km from the middle of the area, began a volume at 07:43 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
Jackson, MS (KJAN), launched 00:00Z, 7.7 hours before the alert went out and 20 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
- 118 J/kg
- Mixed-layer CIN
- -172 J/kg
- Mixed-layer LCL
- 1071 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- -14 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 Aug 10, 12:54 AM CDT, 1 hour 48 minutes earlier.
Area forecast discussion, Aug 10, 12:54 AM CDT, 1 hour 48 minutes before
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</html>Hazardous weather outlook, Aug 9, 2:57 PM CDT, 11 hours 45 minutes before
Hazardous Weather Outlook National Weather Service Jackson MS 257 PM CDT Wed Aug 9 2017 ARZ074-075-LAZ007>009-015-016-023>026-MSZ034-035-040>042-047-048- 053>056-059>066-072>074-102000- Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Washington- Humphreys-Issaquena-Sharkey-Yazoo-Warren-Hinds-Claiborne-Copiah- Simpson-Smith-Jefferson-Adams-Franklin MS-Lincoln-Lawrence- Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest- 257 PM CDT Wed Aug 9 2017 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, northwest Mississippi, south central Mississippi, and west central Mississippi. .DAY ONE...Tonight and Thursday FLOODING THREAT...Elevated TIMING...Mainly Thursday Flash Flooding is expected over portions of the region on Thursday. Thunderstorms capable of 1 to 2 inches of rain in a short amount of time will move across the same areas that have received several inches of rain over the past several days. (www.weather.gov/images/jan/graphicast/image2.png) .DAYS TWO THROUGH SEVEN...Thursday night through Tuesday The probability for widespread hazardous weather is low. .SPOTTER CALL TO ACTION STATEMENT... The activation of storm spotters, HAM radio operators, and emergency management personnel in support of severe weather operations is not expected through next Tuesday. MSZ018-019-025>033-036>039-043>046-049>052-057-058-102000- Bolivar-Sunflower-Leflore-Grenada-Carroll-Montgomery-Webster-Clay- Lowndes-Choctaw-Oktibbeha-Holmes-Attala-Winston-Noxubee- Madison MS-Leake-Neshoba-Kemper-Rankin-Scott-Newton-Lauderdale- Jasper-Clarke- 257 PM CDT Wed Aug 9 2017 This hazardous weather outlook is for portions of central Mississippi, east central Mississippi, and north central Mississippi. .DAY ONE...Tonight and Thursday FLOODING THREAT...Limited TIMING...Tonight through Thursday Flash Flooding is possible over portions of the area tonight through Thursday. Thunderstorms capable of 1 to 2 inches of rain in a short amount of time will move across the same areas that have received several inches of rain over the past several days. (www.weather.gov/images/jan/graphicast/image*.png) .DAYS TWO THROUGH SEVEN...Thursday night through Tuesday The probability for widespread hazardous weather is low. .SPOTTER CALL TO ACTION STATEMENT... The activation of storm spotters, HAM radio operators, and emergency management personnel in support of severe weather operations is not expected through next Tuesday. 3 && ...HAZARD LEGEND... *FLOODING* Extreme...Confident in significant flooding. Significant...Significant flooding possible. Elevated...Confident in flooding. Limited...Flooding possible. ...USEFUL WEATHER WEB PAGES (URLS)... NWS JAN Home page... www.weather.gov/jan Stay Aware, Stay Safe NWS JAN Briefing Page... www.weather.gov/jan/safe Latest Weather Briefing... www.weather.gov/jan/weather_briefing Tropical page... www.weather.gov/jan/tropical National Hurricane Center Home Page... www.nhc.noaa.gov/ Find NWS JAN on Facebook... www.facebook.com/NWSJacksonMS Follow NWS JAN on Twitter... @NWSJacksonMS Follow NWS JAN on Youtube... www.youtube.com/user/NWSJacksonMiss ...ADDITIONAL URLS FOR FLOODING ISSUES... Current Watches and Warnings... www.weather.gov/jan/safe_HeavyRain Observed Precipitation Images... www.weather.gov/jan/precipmaps River Forecast Center... www.weather.gov/lmrfc/ Significant River Flood Outlook... www.wpc.ncep.noaa.gov/nationalfloodoutlook/index.html Day 1 through 3 Excessive Rainfall... www.wpc.ncep.noaa.gov/qpf/excess_rain.shtml Excessive Rainfall Discussion... www.wpc.ncep.noaa.gov/discussions/qpferd.html Day 1 through 7 QPF... www.wpc.ncep.noaa.gov/qpf/qpf2.shtml QPF Discussion... www.wpc.ncep.noaa.gov/discussions/qpfpfd.html
In the hours before
Local storm report, Aug 9, 8:47 PM CDT, 5 hours 55 minutes before
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</html>Local storm report, Aug 9, 8:50 PM CDT, 5 hours 52 minutes before
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</html>Local storm report, Aug 9, 9:00 PM CDT, 5 hours 42 minutes before
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</html>Local storm report, Aug 9, 9:05 PM CDT, 5 hours 37 minutes before
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</html>Local storm report, Aug 9, 10:35 PM CDT, 4 hours 7 minutes before
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</html>Local storm report, Aug 9, 10:37 PM CDT, 4 hours 5 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 |
|---|---|---|---|---|
| Aug 9, 7:17 PM CDT | Flash Flood Warning | JAN | Jones | 3 hr |
| Aug 10, 2:12 PM CDT | Flash Flood Warning | JAN | Forrest, Lamar | 3 hr |
| Aug 10, 2:49 PM CDT | Special Weather Statement | JAN | Simpson | 26 min |
| Aug 10, 2:52 PM CDT | Special Weather Statement | JAN | Scott | 23 min |
| Aug 10, 3:19 PM CDT | Special Weather Statement | JAN | Copiah | 26 min |
| Aug 10, 3:45 PM CDT | Special Weather Statement | JAN | Copiah | 30 min |
| Aug 10, 5:12 PM CDT | Areal Flood Warning | JAN | Forrest | 2 hr |
| Aug 10, 5:26 PM CDT | Special Weather Statement | JAN | Adams | 34 min |
| Aug 10, 5:32 PM CDT | Flash Flood Warning | JAN | Clarke | 3 hr |
| Aug 10, 5:58 PM CDT | Special Weather Statement | JAN | Adams | 32 min |
Nearby
Flash Flood Watches in Mississippi, 2017Flash Flood Watches in Louisiana, 2017Flash Flood Watches in Arkansas, 2017Every flash flood watch in 2017
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.