Alert archive / Mississippi / Flash Flood Watches in 2017
Flash Flood Watch 10, NWS Jackson, MS
NWS Jackson, MS issued this flash flood watch at Jul 24, 2017, 11:22 AM CDT for 10 counties in Mississippi. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jul 24, 2017, 11:22 AM CDT (16:22 UTC)
- Expired
- Jul 24, 2017, 7:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Jackson, MS
- Flood severity
- None
Counties Copiah County, MS, Covington County, MS, Forrest County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Simpson County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 85 km from the middle of the area, began a volume at 16:23 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 12:00Z, 4.4 hours before the alert went out and 91 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
- 279 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 794 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 35 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 Jul 24, 10:22 AM CDT, 1 hour earlier.
Area forecast discussion, Jul 24, 10:22 AM CDT, 1 hour before
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</html>Hazardous weather outlook, Jul 24, 4:27 AM CDT, 6 hours 55 minutes before
Hazardous Weather Outlook National Weather Service Jackson MS 427 AM CDT Mon Jul 24 2017 ARZ074-075-MSZ018-019-025>039-250930- Ashley-Chicot-Bolivar-Sunflower-Leflore-Grenada-Carroll- Montgomery-Webster-Clay-Lowndes-Choctaw-Oktibbeha-Washington- Humphreys-Holmes-Attala-Winston-Noxubee- 427 AM CDT Mon Jul 24 2017 This hazardous weather outlook is for extreme southeastern Arkansas and much of north central Mississippi. .DAY ONE...Today and Tonight The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Heat stress concerns will trend upwards again Wednesday through Friday, especially along and west of the Interstate 55 corridor. Heat advisories may eventually be needed, particularly in portions of the Arklamiss Delta. (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 is not expected through next Sunday. LAZ007>009-015-016-023>026-MSZ040>066-072>074-250930- Morehouse-West Carroll-East Carroll-Richland-Madison LA- Franklin LA-Catahoula-Tensas-Concordia-Issaquena-Sharkey-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- 427 AM CDT Mon Jul 24 2017 This hazardous weather outlook is for northeastern Louisiana and much of central and southern Mississippi. .DAY ONE...Today and Tonight FLOODING THREAT...Limited TIMING...Today Slow moving thunderstorms with torrential rainfall will lead to locally higher amounts of rainfall. Flash flooding is possible, especially in areas that have seen heavy rain the last few days and where storms train over the same location. (www.weather.gov/images/jan/graphicast/image1.png) .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Heat stress concerns will trend upwards again Wednesday through Friday, especially along and west of the Interstate 55 corridor. Heat advisories may eventually be needed, particularly in portions of the Arklamiss Delta. (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 is not expected through next Sunday. 50 && ...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
Special weather statement, Jul 24, 6:26 AM CDT, 4 hours 56 minutes before
Special Weather Statement
National Weather Service Jackson MS
626 AM CDT MON JUL 24 2017
MSZ072>074-241230-
Lamar MS-Marion MS-Forrest MS-
626 AM CDT MON JUL 24 2017
...THUNDERSTORMS PRODUCING HEAVY RAIN OVER SOUTHERN
MARION...SOUTHERN FORREST...AND SOUTHERN LAMAR COUNTIES...
At 623 AM CDT, Meteorologists were tracking thunderstorms along a
line extending from near Dexter to 6 miles south of Rock Hill.
Movement was east at 30 mph.
Torrential rainfall is occurring with these storms, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Locations impacted include...
Kokomo, Sandy Hook, Purvis, Lumberton, Pinebur, Brooklyn, Maxie,
Pickwick, Rock Hill and Baxterville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3101 8935 3101 8942 3098 8943 3098 8947
3101 8950 3100 8983 3107 8984 3107 8992
3113 8994 3113 9001 3117 9001 3118 9003
3121 9003 3114 8914 3091 8914 3091 8934
TIME...MOT...LOC 1123Z 284DEG 26KT 3110 8992 3099 8931
19Local storm report, Jul 24, 8:11 AM CDT, 3 hours 11 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 |
|---|---|---|---|---|
| Jul 24, 6:26 AM CDT | Special Weather Statement | JAN | Lamar | 64 min |
| Jul 24, 7:14 AM CDT | Flash Flood Warning | JAN | Forrest | 3 hr |
| Jul 24, 10:42 AM CDT | Special Weather Statement | JAN | Copiah, Jefferson Davis, Lawrence, Lincoln | 63 min |
| Jul 24, 10:57 AM CDT | Flash Flood Warning | JAN | Forrest, Lamar | 3 hr |
| Jul 24, 11:01 AM CDT | Flash Flood Warning | JAN | Copiah, Lincoln | 3 hr |
| Jul 24, 12:20 PM CDT | Special Weather Statement | JAN | Rankin | 55 min |
| Jul 24, 12:35 PM CDT | Special Weather Statement | JAN | Jefferson Davis, Lawrence | 55 min |
| Jul 24, 12:52 PM CDT | Flash Flood Warning | JAN | Rankin | 98 min |
| Jul 24, 1:35 PM CDT | Special Weather Statement | JAN | Franklin, Lincoln | 55 min |
| Jul 24, 1:40 PM CDT | Special Weather Statement | JAN | Claiborne | 50 min |
| Jul 24, 1:57 PM CDT | Flash Flood Warning | JAN | Forrest, Lamar | 3 hr |
| Jul 24, 1:59 PM CDT | Areal Flood Warning | JAN | Lincoln | 3 hr |
| Jul 24, 2:31 PM CDT | Special Weather Statement | JAN | Marion | 44 min |
| Jul 24, 2:37 PM CDT | Special Weather Statement | JAN | Claiborne | 38 min |
| Jul 24, 3:58 PM CDT | Special Weather Statement | JAN | Yazoo | 32 min |
| Jul 24, 4:13 PM CDT | Special Weather Statement | JAN | Holmes | 32 min |
| Jul 24, 4:33 PM CDT | Special Weather Statement | JAN | Attala | 27 min |
| Jul 24, 4:37 PM CDT | Special Weather Statement | JAN | Attala | 23 min |
| Jul 24, 4:50 PM CDT | Special Weather Statement | JAN | Sharkey | 25 min |
| Jul 24, 4:53 PM CDT | Special Weather Statement | JAN | Holmes | 37 min |
| Jul 24, 4:58 PM CDT | Special Weather Statement | JAN | Sunflower | 32 min |
| Jul 24, 5:21 PM CDT | Flash Flood Warning | JAN | Attala, Holmes | 3 hr |
| Jul 24, 5:25 PM CDT | Special Weather Statement | JAN | Sharkey | 35 min |
| Jul 24, 5:36 PM CDT | Special Weather Statement | JAN | Leflore | 24 min |
| Jul 24, 5:45 PM CDT | Special Weather Statement | JAN | Noxubee | 30 min |
| Jul 24, 5:58 PM CDT | Special Weather Statement | JAN | Webster | 32 min |
| Jul 24, 6:19 PM CDT | Special Weather Statement | JAN | Oktibbeha | 26 min |
| Jul 24, 6:22 PM CDT | Severe Thunderstorm Warning | JAN | Oktibbeha | 24 min |
| Jul 24, 6:30 PM CDT | Special Weather Statement | JAN | Sharkey | 30 min |
| Jul 24, 5:49 PM CDT | Special Weather Statement | JAN | East Carroll | 26 min |
Nearby
Flash Flood Watches in Mississippi, 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.