Alert archive / Mississippi / Flash Flood Watches in 2009
Flash Flood Watch 21, NWS Jackson, MS
NWS Jackson, MS issued this flash flood watch at Oct 12, 2009, 7:03 AM CDT for 18 counties in Mississippi; East Carroll Parish, Morehouse Parish, West Carroll Parish, Louisiana; Ashley County, Chicot County, Arkansas. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Oct 12, 2009, 7:03 AM CDT (12:03 UTC)
- Expired
- Oct 12, 2009, 4:00 PM CDT
- In force
- 9 hr
- Issued by
- NWS Jackson, MS
- Flood severity
- None
All 23 counties
Ashley County, AR, Chicot County, AR, East Carroll Parish, LA, Morehouse Parish, LA, West Carroll Parish, LA, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Leflore County, MS, Lowndes County, MS, Montgomery County, MS, Oktibbeha County, MS, Sharkey County, MS, Sunflower County, MS, Washington County, MS, Webster County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 113 km from the middle of the area, began a volume at 12:05 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, 0.1 hours before the alert went out and 106 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
- 2 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 448 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 215 m²/s²
- 0-3 km storm-relative helicity
- 301 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS64 KJAN 121203 FFAJAN URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE JACKSON MS 703 AM CDT MON OCT 12 2009 ...FLASH FLOOD WATCH ISSUED FOR NORTHEAST LOUISIANA...SOUTHEAST ARKANSAS AND NORTHWEST MISSISSIPPI TODAY... ARZ074-075-LAZ007>009-MSZ018-019-025>037-040>042-122015- /O.NEW.KJAN.FF.A.0021.091012T1203Z-091012T2100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-BOLIVAR- SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY-LOWNDES- CHOCTAW-OKTIBBEHA-WASHINGTON-HUMPHREYS-HOLMES-ATTALA-ISSAQUENA- SHARKEY-YAZOO- INCLUDING THE CITIES OF...CROSSETT...NORTH CROSSETT...HAMBURG... WEST CROSSETT...DERMOTT...LAKE VILLAGE...EUDORA...BASTROP... OAK GROVE...EPPS...LAKE PROVIDENCE...CLEVELAND...INDIANOLA... RULEVILLE...GREENWOOD...GRENADA...VAIDEN...NORTH CARROLLTON... CARROLLTON...WINONA...EUPORA...MABEN...MATHISTON...WEST POINT... COLUMBUS...ACKERMAN...WEIR...STARKVILLE...GREENVILLE...BELZONI... ISOLA...DURANT...TCHULA...LEXINGTON...PICKENS...GOODMAN... KOSCIUSKO...MAYERSVILLE...ROLLING FORK...ANGUILLA...YAZOO CITY 703 AM CDT MON OCT 12 2009 ...FLASH FLOOD WATCH IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF SOUTHEAST ARKANSAS... NORTHEAST LOUISIANA AND NORTHWEST MISSISSIPPI. * UNTIL 4 PM CDT THIS AFTERNOON * STRONG SOUTHERLY FLOW UP AND OVER A WARM FRONT WILL MAINTAIN WIDESPREAD RAINFALL ACROSS THE WATCH AREA...WHICH IS GENERALLY ALONG AND NORTH OF A LINE FROM BASTROP TO YAZOO CITY TO COLUMBUS. RAINFALL RATES IN THE WATCH AREA HAVE RANGED FROM ONE HALF TO ONE AND ONE HALF INCHES AN HOUR. PERSISTENT STEADY RAINFALL AT THIS RATE HAS CAUSED STREET FLOODING AT SEVERAL LOCATIONS. THIS WILL CONTINUE THROUGH THE MORNING HOURS AND MORE WIDESPREAD FLOODING WILL BE POSSIBLE GIVEN THE SATURATED CONDITIONS IN PLACE. RAINFALL ACCUMULATIONS OF 2 TO 3 INCHES CAN BE EXPECTED IN THE WATCH AREA BEFORE RAINFALL GRADUALLY DECREASES DURING THE AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ 03
1 follow-up statement
000 WGUS64 KJAN 122107 FFAJAN FLOOD WATCH NATIONAL WEATHER SERVICE JACKSON MS 407 PM CDT MON OCT 12 2009 ...FLASH FLOOD WATCH HAS EXPIRED... ARZ074-075-LAZ007>009-MSZ018-019-025>037-040>042-122215- /O.EXP.KJAN.FF.A.0021.000000T0000Z-091012T2100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-BOLIVAR- SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY-LOWNDES- CHOCTAW-OKTIBBEHA-WASHINGTON-HUMPHREYS-HOLMES-ATTALA-ISSAQUENA- SHARKEY-YAZOO- INCLUDING THE CITIES OF...CROSSETT...NORTH CROSSETT...HAMBURG... WEST CROSSETT...DERMOTT...LAKE VILLAGE...EUDORA...BASTROP... OAK GROVE...EPPS...LAKE PROVIDENCE...CLEVELAND...INDIANOLA... RULEVILLE...GREENWOOD...GRENADA...VAIDEN...NORTH CARROLLTON... CARROLLTON...WINONA...EUPORA...MABEN...MATHISTON...WEST POINT... COLUMBUS...ACKERMAN...WEIR...STARKVILLE...GREENVILLE...BELZONI... ISOLA...DURANT...TCHULA...LEXINGTON...PICKENS...GOODMAN... KOSCIUSKO...MAYERSVILLE...ROLLING FORK...ANGUILLA...YAZOO CITY 407 PM CDT MON OCT 12 2009 ...FLASH FLOOD WATCH HAS EXPIRED... THE FLASH FLOOD WATCH FOR PORTIONS OF SOUTHEAST ARKANSAS... NORTHEAST LOUISIANA AND MISSISSIPPI HAS EXPIRED. LIGHT TO MODERATE RAIN OVER THE AREA WILL GRADUALLY TAPER OFF FROM THE NORTHWEST THIS EVENING. $$ 22
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 8:24 AM CDT | Flash Flood Warning | JAN | Washington | 7 hr |
| Oct 12, 9:03 AM CDT | River Flood Warning | JAN | Neshoba | 7 days |
| Oct 12, 9:29 AM CDT | Flash Flood Warning | JAN | Bolivar, Issaquena, Washington | 5 hr |
| Oct 12, 9:43 AM CDT | Flash Flood Warning | JAN | Bolivar, Leflore, Sunflower | 3 hr |
| Oct 12, 10:18 AM CDT | River Flood Warning | JAN | Clay | 5 days |
| Oct 12, 10:18 AM CDT | River Flood Warning | JAN | Noxubee | 7 days |
| Oct 12, 10:29 AM CDT | Flash Flood Warning | JAN | Carroll, Grenada, Montgomery | 3 hr |
| Oct 12, 11:03 AM CDT | Flash Flood Warning | JAN | Morehouse | 5 hr |
| Oct 12, 7:25 AM CDT | Flash Flood Warning | JAN | Chicot | 2 hr |
Nearby
Flash Flood Watches in Mississippi, 2009Flash Flood Watches in Louisiana, 2009Flash Flood Watches in Arkansas, 2009Every flash flood watch in 2009
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.