Alert archive / Mississippi / Flash Flood Warnings in 2012

Flash Flood Warning 4, NWS Jackson, MS

January 26, 2012Forrest County, Jones County, Lamar County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jan 26, 2012, 8:20 AM CST for Forrest County, Jones County, Lamar County, Mississippi. It was in force for 115 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jan 26, 2012, 8:20 AM CST (14:20 UTC)
Expired: Jan 26, 2012, 10:15 AM CST
In force: 115 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Forrest County, MS, Jones County, MS, Lamar County, MS

The radar

The Mobile radar (KMOB), 119 km from the middle of the area, began a volume at 14:20 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 was reported inside it

Time	Report	Where	Remark
Jan 26, 8:30 AM CST	FLASH FLOOD	Hattiesburg, MS	SEVERAL INTERSECTIONS IN AND NEAR HATTIESBURG HAD BECOME INUNDATED WITH WATER. ALSO THE INTERSECTIONS OF HIGHWAY 49 AND FORREST, HIGHWAY 49 AND MIMOSA AS WELL AS NEAR SHONEYS ON SOUTH 27TH STREET.
Jan 26, 9:31 AM CST	FLASH FLOOD	Laurel, MS	STREET FLOODING ON JEFFERSON...ELKSVILLE...JOE WHEELER..AND TERESA STREETS. WATER WAS ALSO COVERING PORTIONS OF I-59 FOR A SHORT PERIOD OF TIME.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 2.3 hours before the alert went out and 117 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1176 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 461 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 354 m²/s²
0-3 km storm-relative helicity: 359 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

170 
WGUS54 KJAN 261420
FFWJAN
MSC035-067-073-261615-
/O.NEW.KJAN.FF.W.0004.120126T1420Z-120126T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
820 AM CST THU JAN 26 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FORREST COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...PETAL...HATTIESBURG...
  JONES COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...LAUREL...ELLISVILLE...
  EASTERN LAMAR COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WEST HATTIESBURG...

* UNTIL 1015 AM CST

* AT 820 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN NEAR HATTIESBURG. THE
  STORMS WERE NEARLY STATIONARY. ESTIMATED RADAR RAINFALL AMOUNTS...
  ON THE ORDER OF TWO TO FOUR INCHES...HAVE OCCURRED IN THE PAST TWO
  HOURS.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MILL
  CREEK...TUCKERS CROSSING...MOSELLE...OVETT...EASTABUCHIE...
  MACEDONIA...RAWLS SPRINGS AND SANDERSVILLE

VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
TWO HOURS WITH AN ADDITIONAL ONE INCH POSSIBLE.

RAINFALL AMOUNTS FROM TWO TO FOUR INCHES IN A HOUR CAN CAUSE FLOODING
IN AND AROUND THE WESTERN PORTIONS OF HATTIESBURG IN NORTHEAST LAMAR
COUNTY. SOME OF THE ROADS THAT FLOOD WITH THIS AMOUNT OF RAINFALL
INCLUDE SAM RAYBURN ROAD...CLEARANCE RAY DRIVE...RUBY CIRCLE AND
RAYBURN PLACE. IN ADDITION TO MANY OTHER LOCATIONS ALONG MIXON CREEK
BEHIND TURTLE CREEK MALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF URBAN
AREAS...INCLUDING HIGHWAYS...STREETS AND UNDERPASSES...IN ADDITION TO
LOW LYING AND OTHER POOR DRAINAGE AREAS.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3100 8935 3100 8941 3097 8944 3097 8947
      3100 8951 3143 8949 3143 8940 3156 8940
      3181 8920 3182 8894 3144 8894 3143 8914
      3091 8913 3091 8934

$$

JA

1 follow-up statement

783 
WGUS74 KJAN 261525
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
925 AM CST THU JAN 26 2012

MSC035-067-073-261615-
/O.CON.KJAN.FF.W.0004.000000T0000Z-120126T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAMAR MS-JONES MS-FORREST MS-
925 AM CST THU JAN 26 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 AM CST FOR
FORREST...JONES AND EASTERN LAMAR COUNTIES...

AT 920 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED 
LIGHT TO MODERATE SHOWERS ACROSS FORREST..LAMAR...AND JONES COUNTIES 
WITH RAINFALL RATES LOWERING OVER THE PAST HOUR. HOWEVER...URBAN 
RAIN RUNOFF CONTINUES TO AFFECT PORTIONS OF HATTIESBURG AT THIS TIME 
WITH ESTIMATED RADAR RAINFALL AMOUNTS...ON THE ORDER OF TWO TO FOUR 
INCHES...HAVING OCCURRED OVER THE PAST TWO HOURS.

*SEVERAL INTERSECTIONS IN AND NEAR HATTIESBURG HAVE BECOME 
INUNDATED WITH WITH WATER PER EMERGENCY MANAGEMENT. THE INTERSECTION 
OF HIGHWAY 49 AND FORREST...HIGHWAY 49 AND MIMOSA AND NEAR SHONEYS  
ON SOUTH 27TH STREET. PLEASE TAKE EXTRA PRECAUTIONS WHILE TRAVELING*

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MACEDONIA...EASTABUCHIE...MOSELLE...OVETT...ELLISVILLE...TUCKERS
CROSSING...LAUREL...MILL CREEK AND SANDERSVILLE

VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
TWO HOURS. WITH AN ADDITIONAL ONE INCH POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF URBAN
AREAS...INCLUDING HIGHWAYS...STREETS AND UNDERPASSES. IN ADDITION
OTHER LOW LYING AND OTHER POOR DRAINAGE AREAS INCLUDING SEWERS...
DITCHES AND CULVERTS MAY ALSO OVERFLOW.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3100 8935 3100 8941 3097 8944 3097 8947
      3100 8951 3143 8949 3143 8940 3156 8940
      3181 8920 3182 8894 3144 8894 3143 8914
      3091 8913 3091 8934

$$

JA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 25, 6:11 PM CST	Tornado Warning	JAN	Lincoln	49 min
Jan 25, 6:15 PM CST	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Yazoo	25 min
Jan 25, 6:33 PM CST	Severe Thunderstorm Warning	JAN	Copiah, Lawrence, Simpson	42 min
Jan 25, 6:39 PM CST	Special Weather Statement	JAN	Claiborne, Franklin	31 min
Jan 25, 6:55 PM CST	Tornado Warning	JAN	Copiah, Simpson	33 min
Jan 25, 7:11 PM CST	Special Weather Statement	JAN	Hinds	44 min
Jan 25, 7:36 PM CST	Tornado Warning	JAN	Copiah, Lawrence, Simpson	37 min
Jan 25, 10:17 PM CST	Special Weather Statement	JAN	Clay, Kemper, Lowndes, Noxubee, Oktibbeha	58 min
Jan 25, 11:07 PM CST	Special Weather Statement	JAN	Lowndes	28 min
Jan 26, 1:26 AM CST	Special Weather Statement	JAN	Marion	29 min
Jan 26, 6:39 AM CST	Special Weather Statement	JAN	Lamar, Marion	31 min
Jan 26, 7:03 AM CST	Special Weather Statement	JAN	Lamar	27 min
Jan 26, 7:28 AM CST	Severe Thunderstorm Warning	JAN	Forrest, Jones, Lamar	47 min
Jan 26, 7:56 AM CST	Severe Thunderstorm Warning	JAN	Forrest	19 min
Jan 26, 8:09 AM CST	Severe Thunderstorm Warning	JAN	Jones	19 min
Jan 26, 8:11 AM CST	Special Weather Statement	JAN	Lauderdale	29 min
Jan 26, 8:36 AM CST	Special Weather Statement	JAN	Clarke, Lauderdale	49 min
Jan 26, 9:05 AM CST	Severe Thunderstorm Warning	JAN	Clarke	40 min
Jan 26, 3:38 PM CST	Flash Flood Watch	JAN	Lauderdale	3 hr
Jan 26, 4:48 PM CST	Special Weather Statement	JAN	Clay	32 min

Nearby

Flash Flood Warnings in Mississippi, 2012 Every flash flood warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.