Alert archive / Mississippi / Flash Flood Warnings in 2011

Flash Flood Warning 87, NWS Jackson, MS

May 25, 2011Grenada County, Mississippi

NWS Jackson, MS issued this flash flood warning at May 25, 2011, 10:02 PM CDT for Grenada County, Mississippi. It was in force for 79 min. 1 report 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: May 25, 2011, 10:02 PM CDT (03:02 UTC)
Expired: May 25, 2011, 11:21 PM CDT
In force: 79 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

County Grenada County, MS

The radar

The Columbus AFB radar (KGWX), 143 km from the middle of the area, began a volume at 03:02 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 was reported inside it

Time	Report	Where	Remark
May 25, 10:20 PM CDT	FLASH FLOOD	Grenada, MS	SEVERAL RDS WERE UNDER WATER FOR A BRIEF PERIOD...WATER HAS RECEDED.

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

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 3.0 hours before the alert went out and 112 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: 2 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 2470 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

729 
WGUS54 KJAN 260302
FFWJAN
MSC043-260500-
/O.NEW.KJAN.FF.W.0087.110526T0302Z-110526T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1002 PM CDT WED MAY 25 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GRENADA COUNTY IN NORTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF GRENADA...

* UNTIL MIDNIGHT CDT

* AT 1002 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN ALONG A LINE EXTENDING FROM
  GRENADA TO LEFLORE...OR ALONG A LINE EXTENDING FROM GRENADA TO 15
  MILES NORTHEAST OF GREENWOOD...MOVING EAST AT 35 MPH. ESTIMATED
  RADAR RAINFALL AMOUNTS...ON THE ORDER OF AN INCH...HAVE OCCURRED IN
  THE PAST HOUR.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ELLIOTT...GORE SPRINGS AND MISTERTON

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

RAINFALL AMOUNTS FROM ONE TO THREE INCHES A HOUR CAN CAUSE FLOODING
ON ROADS IN AND AROUND THE CITY OF GRENADA...INCLUDING MONROE STREET
AT FAIRGROUND ROAD...VAN DORN BETWEEN COMMERCE AND POPLAR STREETS...
MOUND STREET AT JEFFERSON STREET...PEARL AT LYNCH STREET AND COUNTRY
CLUB ROAD JUST SOUTH OF EAST MONROE STREET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3388 8977 3387 8950 3368 8951 3368 9013
      3380 9013 3381 9012 3381 8999 3382 8998
      3382 8993 3390 8992 3390 8977

$$

CME

1 follow-up statement

559 
WGUS74 KJAN 260421
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1121 PM CDT WED MAY 25 2011

MSC043-260431-
/O.CAN.KJAN.FF.W.0087.000000T0000Z-110526T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GRENADA MS-
1121 PM CDT WED MAY 25 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR GRENADA COUNTY...

THE HEAVY RAIN WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
COUNTY.

LAT...LON 3388 8977 3387 8950 3368 8951 3368 9013
      3380 9013 3381 9012 3381 8999 3382 8998
      3382 8993 3390 8992 3390 8977

$$

CME

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 7:06 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar	54 min
May 25, 7:14 PM CDT	Tornado Warning	JAN	Bolivar	61 min
May 25, 7:38 PM CDT	Tornado Warning	JAN	Bolivar, Sunflower	52 min
May 25, 8:14 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Washington	61 min
May 25, 8:29 PM CDT	Tornado Warning	JAN	Bolivar, Sunflower	28 min
May 25, 8:45 PM CDT	Severe Thunderstorm Warning	JAN	Leflore, Sunflower	60 min
May 25, 8:55 PM CDT	Tornado Warning	JAN	Washington	51 min
May 25, 9:00 PM CDT	Tornado Warning	JAN	Bolivar, Sunflower	32 min
May 25, 9:07 PM CDT	Severe Thunderstorm Warning	JAN	Grenada	53 min
May 25, 9:27 PM CDT	Flash Flood Warning	JAN	Bolivar, Sunflower, Washington	60 min
May 25, 9:36 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore, Montgomery, Sunflower	54 min
May 25, 9:45 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Washington	21 min
May 25, 9:52 PM CDT	Tornado Warning	JAN	Holmes, Humphreys, Leflore, Sunflower	23 min
May 25, 9:53 PM CDT	Severe Thunderstorm Warning	JAN	Sharkey, Washington	22 min
May 25, 10:09 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Choctaw, Clay, Montgomery, Oktibbeha, Webster	66 min
May 25, 10:18 PM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Leflore, Sunflower	42 min
May 25, 10:21 PM CDT	Tornado Warning	JAN	Carroll	24 min
May 25, 11:26 PM CDT	Special Weather Statement	JAN	Clay, Lowndes, Noxubee, Oktibbeha	59 min
May 26, 12:32 AM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Montgomery	43 min
May 26, 12:37 AM CDT	Special Weather Statement	JAN	Oktibbeha	18 min
May 26, 12:56 AM CDT	Special Weather Statement	JAN	Lowndes, Oktibbeha	29 min
May 26, 1:44 AM CDT	Special Weather Statement	JAN	Leflore	31 min
May 26, 2:01 AM CDT	Special Weather Statement	JAN	Lowndes	34 min
May 26, 2:19 AM CDT	Special Weather Statement	JAN	Lowndes	31 min
May 26, 2:46 AM CDT	Special Weather Statement	JAN	Grenada	29 min
May 26, 4:29 AM CDT	Special Weather Statement	JAN	Forrest, Lamar	41 min
May 26, 11:45 AM CDT	Special Weather Statement	JAN	Lamar	60 min
May 26, 11:50 AM CDT	Special Weather Statement	JAN	Jones	45 min
May 26, 12:01 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	32 min
May 26, 12:08 PM CDT	Special Weather Statement	JAN	Simpson, Smith	32 min
May 26, 12:32 PM CDT	Special Weather Statement	JAN	Jones	28 min
May 26, 12:55 PM CDT	Special Weather Statement	JAN	Forrest, Lamar	60 min
May 26, 1:13 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar, Marion	47 min
May 26, 1:18 PM CDT	Tornado Warning	JAN	Forrest, Lamar	46 min
May 26, 1:50 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	40 min
May 26, 1:54 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	51 min
May 26, 2:01 PM CDT	Special Weather Statement	JAN	Jones	59 min
May 26, 2:07 PM CDT	Special Weather Statement	JAN	Lamar	28 min
May 26, 2:15 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	45 min
May 26, 2:34 PM CDT	Special Weather Statement	JAN	Forrest, Lamar, Marion	61 min
May 26, 3:47 PM CDT	Special Weather Statement	JAN	Kemper	28 min
May 26, 4:21 PM CDT	Special Weather Statement	JAN	Lamar	44 min
May 26, 4:31 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	44 min
May 26, 6:17 PM CDT	Special Weather Statement	JAN	Forrest	43 min
May 26, 6:31 PM CDT	Special Weather Statement	JAN	Jones	29 min

Nearby

Flash Flood Warnings in Mississippi, 2011 Every flash flood warning in 2011

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.