Alert archive / Mississippi / Flash Flood Warnings in 1997

Flash Flood Warning 7, NWS New Orleans, LA

April 27, 1997Pike County, Walthall County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Apr 27, 1997, 10:04 AM CDT for Pike County, Walthall County, Mississippi. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 27, 1997, 10:04 AM CDT (15:04 UTC)
Expired: Apr 27, 1997, 2:00 PM CDT
In force: 4 hr
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Pike County, MS, Walthall County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.1 hours before the alert went out and 114 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: 172 J/kg
Mixed-layer CIN: -153 J/kg
Mixed-layer LCL: 624 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 462 m²/s²
0-3 km storm-relative helicity: 568 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 271509
FFWNEW
MSC113-147-271900-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1004 AM CDT SUN APR 27 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
FLASH FLOOD WARNING    EFFECTIVE UNTIL  200 PM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATIONS...
 
IN SOUTH MISSISSIPPI
 
   ...CENTRAL AND SOUTHERN PIKE COUNTY...WESTERN AND NORTHERN
      WALTHALL COUNTY...
 
NATIONAL WEATHER SERVICE DOPPLER RADAR ALONG WITH SURFACE OBSERVATIONS
INDICATED 3 TO 5 INCH RAINS HAVE FALLEN OVER SOUTH AND CENTRAL PORTIONS
OF PIKE COUNTY AND OVER WESTERN AND NORTHERN PORTIONS OF WALTHALL COUNTY
DURING THE PAST SEVERAL HOURS. SOME FLOODING HASS BEEN REDPORTED IN
THOSE AREAS WITH HIGH WATER IN SOME BUSINESSES AND OVER ROADWAYS.
ANOTHER BAND OF STRONG THUNDERSTORMS CONTAINING VERY HEAVY RAINFALL WILL
BE MOVING NORTHEAST OVER THESE SAME AREAS DURING THE ONE TO TWO HOURS
CAUSING ADDITIONAL FLOODING.
 
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
 
 
&

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 26, 11:40 PM CDT	Severe Thunderstorm Warning	LIX	Wilkinson	35 min
Apr 27, 2:08 AM CDT	Severe Thunderstorm Warning	LIX	Amite, Wilkinson	52 min
Apr 27, 3:09 AM CDT	Severe Thunderstorm Warning	LIX	Amite, Wilkinson	36 min
Apr 27, 3:43 AM CDT	Severe Thunderstorm Warning	LIX	Pike	32 min
Apr 27, 5:07 AM CDT	Flash Flood Warning	LIX	Pike	2 hr
Apr 27, 6:00 AM CDT	Severe Thunderstorm Warning	LIX	Walthall	15 min
Apr 27, 7:48 AM CDT	Flash Flood Warning	LIX	Pike	117 min
Apr 27, 11:35 AM CDT	Flash Flood Warning	LIX	Pike, Walthall	4 hr

Nearby

Flash Flood Warnings in Mississippi, 1997 Every flash flood warning in 1997

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.