Alert archive / Mississippi / Flash Flood Warnings in 1998

Flash Flood Warning 31, NWS Mobile, AL

April 28, 1998Wayne County, Mississippi

NWS Mobile, AL issued this flash flood warning at Apr 28, 1998, 7:47 AM CDT for Wayne County, Mississippi. It was in force for 118 min. 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 28, 1998, 7:47 AM CDT (12:47 UTC)
Expired
Apr 28, 1998, 9:45 AM CDT
In force
118 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Wayne County, MS

The radar

The Mobile radar (KMOB), 115 km from the middle of the area, began a volume at 12:51 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, 0.8 hours before the alert went out and 151 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-pSkew-T log-p diagram, Jackson, MS at 12:00Z on 1998-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 1998-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1096 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
300 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 281247
FFWMOB
MSC153-281445-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
747 AM CDT TUE APR 28 1998

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WAYNE COUNTY IN SOUTHEASTERN MISSISSIPPI

* UNTIL 945 AM CDT

* AT 740 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR AT MOBILE
  INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN OVER WAYNE COUNTY ...
  WHICH ARE MOVING EAST AT AROUND 10 MPH.

* LATEST RAINFALL ESTIMATES INDICATE THAT BETWEEN TWO AND FOUR
  INCHES OF RAIN HAS FALLEN WEST OF A WAYNESBORO TO HIWANNEE LINE SINCE
  500 AM. THIS WILL CAUSE FLOODING OF SMALL STREAMS AND POOR DRAINAGE
  AREAS IN THE NORTHERN HALFf OF THE COUNTY.

  DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 28, 6:21 AM CDTFlash Flood WarningMOBPerry, Stone119 min
Apr 28, 6:37 AM CDTSevere Thunderstorm WarningMOBPerry33 min
Apr 28, 6:55 AM CDTSevere Thunderstorm WarningMOBGeorge35 min
Apr 28, 8:27 AM CDTFlash Flood WarningMOBPerry, Stone3 hr
Apr 28, 9:46 AM CDTFlash Flood WarningMOBWayne109 min

Nearby

Flash Flood Warnings in Mississippi, 1998Every flash flood warning in 1998

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.