Alert archive / Alabama / Tornado Warnings in 1997

Tornado Warning 26, NWS Mobile, AL

July 18, 1997Mobile County, Alabama

NWS Mobile, AL issued this tornado warning at Jul 18, 1997, 5:03 PM CDT for Mobile County, Alabama. It was in force for 42 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 18, 1997, 5:03 PM CDT (22:03 UTC)
Expired
Jul 18, 1997, 5:45 PM CDT
In force
42 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Mobile County, AL

The radar

The Mobile radar (KMOB), 4 km from the middle of the area, began a volume at 22:03 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

TimeReportWhereRemark
Jul 18, 5:10 PM CDTThunderstorm Wind 55Alabama Port, ALSeveral trees were blown down near Alabama Port.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 18, 9:00 AM CDTTornado WatchSPC12 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.1 hours before the alert went out and 152 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, Slidell Radar S, LA at 12:00Z on 1997-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 315 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, Slidell Radar S, LA at 12:00Z on 1997-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 square meters per square second.193958Sfc1 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
315 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
477 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
-3 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 182203 RRA
TORMOB
ALC097-182245-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
503 PM CDT FRI JUL 18 1997
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST ALABAMA
 
   ...MOBILE COUNTY
 
 
 
 
AT 459 PM...NWS DOPPLER WEATHER RADAR INDICATED A TORNADO IN THE
VICINITY OF ALABAMA PORT. THE TORNADO WAS MOVING NORTHWEST AT 40 MPH AND
WILL MOVE ACROSS SOUTHERN MOBILE COUNTY THROUGH 545 PM.
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Mobile, AL wrote its last area forecast discussion before this tornado warning went out at Jul 18, 2:46 PM CDT, 2 hours 17 minutes earlier.

Area forecast discussion, Jul 18, 2:46 PM CDT, 2 hours 17 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOBILE AL
245 PM CDT FRIN JUL 19 1997

NOT MUCH TIME FOR DISCUSSION AND NEEDLESS TO SAY...WITH LATEST
MOVEMENT TRENDS WITH DANNY AND LOOK AT ALL MODELS...SEEMS THAT
FA WL BE DEALING WITH +RA EVENT FOR NEXT CUPL DAYS.  UPPER FLOW
WL REMAIN WEAK OVR RGN THRU SUN MORNING...ALLOWING FOR DANNYS ENERGY
TO COMBINE WITH DEEP TROPICAL MOISTURE...THUS INCRG TORRENTIAL
RAINFALL THREAT TO NRN GULF COAST.  THEREFORE...WL KEEP QPF BASIN
AVGS HI...ESPECIALLY NEAR COAST WHERE RAIN BANDS WILL CONT. WL
SUGGEST A NEED TO CONT FFAS. ALTHO LATEST VWP SHOWS LTL IN THE WAY
OF SPEED SHEAR FOR TORNADIC SUPERCELLS...AS RAINBANDS APPROACH
LAND...FRICTIONAL INTERACTIONS WL KEEP THE POSSIBILITY OF TORNADOES
IN FCST AS WELL AS WELL AS SQUALLY WX.  TMPS WELL BLO SEASONAL NORMS
WITH CLDS AND RAIN.  FOR THE MOST PART DO NOT SUGGEST ANY MAJOR CHGS
TO FCST AS ALL LOOKS OK.

OVER THE OPEN GULF...HURRICANE WARNINGS WL CONT IN EFFECT THRU SAT
MORNING WITH DANNY EXPECTED TO MOVE ONLY AT A SNAILS PACE TO THE NE.

MOB 73/77/73/79 ++77  PNS 77/77/74/79 ++77
DTS 74/77/74/79 ++77  EVR 73/81/74/80 8877 10

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 1:57 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile48 min
Jul 18, 5:57 PM CDTTornado WarningMOBBaldwin63 min

Nearby

Tornado Warnings in Alabama, 1997Every tornado warning in 1997Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.