Tornado Warning 43, NWS New Orleans, LA

714 
WWUS54 KLIX 271259
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
759 AM CDT Mon Jul 27 2020

LAC057-089-271345-
/O.CON.KLIX.TO.W.0043.000000T0000Z-200727T1345Z/
St. Charles LA-Lafourche LA-
759 AM CDT Mon Jul 27 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 AM CDT FOR
SOUTHEASTERN ST. CHARLES AND EAST CENTRAL LAFOURCHE PARISHES...
    
At 758 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Larose, moving east at 10 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Larose around 810 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 2959 9047 2965 9049 2980 9026 2956 9019
TIME...MOT...LOC 1258Z 253DEG 10KT 2963 9043 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

CAB

324 
WWUS54 KLIX 271316
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
816 AM CDT Mon Jul 27 2020

LAC057-089-271326-
/O.CAN.KLIX.TO.W.0043.000000T0000Z-200727T1345Z/
St. Charles LA-Lafourche LA-
816 AM CDT Mon Jul 27 2020

...THE TORNADO WARNING FOR SOUTHEASTERN ST. CHARLES AND EAST CENTRAL
LAFOURCHE PARISHES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

LAT...LON 2959 9047 2965 9049 2980 9026 2956 9019
TIME...MOT...LOC 1315Z 245DEG 12KT 2966 9037 

$$

24/RR

Area Forecast Discussion
National Weather Service New Orleans LA
519 AM CDT Mon Jul 27 2020

.SHORT TERM...

Unsettled pattern will persist through at least Tuesday with PW
values continuing to be well over 2 inches as weak disturbances
rotate around Bermuda high in the northern Gulf. This along with
an upper level Low over central and western portions of LA will
bring increased lift and instability into the area with locally
heavy rainfall possible throughout the daytime hours today. The
heaviest rainfall is expected to occur during the morning and
afternoon hours with another day of drying conditions expected by
late afternoon and evening as atmosphere gets worked over with
little to no sunshine for recovery afterward. With that in
mind...temperatures will remain very pleasant again today with
highs only in the low to mid 80s. An expected repeat scenario
possible on Tuesday as little change in overall pattern expected.
Meanwhile...upper level trough will begin to drop into the western
Great Lakes beginning today. This will be the key to a break in
the current pattern. Upper level trough will move eastward towards
the northeastern USA by the middle and latter part of the week.
Upper level high pressure will expand and slowly drift westward
through the Gulf during the middle and latter part of the week
bringing a drying trend with conditions returning to more typical
summer conditions. Highs are expected to return to the lower 90s
by Thursday with increased sunshine and scattered afternoon and
evening thunderstorms.

.LONG TERM...
High pressure will remain in place over the central Gulf through
the end of the week. An upper level trough will drop out of
Canada near the upper Mississippi Valley and swing across the
Great Lakes region Wednesday, then shift east towards the
Atlantic. This will first push the upper ridge centered in the
western Atlantic southward. The CWA will be in an area of weakness
between that high pressure and another near the US Desert
Southwest. Towards the W/Th time frame, the far western side of
that Atlantic ridge will break off and become centered over the
eastern GOM. Depending on how strong that smaller ridge is will
determine home far it extends north and shields the local area
from rainfall. The current forecast does still contain chance POPs
as models haven't been particularly consistent with how much
subsidence develops locally. An unseasonably low latitude sharp
shortwave trough digs through the Arklatex and into the southern
Mississippi River Valley by the weekend. This will bring an
increased chance of thunderstorms into the area. A few storms
could be strong to severe over the weekend if this pattern hold
true.

&&

.AVIATION...
Heavy showers and isolated thunderstorms will continue to move
inland affecting all terminals by mid morning. A repeat of Sunday
will occur on Monday with prevailing light showers after 14z and
continuing through 23z. Winds have not been much of an impact but
IFR to LIFR ceilings can be expected as well as temporary
visibilities down to 1sm or less on Monday.

&&

.MARINE...
High pressure will remain over the eastern Gulf bringing a
continued onshore flow to the coastal waters through the period.
Winds will remain fairly light through the period with seas
remaining 3 feet or less through the remainder of the week.
Unsettled pattern to persist through the first half the week with
showers and thunderstorms...returning to more typical summer
weather pattern by late week with mainly nocturnal convection in
the offshore waters.

&&

.DECISION SUPPORT...

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  83  73  84  74 /  90  50  90  20
BTR  83  74  85  74 /  90  40  90  20
ASD  83  73  85  74 /  90  40  90  30
MSY  83  75  85  76 /  90  40  90  40
GPT  82  75  84  76 /  90  40  90  30
PQL  85  73  86  73 /  90  40  90  40

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...None.
GM...None.
MS...None.
GM...None.
&&

Special Weather Statement
National Weather Service New Orleans LA
550 AM CDT Mon Jul 27 2020

LAZ046-049-056-057-271115-
Iberville-Ascension-Assumption-St. James-
550 AM CDT Mon Jul 27 2020

...A STRONG THUNDERSTORM WILL AFFECT ASCENSION...NORTHWESTERN ST.
JAMES...EAST CENTRAL IBERVILLE AND NORTHEASTERN ASSUMPTION
PARISHES...

At 548 AM CDT, a strong thunderstorm was located near Sorrento, or
near Gonzales, moving north at 15 mph.

Winds in excess of 30 mph are possible with this storm.

This storm is exhibiting some rotation and watching closely to see
if a tornado warning is needed. However, this storm doesn't appear
to have much of a wind risk outside of the 30 mph already mentioned
thus why a severe thunderstorm warning is not out right now.

Locations impacted include...
Gonzales, Donaldsonville, St. Gabriel, Sorrento, Port Vincent,
Prairieville, Geismar and Carville.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3032 9117 3032 9114 3031 9112 3032 9110
      3032 9102 3033 9084 3006 9080 3004 9100
TIME...MOT...LOC 1048Z 174DEG 12KT 3014 9091

CAB

Special Weather Statement
National Weather Service New Orleans LA
624 AM CDT Mon Jul 27 2020

LAZ059-065>067-271200-
Lower Terrebonne-Upper Terrebonne-Lower Lafourche-Upper Lafourche-
624 AM CDT Mon Jul 27 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN TERREBONNE AND
NORTHWESTERN LAFOURCHE PARISHES...

At 623 AM CDT, a strong thunderstorm was located near Houma, moving
northeast at 10 mph.

Winds in excess of 30 mph are possible with this storm.

This storm is exhibiting some rotation and watching closely to see
if a tornado warning is needed. However, this storm doesn't appear
to have much of a wind risk outside of the 30 mph already mentioned
thus why a severe thunderstorm warning is not out right now.

Locations impacted include...
Houma, Gray, Bayou Cane, Schriever and Raceland.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 2939 9084 2950 9092 2978 9078 2956 9046
TIME...MOT...LOC 1123Z 231DEG 9KT 2950 9074

Special Weather Statement
National Weather Service New Orleans LA
640 AM CDT Mon Jul 27 2020

LAZ063-069-070-271215-
Lower Plaquemines-Lower St. Bernard-Upper Plaquemines-
640 AM CDT Mon Jul 27 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL ST. BERNARD AND
NORTHWESTERN PLAQUEMINES PARISHES...

At 639 AM CDT, a strong thunderstorm was located over Port Sulphur,
moving north at 10 mph.

Winds in excess of 30 mph are possible with this storm.

This storm is exhibiting some rotation and watching closely to see
if a tornado warning is needed. However, this storm doesn't appear
to have much of a wind risk outside of the 30 mph already mentioned
thus why a severe thunderstorm warning is not out right now.

Locations impacted include...
Port Sulphur, Pointe A La Hache and Empire.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 2945 8982 2979 8996 2977 8955 2972 8956
      2976 8958 2972 8960 2976 8963 2975 8965
      2972 8961 2971 8964 2971 8957 2969 8963
      2968 8958 2965 8958 2968 8966 2962 8963
      2961 8973 2949 8962 2943 8963
TIME...MOT...LOC 1139Z 187DEG 11KT 2953 8972

Special Weather Statement
National Weather Service New Orleans LA
700 AM CDT Mon Jul 27 2020

LAZ059-065-067-271300-
Upper Terrebonne-Lower Lafourche-Upper Lafourche-
700 AM CDT Mon Jul 27 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL LAFOURCHE
PARISH...

At 659 AM CDT, a strong thunderstorm was located near Houma, moving
northeast at 15 mph.

Winds in excess of 30 mph are possible with this storm.

This storm had the tornado warning on it earlier but the rotation
has weakened some, however we are closely watching it to see if a
new tornado warning will be needed.

Locations impacted include...
Houma, Larose, Lockport, Mathews, Raceland and Des Allemands.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 2956 9058 2955 9066 2958 9068 2983 9055
      2956 9029 2954 9057
TIME...MOT...LOC 1159Z 236DEG 14KT 2957 9061

Special Weather Statement
National Weather Service New Orleans LA
722 AM CDT Mon Jul 27 2020

LAZ066-271315-
Lower Terrebonne-
722 AM CDT Mon Jul 27 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN TERREBONNE
PARISH...

At 721 AM CDT, a strong thunderstorm was located 13 miles west of
Cocodrie, or 26 miles southwest of Houma, moving east at 10 mph.

Winds in excess of 30 mph are possible with this storm.

This storm is exhibiting some rotation and watching closely to see
if a tornado warning is needed. However, this storm doesn't appear
to have much of a wind risk outside of the 30 mph already mentioned
thus why a severe thunderstorm warning is not out right now.

Locations impacted include...
Dulac, Chauvin, Cocodrie, Tambour Bay Buoy and Lumcon Center Buoy.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 2920 9097 2922 9097 2920 9089 2923 9087
      2924 9088 2921 9084 2923 9083 2926 9090
      2924 9097 2927 9097 2927 9094 2930 9093
      2947 9059 2921 9057 2923 9058 2925 9061
      2921 9059 2922 9064 2915 9065
TIME...MOT...LOC 1221Z 261DEG 8KT 2924 9089