Tornado Watch 540

Issued

Oct 27, 2021, 7:55 AM CDT (12:55 UTC)

Expired

Oct 27, 2021, 5:00 PM CDT

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

60 kt

The Lake Charles radar (KLCH), 33 km from the middle of the area, began a volume at 12:57 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.

Two or more tornadoes

70%

One or more EF2 to EF5 tornadoes

50%

Ten or more severe wind reports

80%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

5%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1910 Severe thunderstorm watch 539Oct 27, 5:13 AM CDT
• Mesoscale Discussion 1911 Severe potential...watch likelyOct 27, 7:36 AM CDT
• Mesoscale Discussion 1912 Tornado watch 540Oct 27, 9:08 AM CDT
• Mesoscale Discussion 1914 Tornado watch 540Oct 27, 10:59 AM CDT
• Mesoscale Discussion 1915 Tornado watch 540Oct 27, 12:50 PM CDT
• Mesoscale Discussion 1917 Tornado watch 542Oct 27, 3:25 PM CDT

372 
WWUS20 KWNS 271253
SEL0  
SPC WW 271253
LAZ000-TXZ000-CWZ000-272100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 540
NWS Storm Prediction Center Norman OK
755 AM CDT Wed Oct 27 2021

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southern and central Louisiana
  Southeast Texas
  Coastal Waters

* Effective this Wednesday morning and afternoon from 755 AM
  until 400 PM CDT.

* Primary threats include...
  A few tornadoes likely with a couple intense tornadoes possible
  Widespread damaging wind gusts to 70 mph likely

SUMMARY...A line of storms will continue eastward initially across
east/southeast Texas this morning, with other storms increasing
ahead of it from far southeast Texas into southern/central Louisiana
this morning. Damaging winds will be a common concern with the
strongest storms, and the tornado potential is expected to increase
into late morning and afternoon. A couple of strong tornadoes are
possible, especially by late morning and early/mid-afternoon.

The tornado watch area is approximately along and 80 statute miles
north and south of a line from 30 miles north northeast of Lafayette
LA to 50 miles west of Houston TX. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU0).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 539...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1 inch. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 25025.

...Guyer

Tornado Watches in Texas, 2021Tornado Watches in Louisiana, 2021Every tornado watch in 2021

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.