Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 65
NWS Storm Prediction Center Norman OK
545 PM CDT Fri Mar 27 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Extreme southwest Illinois
Southeast Missouri
* Effective this Friday afternoon and evening from 545 PM until
900 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
SUMMARY...Long-lived elevated supercell with a history of
significant severe hail may persist into parts of southeast Missouri
this evening, before weakening.
The severe thunderstorm watch area is approximately along and 45
statute miles east and west of a line from 40 miles west southwest
of Cape Girardeau MO to 30 miles north northwest of Farmington MO.
For a complete depiction of the watch see the associated watch
outline update (WOUS64 KWNS WOU5).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 64...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2.5 inches. Extreme turbulence and surface wind gusts to 50 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
25055.
...Grams
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 65
NWS Storm Prediction Center Norman OK
545 PM CDT Fri Mar 27 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Extreme southwest Illinois
Southeast Missouri
* Effective this Friday afternoon and evening from 545 PM until
900 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
SUMMARY...Long-lived elevated supercell with a history of
significant severe hail may persist into parts of southeast Missouri
this evening, before weakening.
The severe thunderstorm watch area is approximately along and 45
statute miles east and west of a line from 40 miles west southwest
of Cape Girardeau MO to 30 miles north northwest of Farmington MO.
For a complete depiction of the watch see the associated watch
outline update (WOUS64 KWNS WOU5).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 64...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2.5 inches. Extreme turbulence and surface wind gusts to 50 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
25055.
...Grams
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 65 SEVERE TSTM IL MO 272245Z - 280200Z
AXIS..45 STATUTE MILES EAST AND WEST OF LINE..
40WSW CGI/CAPE GIRARDEAU MO/ - 30NNW FAM/FARMINGTON MO/
..AVIATION COORDS.. 40NM E/W /40S FAM - 36NNW FAM/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..50 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 25055.
LAT...LON 36999106 38169147 38168981 36998942
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 65 Status Report Messages:
STATUS REPORT #1 ON WW 65
VALID 280035Z - 280140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 NNW POF TO
45 SW STL.
..DEAN..03/28/20
ATTN...WFO...LSX...PAH...
&&
STATUS REPORT FOR WS 65
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC157-280140-
IL
. ILLINOIS COUNTIES INCLUDED ARE
RANDOLPH
$$
MOC017-031-093-123-157-186-187-221-223-280140-
MO
. MISSOURI COUNTIES INCLUDED ARE
BOLLINGER CAPE GIRARDEAU IRON
MADISON PERRY STE. GENEVIEVE
ST. FRANCOIS WASHINGTON WAYNE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Low (10%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (40%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (60%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
weather.gov 
@NWSSPC
