Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 566
NWS Storm Prediction Center Norman OK
600 PM CST Wed Dec 15 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest Arkansas
West Central Illinois
Southeast Kansas
Central and Southwest Missouri
Northeast Oklahoma
* Effective this Wednesday night from 600 PM until Midnight CST.
* Primary threats include...
Scattered damaging winds likely with isolated significant gusts
to 75 mph possible
Isolated large hail events to 1 inch in diameter possible
A tornado or two possible
SUMMARY...A line of thunderstorms over eastern Kansas will track
eastward across the watch area this evening. The strongest cores
along the line will pose a risk of locally damaging wind gusts.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 40 miles north northwest
of Quincy IL to 40 miles southwest of Grove OK. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).
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 563...WW 564...WW 565...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 65 knots. A few
cumulonimbi with maximum tops to 500. Mean storm motion vector
24040.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW6
WW 566 SEVERE TSTM AR IL KS MO OK 160000Z - 160600Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
40NNW UIN/QUINCY IL/ - 40SW GMJ/GROVE OK/
..AVIATION COORDS.. 60NM E/W /39NNW UIN - 26E TUL/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..65 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24040.
LAT...LON 40489016 36189399 36189650 40489282
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.
Watch 566 Status Report Messages:
STATUS REPORT #2 ON WW 566
VALID 160355Z - 160440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 WSW BVO
TO 30 WNW SGF TO 30 SW JEF TO 10 SSW UIN TO 15 SE BRL.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2039
..SQUITIERI..12/16/21
ATTN...WFO...TSA...LSX...ILX...SGF...EAX...
&&
STATUS REPORT FOR WS 566
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC007-160440-
AR
. ARKANSAS COUNTIES INCLUDED ARE
BENTON
$$
ILC001-009-017-057-095-137-149-169-171-160440-
IL
. ILLINOIS COUNTIES INCLUDED ARE
ADAMS BROWN CASS
FULTON KNOX MORGAN
PIKE SCHUYLER SCOTT
$$
KSC021-160440-
KS
. KANSAS COUNTIES INCLUDED ARE
CHEROKEE
$$
MOC009-027-029-043-057-059-077-097-105-109-119-125-131-139-145-
151-163-167-169-173-209-213-225-160440-
MO
. MISSOURI COUNTIES INCLUDED ARE
BARRY CALLAWAY CAMDEN
CHRISTIAN DADE DALLAS
GREENE JASPER LACLEDE
LAWRENCE MCDONALD MARIES
MILLER MONTGOMERY NEWTON
OSAGE PIKE POLK
PULASKI RALLS STONE
TANEY WEBSTER
$$
OKC035-037-041-097-105-115-131-143-147-160440-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
CRAIG CREEK DELAWARE
MAYES NOWATA OTTAWA
ROGERS TULSA WASHINGTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 566
VALID 160250Z - 160340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNE BVO
TO 35 SE SZL TO 30 WSW BRL.
..SQUITIERI..12/16/21
ATTN...WFO...TSA...LSX...ILX...SGF...EAX...
&&
STATUS REPORT FOR WS 566
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC007-160340-
AR
. ARKANSAS COUNTIES INCLUDED ARE
BENTON
$$
ILC001-009-017-057-095-137-149-169-171-160340-
IL
. ILLINOIS COUNTIES INCLUDED ARE
ADAMS BROWN CASS
FULTON KNOX MORGAN
PIKE SCHUYLER SCOTT
$$
KSC021-160340-
KS
. KANSAS COUNTIES INCLUDED ARE
CHEROKEE
$$
MOC007-009-011-019-027-029-039-043-051-057-059-077-085-097-105-
109-111-119-125-127-131-135-137-139-141-145-151-163-167-169-173-
185-205-209-213-225-160340-
MO
. MISSOURI COUNTIES INCLUDED ARE
AUDRAIN BARRY BARTON
BOONE CALLAWAY CAMDEN
CEDAR CHRISTIAN COLE
DADE DALLAS GREENE
HICKORY JASPER LACLEDE
LAWRENCE LEWIS MCDONALD
MARIES MARION MILLER
MONITEAU MONROE MONTGOMERY
MORGAN NEWTON OSAGE
PIKE POLK PULASKI
RALLS ST. CLAIR SHELBY
STONE TANEY WEBSTER
$$
OKC035-037-041-097-105-113-115-117-131-143-147-160340-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
CRAIG CREEK DELAWARE
MAYES NOWATA OSAGE
OTTAWA PAWNEE ROGERS
TULSA WASHINGTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
High (70%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (<5%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (90%)
|
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.