Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 62
NWS Storm Prediction Center Norman OK
445 PM CDT Sat Mar 27 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central Illinois
South-central to east-central Missouri
* Effective this Saturday afternoon and evening from 445 PM until
900 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Multiple supercells with large hail as the primary initial
hazard should consolidate into a broken squall line with the risk
for damaging wind gusts increasing this evening.
The severe thunderstorm watch area is approximately along and 55
statute miles east and west of a line from 70 miles northeast of
Alton IL to 5 miles east southeast of West Plains MO. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU2).
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 58...WW 59...WW 60...WW
61...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
25035.
...Grams
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW2
WW 62 SEVERE TSTM IL MO 272145Z - 280200Z
AXIS..55 STATUTE MILES EAST AND WEST OF LINE..
70NE ALN/ALTON IL/ - 5ESE UNO/WEST PLAINS MO/
..AVIATION COORDS.. 50NM E/W /14WSW AXC - 55NW ARG/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 25035.
LAT...LON 39618809 36729079 36729278 39619015
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU2.
Watch 62 Status Report Messages:
STATUS REPORT #4 ON WW 62
VALID 280120Z - 280240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S UNO TO
30 WSW FAM TO 25 SSW BLV TO 15 ENE BLV TO 40 NNW SLO TO 10 SSW
CMI.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 290
..KARSTENS..03/28/21
ATTN...WFO...LSX...ILX...SGF...
&&
STATUS REPORT FOR WS 62
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC005-023-027-029-035-041-045-049-051-121-139-157-173-189-
280240-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOND CLARK CLINTON
COLES CUMBERLAND DOUGLAS
EDGAR EFFINGHAM FAYETTE
MARION MOULTRIE RANDOLPH
SHELBY WASHINGTON
$$
MOC093-123-149-179-186-187-203-280240-
MO
. MISSOURI COUNTIES INCLUDED ARE
IRON MADISON OREGON
REYNOLDS STE. GENEVIEVE ST. FRANCOIS
SHANNON
$$
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.
$$
STATUS REPORT #3 ON WW 62
VALID 280025Z - 280140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WSW UNO
TO 40 SSE VIH TO 10 E STL TO 30 SSE SPI TO 20 WNW CMI.
..KARSTENS..03/28/21
ATTN...WFO...LSX...ILX...SGF...
&&
STATUS REPORT FOR WS 62
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC005-021-023-027-029-035-041-045-049-051-115-119-121-133-135-
139-157-163-173-189-280140-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOND CHRISTIAN CLARK
CLINTON COLES CUMBERLAND
DOUGLAS EDGAR EFFINGHAM
FAYETTE MACON MADISON
MARION MONROE MONTGOMERY
MOULTRIE RANDOLPH ST. CLAIR
SHELBY WASHINGTON
$$
MOC091-093-099-123-149-179-186-187-189-203-221-510-280140-
MO
. MISSOURI COUNTIES INCLUDED ARE
HOWELL IRON JEFFERSON
MADISON OREGON REYNOLDS
STE. GENEVIEVE ST. FRANCOIS ST. LOUIS
SHANNON WASHINGTON
MISSOURI INDEPENDENT CITIES INCLUDED ARE
ST. LOUIS CITY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 62
VALID 272340Z - 280040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 286
..KARSTENS..03/27/21
ATTN...WFO...LSX...ILX...SGF...
&&
STATUS REPORT FOR WS 62
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC005-013-021-027-049-051-061-083-115-117-119-121-133-135-137-
139-157-163-167-171-173-189-280040-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOND CALHOUN CHRISTIAN
CLINTON EFFINGHAM FAYETTE
GREENE JERSEY MACON
MACOUPIN MADISON MARION
MONROE MONTGOMERY MORGAN
MOULTRIE RANDOLPH ST. CLAIR
SANGAMON SCOTT SHELBY
WASHINGTON
$$
MOC055-065-067-071-091-093-099-113-123-149-179-183-186-187-189-
203-215-219-221-229-510-280040-
MO
. MISSOURI COUNTIES INCLUDED ARE
CRAWFORD DENT DOUGLAS
FRANKLIN HOWELL IRON
JEFFERSON LINCOLN MADISON
OREGON REYNOLDS ST. CHARLES
STE. GENEVIEVE ST. FRANCOIS ST. LOUIS
SHANNON TEXAS WARREN
WASHINGTON WRIGHT
MISSOURI INDEPENDENT CITIES INCLUDED ARE
ST. LOUIS CITY
$$
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.
$$
STATUS REPORT #1 ON WW 62
VALID 272235Z - 272340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KARSTENS..03/27/21
ATTN...WFO...LSX...ILX...SGF...
&&
STATUS REPORT FOR WS 62
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC005-013-021-027-049-051-061-083-115-117-119-121-133-135-137-
139-157-163-167-171-173-189-272340-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOND CALHOUN CHRISTIAN
CLINTON EFFINGHAM FAYETTE
GREENE JERSEY MACON
MACOUPIN MADISON MARION
MONROE MONTGOMERY MORGAN
MOULTRIE RANDOLPH ST. CLAIR
SANGAMON SCOTT SHELBY
WASHINGTON
$$
MOC055-065-067-071-091-093-099-113-123-149-179-183-186-187-189-
203-215-219-221-229-510-272340-
MO
. MISSOURI COUNTIES INCLUDED ARE
CRAWFORD DENT DOUGLAS
FRANKLIN HOWELL IRON
JEFFERSON LINCOLN MADISON
OREGON REYNOLDS ST. CHARLES
STE. GENEVIEVE ST. FRANCOIS ST. LOUIS
SHANNON TEXAS WARREN
WASHINGTON WRIGHT
MISSOURI INDEPENDENT CITIES INCLUDED ARE
ST. LOUIS CITY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (5%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
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.