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The expiration time in the watch graphic is amended if the watch is
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Watch Status Reports.
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 82
NWS Storm Prediction Center Norman OK
525 PM CDT Tue Apr 7 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Far east-central Iowa
Northern Illinois
Far northwest Indiana
Lake Michigan
* Effective this Tuesday afternoon and evening from 525 PM until
1100 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
Isolated damaging wind gusts to 65 mph possible
A tornado or two possible
SUMMARY...A couple supercells may evolve into an east-southeast
progressing cluster along a cold front from far eastern Iowa through
northern Illinois this evening. Large hail should be the primary
hazard.
The severe thunderstorm watch area is approximately along and 35
statute miles north and south of a line from 75 miles west of
Rockford IL to 15 miles north of Valparaiso IN. 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 81...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2.5 inches. Extreme turbulence and surface wind gusts to 55 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
28035.
...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 82 SEVERE TSTM IA IL IN LM 072225Z - 080400Z
AXIS..35 STATUTE MILES NORTH AND SOUTH OF LINE..
75W RFD/ROCKFORD IL/ - 15N VPZ/VALPARAISO IN/
..AVIATION COORDS.. 30NM N/S /14SSE DBQ - 31W GIJ/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..55 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 28035.
LAT...LON 42709057 42178700 41168700 41689057
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU2.
Watch 82 Status Report Messages:
STATUS REPORT #6 ON WW 82
VALID 080335Z - 080400Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NNW MLI
TO 5 NW MMO TO VPZ.
REMAINING VALID PORTION OF WW MAY BE ALLOWED TO EXPIRE AT 08/04Z.
..KERR..04/08/20
ATTN...WFO...DVN...LOT...
&&
STATUS REPORT FOR WS 82
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC089-127-080400-
IN
. INDIANA COUNTIES INCLUDED ARE
LAKE PORTER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #5 ON WW 82
VALID 080300Z - 080440Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..SQUITIERI..04/08/20
ATTN...WFO...DVN...LOT...
&&
STATUS REPORT FOR WS 82
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC089-127-080440-
IN
. INDIANA COUNTIES INCLUDED ARE
LAKE PORTER
$$
IAC115-139-183-080440-
IA
. IOWA COUNTIES INCLUDED ARE
LOUISA MUSCATINE WASHINGTON
$$
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.
$$
STATUS REPORT #4 ON WW 82
VALID 080240Z - 080340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNW MLI
TO 45 NNE MMO TO 25 N VPZ.
..SQUITIERI..04/08/20
ATTN...WFO...DVN...LOT...
&&
STATUS REPORT FOR WS 82
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC043-080340-
IL
. ILLINOIS COUNTIES INCLUDED ARE
DUPAGE
$$
INC089-127-080340-
IN
. INDIANA COUNTIES INCLUDED ARE
LAKE PORTER
$$
IAC115-139-183-080340-
IA
. IOWA COUNTIES INCLUDED ARE
LOUISA MUSCATINE WASHINGTON
$$
LMZ743-744-745-779-080340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CALUMET HARBOR IL TO GARY IN
GARY TO BURNS HARBOR IN
BURNS HARBOR TO MICHIGAN CITY IN
LAKE MICHIGAN FROM WILMETTE HARBOR TO MICHIGAN CITY IN 5NM
OFFSHORE TO MID LAKE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 82
VALID 080140Z - 080240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW MLI
TO 10 SE RFD TO 40 S RAC TO 35 SE RAC.
..SQUITIERI..04/08/20
ATTN...WFO...DVN...LOT...
&&
STATUS REPORT FOR WS 82
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC037-043-089-093-103-161-195-197-080240-
IL
. ILLINOIS COUNTIES INCLUDED ARE
DE KALB DUPAGE KANE
KENDALL LEE ROCK ISLAND
WHITESIDE WILL
$$
INC089-127-080240-
IN
. INDIANA COUNTIES INCLUDED ARE
LAKE PORTER
$$
IAC031-045-095-103-107-115-139-163-183-080240-
IA
. IOWA COUNTIES INCLUDED ARE
CEDAR CLINTON IOWA
JOHNSON KEOKUK LOUISA
MUSCATINE SCOTT WASHINGTON
$$
LMZ743-744-745-779-080240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CALUMET HARBOR IL TO GARY IN
GARY TO BURNS HARBOR IN
BURNS HARBOR TO MICHIGAN CITY IN
LAKE MICHIGAN FROM WILMETTE HARBOR TO MICHIGAN CITY IN 5NM
OFFSHORE TO MID LAKE
$$
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.
$$
STATUS REPORT #2 ON WW 82
VALID 080030Z - 080140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SSE DBQ
TO 20 W JVL.
..SQUITIERI..04/08/20
ATTN...WFO...DVN...LOT...
&&
STATUS REPORT FOR WS 82
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC007-015-031-037-043-089-093-097-103-111-141-161-177-195-197-
201-080140-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOONE CARROLL COOK
DE KALB DUPAGE KANE
KENDALL LAKE LEE
MCHENRY OGLE ROCK ISLAND
STEPHENSON WHITESIDE WILL
WINNEBAGO
$$
INC089-127-080140-
IN
. INDIANA COUNTIES INCLUDED ARE
LAKE PORTER
$$
IAC031-045-095-097-103-105-107-113-115-139-163-183-080140-
IA
. IOWA COUNTIES INCLUDED ARE
CEDAR CLINTON IOWA
JACKSON JOHNSON JONES
KEOKUK LINN LOUISA
MUSCATINE SCOTT WASHINGTON
$$
LMZ740-741-742-743-744-745-777-779-080140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
WINTHROP HARBOR TO WILMETTE HARBOR IL
WILMETTE HARBOR TO NORTHERLY ISLAND IL
NORTHERLY ISLAND TO CALUMET HARBOR IL
CALUMET HARBOR IL TO GARY IN
GARY TO BURNS HARBOR IN
BURNS HARBOR TO MICHIGAN CITY IN
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM
OFFSHORE TO MID LAKE
LAKE MICHIGAN FROM WILMETTE HARBOR TO MICHIGAN CITY IN 5NM
OFFSHORE TO MID LAKE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 82
VALID 072335Z - 080040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..04/07/20
ATTN...WFO...DVN...LOT...
&&
STATUS REPORT FOR WS 82
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC007-015-031-037-043-085-089-093-097-103-111-141-177-195-197-
201-080040-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOONE CARROLL COOK
DE KALB DUPAGE JO DAVIESS
KANE KENDALL LAKE
LEE MCHENRY OGLE
STEPHENSON WHITESIDE WILL
WINNEBAGO
$$
INC089-127-080040-
IN
. INDIANA COUNTIES INCLUDED ARE
LAKE PORTER
$$
IAC045-097-080040-
IA
. IOWA COUNTIES INCLUDED ARE
CLINTON JACKSON
$$
LMZ740-741-742-743-744-745-777-779-080040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
WINTHROP HARBOR TO WILMETTE HARBOR IL
WILMETTE HARBOR TO NORTHERLY ISLAND IL
NORTHERLY ISLAND TO CALUMET HARBOR IL
CALUMET HARBOR IL TO GARY IN
GARY TO BURNS HARBOR IN
BURNS HARBOR TO MICHIGAN CITY IN
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM
OFFSHORE TO MID LAKE
LAKE MICHIGAN FROM WILMETTE HARBOR TO MICHIGAN CITY IN 5NM
OFFSHORE TO MID LAKE
$$
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 (5%)
|
Wind
Probability of 10 or more severe wind events
|
Low (20%)
|
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.
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