Special Weather Statement, NWS St. Louis, MO

Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
640 AM CDT THU MAY 26 2016

.SHORT TERM...  (Through Late This Afternoon)
Issued at 216 AM CDT Thu May 26 2016

Convection a little closer than the previous two nights with a
broken line of showers and storms stretching from near KIRK to south
of Kansas City this morning. Most of the guidance shows this line
moving east-southeast into the CWA during the predawn hours and
reaching the STL Metro between 12-14Z.  Have chance/sct PoPs given
uncertainty in coverage and will NOWcast up until morning forecast
issuance.

This activity should steadily sink south into the eastern Ozarks and
southeast Missouri with the remainder of the CWA drying out and
warming up this afternoon. Can't rule out an isolated showers or
storm popping up during the heat of the day, but believe best
chances of convection will be further west as outlooked by SPC.  In
fact, much of the guidance keeps the evening hours dry for the area
with rain chances ramping up after 06z tonight from the west and
southwest. This uptick in PoPs heading into Friday will be in
response to the upper level system that has been parked across the
southwest CONUS finally ejecting into the Plains and large scale
lift overspreading the Midwest.

CVKING

.LONG TERM... (Friday through Wednesday)
Issued at 216 AM CDT Thu May 26 2016

Still appears that the best chances of widespread rainfall will
occur on Friday with likely to categorical PoPs in order. Cloud
cover and precipitation will keep temperatures cooler with highs
only in the 70s and lower 80s. Several rounds of showers and
thunderstorms will likely affect the CWA through Saturday night,
but none look particularly favorable for severe weather.

Appears that there will be a break from the rain on Sunday and
Memorial Day as temperatures warm back up into the middle 80s each
afternoon. Thunderstorm chances increase again next week, as
southwest flow reestablishes itself across the central CONUS.
Temperatures look to remain warm with highs in the 80s.

CVKING

&&

.AVIATION...  (For the 12z TAFs through 12z Friday Morning)
Issued at 624 AM CDT Thu May 26 2016

A line of showers and thunderstorms will move through the St.
Louis region impacting all terminals between 12-14z with wind
gusts to 30 mph and visibilities as low as 2sm. Following the
initial line, showers and some thunder will linger through around
15z. Light showers may also impact KUIN and KCOU for a short time
through 15z. After 15z predominately VFR flight conditions are
expected at all the terminals through mid-evening. During the
evening a new area of showers and thunderstorms originating in
the Plains will push into western MO, and then move east-
northeast across central and eastern MO during the late evening
and overnight hours.

Specifics for KSTL:

A line of showers and thunderstorms will move through KSTL between
12-14z with wind gusts to 30 mph and visibilities as low as 2sm.
Following the initial line, showers and some thunder may linger
through around 15z. After 15z predominately VFR flight conditions
are expected until the overnight hours. An area of showers and
thunderstorms originating in the Plains later this afternoon will
move into eastern MO during the overnight/early Friday morning
time frame.

Glass

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...None.
IL...None.
&&

WFO LSX

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
407 AM CDT THU MAY 26 2016

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-271200-
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL-
MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL-
CALHOUN IL-JERSEY IL-MADISON IL-SAINT CLAIR IL-MONROE IL-KNOX MO-
LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO-
AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO-
LINCOLN MO-GASCONADE MO-WARREN MO-SAINT CHARLES MO-FRANKLIN MO-
SAINT LOUIS MO-SAINT LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO-
WASHINGTON MO-SAINT FRANCOIS MO-SAINTE GENEVIEVE MO-IRON MO-
MADISON MO-REYNOLDS MO-
407 AM CDT THU MAY 26 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND
CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THIS MORNING...WITH
ADDITIONAL STORMS MOVING BACK INTO THE REGION THIS EVENING AND
OVERNIGHT. A FEW OF THE THUNDERSTORMS MAY BECOME SEVERE AND
CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS TONIGHT ACROSS
PARTS OF CENTRAL MISSOURI.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THE THREAT OF THUNDERSTORMS WILL CONTINUE THROUGH SATURDAY NIGHT.
ISOLATED STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE SATURDAY AND
SATURDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TONIGHT.

CVKING

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
610 AM CDT THU MAY 26 2016

MOZ052-261200-
LINCOLN MO-
610 AM CDT THU MAY 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL LINCOLN COUNTY UNTIL 700
AM CDT...

AT 609 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
DAVIS...MOVING EAST AT 25 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
TROY...MOSCOW MILLS...DAVIS...HAWK POINT...
FOUNTAIN N' LAKES AND CAVE.

THIS ALSO INCLUDES  CUIVRE RIVER STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3896 9117 3909 9115 3910 9077 3892 9079
TIME...MOT...LOC 1109Z 275DEG 24KT 3902 9108

CVKING

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
626 AM CDT THU MAY 26 2016

ILZ058-098-099-MOZ052-061-261215-
CALHOUN IL-JERSEY IL-GREENE IL-ST. CHARLES MO-LINCOLN MO-
626 AM CDT THU MAY 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN GREENE...JERSEY...
SOUTHEASTERN CALHOUN...NORTHWESTERN ST. CHARLES AND EASTERN LINCOLN
COUNTIES UNTIL 715 AM CDT...

AT 626 AM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM NEAR ELSBERRY TO NEAR WINFIELD TO NEAR
WENTZVILLE. MOVEMENT WAS EAST AT 60 MPH.

DIME SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
O'FALLON...WENTZVILLE...GODFREY...LAKE ST. LOUIS...JERSEYVILLE...
ST. PAUL...CARROLLTON...WINFIELD...HARDIN...GRAFTON...ELSAH...
WEST ALTON...JOSEPHVILLE...PORTAGE DES SIOUX...OLD KANE...
ORCHARD FARMS...KANE...OLD MONROE...FIELDON AND BATCHTOWN.

THIS INCLUDES INTERSTATE 70 IN MISSOURI BETWEEN EXITS 209 AND 212.

THIS ALSO INCLUDES  PERE MARQUETTE STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3935 9024 3889 9027 3879 9087 3893 9076
      3919 9075
TIME...MOT...LOC 1126Z 251DEG 51KT 3913 9072 3894 9073 3877 9089

CVKING

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
702 AM CDT THU MAY 26 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     TSTM WND GST     1 SSW HAZELWOOD         38.76N  90.37W
05/26/2016  M48 MPH          ST. LOUIS          MO   ASOS

&&

MILLER

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