Severe Thunderstorm Warning 26, NWS St. Louis, MO

422 
WWUS53 KLSX 010829
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
229 AM CST WED MAR 1 2017

MOC189-510-010839-
/O.CAN.KLSX.SV.W.0026.000000T0000Z-170301T0900Z/
St. Louis City MO-St. Louis MO-
229 AM CST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ST. LOUIS COUNTY
AND SOUTHERN ST. LOUIS CITY IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 400 AM CST for south central
and southwestern Illinois.

LAT...LON 3838 9032 3855 9020 3867 9015 3878 8968
      3865 8970 3865 8971 3847 8972
TIME...MOT...LOC 0829Z 256DEG 53KT 3859 8991 

$$

ILC119-133-163-010900-
/O.CON.KLSX.SV.W.0026.000000T0000Z-170301T0900Z/
Monroe IL-Madison IL-St. Clair IL-
229 AM CST WED MAR 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CST
FOR NORTHWESTERN MONROE...SOUTHEASTERN MADISON AND NORTHERN ST. CLAIR
COUNTIES IN SOUTHWESTERN ILLINOIS...

At 229 AM CST, a severe thunderstorm was located over O'Fallon,
moving east at 60 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Belleville, O'Fallon, East St. Louis, Collinsville, Fairview Heights,
Cahokia, Swansea, Shiloh, Highland, Troy, Columbia, Maryville,
Mascoutah, Pontoon Beach, Centreville, Lebanon, Freeburg, Caseyville,
Washington Park and Dupo.

This includes Interstate 64 in Illinois between exits 9 and 27.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 400 AM CST for south central
and southwestern Illinois.

LAT...LON 3838 9032 3855 9020 3867 9015 3878 8968
      3865 8970 3865 8971 3847 8972
TIME...MOT...LOC 0829Z 256DEG 53KT 3859 8991 

HAIL...<.75IN
WIND...60MPH
 
$$

Tilly

970 
WWUS53 KLSX 010843
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
243 AM CST WED MAR 1 2017

ILC119-133-010853-
/O.CAN.KLSX.SV.W.0026.000000T0000Z-170301T0900Z/
Monroe IL-Madison IL-
243 AM CST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MONROE AND
SOUTHEASTERN MADISON COUNTIES IN SOUTHWESTERN ILLINOIS IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 400 AM CST for southwestern
Illinois.

LAT...LON 3842 9006 3865 8991 3865 8971 3847 8972
TIME...MOT...LOC 0843Z 256DEG 45KT 3851 8967 

$$

ILC163-010900-
/O.CON.KLSX.SV.W.0026.000000T0000Z-170301T0900Z/
St. Clair IL-
243 AM CST WED MAR 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CST
FOR NORTHEASTERN ST. CLAIR COUNTY...

At 243 AM CST, a severe thunderstorm was located over New Memphis,
moving east at 50 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Belleville, O'Fallon, Swansea, Shiloh, Mascoutah, Lebanon, Freeburg,
New Baden, Scott AFB and Summerfield.

This includes Interstate 64 in Illinois between exits 14 and 27.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 400 AM CST for southwestern
Illinois.

LAT...LON 3842 9006 3865 8991 3865 8971 3847 8972
TIME...MOT...LOC 0843Z 256DEG 45KT 3851 8967 

HAIL...<.75IN
WIND...60MPH
 
$$

Tilly

720 
WWUS53 KLSX 010849
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
249 AM CST WED MAR 1 2017

ILC163-010858-
/O.CAN.KLSX.SV.W.0026.000000T0000Z-170301T0900Z/
St. Clair IL-
249 AM CST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ST. CLAIR COUNTY
IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.  However gusty winds up to 
45 mph are still possible with these thunderstorm.

A tornado watch remains in effect until 400 AM CST for southwestern
Illinois.

LAT...LON 3842 9006 3865 8991 3865 8971 3847 8972
TIME...MOT...LOC 0847Z 257DEG 48KT 3853 8957 

$$

Tilly

Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
1155 PM CST Tue Feb 28 2017

.SHORT TERM...  (Through Late Wednesday Afternoon)
Issued at 301 PM CST Tue Feb 28 2017

Cold front extends from a surface low over southeastern IA southwest
into the OK Panhandle.  A wind advisory is in effect across parts of
northeast and central MO and west central IL where very strong wind
gusts were occurring due to a tight surface pressure gradient and
momentum transfer to the surface underneath a strong southwest low
level jet.  Tornado watches have been issued for our forecast area
for the rest of the afternoon into the early evening hours.
Sufficient wind shear/instability exists for scattered supercells in
the warm sector capable of large hail, damaging winds and isolated
tornadoes late this afternoon and early this evening.  As an upper
level trough over the Plains approaches, the cold front will drop
southeastward through our forecast area tonight.  A greater coverage
of storms is expected along this front with the potential for more
severe storms late this evening and into the overnight hours.  The
primary threat with this second round of storms will be damaging
winds.  The threat of severe storms should end by early Wednesday
morning with lingering showers and a few storms across southeast MO
and southwest IL until late morning. Colder temperatures can be
expected tonight across northeast MO due to cold air advection
behind the cold front, then colder conditions for the entire area on
Wednesday with only a small diurnal rise in temperatures expected.
The sky should gradually clear out from southwest to northeast late
Tuesday morning and afternoon as a surface ridge builds
southeastward into our area behind the cold front, and as the upper
level trough begins to shift northeast of our area.

GKS

.LONG TERM...  (Wednesday Night through Next Tuesday)
Issued at 301 PM CST Tue Feb 28 2017

(Wednesday night - Next Monday night)

High pressure over the area begins to push east Wednesday night into
early Thursday morning ahead an approaching short wave trough. The
short wave trough will swing through NE MO/WC IL but will likely be
a dry passage. The dry weather will persist till late Sunday night
into Monday as another frontal boundary passes through the region
providing chances of showers and thunderstorms. The front departs
the area on Monday night and high pressure slides into the region
from the Northern Plains.

Temperatures will return to seasonal values on Thursday and Friday,
then once again go above seasonal norms for the reminder of the
forecast period.

Kelly
&&

.AVIATION...  (For the 06z TAFs through 06z Wednesday Night)
Issued at 1150 PM CST Tue Feb 28 2017

Cold front moving southeast through taf sites, already south of
UIN as of 05z. Showers and storms to persist through about 11z
Wednesday before coming to an end. Otherwise, VFR cigs to briefly
dip down to MVFR behind frontal boundary, then bounce back up to
VFR by mid to late morning. Other main issue will be the winds.
Winds to veer to the west to northwest behind boundary and become
gusty. Winds will diminish by sunset Wednesday evening.

SPECIFICS FOR KSTL:
Cold front moving southeast through region. Showers and storms to
persist through about 11z Wednesday before coming to an end.
Otherwise, VFR cigs to briefly dip down to MVFR behind frontal
boundary, then bounce back up to VFR by 16z Wednesday. Other main
issue will be the winds. Winds to veer to the west to northwest
behind boundary and become gusty, before diminishing by 03z
Thursday.

Byrd
&&

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

WFO LSX

Hazardous Weather Outlook
National Weather Service Saint Louis MO
333 PM CST Tue Feb 28 2017

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-011200-
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-
333 PM CST Tue Feb 28 2017

This hazardous weather outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.

.DAY ONE...Tonight

Severe thunderstorms are likely across the region. The greatest
risk is across southeast and east-central Missouri northeastward
into southwest and central Illinois. Severe weather threats
include very large hail, damaging winds, and tornadoes. Several
strong, long track tornadoes are also possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

There is a heightened fire danger for much of the area north of
Interstate 70 on Thursday afternoon due to low relative humidity
values, dry fuels, and gusty westerly winds.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely this afternoon and tonight.

TES

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
107 AM CST WED MAR 01 2017

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

0103 AM     HAIL             4 SSW GASCONADE         38.62N  91.59W
03/01/2017  E0.70 INCH       GASCONADE          MO   TRAINED SPOTTER

&&

EVENT NUMBER LSX1700193

GOSSELIN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
130 AM CST WED MAR 01 2017

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

0129 AM     HAIL             HAZELWOOD               38.78N  90.36W
03/01/2017  E0.25 INCH       ST. LOUIS          MO   AMATEUR RADIO

&&

EVENT NUMBER LSX1700194

GOSSELIN

Special Weather Statement
National Weather Service St Louis MO
143 AM CST WED MAR 1 2017

MOZ059-062-072-073-010830-
Gasconade MO-Washington MO-Franklin MO-Crawford MO-
143 AM CST WED MAR 1 2017

...SIGNIFICANT WEATHER ADVISORY FOR CRAWFORD...WESTERN WASHINGTON...
SOUTHERN FRANKLIN AND SOUTHEASTERN GASCONADE COUNTIES UNTIL 230 AM
CST...

At 143 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from near Beaufort to 6 miles southeast of Rolla.
Movement was east at 50 mph.

Wind gusts of 50 to 55 mph will be possible with these storms.

Locations impacted include...
Union, Sullivan, St. Clair, Cuba, Steelville, Bourbon, Anthonies
Mill, Parkway, Leasburg, Miramiguoa Park, Cherryville, Richwoods,
Beaufort, Lonedell, Leslie, St. Cloud, Stanton, Robertsville, Latty
and Shirley.

This includes Interstate 44 in Missouri between exits 203 and 242.

This also includes  Onondaga Cave State Park and Meramec State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

A tornado watch remains in effect until 400 AM CST for east central
Missouri.

LAT...LON 3779 9153 3813 9153 3844 9124 3842 9074
      3811 9080 3778 9089
TIME...MOT...LOC 0743Z 271DEG 44KT 3838 9121 3790 9166

Glass

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
153 AM CST WED MAR 01 2017

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

0153 AM     HAIL             VILLA RIDGE             38.47N  90.88W
03/01/2017  E0.50 INCH       FRANKLIN           MO   TRAINED SPOTTER

&&

EVENT NUMBER LSX1700195

BRITT

Special Weather Statement
National Weather Service St Louis MO
156 AM CST WED MAR 1 2017

MOZ063-064-010830-
St. Louis MO-St. Louis City MO-
156 AM CST WED MAR 1 2017

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ST. LOUIS COUNTY AND ST.
LOUIS CITY UNTIL 230 AM CST...

At 155 AM CST, Doppler radar was tracking a strong thunderstorm over
Des Peres, moving east at 45 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
St. Louis, Chesterfield, University City, Ballwin, Kirkwood, Maryland
Heights, Webster Groves, Ferguson, Manchester, Creve Coeur, Overland,
Clayton, Cahokia, Jennings, St. Ann, Crestwood, Bellefontaine
Neighbors, Town and Country, Ellisville and Berkeley.

This includes Interstate 44 in Missouri between exits 272 and 277.

This also includes  Scott Joplin Historic Site.

A tornado watch remains in effect until 400 AM CST for southwestern
Illinois...and east central Missouri.

LAT...LON 3877 9017 3875 9018 3872 9021 3871 9021
      3866 9018 3863 9018 3859 9019 3857 9023
      3853 9025 3850 9040 3850 9054 3865 9060
      3883 9013 3881 9012
TIME...MOT...LOC 0755Z 249DEG 38KT 3861 9045

Tilly

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
201 AM CST WED MAR 01 2017

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

0159 AM     TSTM WND GST     1 NNE SULLIVAN          38.23N  91.16W
03/01/2017  M51 MPH          FRANKLIN           MO   AWOS

&&

EVENT NUMBER LSX1700196

MILLER