STL Metro SkyWarn


Steven J Wooten updated the group photo in St. Louis Metro SKYWARN. ...

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US National Weather Service Saint Louis Missouri
11 mins ·

At 9 AM snow had begun to fall over central MO. The storm will continue to move east into the St. Louis metro and IL by late morning/early afternoon. Accumulations of around 1 inch can be expected for this first round of snow.
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*** THIS POST IS OUTDATED. Please visit our Facebook page directly at www.facebook.com/NWSStLouis (or click on our name) to see the latest information. *** At 9 AM snow had begun to fall over central MO. The storm will continue to move east into the St. Louis metro and IL by late morning/early afternoon. Accumulations of around 1 inch can be expected for this first round of snow.

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Winter storm reports are tricky. Learn the skills you need to make accurate observations. ...

Know how to measure ice accretion? A bit more complicated than snow! Here is how. We would appreciate any ice accumulation reports this through this evening. Please include time of observation, location (relative to nearest town), and amount to the nearest tenth of an inch. Thank you in advance for your help!

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Know before you go. #Skywarn #STLWX ...

*** THIS POST IS OUTDATED. Please visit our Facebook page directly at www.facebook.com/NWSStLouis (or click on our name) to see the latest information. *** A wintry mix of snow, sleet, and freezing rain will spread from west to east on Sunday. This graphic shows the approximate start/end times for precipitation for several locations. Looking for info for other cities or towns? Visit www.weather.gov and type in your zip code to see forecasts for other areas.

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Weather forecasts change. Be weather aware Sunday. ...

***THIS POST IS OUTDATED, check our Facebook page for the most up to date info, US National Weather Service Saint Louis Missouri***Freezing rain, possibly mixed with sleet, will overspread the region from west to east on Sunday. These are the approximate arrival times for the winter weather.

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A look back on the weather of 2017. ...

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High uncertainty in Christmas weather forecasts. ...

The spaghetti chart is used to assess the similarity in weather model forecasts for specific features like the position of the jet stream or freezing line. When the lines are on top of each other like the forecast valid today in the upper right, there is good model agreement and low uncertainty leading to high confidence and high predictability. When the lines are chaotic like the image valid Christmas Day in the lower right, there is significant model disagreement and high uncertainty leading to low confidence and low predictability. How does this relate to the current forecast for the next 7 days? We know it is going to get much colder this weekend, but there is high uncertainty in just how cold and whether we will see any snow heading into Christmas Day.

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WIND ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST SATURDAY THE NATIONAL WEATHER SERVICE IN SAINT LOUIS HAS ISSUED A WIND
ADVISORY, WHICH IS IN EFFECT FROM 6 AM TO 6 PM CST SATURDAY.

* TIMING...SATURDAY MORNING THROUGH LATE SATURDAY AFTERNOON.

* WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 45 MPH.

* IMPACTS...WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT. THESE
WINDS CAN ALSO LIFT AND MOVE TRASH CANS, LAWN FURNITURE, AND
OTHER LOOSE OUTDOOR OBJECTS. MINOR TREE AND BUILDING DAMAGE IS
ALSO POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS
A WIND ADVISORY IS ISSUED WHEN SUSTAINED WINDS ARE FORECAST TO BE
30 TO 39 MPH OR GUSTS WILL RANGE BETWEEN 45 AND 57 MPH. WINDS OF
THESE MAGNITUDES MAY CAUSE MINOR PROPERTY DAMAGE WITHOUT EXTRA
PRECAUTIONS. MOTORISTS IN HIGH PROFILE VEHICLES SHOULD USE
CAUTION UNTIL THE WINDS DIMINISH.

&&

Issuing Office: St. Louis

Source: National Weather Service

Issued: Fri, Nov 17, 3:35 PM CST
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571
WWUS53 KLSX 052017
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
217 PM CST SUN NOV 5 2017

MOC183-189-510-052045-
/O.CON.KLSX.SV.W.0185.000000T0000Z-171105T2045Z/
St. Louis City MO-St. Charles MO-St. Louis MO-
217 PM CST SUN NOV 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CST
FOR CENTRAL ST. CHARLES AND CENTRAL ST. LOUIS COUNTIES AND ST. LOUIS
CITY...

At 217 PM CST, a severe thunderstorm was located over Creve Coeur,
moving east at 45 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.

Locations impacted include...
St. Louis, St. Charles, St. Peters, Florissant, Chesterfield,
Wildwood, University City, Ballwin, Kirkwood, Maryland Heights,
Hazelwood, Webster Groves, Ferguson, Manchester, Creve Coeur,
Overland, Clayton, Jennings, St. Ann and Bridgeton.

This also includes Scott Joplin Historic Site, Confluence State
Park, and First Missouri State Capitol Historic Site.

This includes Interstate 70 in Missouri between exits 228 and 231.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

&&

A tornado watch remains in effect until 700 PM CST for southwestern
Illinois...and east central Missouri.

LAT...LON 3880 9012 3877 9017 3875 9018 3872 9021
3871 9021 3868 9019 3865 9018 3862 9018
3859 9020 3859 9065 3877 9057 3884 9011
TIME...MOT...LOC 2017Z 264DEG 37KT 3868 9044

HAIL...1.75IN
WIND...60MPH

$$
...

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THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR NORTHERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI EAST CENTRAL FRANKLIN COUNTY IN EAST CENTRAL MISSOURI SOUTHWESTERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 315 PM CST.

* AT 224 PM CST, A SEVERE THUNDERSTORM WAS LOCATED NEAR VILLA RIDGE,
MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS, SIDING, AND TREES.

* LOCATIONS IMPACTED INCLUDE WILDWOOD, BALLWIN, KIRKWOOD, WEBSTER GROVES, ARNOLD, MANCHESTER,
CRESTWOOD, UNION, EUREKA, SUNSET HILLS, DES PERES, PACIFIC, VALLEY
PARK, SHREWSBURY, GLENDALE, FENTON, BYRNES MILL, WARSON WOODS,
LAKESHIRE AND OAKLAND.

THIS INCLUDES THE FOLLOWING HIGHWAYS INTERSTATE 44 IN MISSOURI BETWEEN EXITS 242 AND 277.
INTERSTATE 55 IN MISSOURI BETWEEN EXITS 187 AND 191.

THIS ALSO INCLUDES ROUTE 66 STATE PARK, CASTLEWOOD STATE PARK,
MASTODON HISTORIC SITE, AND ROBERTSVILLE STATE PARK.

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 700 PM CST FOR SOUTHWESTERN
ILLINOIS...AND EAST CENTRAL MISSOURI.

HAIL...1.00IN
WIND...60MPH

Issuing Office: St. Louis

Source: National Weather Service

Issued: Sun, Nov 5
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THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR ST. LOUIS CITY IN EAST CENTRAL MISSOURI CENTRAL ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI CENTRAL ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 245 PM CST.

* AT 159 PM CST, A SEVERE THUNDERSTORM WAS LOCATED OVER CHESTERFIELD,
MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS, SIDING, AND TREES.

* LOCATIONS IMPACTED INCLUDE ST. LOUIS, O'FALLON, ST. CHARLES, ST. PETERS, FLORISSANT,
CHESTERFIELD, WILDWOOD, UNIVERSITY CITY, BALLWIN, KIRKWOOD,
MARYLAND HEIGHTS, HAZELWOOD, WEBSTER GROVES, FERGUSON, MANCHESTER,
CREVE COEUR, OVERLAND, CLAYTON, JENNINGS AND ST. ANN.

THIS INCLUDES INTERSTATE 70 IN MISSOURI BETWEEN EXITS 228 AND 231.

THIS ALSO INCLUDES BABLER MEMORIAL STATE PARK, SCOTT JOPLIN HISTORIC
SITE, CONFLUENCE STATE PARK, AND FIRST MISSOURI STATE CAPITOL
HISTORIC SITE.

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 700 PM CST FOR SOUTHWESTERN
ILLINOIS...AND EAST CENTRAL MISSOURI.

HAIL...1.00IN
WIND...60MPH

Issuing Office: St. Louis

Source: National Weather Service

Issued: Sun, Nov 5, 1:59 PM CST
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THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 512 INEFFECT UNTIL 7 PM CST THIS EVENING FOR THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 12 COUNTIES

IN SOUTH CENTRAL ILLINOIS

BOND IL CLINTON IL FAYETTE IL
MARION IL MONTGOMERY IL WASHINGTON IL

IN SOUTHWEST ILLINOIS

JERSEY IL MACOUPIN IL MADISON IL
MONROE IL RANDOLPH IL SAINT CLAIR IL

IN MISSOURI THIS WATCH INCLUDES 15 COUNTIES

IN CENTRAL MISSOURI

OSAGE MO

IN EAST CENTRAL MISSOURI

CRAWFORD MO FRANKLIN MO GASCONADE MO
JEFFERSON MO SAINT CHARLES MO SAINT LOUIS CITY MO
SAINT LOUIS MO WARREN MO WASHINGTON MO

IN SOUTHEAST MISSOURI

IRON MO MADISON MO REYNOLDS MO
SAINT FRANCOIS MO SAINTE GENEVIEVE MO

THIS INCLUDES THE CITIES OF ALTON, BELLEVILLE, CAHOKIA,
CENTRALIA, CHESTER, EDWARDSVILLE, FARMINGTON, LITCHFIELD,
SAINT CHARLES, SAINT LOUIS, SALEM, SPARTA, SULLIVAN, UNION,
VANDALIA, AND WASHINGTON.

Issuing Office: St. Louis

Source: National Weather Service

Issued: Sun, Nov 5, 12:35 PM CST
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The NWS office will be looking for storm reports as the weather develops. #SKYWARN ...

Can you help us spread the word for the potential of severe thunderstorms this afternoon and evening? These storms will be capable of producing very large hail, damaging wind gusts and a few tornadoes. Remember severe thunderstorms and tornadoes can and have happened all months of the year! Those in or near the risk area, or that have travel plans today and tonight across eastern Missouri, Illinois and Indiana should be aware of the forecast and stay tuned for the latest updates.

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Severe Thunderstorm Warning including Alton IL, Godfrey IL, Wood River IL until 8:45 PM CDT t.co/w2B2ODMtG6 #STLWX ...

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Severe Thunderstorm Warning including Saint Louis MO, Granite City IL, East Saint Louis IL until 8:00 PM CDT t.co/4zb6da7LQp #STLWX ...

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A look at NWS winter storm definitions. ...

We know fall just started buuuut...we've consolidated some of our winter weather products and have changed the wording of all winter products so they are easier to understand and quicker to read. The change begins Oct 2 so we wanted to let you know! Here's our watch, advisory, and warning meanings to help you prepare for this winter season!

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Even the NWS radar wasn't immune to Hurricane Maria! ...

Actual situation of Doppler radar after Hurricane María. Situación actual del radar Doppler luego del paso del huracán María. #prwx #usviwx

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The Hurricane Watch Net will activate for Hurricane Irma , Tuesday, September 5 @ 2:00 PM EDT – 1800 UTC on our primary net frequency of 14.325 MHz. Once activated, we will remain in continuous operation until further notice. Daytime operations on 14.325 MHz will begin at 7:00 AM EDT – 1100 UTC each day continuing for as long as propagation allows. Operations on 7.268 MHz will begin starting 6:00 PM EDT – 2200 UTC and continue overnight. If propagation dictates, we will operate both frequencies at the same time. de ka4rur ...

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