Alert archive / Illinois / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 37, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 7, 2017, 1:35 AM CST for 5 counties in Illinois. It was in force for 43 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 7, 2017, 1:35 AM CST (07:35 UTC)
- Expired
- Mar 7, 2017, 2:18 AM CST
- In force
- 43 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Clinton County, IL, Marion County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 115 km from the middle of the area, began a volume at 07:39 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 7, 1:45 AM CST | TSTM WND DMG | 3 Nw Posey, IL | TREE BLOWN DOWN AT REDWOOD STREET AND CAMP JOY ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 6, 8:52 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 7.6 hours before the alert went out and 212 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 4 J/kg
- Mixed-layer CIN
- -285 J/kg
- Mixed-layer LCL
- 651 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 475 m²/s²
- 0-3 km storm-relative helicity
- 484 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
300
WUUS53 KLSX 070735
SVRLSX
ILC027-121-157-163-189-070830-
/O.NEW.KLSX.SV.W.0037.170307T0735Z-170307T0830Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
135 AM CST TUE MAR 7 2017
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Clinton County in south central Illinois...
Washington County in south central Illinois...
Southwestern Marion County in south central Illinois...
Northeastern Randolph County in southwestern Illinois...
Eastern St. Clair County in southwestern Illinois...
* Until 230 AM CST.
* At 134 AM CST, severe thunderstorms were located along a line
extending from Aviston to near Baldwin, moving east at 55 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Trained weather spotters. Trained spotters measured a 60
mph wind gust in Mascoutah.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Centralia, Salem, Mascoutah, Breese, Sparta, New Baden, Carlyle,
Nashville, Trenton, New Athens, Marissa, Aviston, Okawville,
Sandoval, Germantown, Albers, Wamac, Central City, Odin and
Beckemeyer.
This includes the following highways...
Interstate 57 in Illinois near exit 116.
Interstate 64 in Illinois between exits 27 and 61.
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 3848 8899 3847 8914 3821 8915 3822 8959
3812 8959 3821 8992 3823 8990 3824 8991
3866 8975 3864 8888
TIME...MOT...LOC 0734Z 271DEG 48KT 3860 8962 3823 8985
HAIL...0.75IN
WIND...60MPH
$$
Kanofsky3 follow-up statements
903
WWUS53 KLSX 070754
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
154 AM CST TUE MAR 7 2017
ILC027-121-157-163-189-070830-
/O.CON.KLSX.SV.W.0037.000000T0000Z-170307T0830Z/
Clinton IL-Washington IL-Marion IL-Randolph IL-St. Clair IL-
154 AM CST TUE MAR 7 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CST
FOR CENTRAL CLINTON...WASHINGTON...SOUTHWESTERN MARION...NORTHEASTERN
RANDOLPH AND SOUTHEASTERN ST. CLAIR COUNTIES...
At 154 AM CST, severe thunderstorms were located along a line
extending from Shattuc to near Nashville to near Coulterville, moving
east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Centralia, Salem, Breese, Sparta, Carlyle, Nashville, Marissa,
Okawville, Sandoval, Germantown, Wamac, Central City, Odin,
Beckemeyer, Coulterville, Tilden, Lively Grove, Irvington, Ashley and
Baldwin.
This includes the following highways...
Interstate 57 in Illinois near exit 116.
Interstate 64 in Illinois between exits 41 and 61.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.
For your protection move to an interior room on the lowest floor of a
building.
&&
A tornado watch remains in effect until 400 AM CST for south central
and southwestern Illinois.
LAT...LON 3848 8899 3847 8914 3821 8915 3822 8959
3812 8959 3821 8992 3832 8978 3842 8966
3856 8957 3866 8955 3864 8888
TIME...MOT...LOC 0754Z 277DEG 38KT 3862 8921 3834 8943 3816 8964
HAIL...0.75IN
WIND...60MPH
$$
Britt544
WWUS53 KLSX 070807
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
207 AM CST TUE MAR 7 2017
ILC157-163-070816-
/O.CAN.KLSX.SV.W.0037.000000T0000Z-170307T0830Z/
Randolph IL-St. Clair IL-
207 AM CST TUE MAR 7 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN RANDOLPH AND
SOUTHEASTERN ST. CLAIR COUNTIES IS CANCELLED...
The storms which prompted the warning have 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
Illinois.
LAT...LON 3848 8899 3847 8914 3821 8915 3822 8959
3832 8954 3840 8944 3847 8934 3854 8927
3865 8919 3864 8888
TIME...MOT...LOC 0806Z 257DEG 45KT 3863 8903 3837 8925 3823 8939
$$
ILC027-121-189-070830-
/O.CON.KLSX.SV.W.0037.000000T0000Z-170307T0830Z/
Clinton IL-Washington IL-Marion IL-
207 AM CST TUE MAR 7 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CST
FOR EAST CENTRAL CLINTON...WASHINGTON AND SOUTHWESTERN MARION
COUNTIES...
At 206 AM CST, severe thunderstorms were located along a line
extending from Odin to near Ashley to 8 miles south of Nashville,
moving east at 50 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Centralia, Salem, Nashville, Sandoval, Wamac, Central City, Odin,
Irvington, Ashley, Shattuc, Posen, Beaucoup, Hoyleton, Hoffman,
Junction City, Richview, Oakdale, Radom, New Minden and Du Bois.
This includes the following highways...
Interstate 57 in Illinois near exit 116.
Interstate 64 in Illinois between exits 50 and 61.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.
For your protection move to an interior room on the lowest floor of a
building.
&&
A tornado watch remains in effect until 400 AM CST for south central
Illinois.
LAT...LON 3848 8899 3847 8914 3821 8915 3822 8959
3832 8954 3840 8944 3847 8934 3854 8927
3865 8919 3864 8888
TIME...MOT...LOC 0806Z 257DEG 45KT 3863 8903 3837 8925 3823 8939
HAIL...0.75IN
WIND...60MPH
$$
Britt619
WWUS53 KLSX 070818
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
218 AM CST TUE MAR 7 2017
ILC027-121-189-070827-
/O.CAN.KLSX.SV.W.0037.000000T0000Z-170307T0830Z/
Clinton IL-Washington IL-Marion IL-
218 AM CST TUE MAR 7 2017
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CLINTON...
WASHINGTON AND SOUTHWESTERN MARION COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been cancelled.
A tornado watch remains in effect until 400 AM CST for south central
Illinois.
LAT...LON 3848 8899 3847 8914 3821 8915 3822 8959
3832 8954 3840 8944 3847 8934 3854 8927
3865 8919 3864 8888
TIME...MOT...LOC 0815Z 271DEG 48KT 3863 8886 3837 8908 3823 8922
$$
BrittThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 10:20 PM CST | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 55 min |
| Mar 6, 10:22 PM CST | Tornado Warning | LSX | Adams, Brown | 30 min |
| Mar 6, 10:55 PM CST | Severe Thunderstorm Warning | LSX | Pike | 50 min |
| Mar 7, 12:08 AM CST | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin, Madison, Montgomery | 52 min |
| Mar 7, 12:48 AM CST | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 57 min |
| Mar 7, 12:55 AM CST | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 39 min |
| Mar 7, 1:11 AM CST | Tornado Warning | LSX | Fayette, Montgomery | 21 min |
| Mar 7, 4:00 AM CST | Red Flag Warning | LSX | Adams, Brown, Calhoun, Greene, Jersey, Pike | 15 hr |
Nearby
Severe Thunderstorm Warnings in Illinois, 2017Every severe thunderstorm warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.