Alert archive / Illinois / Tornado Warnings in 2009
Tornado Warning 9, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Mar 8, 2009, 12:33 PM CDT for Marion County, Illinois. It was in force for 10 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 8, 2009, 12:33 PM CDT (17:33 UTC)
- Expired
- Mar 8, 2009, 12:43 PM CDT
- In force
- 10 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
County Marion County, IL
The radar
The Evansville,IN radar (KVWX), 96 km from the middle of the area, began a volume at 17:33 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.
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 8, 6:32 AM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 5.6 hours before the alert went out and 185 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 441 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- 389 m²/s²
- 0-3 km storm-relative helicity
- 401 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS53 KLSX 081733
TORLSX
ILC121-081815-
/O.NEW.KLSX.TO.W.0009.090308T1733Z-090308T1815Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1233 PM CDT SUN MAR 8 2009
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN MARION COUNTY IN SOUTH CENTRAL ILLINOIS
* UNTIL 115 PM CDT
* AT 1230 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM WITH STRONG ROTATION 8 MILES SOUTHWEST OF
HELM...OR ABOUT 10 MILES NORTHEAST OF MOUNT VERNON...MOVING EAST AT
60 MPH.
* LOCATIONS IMPACTED INCLUDE...
HELM...
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
DESTRUCTIVE STRAIGHT LINE WINDS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
LAT...LON 3847 8871 3847 8878 3847 8894 3851 8895
3858 8870 3848 8870
TIME...MOT...LOC 1733Z 251DEG 52KT 3846 8879
$$
GLASS1 follow-up statement
000
WWUS53 KLSX 081743
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1243 PM CDT SUN MAR 8 2009
ILC121-081754-
/O.CAN.KLSX.TO.W.0009.000000T0000Z-090308T1815Z/
MARION IL-
1244 PM CDT SUN MAR 8 2009
...THE TORNADO WARNING FOR SOUTHEASTERN MARION COUNTY IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE...AND A TORNADO WATCH
REMAINS IN EFFECT UNTIL 200 PM.
LAT...LON 3847 8871 3847 8878 3847 8894 3851 8895
3858 8870 3848 8870
TIME...MOT...LOC 1744Z 251DEG 52KT 3851 8860
$$
GLASSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 7, 9:54 PM CST | Flash Flood Watch | LSX | Adams | 8 hr |
| Mar 8, 10:51 AM CDT | Tornado Warning | LSX | Calhoun, Jersey | 24 min |
| Mar 8, 11:06 AM CDT | Tornado Warning | LSX | Monroe, Randolph, Saint Clair | 39 min |
| Mar 8, 11:16 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin, Montgomery | 44 min |
| Mar 8, 11:17 AM CDT | Tornado Warning | LSX | Greene, Macoupin | 13 min |
| Mar 8, 11:32 AM CDT | Tornado Warning | LSX | Randolph, Saint Clair, Washington | 43 min |
| Mar 8, 12:16 PM CDT | Wind Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 7 hr |
Nearby
Tornado Warnings in Illinois, 2009Every tornado warning in 2009Tornadoes in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.