Alert archive / Illinois / Tornado Warnings in 2011
Tornado Warning 23, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 19, 2011, 4:59 PM CDT for Greene County, Pike County, Illinois. It was in force for 46 min. 6 reports 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
- Apr 19, 2011, 4:59 PM CDT (21:59 UTC)
- Expired
- Apr 19, 2011, 5:45 PM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Greene County, IL, Pike County, IL
The radar
The St Louis radar (KLSX), 85 km from the middle of the area, began a volume at 21:59 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 |
|---|---|---|---|
| Apr 19, 5:23 PM CDT | HAIL 1.75 | 4 W White Hall, IL | |
| Apr 19, 5:29 PM CDT | HAIL 1.75 | White Hall, IL | |
| Apr 19, 5:33 PM CDT | HAIL 1.75 | 1 Nw White Hall, IL | ABOUT TWO MINUTES FROM THE TIME OF THE REPORT |
| Apr 19, 5:38 PM CDT | TSTM WND GST 75 | Roodhouse, IL | |
| Apr 19, 5:38 PM CDT | HAIL 1 | Roodhouse, IL | |
| Apr 19, 5:54 PM CDT | HAIL 2.75 | Roodhouse, IL |
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 |
|---|---|---|---|
| Apr 19, 1:00 PM CDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.0 hours before the alert went out and 177 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
- 453 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 189 m²/s²
- 0-3 km storm-relative helicity
- 345 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
630
WFUS53 KLSX 192159
TORLSX
ILC061-149-192245-
/O.NEW.KLSX.TO.W.0023.110419T2159Z-110419T2245Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
459 PM CDT TUE APR 19 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
NORTHERN GREENE COUNTY IN SOUTHWEST ILLINOIS...
SOUTHEASTERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...
* UNTIL 545 PM CDT
* AT 454 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 8 MILES NORTHEAST OF BELLEVIEW...OR 13 MILES WEST
OF WHITE HALL...AND MOVING EAST AT 40 MPH.
THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. TAKE ACTION NOW.
* LOCATIONS IMPACTED INCLUDE...
WHITE HALL...ROODHOUSE...ATHENSVILLE...HAYPRESS...HILLVIEW...
WALKERSVILLE...PATTERSON...BELLTOWN...BERDAN...BARROW AND WRIGHTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.
&&
LAT...LON 3953 9016 3937 9015 3933 9061 3939 9062
3940 9071 3945 9073 3953 9047
TIME...MOT...LOC 2158Z 259DEG 36KT 3941 9060
$$
TILLY1 follow-up statement
394
WWUS53 KLSX 192217
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
517 PM CDT TUE APR 19 2011
ILC149-192227-
/O.CAN.KLSX.TO.W.0023.000000T0000Z-110419T2245Z/
PIKE IL-
517 PM CDT TUE APR 19 2011
...THE TORNADO WARNING FOR SOUTHEASTERN PIKE COUNTY IN WEST CENTRAL
ILLINOIS IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.
LAT...LON 3953 9016 3937 9015 3933 9060 3934 9061
3939 9062 3947 9061 3949 9060 3953 9047
TIME...MOT...LOC 2217Z 263DEG 37KT 3943 9046
$$
ILC061-192245-
/O.CON.KLSX.TO.W.0023.000000T0000Z-110419T2245Z/
GREENE IL-
517 PM CDT TUE APR 19 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN GREENE COUNTY
UNTIL 545 PM CDT...
AT 516 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR WHITE HALL...MOVING EAST AT 40 MPH.
LOCATIONS IMPACTED INCLUDE...
WHITE HALL...ROODHOUSE...ATHENSVILLE...BELLTOWN...BERDAN...BARROW
AND WRIGHTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.
&&
LAT...LON 3953 9016 3937 9015 3933 9060 3934 9061
3939 9062 3947 9061 3949 9060 3953 9047
TIME...MOT...LOC 2217Z 263DEG 37KT 3943 9046
$$
TILLYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 4:35 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Pike | 40 min |
| Apr 19, 5:14 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Pike | 31 min |
| Apr 19, 6:21 AM CDT | Areal Flood Advisory | LSX | Madison, Monroe, Saint Clair | 3 hr |
| Apr 19, 6:22 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair | 38 min |
| Apr 19, 6:26 AM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 49 min |
| Apr 19, 6:56 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 49 min |
| Apr 19, 7:08 AM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison, Montgomery | 37 min |
| Apr 19, 7:36 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Macoupin, Madison, Montgomery | 39 min |
| Apr 19, 8:07 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 38 min |
| Apr 19, 8:25 AM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 29 min |
| Apr 19, 8:41 AM CDT | Severe Thunderstorm Warning | LSX | Fayette | 34 min |
| Apr 19, 11:18 AM CDT | River Flood Warning | LSX | Calhoun, Greene, Jersey | 85 days |
| Apr 19, 3:46 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 44 min |
| Apr 19, 3:59 PM CDT | Tornado Warning | LSX | Pike | 46 min |
| Apr 19, 4:18 PM CDT | Tornado Warning | LSX | Calhoun, Greene, Pike | 42 min |
| Apr 19, 4:31 PM CDT | Tornado Warning | LSX | Calhoun | 44 min |
| Apr 19, 4:41 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin, Madison | 49 min |
| Apr 19, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin | 47 min |
| Apr 19, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 47 min |
| Apr 19, 5:36 PM CDT | Tornado Warning | LSX | Macoupin | 39 min |
| Apr 19, 5:42 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 34 min |
| Apr 19, 5:44 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 34 min |
| Apr 19, 6:01 PM CDT | Tornado Warning | LSX | Montgomery | 44 min |
| Apr 19, 6:05 PM CDT | Tornado Warning | LSX | Macoupin, Montgomery | 40 min |
| Apr 19, 6:12 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 48 min |
| Apr 19, 6:14 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison | 61 min |
| Apr 19, 6:31 PM CDT | Tornado Warning | LSX | Montgomery | 27 min |
| Apr 19, 6:56 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Macoupin, Madison, Montgomery | 64 min |
Nearby
Tornado Warnings in Illinois, 2011Every tornado warning in 2011Tornadoes in 2011
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.