Alert archive / Illinois / Tornado Warnings in 2011
Tornado Warning 70, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at May 22, 2011, 7:51 PM CDT for Calhoun County, Jersey County, Illinois. It was in force for 39 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
- May 22, 2011, 7:51 PM CDT (00:51 UTC)
- Expired
- May 22, 2011, 8:30 PM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Calhoun County, IL, Jersey County, IL
The radar
The St Louis radar (KLSX), 38 km from the middle of the area, began a volume at 00:54 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 |
|---|---|---|---|
| May 22, 12:51 PM CDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.9 hours before the alert went out and 205 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
- 2469 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 952 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 228 m²/s²
- 0-3 km storm-relative helicity
- 319 m²/s²
- Significant tornado parameter
- 3.8
- Supercell composite
- 17.0
The text
As transmitted, in the capitals the NWS used until 2016.
893
WFUS53 KLSX 230051
TORLSX
ILC013-083-230130-
/O.NEW.KLSX.TO.W.0070.110523T0051Z-110523T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
751 PM CDT SUN MAY 22 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
CALHOUN COUNTY IN SOUTHWEST ILLINOIS...
SOUTHWESTERN JERSEY COUNTY IN SOUTHWEST ILLINOIS...
* UNTIL 830 PM CDT
* AT 749 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR WINFIELD...OR 11 MILES NORTH OF ST. PAUL...
AND MOVING EAST AT 50 MPH.
* LOCATIONS IMPACTED INCLUDE...
JERSEYVILLE...GRAFTON...ELSAH...BATCHTOWN...BEECHVILLE...MEPPEN...
NUTWOOD...OTTERVILLE AND MCCLUSKY.
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.
TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.
&&
LAT...LON 3896 9027 3896 9028 3895 9038 3897 9042
3897 9046 3894 9067 3899 9068 3905 9071
3908 9069 3914 9029
TIME...MOT...LOC 0051Z 269DEG 41KT 3900 9067
$$
TILLY1 follow-up statement
164
WWUS53 KLSX 230129
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
829 PM CDT SUN MAY 22 2011
ILC013-083-230139-
/O.EXP.KLSX.TO.W.0070.000000T0000Z-110523T0130Z/
JERSEY IL-CALHOUN IL-
829 PM CDT SUN MAY 22 2011
...THE TORNADO WARNING FOR CALHOUN AND SOUTHWESTERN JERSEY COUNTIES
WILL EXPIRE AT 830 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 900 PM.
LAT...LON 3896 9027 3896 9028 3895 9038 3897 9042
3897 9046 3894 9067 3899 9068 3905 9071
3908 9069 3914 9029
TIME...MOT...LOC 0129Z 269DEG 41KT 3901 9011
$$
GLASSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 7:45 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 45 min |
| May 22, 8:08 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin | 41 min |
| May 22, 8:15 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison | 45 min |
| May 23, 12:04 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin, Madison, Saint Clair | 41 min |
| May 23, 12:42 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Jersey, Macoupin, Madison, Montgomery and 1 more | 48 min |
| May 23, 12:53 PM CDT | Areal Flood Advisory | LSX | Madison, Monroe, Saint Clair | 3 hr |
| May 23, 1:14 PM CDT | Areal Flood Advisory | LSX | Bond, Clinton | 4 hr |
| May 23, 1:26 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 49 min |
| May 23, 1:32 PM CDT | Areal Flood Advisory | LSX | Fayette, Marion, Washington | 4 hr |
| May 23, 2:15 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 16 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.