Alert archive / Illinois / Tornado Warnings in 2013
Tornado Warning 39, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Nov 17, 2013, 11:41 AM CST for Montgomery County, Illinois. It was in force for 19 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
- Nov 17, 2013, 11:41 AM CST (17:41 UTC)
- Expired
- Nov 17, 2013, 12:00 PM CST
- In force
- 19 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
County Montgomery County, IL
The radar
The Lincoln radar (KILX), 91 km from the middle of the area, began a volume at 17:41 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 |
|---|---|---|---|
| Nov 17, 11:53 AM CST | HAIL 1 | 6 N Witt, IL | ESTIMATED NICKEL TO QUARTER SIZED HAIL...NEAR MONTGOMERY CHRISTIAN COUNTY LINE |
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 |
|---|---|---|---|
| Nov 17, 8:40 AM CST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 5.7 hours before the alert went out and 114 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
- 1021 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 506 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 398 m²/s²
- 0-3 km storm-relative helicity
- 396 m²/s²
- Significant tornado parameter
- 2.7
- Supercell composite
- 11.0
The text
As transmitted, in the capitals the NWS used until 2016.
283
WFUS53 KLSX 171741
TORLSX
ILC135-171800-
/O.NEW.KLSX.TO.W.0039.131117T1741Z-131117T1800Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1141 AM CST SUN NOV 17 2013
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
NORTHERN MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL NOON CST
* AT 1139 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR RAYMOND...AND MOVING NORTHEAST AT 65 MPH.
HAZARD...TORNADO AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS
WILL BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS
LIKELY.
* LOCATIONS IMPACTED INCLUDE...
HARVEL...WENONAH AND OHLMAN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA.
&&
LAT...LON 3934 8914 3923 8963 3931 8967 3938 8953
3936 8952 3935 8914
TIME...MOT...LOC 1741Z 244DEG 55KT 3930 8956
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
CVKING1 follow-up statement
220
WWUS53 KLSX 171756
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1156 AM CST SUN NOV 17 2013
ILC135-171807-
/O.EXP.KLSX.TO.W.0039.000000T0000Z-131117T1800Z/
MONTGOMERY IL-
1156 AM CST SUN NOV 17 2013
...THE TORNADO WARNING FOR NORTHERN MONTGOMERY COUNTY WILL EXPIRE AT
NOON CST...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 4 PM.
LAT...LON 3934 8914 3923 8963 3931 8967 3938 8953
3936 8952 3935 8914
TIME...MOT...LOC 1757Z 244DEG 55KT 3941 8928
$$
CVKINGThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 17, 11:04 AM CST | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Montgomery | 41 min |
| Nov 17, 11:11 AM CST | Tornado Warning | LSX | Macoupin, Montgomery | 19 min |
| Nov 17, 11:21 AM CST | Tornado Warning | LSX | Macoupin, Montgomery | 24 min |
| Nov 17, 11:38 AM CST | Severe Thunderstorm Warning | LSX | Madison, Monroe, Saint Clair | 37 min |
| Nov 17, 11:49 AM CST | Tornado Warning | LSX | Randolph | 26 min |
| Nov 17, 11:53 AM CST | Tornado Warning | LSX | Clinton, Washington | 37 min |
| Nov 17, 11:56 AM CST | Tornado Warning | LSX | Bond, Clinton, Fayette | 34 min |
| Nov 17, 12:09 PM CST | Tornado Warning | LSX | Randolph | 21 min |
| Nov 17, 12:14 PM CST | Tornado Warning | LSX | Marion | 46 min |
| Nov 17, 12:24 PM CST | Severe Thunderstorm Warning | LSX | Bond, Fayette, Madison, Montgomery | 51 min |
Nearby
Tornado Warnings in Illinois, 2013Every tornado warning in 2013Tornadoes in 2013
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.