Alert archive / Illinois / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 2, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Feb 20, 2014, 2:25 PM CST for Adams County, Brown County, Pike County, Illinois. It was in force for 35 min. 2 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
- Feb 20, 2014, 2:25 PM CST (20:25 UTC)
- Expired
- Feb 20, 2014, 3:00 PM CST
- In force
- 35 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Adams County, IL, Brown County, IL, Pike County, IL
The radar
The Lincoln radar (KILX), 120 km from the middle of the area, began a volume at 20:26 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 |
|---|---|---|---|
| Feb 20, 2:33 PM CST | TSTM WND GST 60 | Griggsville, IL | |
| Feb 20, 2:33 PM CST | TORNADO | 1 W Detroit, IL | HOG SHELTER DESTROYED BETWEEN DETROIT AND PITTSFIELD. |
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 |
|---|---|---|---|
| Feb 20, 1:36 PM CST | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.4 hours before the alert went out and 181 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
- 507 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 582 m²/s²
- 0-3 km storm-relative helicity
- 576 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
949
WUUS53 KLSX 202025
SVRLSX
ILC001-009-149-202100-
/O.NEW.KLSX.SV.W.0002.140220T2025Z-140220T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
225 PM CST THU FEB 20 2014
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN ADAMS COUNTY IN WEST CENTRAL ILLINOIS...
BROWN COUNTY IN WEST CENTRAL ILLINOIS...
EASTERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...
* UNTIL 300 PM CST
* AT 220 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES SOUTH OF CAMP POINT TO 5 MILES NORTHEAST OF
ATLAS...AND MOVING NORTHEAST AT 65 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING AND TREES.
* LOCATIONS IMPACTED INCLUDE...
CLAYTON...GOLDEN...BUCKHORN...GRIGGSVILLE...MOUNT STERLING...
TIME...CHATTON...MILTON...BEDFORD...LA PRAIRIE...MOUND STATION...
DETROIT...MONTEZUMA...PERRY...FLORENCE...VALLEY CITY...
CHAMBERSBURG...VERSAILLES...RIPLEY AND COOPERTOWN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.
PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.
TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!
&&
LAT...LON 4011 9090 4011 9070 4003 9065 4003 9060
3999 9060 3998 9051 3992 9053 3987 9058
3983 9056 3972 9064 3958 9058 3953 9058
3946 9061 3940 9090 4019 9118 4020 9091
TIME...MOT...LOC 2025Z 226DEG 57KT 4001 9096 3961 9081
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
BRITT2 follow-up statements
729
WWUS53 KLSX 202045
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
245 PM CST THU FEB 20 2014
ILC001-202054-
/O.CAN.KLSX.SV.W.0002.000000T0000Z-140220T2100Z/
ADAMS IL-
245 PM CST THU FEB 20 2014
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ADAMS COUNTY IS
CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
LAT...LON 3947 9085 4007 9084 4011 9070 4003 9065
4003 9060 3999 9060 3998 9051 3992 9053
3987 9058 3983 9056 3972 9064 3958 9058
3953 9058 3946 9061
TIME...MOT...LOC 2044Z 234DEG 47KT 4010 9070 3979 9057
3961 9068
$$
ILC009-149-202100-
/O.CON.KLSX.SV.W.0002.000000T0000Z-140220T2100Z/
PIKE IL-BROWN IL-
245 PM CST THU FEB 20 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR BROWN AND
EASTERN PIKE COUNTIES IN WEST CENTRAL ILLINOIS UNTIL 300 PM CST...
AT 242 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTH OF MOUNT STERLING TO NAPLES TO 5 MILES
EAST OF PITTSFIELD...AND MOVING NORTHEAST AT 55 MPH.
HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.
LOCATIONS IMPACTED INCLUDE...
MONTEZUMA...RIPLEY...COOPERTOWN...FLORENCE AND LA GRANGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3947 9085 4007 9084 4011 9070 4003 9065
4003 9060 3999 9060 3998 9051 3992 9053
3987 9058 3983 9056 3972 9064 3958 9058
3953 9058 3946 9061
TIME...MOT...LOC 2044Z 234DEG 47KT 4010 9070 3979 9057
3961 9068
HAIL...0.75IN
WIND...60MPH
$$
BRITT990
WWUS53 KLSX 202100
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
300 PM CST THU FEB 20 2014
ILC009-149-202110-
/O.EXP.KLSX.SV.W.0002.000000T0000Z-140220T2100Z/
PIKE IL-BROWN IL-
300 PM CST THU FEB 20 2014
...THE SEVERE THUNDERSTORM WARNING FOR BROWN AND EASTERN PIKE
COUNTIES IN WEST CENTRAL ILLINOIS HAS EXPIRED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
LAT...LON 3947 9085 4007 9084 4011 9070 4003 9065
4003 9060 3999 9060 3998 9051 3992 9053
3987 9058 3983 9056 3972 9064 3958 9058
3953 9058 3946 9061
TIME...MOT...LOC 2045Z 234DEG 47KT 4011 9068 3980 9056
3962 9067
$$
BRITTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 4:22 AM CST | Wind Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 20 hr |
| Feb 20, 1:44 PM CST | Severe Thunderstorm Warning | LSX | Adams, Pike | 46 min |
| Feb 20, 2:58 PM CST | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin, Montgomery | 47 min |
| Feb 20, 3:25 PM CST | Severe Thunderstorm Warning | LSX | Bond, Macoupin, Madison | 50 min |
| Feb 20, 3:42 PM CST | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 48 min |
| Feb 20, 3:55 PM CST | Severe Thunderstorm Warning | LSX | Bond, Fayette | 50 min |
| Feb 20, 4:01 PM CST | Severe Thunderstorm Warning | LSX | Clinton, Madison, Saint Clair | 44 min |
| Feb 20, 4:10 PM CST | Tornado Warning | LSX | Fayette, Montgomery | 20 min |
| Feb 20, 4:23 PM CST | Severe Thunderstorm Warning | LSX | Fayette | 52 min |
| Feb 20, 4:35 PM CST | Severe Thunderstorm Warning | LSX | Clinton, Marion, Randolph, Washington | 40 min |
| Feb 20, 4:40 PM CST | Tornado Warning | LSX | Fayette | 35 min |
| Feb 20, 5:09 PM CST | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion, Washington | 51 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2014Every severe thunderstorm warning in 2014
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.