Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 53, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 15, 2012, 5:17 PM CDT for Calhoun County, Greene County, Jersey County, Illinois. It was in force for 43 min. 8 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
- Mar 15, 2012, 5:17 PM CDT (22:17 UTC)
- Expired
- Mar 15, 2012, 6:00 PM CDT
- In force
- 43 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Calhoun County, IL, Greene County, IL, Jersey County, IL
The radar
The St Louis radar (KLSX), 56 km from the middle of the area, began a volume at 22:18 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 |
|---|---|---|---|
| Mar 15, 5:40 PM CDT | HAIL 1.75 | Carrollton, IL | |
| Mar 15, 5:47 PM CDT | HAIL 1.5 | Carrollton, IL | |
| Mar 15, 5:47 PM CDT | HAIL 2.75 | Carrollton, IL | FROM ILLINOIS STATE POLICE |
| Mar 15, 5:48 PM CDT | HAIL 1.5 | Carrollton, IL | |
| Mar 15, 5:49 PM CDT | HAIL 1.75 | Carrollton, IL | HAIL SIZE RANGING BETWEEN GOLF BALL AND TENNIS BALL |
| Mar 15, 5:50 PM CDT | HAIL 2.75 | Carrollton, IL | RELAYED BY LOCAL MEDIA |
| Mar 15, 5:53 PM CDT | HAIL 1.75 | 2 E Carrollton, IL | |
| Mar 15, 5:54 PM CDT | HAIL 2.75 | Carrollton, IL | HAIL REPORTED FROM PEA TO BASEBALL SIZE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.3 hours before the alert went out and 193 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
- 1579 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 821 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
600 WUUS53 KLSX 152217 SVRLSX ILC013-061-083-152300- /O.NEW.KLSX.SV.W.0053.120315T2217Z-120315T2300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 517 PM CDT THU MAR 15 2012 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CALHOUN COUNTY IN SOUTHWEST ILLINOIS... SOUTHWESTERN GREENE COUNTY IN SOUTHWEST ILLINOIS... CENTRAL JERSEY COUNTY IN SOUTHWEST ILLINOIS... * UNTIL 600 PM CDT * AT 513 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR HARDIN...OR 10 MILES EAST OF ELSBERRY...AND MOVING NORTHEAST AT 15 MPH. * LOCATIONS IMPACTED INCLUDE... JERSEYVILLE...OLD KANE...CARROLLTON...FIELDON...ELDRED...WOODY... KANE...BERDAN AND BELLTOWN. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 3909 9027 3909 9068 3921 9071 3939 9040 TIME...MOT...LOC 2218Z 247DEG 14KT 3918 9058 WIND...HAIL 60MPH 1.00IN $$ MILLER
2 follow-up statements
411
WWUS53 KLSX 152239
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
539 PM CDT THU MAR 15 2012
ILC013-083-152249-
/O.CAN.KLSX.SV.W.0053.000000T0000Z-120315T2300Z/
JERSEY IL-CALHOUN IL-
539 PM CDT THU MAR 15 2012
...THE SEVERE THUNDERSTORM WARNING FOR CALHOUN AND CENTRAL JERSEY
COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA.
LAT...LON 3918 9031 3918 9049 3917 9048 3917 9051
3919 9051 3919 9056 3918 9057 3918 9058
3916 9058 3924 9059 3937 9039
TIME...MOT...LOC 2239Z 247DEG 14KT 3922 9049
$$
ILC061-152300-
/O.CON.KLSX.SV.W.0053.000000T0000Z-120315T2300Z/
GREENE IL-
539 PM CDT THU MAR 15 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
GREENE COUNTY UNTIL 600 PM CDT...
AT 538 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES
SOUTHWEST OF CARROLLTON...OR 11 MILES NORTHWEST OF JERSEYVILLE...
MOVING NORTHEAST AT 15 MPH.
LOCATIONS IMPACTED INCLUDE...
OLD KANE...CARROLLTON...WOODY AND KANE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3918 9031 3918 9049 3917 9048 3917 9051
3919 9051 3919 9056 3918 9057 3918 9058
3916 9058 3924 9059 3937 9039
TIME...MOT...LOC 2239Z 247DEG 14KT 3922 9049
WIND...HAIL 60MPH 1.00IN
$$
MILLER276 WWUS53 KLSX 152247 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 547 PM CDT THU MAR 15 2012 ILC061-152300- /O.CON.KLSX.SV.W.0053.000000T0000Z-120315T2300Z/ GREENE IL- 547 PM CDT THU MAR 15 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL GREENE COUNTY UNTIL 600 PM CDT... AT 543 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A SEVERE THUNDERSTORM PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES SOUTHWEST OF CARROLLTON...OR 11 MILES NORTHWEST OF JERSEYVILLE...MOVING NORTHEAST AT 15 MPH. IN ADDITION...AT 545 PM GOLF BALL SIZE HAIL WAS REPORTED IN CARROLLTON WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... OLD KANE...CARROLLTON...KANE AND BERDAN. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 3918 9031 3919 9047 3926 9053 3937 9039 TIME...MOT...LOC 2247Z 247DEG 14KT 3923 9045 WIND...HAIL 60MPH 1.75IN $$ MILLER
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 14, 7:00 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 45 min |
| Mar 14, 7:41 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 31 min |
| Mar 15, 4:12 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Madison | 33 min |
| Mar 15, 4:46 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 29 min |
| Mar 15, 5:52 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 38 min |
| Mar 15, 6:16 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 44 min |
| Mar 15, 6:50 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Pike | 29 min |
| Mar 15, 6:58 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 15 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2012Every severe thunderstorm warning in 2012
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.