Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 183, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 1, 2012, 4:28 PM CDT for Randolph County, Saint Clair County, Washington County, Illinois. It was in force for 47 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
- Jul 1, 2012, 4:28 PM CDT (21:28 UTC)
- Expired
- Jul 1, 2012, 5:15 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Randolph County, IL, Saint Clair County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 104 km from the middle of the area, began a volume at 21:30 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 |
|---|---|---|---|
| Jul 1, 4:28 PM CDT | HAIL 0.7 | Houston, IL | |
| Jul 1, 4:36 PM CDT | HAIL 1 | 2 S Marissa, IL | |
| Jul 1, 4:37 PM CDT | HAIL 1 | Marissa, IL | |
| Jul 1, 4:41 PM CDT | HAIL 1 | 2 S Marissa, IL | REPORT FROM JUST OUTSIDE OF MARISSA...HAIL CRACKED WINDSHIELD IN VEHICLE |
| Jul 1, 4:42 PM CDT | HAIL 1 | 2 S Marissa, IL | REPORT FROM JUST OUTSIDE OF MARISSA...HAIL CRACKED WINDSHIELD IN VEHICLE |
| Jul 1, 4:42 PM CDT | HAIL 1 | Marissa, IL | REPORT FROM JUST OUTSIDE OF MARISSA...HAIL CRACKED WINDSHIELD IN VEHICLE |
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, 9.5 hours before the alert went out and 229 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
- 2061 J/kg
- Mixed-layer CIN
- -149 J/kg
- Mixed-layer LCL
- 1957 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
587
WUUS53 KLSX 012128
SVRLSX
ILC157-163-189-012215-
/O.NEW.KLSX.SV.W.0183.120701T2128Z-120701T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
428 PM CDT SUN JUL 1 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN RANDOLPH COUNTY IN SOUTHWEST ILLINOIS...
SOUTHEASTERN ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...
SOUTHWESTERN WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 515 PM CDT
* AT 426 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MARISSA...
AND MOVING NORTHEAST AT 35 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
* LOCATIONS IMPACTED INCLUDE...
MARISSA...TILDEN...COULTERVILLE...LIVELY GROVE...ST. LIBORY...
ELKTON...STONE CHURCH...JOHANNISBURG...OAKDALE...VENEDY AND CORDES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST
LOUIS.
LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.
&&
LAT...LON 3821 8956 3822 8959 3819 8959 3808 8975
3821 8990 3845 8965 3845 8963 3829 8945
TIME...MOT...LOC 2128Z 227DEG 29KT 3821 8974
HAIL...1.00IN
WIND...60 MPH
$$
PHILLIPSON2 follow-up statements
518
WWUS53 KLSX 012148
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
448 PM CDT SUN JUL 1 2012
ILC157-163-189-012215-
/O.CON.KLSX.SV.W.0183.000000T0000Z-120701T2215Z/
RANDOLPH IL-ST. CLAIR IL-WASHINGTON IL-
448 PM CDT SUN JUL 1 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
WASHINGTON...SOUTHEASTERN ST. CLAIR AND NORTHEASTERN RANDOLPH
COUNTIES UNTIL 515 PM CDT...
AT 443 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR TILDEN...AND
MOVING NORTHEAST AT 30 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS REPORTED QUARTER SIZED HAIL IN
MARISSA.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.
LOCATIONS IMPACTED INCLUDE...
LIVELY GROVE...ST. LIBORY...ELKTON...STONE CHURCH...JOHANNISBURG...
OAKDALE AND VENEDY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST
LOUIS.
LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.
&&
LAT...LON 3821 8956 3822 8959 3819 8959 3808 8975
3821 8990 3845 8965 3845 8963 3829 8945
TIME...MOT...LOC 2148Z 227DEG 27KT 3826 8966
HAIL...1.00IN
WIND...60 MPH
$$
PHILLIPSON309
WWUS53 KLSX 012218
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
518 PM CDT SUN JUL 1 2012
ILC157-163-189-012228-
/O.EXP.KLSX.SV.W.0183.000000T0000Z-120701T2215Z/
RANDOLPH IL-ST. CLAIR IL-WASHINGTON IL-
518 PM CDT SUN JUL 1 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WASHINGTON...
SOUTHEASTERN ST. CLAIR AND NORTHEASTERN RANDOLPH COUNTIES HAS
EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND 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 3821 8956 3822 8959 3819 8959 3808 8975
3821 8990 3845 8965 3845 8963 3829 8945
TIME...MOT...LOC 2148Z 227DEG 27KT 3826 8966
$$
PHILLIPSONThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 3:29 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 46 min |
| Jul 1, 5:47 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 20 min |
| Jul 1, 6:28 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 17 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.