Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 87, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 30, 2012, 5:29 PM CDT for Clinton County, Marion County, Illinois. It was in force for 31 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
- Mar 30, 2012, 5:29 PM CDT (22:29 UTC)
- Expired
- Mar 30, 2012, 6:00 PM CDT
- In force
- 31 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Clinton County, IL, Marion County, IL
The radar
The Evansville,IN radar (KVWX), 127 km from the middle of the area, began a volume at 22:30 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 |
|---|---|---|---|
| Mar 30, 5:48 PM CDT | HAIL 1 | Centralia, IL |
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 |
|---|---|---|---|
| Mar 30, 2:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.5 hours before the alert went out and 185 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
- 164 J/kg
- Mixed-layer CIN
- -244 J/kg
- Mixed-layer LCL
- 1045 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 206 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
845
WUUS53 KLSX 302229
SVRLSX
ILC027-121-302300-
/O.NEW.KLSX.SV.W.0087.120330T2229Z-120330T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
529 PM CDT FRI MAR 30 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
SOUTHWESTERN MARION COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 600 PM CDT
* AT 526 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR SHATTUC...OR 6 MILES NORTHWEST OF
CENTRALIA...AND MOVING EAST AT 10 MPH.
* LOCATIONS IMPACTED INCLUDE...
CENTRALIA...SHATTUC...CENTRAL CITY...SANDOVAL...ODIN...FAIRMAN...
JUNCTION CITY...SELMAVILLE...WALNUT HILL AND TONTI.
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 3847 8898 3847 8915 3850 8915 3850 8930
3851 8931 3868 8924 3868 8898
TIME...MOT...LOC 2230Z 271DEG 7KT 3857 8920
WIND...HAIL <50MPH 1.00IN
$$
CARNEY1 follow-up statement
445
WWUS53 KLSX 302245
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
545 PM CDT FRI MAR 30 2012
ILC027-121-302300-
/O.CON.KLSX.SV.W.0087.000000T0000Z-120330T2300Z/
MARION IL-CLINTON IL-
545 PM CDT FRI MAR 30 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
CLINTON AND SOUTHWESTERN MARION COUNTIES UNTIL 600 PM CDT...
AT 540 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR CENTRAL CITY...OR NEAR CENTRALIA...MOVING EAST
AT 10 MPH.
LOCATIONS IMPACTED INCLUDE...
CENTRALIA...CENTRAL CITY...SANDOVAL...FAIRMAN...ODIN...JUNCTION
CITY...WALNUT HILL AND SELMAVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3847 8898 3847 8915 3850 8915 3850 8930
3851 8931 3868 8924 3868 8898
TIME...MOT...LOC 2245Z 271DEG 10KT 3854 8916
WIND...HAIL <50MPH 1.00IN
$$
CARNEYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 3:15 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion | 30 min |
| Mar 30, 3:20 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 25 min |
| Mar 30, 3:45 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 30 min |
| Mar 30, 4:43 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 32 min |
| Mar 30, 5:06 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 24 min |
| Mar 30, 5:15 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 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.