Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 38, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 2, 2012, 11:29 AM CST for Clinton County, Randolph County, Washington County, Illinois. It was in force for 31 min. 4 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 2, 2012, 11:29 AM CST (17:29 UTC)
- Expired
- Mar 2, 2012, 12:00 PM CST
- 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, Randolph County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 110 km from the middle of the area, began a volume at 17:30 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 2, 11:40 AM CST | HAIL 1 | New Minden, IL | |
| Mar 2, 11:46 AM CST | HAIL 0.88 | Nashville, IL | HAIL COVERING GROUND. |
| Mar 2, 11:47 AM CST | HAIL 1 | Hoyleton, IL | |
| Mar 2, 11:49 AM CST | HAIL 1 | Nashville, 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 2, 5:52 AM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 2, 9:54 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 5.5 hours before the alert went out and 241 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
- 1770 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
219
WUUS53 KLSX 021729
SVRLSX
ILC027-157-189-021800-
/O.NEW.KLSX.SV.W.0038.120302T1729Z-120302T1800Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1129 AM CST FRI MAR 2 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
RANDOLPH COUNTY IN SOUTHWEST ILLINOIS...
WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL NOON CST
* AT 1126 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR SPARTA...AND MOVING NORTHEAST AT 60 MPH.
* LOCATIONS IMPACTED INCLUDE...
NASHVILLE...LIVELY GROVE...ASHLEY...IRVINGTON...WAMAC...SHATTUC...
ELKTON...OAKDALE...CORDES...ADDIEVILLE...FROGTOWN...POSEN...
COVINGTON...DU BOIS...NEW MINDEN...BEAUCOUP...HUEGELY...RADOM...
POSEY AND HOYLETON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
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 3822 8916 3822 8958 3795 8961 3782 8968
3795 8993 3797 8994 3796 8996 3804 9011
3822 8976 3822 8971 3827 8970 3872 8914
TIME...MOT...LOC 1729Z 238DEG 58KT 3821 8965
WIND...HAIL <50MPH 1.00IN
$$
MILLER2 follow-up statements
951 WWUS53 KLSX 021747 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1147 AM CST FRI MAR 2 2012 ILC157-021755- /O.CAN.KLSX.SV.W.0038.000000T0000Z-120302T1800Z/ RANDOLPH IL- 1147 AM CST FRI MAR 2 2012 ...THE SEVERE THUNDERSTORM WARNING FOR RANDOLPH COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 3822 8958 3826 8965 3872 8914 3822 8916 TIME...MOT...LOC 1745Z 238DEG 58KT 3834 8937 $$ ILC027-189-021800- /O.CON.KLSX.SV.W.0038.000000T0000Z-120302T1800Z/ WASHINGTON IL-CLINTON IL- 1147 AM CST FRI MAR 2 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL CLINTON AND WASHINGTON COUNTIES UNTIL NOON CST... AT 1143 AM CST...TRAINED WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR NASHVILLE...MOVING NORTHEAST AT 65 MPH. IN ADDITION...AT 1135 AM QUARTER SIZE HAIL WAS REPORTED IN NEW MENDON WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... ASHLEY...IRVINGTON...SHATTUC...DU BOIS...NEW MINDEN...BEAUCOUP... HUEGELY...RADOM...HOYLETON...RICHVIEW...HOFFMAN AND FERRIN. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. 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 3822 8958 3826 8965 3872 8914 3822 8916 TIME...MOT...LOC 1745Z 238DEG 58KT 3834 8937 WIND...HAIL <50MPH 1.00IN $$ MILLER
163 WWUS53 KLSX 021801 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1201 PM CST FRI MAR 2 2012 ILC027-189-021811- /O.EXP.KLSX.SV.W.0038.000000T0000Z-120302T1800Z/ WASHINGTON IL-CLINTON IL- 1201 PM CST FRI MAR 2 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CLINTON AND WASHINGTON COUNTIES HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO WATCH REMAINS IN EFFECT UNTIL 6 PM. LAT...LON 3822 8958 3826 8965 3872 8914 3822 8916 TIME...MOT...LOC 1747Z 238DEG 58KT 3835 8933 $$ MILLER
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 2, 5:10 AM CST | Severe Thunderstorm Warning | LSX | Calhoun | 39 min |
| Mar 2, 5:56 AM CST | Severe Thunderstorm Warning | LSX | Calhoun, Jersey, Macoupin, Madison | 49 min |
| Mar 2, 6:36 AM CST | Severe Thunderstorm Warning | LSX | Bond, Fayette, Macoupin, Madison, Montgomery | 39 min |
| Mar 2, 7:07 AM CST | Severe Thunderstorm Warning | LSX | Calhoun, Pike | 30 min |
| Mar 2, 7:14 AM CST | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 25 min |
| Mar 2, 9:49 AM CST | Severe Thunderstorm Warning | LSX | Clinton, Madison, Saint Clair | 41 min |
| Mar 2, 10:10 AM CST | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette | 50 min |
| Mar 2, 11:12 AM CST | Severe Thunderstorm Warning | LSX | Fayette, Marion | 16 min |
| Mar 2, 11:41 AM CST | Severe Thunderstorm Warning | LSX | Marion | 49 min |
| Mar 2, 1:59 PM CST | Wind Advisory | LSX | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more | 4 hr |
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.