Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 85, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 30, 2012, 5:06 PM CDT for Marion County, Illinois. It was in force for 24 min. 3 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 30, 2012, 5:06 PM CDT (22:06 UTC)
- Expired
- Mar 30, 2012, 5:30 PM CDT
- In force
- 24 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Marion County, IL
The radar
The Evansville,IN radar (KVWX), 112 km from the middle of the area, began a volume at 22:07 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, 5:10 PM CDT | HAIL 1 | 2 Nnw Odin, IL | PEA TO QUARTER SIZE HAIL |
| Mar 30, 5:11 PM CDT | HAIL 1 | 2 Nnw Selmaville, IL | |
| Mar 30, 5:11 PM CDT | HAIL 1 | 2 Nw Selmaville, IL | LOT OF HAIL AROUND QUARTER SIZE |
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, 10.1 hours before the alert went out and 169 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.
545 WUUS53 KLSX 302206 SVRLSX ILC121-302230- /O.NEW.KLSX.SV.W.0085.120330T2206Z-120330T2230Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 506 PM CDT FRI MAR 30 2012 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL MARION COUNTY IN SOUTH CENTRAL ILLINOIS... * UNTIL 530 PM CDT * AT 503 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR ODIN...OR NEAR SALEM...AND MOVING EAST AT 15 MPH. * LOCATIONS IMPACTED INCLUDE... SALEM...OMEGA...STEPHEN FORBES STATE PARK...SELMAVILLE...TONTI... BRUBAKER...CARTTER...ALMA AND IUKA. 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 3873 8875 3851 8877 3854 8915 3872 8913 TIME...MOT...LOC 2206Z 273DEG 11KT 3863 8902 WIND...HAIL <50MPH 1.00IN $$ CARNEY
1 follow-up statement
018 WWUS53 KLSX 302220 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 520 PM CDT FRI MAR 30 2012 ILC121-302230- /O.CON.KLSX.SV.W.0085.000000T0000Z-120330T2230Z/ MARION IL- 520 PM CDT FRI MAR 30 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL MARION COUNTY UNTIL 530 PM CDT... AT 517 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR SALEM...MOVING EAST AT 15 MPH. LOCATIONS IMPACTED INCLUDE... SALEM...OMEGA...STEPHEN FORBES STATE PARK...BRUBAKER...CARTTER... ALMA AND IUKA. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 3873 8875 3851 8877 3854 8915 3872 8913 TIME...MOT...LOC 2220Z 273DEG 11KT 3863 8897 WIND...HAIL <50MPH 1.00IN $$ CARNEY
The 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, 5:15 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 15 min |
| Mar 30, 5:29 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion | 31 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.