Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 68, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at May 20, 2012, 5:46 PM CDT for Morgan County, Sangamon County, Illinois. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 20, 2012, 5:46 PM CDT (22:46 UTC)
- Expired
- May 20, 2012, 6:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Morgan County, IL, Sangamon County, IL
The radar
The Lincoln radar (KILX), 77 km from the middle of the area, began a volume at 22:49 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.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.8 hours before the alert went out and 130 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
- 616 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 1773 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -67 m²/s²
- 0-3 km storm-relative helicity
- -55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
320
WUUS53 KILX 202246
SVRILX
ILC137-167-202330-
/O.NEW.KILX.SV.W.0068.120520T2246Z-120520T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
546 PM CDT SUN MAY 20 2012
THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN MORGAN COUNTY IN WEST CENTRAL ILLINOIS...
SOUTHWESTERN SANGAMON COUNTY IN CENTRAL ILLINOIS...
* UNTIL 630 PM CDT.
* AT 544 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
FRANKLIN...OR 11 MILES SOUTHEAST OF JACKSONVILLE...AND MOVING
NORTHEAST AT 20 MPH.
* LOCATIONS IMPACTED INCLUDE...
WAVERLY...ALEXANDER...NEW BERLIN...LOAMI AND BERLIN.
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 3990 8997 3963 8971 3951 9002 3952 9010
3964 9023
TIME...MOT...LOC 2247Z 228DEG 10KT 3963 9006
WIND...HAIL 60MPH 1.00IN
$$
BARNES2 follow-up statements
636
WWUS53 KILX 202303
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
603 PM CDT SUN MAY 20 2012
ILC137-167-202330-
/O.CON.KILX.SV.W.0068.000000T0000Z-120520T2330Z/
MORGAN IL-SANGAMON IL-
603 PM CDT SUN MAY 20 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
SANGAMON AND EASTERN MORGAN COUNTIES UNTIL 630 PM CDT...
AT 558 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
ALEXANDER...OR 12 MILES EAST OF JACKSONVILLE...MOVING NORTHEAST AT 20
MPH.
LOCATIONS IMPACTED INCLUDE...
NEW BERLIN...LOAMI AND BERLIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3990 8997 3963 8971 3951 9002 3952 9010
3964 9023
TIME...MOT...LOC 2303Z 228DEG 10KT 3968 9000
WIND...HAIL 60MPH 1.00IN
$$
BARNES862
WWUS53 KILX 202329
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
629 PM CDT SUN MAY 20 2012
ILC137-167-202340-
/O.EXP.KILX.SV.W.0068.000000T0000Z-120520T2330Z/
MORGAN IL-SANGAMON IL-
629 PM CDT SUN MAY 20 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SANGAMON AND
EASTERN MORGAN COUNTIES HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.
LAT...LON 3990 8997 3963 8971 3951 9002 3952 9010
3964 9023
TIME...MOT...LOC 2330Z 228DEG 10KT 3973 8993
$$
BARNESThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 4:00 PM CDT | Flash Flood Warning | ILX | Effingham | 6 hr |
| May 20, 4:54 PM CDT | Special Weather Statement | ILX | Sangamon | 51 min |
| May 20, 5:04 PM CDT | Special Weather Statement | ILX | Logan | 41 min |
| May 20, 5:36 PM CDT | Special Weather Statement | ILX | Logan | 54 min |
| May 20, 5:38 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Sangamon | 37 min |
| May 20, 6:11 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Mason, Tazewell | 49 min |
| May 20, 6:56 PM CDT | Special Weather Statement | ILX | Champaign | 64 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.