Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 85, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jul 31, 2012, 9:34 AM CDT for Champaign County, Vermilion County, Illinois. It was in force for 41 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
- Jul 31, 2012, 9:34 AM CDT (14:34 UTC)
- Expired
- Jul 31, 2012, 10:15 AM CDT
- In force
- 41 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Champaign County, IL, Vermilion County, IL
The radar
The Lincoln radar (KILX), 122 km from the middle of the area, began a volume at 14:37 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 31, 10:07 AM CDT | HAIL 1 | 5 W Collison, IL | |
| Jul 31, 10:22 AM CDT | HAIL 0.88 | 1 Nnw Fithian, IL | PEA TO NICKEL SIZE HAIL |
| Jul 31, 10:23 AM CDT | HAIL 0.25 | 3 E Ogden, IL | INTERSECTION OF HIGHWAYS 49 AND 150 |
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, 2.6 hours before the alert went out and 61 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
- 2241 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 958 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
495
WUUS53 KILX 311434
SVRILX
ILC019-183-311515-
/O.NEW.KILX.SV.W.0085.120731T1434Z-120731T1515Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
934 AM CDT TUE JUL 31 2012
THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS...
NORTHWESTERN VERMILION COUNTY IN EAST CENTRAL ILLINOIS...
* UNTIL 1015 AM CDT.
* AT 933 AM 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
RANKIN...OR 9 MILES EAST OF PAXTON...AND MOVING SOUTH AT 30 MPH.
* LOCATIONS IMPACTED INCLUDE...
GIFFORD...POTOMAC...ARMSTRONG...MIDDLE FORK WILDLIFE AREA...
COLLISON...ROYAL AND KICKAPOO STATE PARK.
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 4012 8801 4041 8804 4040 8796 4041 8794
4048 8794 4049 8793 4049 8780 4011 8764
TIME...MOT...LOC 1434Z 346DEG 27KT 4046 8794
WIND...HAIL 60MPH 1.00IN
$$2 follow-up statements
669
WWUS53 KILX 311458
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
958 AM CDT TUE JUL 31 2012
ILC019-183-311515-
/O.CON.KILX.SV.W.0085.000000T0000Z-120731T1515Z/
VERMILION IL-CHAMPAIGN IL-
958 AM CDT TUE JUL 31 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
CHAMPAIGN AND CENTRAL VERMILION COUNTIES UNTIL 1015 AM CDT...
AT 955 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
POTOMAC...OR 14 MILES EAST OF RANTOUL...MOVING SOUTH AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
MIDDLE FORK WILDLIFE AREA...COLLISON...ROYAL AND KICKAPOO STATE
PARK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4043 8778 4011 8764 4012 8801 4039 8804
4040 8796 4041 8794
TIME...MOT...LOC 1458Z 346DEG 27KT 4029 8788
WIND...HAIL 60MPH 1.00IN
$$
HJS986
WWUS53 KILX 311517
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1017 AM CDT TUE JUL 31 2012
ILC019-183-311527-
/O.EXP.KILX.SV.W.0085.000000T0000Z-120731T1515Z/
VERMILION IL-CHAMPAIGN IL-
1017 AM CDT TUE JUL 31 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHAMPAIGN AND
CENTRAL VERMILION COUNTIES IS BEING REISSUED...
PLEASE REFER TO THAT BULLETIN FOR THE LATEST SEVERE WEATHER
INFORMATION.
LAT...LON 4043 8778 4011 8764 4012 8801 4039 8804
4040 8796 4041 8794
TIME...MOT...LOC 1458Z 346DEG 27KT 4029 8788
$$The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 9:07 AM CDT | Special Weather Statement | ILX | Vermilion | 53 min |
| Jul 31, 10:20 AM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 29 min |
| Jul 31, 12:57 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 49 min |
| Jul 31, 3:54 PM CDT | Special Weather Statement | ILX | Champaign | 51 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.