Alert archive / Illinois / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 36, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Apr 1, 2012, 1:06 AM CDT for Knox County, Illinois. It was in force for 54 min. 2 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
- Apr 1, 2012, 1:06 AM CDT (06:06 UTC)
- Expired
- Apr 1, 2012, 2:00 AM CDT
- In force
- 54 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 50.0 mph
County Knox County, IL
The radar
The Quad Cities radar (KDVN), 68 km from the middle of the area, began a volume at 06:06 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 |
|---|---|---|---|
| Apr 1, 1:30 AM CDT | HAIL 1.75 | Rio, IL | |
| Apr 1, 1:51 AM CDT | HAIL 0.25 | Altona, 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 31, 9:24 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 6.1 hours before the alert went out and 66 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
- 1520 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 196 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
646
WUUS53 KILX 010606
SVRILX
ILC095-010700-
/O.NEW.KILX.SV.W.0036.120401T0606Z-120401T0700Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
106 AM CDT SUN APR 1 2012
THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
KNOX COUNTY IN WEST CENTRAL ILLINOIS...
* UNTIL 200 AM CDT.
* AT 104 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL.
THIS STORM WAS LOCATED NEAR NEW WINDSOR...OR 14 MILES EAST OF
ALEDO...AND MOVING SOUTHEAST AT 20 MPH.
* LOCATIONS IMPACTED INCLUDE...
GALESBURG...RIO...WATAGA...ONEIDA...ALTONA...KNOXVILLE...
VICTORIA...GILSON...WILLIAMSFIELD...MAQUON...HENDERSON...SNAKE DEN
HOLLOW AND DAHINDA.
THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 34 AND 63.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4115 9015 4114 8999 4094 9000 4075 9021
4096 9045 4115 9045 4116 9044 4116 9019
TIME...MOT...LOC 0606Z 301DEG 17KT 4116 9047
WIND...HAIL <50MPH 1.50IN
$$
SMITH3 follow-up statements
330
WWUS53 KILX 010621
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
121 AM CDT SUN APR 1 2012
ILC095-010700-
/O.CON.KILX.SV.W.0036.000000T0000Z-120401T0700Z/
KNOX IL-
121 AM CDT SUN APR 1 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN KNOX
COUNTY UNTIL 200 AM CDT...
AT 118 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL.
THIS STORM WAS LOCATED NEAR RIO...OR 14 MILES NORTH OF GALESBURG...
MOVING SOUTHEAST AT 20 MPH.
LOCATIONS IMPACTED INCLUDE...
GALESBURG...RIO...WATAGA...ONEIDA...ALTONA...VICTORIA...
HENDERSON...SNAKE DEN HOLLOW AND DAHINDA.
THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 34 AND 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN LINCOLN.
&&
LAT...LON 4115 9015 4114 8999 4094 9000 4092 9016
4096 9045 4115 9045 4116 9044 4116 9019
TIME...MOT...LOC 0621Z 301DEG 17KT 4114 9042
WIND...HAIL <50MPH 1.50IN
$$
SMITH901
WWUS53 KILX 010640
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
140 AM CDT SUN APR 1 2012
ILC095-010700-
/O.CON.KILX.SV.W.0036.000000T0000Z-120401T0700Z/
KNOX IL-
140 AM CDT SUN APR 1 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN KNOX
COUNTY UNTIL 200 AM CDT...
AT 130 AM CDT...A NATIONAL WEATHER SERVICE TRAINED SPOTTER REPORTED
GOLF BALL SIZE HAIL IN RIO. THIS DANGEROUS STORM WAS MOVING
SOUTHEAST AT 20 MPH.
LOCATIONS IMPACTED INCLUDE...
GALESBURG...WATAGA...ONEIDA...ALTONA...VICTORIA...HENDERSON...SNAKE
DEN HOLLOW AND DAHINDA.
THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 34 AND 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN LINCOLN.
&&
LAT...LON 4115 9015 4114 8999 4094 9000 4092 9016
4096 9045 4115 9045 4116 9044 4116 9019
TIME...MOT...LOC 0636Z 301DEG 17KT 4110 9034
WIND...HAIL <50MPH 1.75IN
$$
SMITH803
WWUS53 KILX 010653
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
153 AM CDT SUN APR 1 2012
ILC095-010700-
/O.CON.KILX.SV.W.0036.000000T0000Z-120401T0700Z/
KNOX IL-
153 AM CDT SUN APR 1 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN KNOX
COUNTY UNTIL 200 AM CDT...
AT 150 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL. THIS
STORM WAS LOCATED NEAR WATAGA...OR 9 MILES NORTHEAST OF GALESBURG...
MOVING SOUTHEAST AT 20 MPH.
LOCATIONS IMPACTED INCLUDE...
WATAGA...ONEIDA...ALTONA...VICTORIA...SNAKE DEN HOLLOW AND DAHINDA.
THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 36 AND 46.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN LINCOLN.
&&
LAT...LON 4099 9038 4110 9039 4113 9037 4114 9020
4114 9014 4114 8999 4094 9000 4092 9016
4092 9017
TIME...MOT...LOC 0652Z 304DEG 16KT 4106 9029
WIND...HAIL <50MPH 1.75IN
$$
SMITHThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 1:59 AM CDT | Severe Thunderstorm Warning | ILX | Knox | 46 min |
| Apr 1, 2:20 AM CDT | Severe Thunderstorm Warning | ILX | Peoria, Stark | 55 min |
| Apr 1, 2:42 AM CDT | Special Weather Statement | ILX | Tazewell | 63 min |
| Apr 1, 2:48 AM CDT | Severe Thunderstorm Warning | ILX | Peoria, Tazewell | 57 min |
| Apr 1, 3:15 AM CDT | Severe Thunderstorm Warning | ILX | Peoria, Woodford | 30 min |
| Apr 1, 3:40 AM CDT | Severe Thunderstorm Warning | ILX | Tazewell, Woodford | 39 min |
| Apr 1, 3:43 AM CDT | Severe Thunderstorm Warning | ILX | McLean, Tazewell | 47 min |
| Apr 1, 4:22 AM CDT | Severe Thunderstorm Warning | ILX | McLean, Woodford | 38 min |
| Apr 1, 8:23 AM CDT | Special Weather Statement | ILX | Vermilion | 37 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.