Alert archive / Illinois / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 21, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at May 8, 2009, 8:55 PM CDT for Stark County, Illinois. It was in force for 35 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 8, 2009, 8:55 PM CDT (01:55 UTC)
- Expired
- May 8, 2009, 9:30 PM CDT
- In force
- 35 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
County Stark County, IL
The radar
The Quad Cities radar (KDVN), 84 km from the middle of the area, began a volume at 01:55 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 8, 6:10 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.9 hours before the alert went out and 79 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
- 354 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1505 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS53 KILX 090155
SVRILX
ILC175-090230-
/O.NEW.KILX.SV.W.0021.090509T0155Z-090509T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
855 PM CDT FRI MAY 8 2009
THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
STARK COUNTY IN NORTH CENTRAL ILLINOIS...
* UNTIL 930 PM CDT.
* AT 855 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 LA
FAYETTE...OR ABOUT 9 MILES SOUTHWEST OF KEWANEE...AND WAS MOVING
EAST AT 50 MPH.
* LOCATIONS IMPACTED INCLUDE...
TOULON...
ELMIRA...
WYOMING...
OSCEOLA...
CASTLETON...
BRADFORD...
ANOTHER LOCATION IN THIS WARNING IS...WEST JERSEY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
&&
LAT...LON 4124 8964 4118 8965 4098 8966 4099 8999
4115 8999 4116 8988 4124 8988
TIME...MOT...LOC 0155Z 280DEG 44KT 4112 8995
$$
CHS2 follow-up statements
000
WWUS53 KILX 090218
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
918 PM CDT FRI MAY 8 2009
ILC175-090230-
/O.CON.KILX.SV.W.0021.000000T0000Z-090509T0230Z/
STARK IL-
918 PM CDT FRI MAY 8 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR STARK COUNTY...
AT 917 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
NEAR ELMIRA...OR 10 MILES SOUTHEAST OF KEWANEE...MOVING EAST AT 40
MPH.
LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
CASTLETON...BRADFORD AND LOMBARDVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
&&
LAT...LON 4124 8964 4118 8965 4098 8966 4099 8999
4115 8999 4116 8988 4124 8988
TIME...MOT...LOC 0218Z 276DEG 35KT 4114 8978
$$
CHS000
WWUS53 KILX 090229
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
929 PM CDT FRI MAY 8 2009
ILC175-090238-
/O.EXP.KILX.SV.W.0021.000000T0000Z-090509T0230Z/
STARK IL-
929 PM CDT FRI MAY 8 2009
...THE SEVERE THUNDERSTORM WARNING FOR STARK COUNTY EXPIRES AT 930 PM
CDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER
APPEARED TO BE SEVERE.
A SEPARATE SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE
SOUTHERN PART OF THE COUNTY UNTIL 1000 PM CDT.
LAT...LON 4124 8964 4118 8965 4098 8966 4099 8999
4115 8999 4116 8988 4124 8988
TIME...MOT...LOC 0228Z 276DEG 35KT 4112 8965
$$
CHSThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 8:29 PM CDT | Severe Thunderstorm Warning | ILX | Knox | 46 min |
| May 8, 9:15 PM CDT | Severe Thunderstorm Warning | ILX | Knox, Peoria, Stark | 31 min |
| May 8, 9:44 PM CDT | River Flood Warning | ILX | Clay, Richland | 3 days |
Nearby
Severe Thunderstorm Warnings in Illinois, 2009Every severe thunderstorm warning in 2009
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.