Alert archive / Illinois / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 4, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Feb 20, 2016, 7:30 PM CST for Randolph County, Illinois. It was in force for 30 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
- Feb 20, 2016, 7:30 PM CST (01:30 UTC)
- Expired
- Feb 20, 2016, 8:00 PM CST
- In force
- 30 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Randolph County, IL
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.5 hours before the alert went out and 250 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
- 2731 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
503 WUUS53 KLSX 210130 SVRLSX ILC157-210200- /O.NEW.KLSX.SV.W.0004.160221T0130Z-160221T0200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 730 PM CST SAT FEB 20 2016 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN RANDOLPH COUNTY IN SOUTHWESTERN ILLINOIS... * UNTIL 800 PM CST * AT 729 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR BALDWIN... MOVING EAST AT 30 MPH. HAZARD...QUARTER SIZE HAIL. SOURCE...RADAR INDICATED. IMPACT...DAMAGE TO VEHICLES IS EXPECTED. * LOCATIONS IMPACTED INCLUDE... SPARTA...STEELEVILLE...PERCY...COULTERVILLE...TILDEN...BALDWIN... EDEN...PRESTON...BLAIR...HOUSTON AND WALSH. PRECAUTIONARY/PREPAREDNESS ACTIONS... FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING. && LAT...LON 3803 8992 3821 8990 3822 8959 3798 8960 TIME...MOT...LOC 0129Z 275DEG 26KT 3812 8982 HAIL...1.00IN WIND...<50MPH $$ CARNEY
1 follow-up statement
329
WWUS53 KLSX 210153
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
753 PM CST SAT FEB 20 2016
ILC157-210203-
/O.EXP.KLSX.SV.W.0004.000000T0000Z-160221T0200Z/
RANDOLPH IL-
753 PM CST SAT FEB 20 2016
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN RANDOLPH COUNTY
WILL EXPIRE AT 800 PM CST...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER SMALL HAIL
AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 3803 8992 3821 8990 3822 8959 3798 8960
TIME...MOT...LOC 0152Z 275DEG 26KT 3812 8982
$$
CARNEYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 6:46 PM CST | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair | 44 min |
| Feb 20, 9:07 PM CST | Areal Flood Advisory | LSX | Monroe | 4 hr |
| Feb 20, 9:22 PM CST | Flash Flood Warning | LSX | Monroe, Saint Clair | 4 hr |
| Feb 20, 11:11 PM CST | Areal Flood Advisory | LSX | Bond | 4 hr |
Nearby
Severe Thunderstorm Warnings in Illinois, 2016Every severe thunderstorm warning in 2016
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.