Alert archive / Illinois / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 147, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 27, 1996, 3:33 AM CDT for Calhoun County, Greene County, Jersey County, Illinois. It was in force for 42 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 27, 1996, 3:33 AM CDT (08:33 UTC)
- Expired
- May 27, 1996, 4:15 AM CDT
- In force
- 42 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Calhoun County, IL, Greene County, IL, Jersey County, IL
The radar
The St Louis radar (KLSX), 59 km from the middle of the area, began a volume at 08:36 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 |
|---|---|---|---|
| May 27, 4:00 AM CDT | Thunderstorm Wind 54 | Jerseyville, IL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 8.6 hours before the alert went out and 269 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
- 632 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 373 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 270835 SVRSTL ILC013-061-083-270915- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 333 AM CDT MON MAY 27 1996 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 415 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ILLINOIS ...CALHOUN COUNTY...GREENE COUNTY...JERSEY COUNTY AT 330 AM...WEATHER SERVICE RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS MOVING INTO THE AREA. THE STORMS WERE MOVING TO THE EAST AT 30 MPH ACCOMPANIED BY HEAVY RAIN...STRONG AND GUSTY DAMANGING WINDS AND DANGEROUS LIGHTNING. STORMS IN THE PATH OF THESE STORMS ARE HARDIN...CARROLLTON...JERSEYVILLE AND~ GRAFTON. THIS IS A DANGEROUS STORM! BE PREPARED FOR DAMAGING WINDS...HAIL AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS.
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 2:07 AM CDT | Severe Thunderstorm Warning | LSX | Pike | 53 min |
| May 27, 2:07 AM CDT | Severe Thunderstorm Warning | LSX | Adams | 53 min |
| May 27, 2:30 AM CDT | Severe Thunderstorm Warning | LSX | Brown | 30 min |
| May 27, 4:39 AM CDT | Severe Thunderstorm Warning | LSX | Monroe | 51 min |
| May 27, 4:56 AM CDT | Severe Thunderstorm Warning | LSX | Randolph, Saint Clair | 49 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1996Every severe thunderstorm warning in 1996
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.