Alert archive / Illinois / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 149, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 27, 1996, 4:56 AM CDT for Randolph County, Saint Clair County, Illinois. It was in force for 49 min. 3 reports 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, 4:56 AM CDT (09:56 UTC)
- Expired
- May 27, 1996, 5:45 AM CDT
- In force
- 49 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Randolph County, IL, Saint Clair County, IL
The radar
The St Louis radar (KLSX), 85 km from the middle of the area, began a volume at 09:59 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, 5:19 AM CDT | Thunderstorm Wind 55 | Lenzburg, IL | |
| May 27, 5:21 AM CDT | Hail 0.75 | Red Bud, IL | |
| May 27, 5:44 AM CDT | Thunderstorm Wind 58 | Marissa, 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
Nashville Metro, TN (KBNA), launched 00:00Z, 9.9 hours before the alert went out and 375 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
- 1644 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 1109 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 270958 SVRSTL ILC157-163-271045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 456 AM CDT MON MAY 27 1996 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ILLINOIS ...RANDOLPH COUNTY...ST. CLAIR COUNTY AT 5 AM...WEATHER SERVICE RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM MILLSTADT TO MAEYSTOWN MOVING TO THE EAST AT 30 MPH. THESE STORMS WERE PRODUCING HEAVY RAIN AND STRONG AND GUSTY DAMANGING WINDS. TOWNS IN THE PATH OF THESE STORMS ARE FREEBURG...NEW ATHENS...REDBUD...AND SPARTA. THIS IS A DANGEROUS STORM! BE PREPARED FOR DAMAGING WINDS...HAIL AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, May 27, 3:47 AM CDT, 1 hour 9 minutes before
MOZ041-048-271045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 345 AM CDT MON MAY 27 1996 ...TORNADO WATCH #454 HAS BEEN CANCELLED... THE TORNADO WATCH THAT WAS VALID UNTIL 5AM FOR PART OF CENTRAL MISSOURI HAS BEEN CANCELLED. THE LINE OF SEVERE THUNDERSTORMS HAS MOVED WELL EAST OF THE AREA. NO ADDITIONAL SEVERE WEATHER IS EXPECTED IN CENTRAL MISSOURI TONIGHT. AMS
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, 3:33 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey | 42 min |
| May 27, 4:39 AM CDT | Severe Thunderstorm Warning | LSX | Monroe | 51 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.