Alert archive / Illinois / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 4, NWS Quad Cities, IA

April 9, 1995Rock Island County, Whiteside County, Illinois; Clinton County, Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at Apr 9, 1995, 12:21 AM CDT for Rock Island County, Whiteside County, Illinois; Clinton County, Iowa. It was in force for 69 min.

The area

The counties it named.

The facts

Issued
Apr 9, 1995, 12:21 AM CDT (05:21 UTC)
Expired
Apr 9, 1995, 1:30 AM CDT
In force
69 min
Issued by
NWS Quad Cities, IA
Area
Whole counties

Counties Clinton County, IA, Rock Island County, IL, Whiteside County, IL

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 5.4 hours before the alert went out and 17 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.

Skew-T log-pSkew-T log-p diagram, Davenport, at 00:00Z on 1995-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 1995-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
768 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
295 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMLI 090521 RRA
SVRMLI
IAC045-163-ILC161-195-090630-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1221 AM CDT SUN APR 9 1995
 
THE NATIONAL WEATHER SERVICE IN QUAD CITIES IA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  130 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL IOWA
 
   ...EASTERN CLINTON COUNTY...EASTERN SCOTT COUNTY
 
 
IN NORTHWEST ILLINOIS
 
   ...NORTHERN ROCK ISLAND COUNTY...WESTERN WHITESIDE COUNTY
 
AT 1217 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 7 MILES
OF EAST ELDRIDGE AND WAS MOVING TO THE NORTHEAST AT 20 MPH. THE STORM
WILL REACH PRINCETON BY 1237 AM AND ALBANY AND CAMANCHE BY 100 AM.
 
THIS STORM WILL PRODUCE LARGE HAIL. IF YOU LIVE IN THE PATH OF THIS
STORM TAKE SAFE SHELTER NOW!!!
 
 
 
 
BERG

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 9, 12:25 AM CDTSevere Thunderstorm WarningDVNMercer, Rock Island50 min
Apr 9, 1:06 AM CDTSevere Thunderstorm WarningDVNRock Island69 min
Apr 9, 4:21 AM CDTFlash Flood WarningDVNWhiteside3 hr
Apr 9, 12:21 AM CDTSevere Thunderstorm WarningDVNScott69 min
Apr 9, 3:02 AM CDTFlash Flood WarningDVNClinton, Jackson, Jones3 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 1995Severe Thunderstorm Warnings in Iowa, 1995Every severe thunderstorm warning in 1995

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.