Alert archive / Illinois / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 3, NWS Quad Cities, IA

March 10, 1990Rock Island County, Illinois; Scott County, Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at Mar 10, 1990, 1:02 AM CST for Rock Island County, Illinois; Scott County, Iowa. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Mar 10, 1990, 1:02 AM CST (07:02 UTC)
Expired
Mar 10, 1990, 1:45 AM CST
In force
43 min
Issued by
NWS Quad Cities, IA
Area
Whole counties

Counties Scott County, IA, Rock Island County, IL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 7.0 hours before the alert went out and 384 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, Green Bay/Straub, WI at 00:00Z on 1990-03-10Temperature 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, Green Bay/Straub, WI at 00:00Z on 1990-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 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
567 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
212 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMLI 100702
SVRMLI
IAC163-ILC161-100745-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE MOLINE IL
102 AM CST SAT MAR 10 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 145 AM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE EXTREME EAST PART OF IOWA
      SOUTHERN SCOTT...

   IN THE NORTHWEST PART OF ILLINOIS
      SOUTHERN ROCK-ISLAND...

AT 100 AM  NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM OVER LOWER ROCK ISLAND COUNTY FROM ANDALUSIA..
10 MILES SOUTHWEST OF MOLINE  TO BUFFALO PRAIRE ..20 MILES
SOUTHWEST OF MOLINE.

THE THUNDERSTORMS WERE MOVING EAST AT 30 MPH.

SOME CITIES/TOWNS IN THE PATH OF THIS STORM INCLUDE... THE QUAD
CITYS, TAYLOR RIDGE, REYNOLDS.

FOR YOUR PROTECTION GO TO A SAFE PLACE IMMEDIATELY.  STAY INDOORS
AND AVOID WINDOWS.  IF OUTDOORS...DO NOT STAND UNDER A TREE OR IN
OPEN AREAS SUCH AS A FIELD.

A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WIND OF 60 MPH OR MORE...
LARGE HAIL...FREQUENT DANGEROUS LIGHTNING AND HEAVY RAIN.

IF TIME PERMITS...ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY
YOUR REPORT OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.

ATTN ISP 7 AND 1

LAGUE

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 10, 12:17 AM CSTSevere Thunderstorm WarningDVNRock Island43 min
Mar 10, 8:31 AM CSTSevere Thunderstorm WarningDVNRock Island29 min
Mar 9, 11:09 PM CSTSevere Thunderstorm WarningDVNJones36 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1990Severe Thunderstorm Warnings in Iowa, 1990Every severe thunderstorm warning in 1990

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.