Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 4, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Mar 10, 1990, 8:31 AM CST for Muscatine County, Scott County, Iowa; Rock Island County, Illinois. It was in force for 29 min.
The area
The counties it named.
The facts
- Issued
- Mar 10, 1990, 8:31 AM CST (14:31 UTC)
- Expired
- Mar 10, 1990, 9:00 AM CST
- In force
- 29 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
Counties Muscatine County, IA, 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 12:00Z, 2.5 hours before the alert went out and 393 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
- 627 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 123 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 KMLI 101431
SVRMLI
IAC163-139-ILC161-101500-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOLINE IL
831 AM CST SAT MAR 10 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 900 AM CST FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE EXTREME EAST PART OF IOWA
SOUTHERN SCOTT...EASTERN MUSCATINE...
IN THE NORTHWEST PART OF ILLINOIS
WESTERN ROCK-ISLAND...
AT 815 AM ONE AND ONE HALF INCH HAIL WAS REPORTED AT THE
MUSCATINE AIRPORT NEAR MUSCATINE...25 MILES WEST OF MOLINE.
THE THUNDERSTORM WAS MOVING EAST AT 30 MILES AN HOUR.
SOME CITIES/TOWNS IN THE PATH OF THIS STORM INCLUDE... MUSCATINE
AND THE QUAD CITIES.
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
FOBERTWhat 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, Mar 10, 6:23 AM CST, 2 hours 8 minutes before
IAZ008-WIZ018-ILZ001-101500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 620 AM CST SAT MAR 10 1990 ...AREAS OF DENSE FOG IN AND AROUND THE TRI-STATE... DENSE FOG CONTINUED IN AND AROUND THE TRI-STATE AREA THIS MORNING WITH THE VISIBILITY AT DUBUQUE AIRPORT 1/8 MILE AND MANY AREAS IN THE TRI-STATES REPORTING VISIBILITY NEAR ZERO. THE FOG SHOULD START LIFTING BY MID MORNING AROUND DUBUQUE AND THE TRI-STATE. PERSONS TRAVELINNG IN THE TRI-STATE AREA SHOULD BE ALERT FOR THIS FOG...DRIVE CAREFULLY WITH YOUR LOW BEAMS ON...AND LEAVE FOR YOUR DESTINATION EARLIER THAN NORMAL. DEROY
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 9, 11:09 PM CST | Severe Thunderstorm Warning | DVN | Jones | 36 min |
| Mar 10, 12:17 AM CST | Severe Thunderstorm Warning | DVN | Muscatine | 43 min |
| Mar 10, 1:02 AM CST | Severe Thunderstorm Warning | DVN | Scott | 43 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1990Severe Thunderstorm Warnings in Illinois, 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.