Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 20, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 27, 1990, 7:49 PM CDT for Scott County, Iowa; Rock Island County, Illinois. It was in force for 56 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
- Jun 27, 1990, 7:49 PM CDT (00:49 UTC)
- Expired
- Jun 27, 1990, 8:45 PM CDT
- In force
- 56 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 27, 7:50 PM CDT | Thunderstorm Wind 52 | Rock Island, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.8 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1796 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 109 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 280049
SVRMLI
IAC163-ILC161-131-280145-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOLINE IL
749 PM CDT WED JUN 27 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 845 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE EXTREME EAST PART OF IOWA
SCOTT...
IN THE NORTHWEST PART OF ILLINOIS
ROCK-ISLAND...MERCER...
AT 740 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS 10 MILES
NORTHWEST OF THE QUAD CITIES MOVING SOUTHEAST AT 35 MILES AN HOUR.
DAMAGING WINDS OF 60 MILES AN HOUR AND GREATER HAVE BEEN REPORTED
WITH THESE THUNDERSTORMS.
SOME CITIES/TOWNS IN THE PATH OF THIS STORM INCLUDE... WALCOTT...
BUFFALO..QUAD CITIES...NEW BOSTON...ALEDO.
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, Jun 27, 5:21 PM CDT, 2 hours 28 minutes before
ILZ004-IAZ015-272315- SPECIAL WEATHER STATEMENT...CORRECTED TO ADD WORD "RAIN"... NATIONAL WEATHER SERVICE MOLINE IL 510 PM CDT WED JUN 27 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 PM CDT... THUNDERSTORMS CONTINUED TO ROLL ACROSS EAST CENTRAL IOWA AND NORTHWEST ILLINOIS THIS AFTERNOON. AT 5 PM CDT A THUNDERSTORM WAS 15 MILES NORTHEAST OF THE QUAD CITIES MOVING SOUTHEAST AT 10 MILES AN HOUR. THIS THUNDERSTORM IN THE PAST HAS PRODUCED BRIEF HEAVY RAIN...SMALL HAIL AND BRIEF GUSTY WIND. A SECOND THUNDERSTORM WAS JUST BRUSHING THE WEST BORDER OF CEDAR COUNTY IN EAST CENTRAL IOWA...OR ABOUT 55 MILES NORTHWEST OF THE QUAD CITIES. OTHER SHOWERS WERE OVER MUSCATINE IOWA AND SOUTH OF MUSCATINE...OR 25 MILES SOUTHWEST OF MOLINE ILLINOIS. THESE SHOWERS AND THUNDERSTORMS WERE ALSO MOVING SOUTHEAST AT 10 MILES AN HOUR. MEYER
Special weather statement, Jun 27, 5:54 PM CDT, 1 hour 55 minutes before
IAZ008-WIZ018-ILZ001-280000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 645 PM CDT WED JUN 27 1990 ...SEVERE THUNDERSTORM WATCH TIL 8PM FOR IOWA COUNTIES IN THE TRI-STATE AREA... AT 640 PM CDT...SHOWERS AND A FEW THUNDERSTORMS WERE LOCATED OVER THE WESTERN PART OF OUR TRI-STATE AREA. THE LEADING EDGE OF THE RAIN WAS BY GUTTENBURG IN CLAYTON COUNTY...30 MILES NORTHWEST OF DUBUQUE...AND EXTENDED SOUTH TO OXFORD JUNCTION...40 MILES SOUTHWEST OF DUBUQUE. A COUPLE OF STRONGER STORMS WERE LOCATED BETWEEN ANAMOSA AND MONTICELLO IN JONES COUNTY...25 MILES SOUTHWEST OF DUBUQUE. MOVEMENT WAS SOUTHEAST AT 20 MILES AN HOUR. SEVERE THUNDERSTORM WATCH FOR WISCONSIN COUNTIES PHAS BEEN CANCELLED. PERIODS OF HEAVY RAIN...WINDS OF 45 MILES AN HOUR...AND SOME PEA SIZE HAIL HAS BEEN REPORTED WITH THIS AREA OF RAIN AS IT MOVED SOUTH. IF THREATENING WEATHER IS SIGHTED...TAKE COVER IMMEDIATELY. KOWALSKI
Special weather statement, Jun 27, 6:17 PM CDT, 1 hour 32 minutes before
ILZ004-IAZ015-280015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 610 PM CDT WED JUN 27 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 PM CDT... THUNDERSTORMS CONTINUED ACROSS EAST CENTRAL IOWA AND NORTHWEST ILLINOIS THIS EVENING. AT 600 PM CDT THUNDERSTORMS WERE 20 MILES WEST AND SOUTH OF THE QUAD CITIES. THESE THUNDERSTORMS WERE MOVING SOUTH AT 10 MILES AN HOUR. BECAUSE OF THE SLOW MOVEMENT...HEAVY RAIN PRODUCING SOME STREET AND LOW LAND FLOODING CAN BE EXPECTED. IF LIVE NEAR FLOOD PRONE AREAS BE ON THE LOOKOUT FOR RISING WATER. NEVER DRIVE THROUGH ROADS COVERED WITH WATER. STRONGER THUNDERSTORMS IN NORTHEAST IOWA WERE APPROACHING CEDAR AND CLINTON COUNTIES OF EAST CENTRAL IOWA. THESES THUNDERSTORMS HAVE HAD A PAST HISTORY OF PRODUCING LARGE HAIL AND WINDS STRONG ENOUGH TO BLOW DOWN TREES. IF YOU LIVE IN THE ABOVE MENTIONED COUNTIES...BE PREPARED FOR THESE POTENTIALLY DANGEROUS STORMS TO MOVE INTO YOUR AREA AROUND 700 PM CDT. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR. AT 530 PM CDT AN OBSERVER IN MOLINE ILLINOIS REPORTED 1.40 INCH OF RAINFALL FROM THE EARLIER THUNDERSTORMS THAT MOVE THROUGH THE QUAD CITIES. IF THREATENING WEATHER APPROACHES WHERE YOU LIVE THIS EVENING...BE PREPARED TO SEEK SHELTER. MEYER
Special weather statement, Jun 27, 6:32 PM CDT, 1 hour 17 minutes before
IAZ008-280100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 630 PM CDT WED JUN 27 1990 ...SEVERE THUNDERSTORM WATCH TIL 8PM FOR IOWA COUNTIES IN THE TRI-STATE AREA... AT 625 PM CDT...STRONG THUNDERSTORMS WERE OCCURRING NEAR ANAMOSA IN JONES COUNTY...40 MILES SOUTHWEST OF DUBUQUE. MOVEMENT WAS SOUTHEAST AT 20 MILES AN HOUR...AND WILL BE AFFECTING THE CENTRAL AND SOUTHERN PART OF JONES COUNTY FOR THE NEXT HOUR OR SO. WINDS OF 40 TO 50 MILES AN HOUR...ALONG WITH HEAVY RAIN AND A LOT OF LIGHTNING WAS REPORTED IN ANAMOSA. ELSEWHERE...RAIN CONTINUES OVER MUCH OF EASTERN IOWA...WITH RAIN TAPERING OFF OVER THE WESTERN TRI-STATE AREA. REMEMBER...A SEVERE THUNDERSTORM WAT|CH IS IN EFFECT UNTIL 800 PM CDT AND A SEVERE STORMS IS POSSIBLE. IF THREATENING WEATHER IS SIGHTED...TAKE COVER IMMEDIATELY...AND IF TIME PERMITS...CALL YOUR REPORT TO THE NEAREST LAW ENFORCEMENT AGENCY. KOWALSKI
Special weather statement, Jun 27, 7:10 PM CDT, 39 minutes before
IAZ008-280100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 710 PM CDT WED JUN 27 1990 ...SEVERE THUNDERSTORM WATCH TIL 8PM FOR IOWA COUNTIES IN THE TRI-STATE AREA... AT 705 PM CDT...RADAR INDICATED A FEW THUNDERSTORMS IN JACKSON COUNTY BETWEEN BELLEVUE AND SPRING BROOK 25 MILES SOUTHEAST OF DUBUQUE MOVING SOUTHEAST AT 30 MILES AN HOUR. PERSONS IN THE SOUTHERN PART OF JACKSON COUNTY MAY SEE WIND GUSTS OF 40 TO 50 MILES AN HOUR...ALONG WITH HEAVY RAIN...FREQUENT LIGHTNING AND SOME PEA SIZE HAIL AS THE STORMS PASS THROUGH. ELSEWHERE...THUNDERSHOWERS WERE OCCURRING IN DUBUQUE AND SOUTH...WITH THE STRONGEST OF THE STORMS SOUTH OF OUR TRI-STATE AREA. REMEMBER...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 800 PM CDT AND A SEVERE STORM IS POSSIBLE. IF THREATENING WEATHER IS SIGHTED...TAKE COVER IMMEDIATELY...AND IF TIME PERMITS...CALL YOUR REPORT TO THE NEAREST LAW ENFORCEMENT AGENCY. KOWALSKI
Special weather statement, Jun 27, 7:20 PM CDT, 29 minutes before
IAZ008-280100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 720 PM CDT WED JUN 27 1990 THE SEVERE THUNDERSTORM WATCH IS CANCELLED FOR THE ENTIRE TRI-STATE. THE STRONGER STORMS HAVE MOVED SOUTH OF THE TRI-STATE AREA AND ONLY THUNDERSHOWERS AND RAINSHOWERS WERE OCCURRING FROM DUBUQUE SOUTH. AGAIN...THE SEVERE THUNDERSTORM WATCH IS CANCELLED. KOWALSKI
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 7:28 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine | 62 min |
| Jun 27, 7:49 PM CDT | Severe Thunderstorm Warning | DVN | Mercer | 56 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.