Alert archive / Iowa / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 3, NWS Quad Cities, IA

March 9, 20024 counties in Iowa; Clark County, Missouri

NWS Quad Cities, IA issued this severe thunderstorm warning at Mar 9, 2002, 1:20 AM CST for 4 counties in Iowa; Clark County, Missouri. It was in force for 70 min. 7 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 9, 2002, 1:20 AM CST (07:20 UTC)
Expired: Mar 9, 2002, 2:30 AM CST
In force: 70 min
Issued by: NWS Quad Cities, IA
Area: Counties, with a storm outline in the text

Counties Henry County, IA, Johnson County, IA, Lee County, IA, Washington County, IA, Clark County, MO

The radar

The Quad Cities radar (KDVN), 98 km from the middle of the area, began a volume at 07:22 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
Mar 9, 1:45 AM CST	Thunderstorm Wind 61 E	Wayland, MO	Top of grain bin blown off.
Mar 9, 1:50 AM CST	Thunderstorm Wind 61 E	Salem, IA	Barn destroyed.
Mar 9, 1:50 AM CST	Thunderstorm Wind 61 E	Salem, IA	Several large tree limbs down.
Mar 9, 1:50 AM CST	Thunderstorm Wind 57 E	Washington, IA	Tree limbs down, and shingles torn off several buildings.
Mar 9, 2:00 AM CST	Thunderstorm Wind 57 E	Ainsworth, IA	Numerous tree limbs down, and shingles torn off buildings.
Mar 9, 2:15 AM CST	Thunderstorm Wind 61 E	Donnellson, IA	Barn destroyed.
Mar 9, 2:25 AM CST	Thunderstorm Wind	Hills, IA	A property suffered heavy damage. A large sliding door to a metal building was blown down and destroyed, a fence was damaged, a semi-trailer was tipped over and moved, the tin roof on an old shed was torn off, and an empty grain elevator was tipped over and m

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 8, 11:30 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 7.3 hours before the alert went out and 105 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 184 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 1023 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 192 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KDVN 090720
SVRMLI
IAC087-103-111-183-MOC045-090830-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
117 AM CST SAT MAR 9 2002

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JOHNSON COUNTY IN EAST CENTRAL IOWA
  WASHINGTON COUNTY IN SOUTHEAST IOWA
  HENRY COUNTY IN SOUTHEAST IOWA
  LEE COUNTY IN SOUTHEAST IOWA
  CLARK COUNTY IN NORTHEAST MISSOURI

* UNTIL 230 AM CST

* AT 117 AM CST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS WITH VERY DAMAGING WINDS ALONG A LINE
  EXTENDING FROM 2 MILES SOUTH OF NORTH ENGLISH TO 3 MILES EAST OF   
  MEMPHIS...MOVING EAST NORTHEAST AT 35 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  CORALVILLE
  DONNELLSON
  IOWA CITY
  KALONA
  MOUNT PLEASANT
  NORTH LIBERTY
  RIVERSIDE
  UNIVERSITY HEIGHTS
  WASHINGTON
  WAYLAND

THIS LINE OF SEVERE THUNDERSTORMS HAS A HISTORY OF PRODUCING DAMAGE 
AND WINDS OF 60 MPH. TAKE COVER IN A STURDY STRUCTURE UNTIL THIS 
LINE OF STORMS PASS.

THESE SEVERE THUNDERSTORMS ARE ALSO PRODUCING HEAVY RAINFALL...WHICH 
MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID 
THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY
TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN THE QUAD CITIES.

LAT...LON 4183 9176 4030 9167 4029 9147 4183 9152

$$

MCCLURE

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 9, 12:37 AM CST	Severe Thunderstorm Warning	DVN	Iowa, Jefferson, Keokuk, Van Buren	68 min
Mar 9, 1:06 AM CST	Severe Thunderstorm Warning	DVN	Benton	39 min
Mar 9, 1:43 AM CST	Severe Thunderstorm Warning	DVN	Buchanan, Linn	62 min
Mar 9, 2:35 AM CST	Severe Thunderstorm Warning	DVN	Des Moines	40 min
Mar 9, 2:50 AM CST	Severe Thunderstorm Warning	DVN	Scott	40 min
Mar 9, 3:05 AM CST	Severe Thunderstorm Warning	DVN	Clinton	40 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2002 Severe Thunderstorm Warnings in Missouri, 2002 Every severe thunderstorm warning in 2002

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.