Alert archive / Iowa / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 76, NWS Quad Cities, IA

May 30, 2000Linn County, Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at May 30, 2000, 10:58 PM CDT for Linn County, Iowa. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: May 30, 2000, 10:58 PM CDT (03:58 UTC)
Expired: May 30, 2000, 11:30 PM CDT
In force: 32 min
Issued by: NWS Quad Cities, IA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Linn County, IA

The radar

The Quad Cities radar (KDVN), 102 km from the middle of the area, began a volume at 03:58 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 30, 7:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.0 hours before the alert went out and 107 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: 645 J/kg
Mixed-layer CIN: -385 J/kg
Mixed-layer LCL: 1615 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 316 m²/s²
0-3 km storm-relative helicity: 336 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

374 
WUUS53 KDVN 310359
SVRMLI
IAC113-310430-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1058 PM CDT TUE MAY 30 2000

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LINN COUNTY IN EAST CENTRAL IOWA

* UNTIL 1130 PM CDT

* AT 1053 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS OVER
  ROBINS...OR 8 MILES NORTH OF CEDAR RAPIDS...MOVING EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM IS EXPECTED TO BE NEAR...
   MARION NOW.
   PARALTA BY 1110 PM CDT.
   SPRINGVILLE BY 1115 PM CDT.

THIS SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING HAIL UP TO 1 INCH IN
DIAMETER AND WINDS IN EXCESS OF 55 MPH. TAKE COVER IN A STURDY
STRUCTURE UNTIL THE STORM PASSES.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT WEDNESDAY MORNING
FOR EASTERN IOWA.

LAT...LON 4221 9177 4204 9181 4187 9138 4217 9138

LRE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 9:43 PM CDT	Severe Thunderstorm Warning	DVN	Jones, Linn	32 min
May 30, 9:50 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan	25 min
May 30, 10:21 PM CDT	Severe Thunderstorm Warning	DVN	Linn	24 min
May 31, 12:22 AM CDT	Severe Thunderstorm Warning	DVN	Johnson, Louisa, Muscatine, Washington	28 min
May 31, 1:11 AM CDT	Severe Thunderstorm Warning	DVN	Louisa	34 min
May 31, 1:25 AM CDT	Flash Flood Warning	DVN	Johnson, Louisa, Washington	3 hr
May 31, 4:25 AM CDT	Flash Flood Warning	DVN	Johnson, Louisa, Muscatine, Washington	3 hr
May 31, 10:34 AM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan	41 min
May 31, 11:02 AM CDT	Severe Thunderstorm Warning	DVN	Linn	43 min
May 31, 11:14 AM CDT	Severe Thunderstorm Warning	DVN	Delaware	46 min
May 31, 11:24 AM CDT	Tornado Warning	DVN	Jones, Linn	36 min
May 31, 11:48 AM CDT	Tornado Warning	DVN	Jones	27 min
May 31, 12:29 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	46 min
May 31, 3:31 PM CDT	Flash Flood Warning	DVN	Buchanan, Delaware	4 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2000 Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.