Alert archive / Iowa / Special Weather Statements in 2016

Special Weather Statement, NWS Quad Cities, IA

June 26, 2016Benton County, Iowa

NWS Quad Cities, IA issued this special weather statement at Jun 26, 2016, 2:08 AM CDT for Benton County, Iowa. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 26, 2016, 2:08 AM CDT (07:08 UTC)
Expired
Jun 26, 2016, 2:45 AM CDT
In force
37 min
Issued by
NWS Quad Cities, IA

County Benton County, IA

The radar

The Quad Cities radar (KDVN), 132 km from the middle of the area, began a volume at 07:11 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 nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 7.1 hours before the alert went out and 138 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, Davenport, at 00:00Z on 2016-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1640 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2016-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.1939Sfc1 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
1640 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1475 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.5

Open this sounding in Storm Lab

The text

As transmitted.

959 
WWUS83 KDVN 260708
SPSDVN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
208 AM CDT SUN JUN 26 2016
 
IAC011-095-260745-
IOWA-BENTON-
208 AM CDT SUN JUN 26 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT PORTIONS OF IOWA AND
BENTON COUNTIES...

AT 207 AM CDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEAR GARRISON TO KEYSTONE TO NEAR BELLE PLAINE...AND
MOVING EAST AT 40 MPH.

WINDS IN EXCESS OF 40 MPH ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
VINTON...MARENGO...BELLE PLAINE...ATKINS...SHELLSBURG...NEWHALL...
BLAIRSTOWN...VAN HORNE...KEYSTONE...NORWAY...GARRISON...LUZERNE...
BENTON COUNTY FAIRGROUNDS...HOEFLE-DULIN PARK...HANNEN LAKE PARK...
KOSZTA...IOWA COUNTY FAIRGROUNDS...BENTON CITY PARK AND WATKINS.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 4213 9230 4217 9206 4217 9183 4201 9183
      4181 9190 4177 9230
TIME...MOT...LOC 0707Z 260DEG 34KT 4211 9222 4200 9221 4184 9229 
$$

UTTECH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 2:37 AM CDTSpecial Weather StatementDVNJones23 min
Jun 26, 2:43 AM CDTSpecial Weather StatementDVNBenton, Linn47 min
Jun 26, 3:01 AM CDTSpecial Weather StatementDVNCedar, Delaware, Dubuque, Jones29 min
Jun 26, 3:32 AM CDTSpecial Weather StatementDVNBenton, Buchanan, Cedar, Delaware, Dubuque, Iowa and 8 more43 min
Jun 26, 4:19 AM CDTSpecial Weather StatementDVNCedar, Clinton, Iowa, Jackson, Jefferson, Johnson and 7 more41 min
Jun 26, 9:50 AM CDTRiver Flood WarningDVNClinton, Scott4 days

Nearby

Special Weather Statements in Iowa, 2016Every special weather statement in 2016

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.