Alert archive / Iowa / Flash Flood Warnings in 2003

Flash Flood Warning 6, NWS Quad Cities, IA

July 7, 2003Jones County, Iowa

NWS Quad Cities, IA issued this flash flood warning at Jul 7, 2003, 6:15 AM CDT for Jones County, Iowa. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 7, 2003, 6:15 AM CDT (11:15 UTC)
Expired: Jul 7, 2003, 9:15 AM CDT
In force: 3 hr
Issued by: NWS Quad Cities, IA
Area: Counties, with a storm outline in the text

County Jones County, IA

The radar

The Quad Cities radar (KDVN), 76 km from the middle of the area, began a volume at 11:16 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, 11.3 hours before the alert went out and 79 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: 2676 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1259 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 157 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.9

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KDVN 071115
FFWDVN
IAC105-071415-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
615 AM CDT MON JUL 7 2003

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JONES COUNTY IN EAST CENTRAL IOWA

* UNTIL 915 AM CDT

* AT 610 AM CDT...LAW ENFORCEMENT OFFICIALS REPORTED FLASH FLOODING
  IN THE CITY OF MONTICELLO. NATIONAL WEATHER SERVICE DOPPLER RADAR
  SHOWED THUNDERSTORMS PRODUCING VERY HEAVY RAIN WERE MOVING ACROSS
  NORTHERN JONES COUNTY

* STRONG THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS JONES COUNTY 
  THROUGH 730 AM...LEADING TO VERY HIGH RAINFALL RATES AND THE 
  LIKELIHOOD OF FLASH FLOODING IN THE WARNED AREA.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES...AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

LAT...LON 4228 9092 4203 9092 4203 9134 4228 9135

$$

SHEETS

1 follow-up statement

000 
WGUS73 KDVN 071305
FFSDVN
IAC105-071400-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
805 AM CDT MON JUL 7 2003

...THE FLASH FLOOD WARNING WHICH WAS IN EFFECT UNTIL 915 AM CDT FOR 
JONES COUNTY OF IOWA...HAS BEEN CANCELED...

AT 755 AM CDT...THE JONES COUNTY SHERIFFS DEPARTMENT REPORTED THAT 
THE FLASH FLOODING IN MONTICELLO HAD SUBSIDED.  THEY ALSO REPORTED 
THAT STREAMS AND CREEKS IN JONES COUNTY WERE AT NORMAL LEVELS.  THUS 
THE FLASH FLOOD WARNING FOR JONES COUNTY HAS BEEN CANCELED.

ALTHOUGH NO FLASH FLOODING WAS REPORTED IN JONES COUNTY...WE WOULD 
LIKE TO TAKE THIS OPPORTUNITY TO REMIND YOU TO AVOID DRIVING THROUGH 
FLOODED ROADS WHENEVER FLOODING OCCURS.

$$

JAZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 2:39 AM CDT	Severe Thunderstorm Warning	DVN	Benton	51 min
Jul 7, 3:54 AM CDT	Severe Thunderstorm Warning	DVN	Buchanan	51 min
Jul 7, 4:49 AM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware	41 min
Jul 7, 5:51 AM CDT	Severe Thunderstorm Warning	DVN	Jones	39 min
Jul 7, 6:01 AM CDT	Severe Thunderstorm Warning	DVN	Jackson	59 min
Jul 7, 6:13 AM CDT	Severe Thunderstorm Warning	DVN	Clinton	47 min
Jul 7, 6:24 PM CDT	Severe Thunderstorm Warning	DVN	Scott	51 min

Nearby

Flash Flood Warnings in Iowa, 2003 Every flash flood warning in 2003

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.