Alert archive / Iowa / Areal Flood Warnings in 2016

Areal Flood Warning 3, NWS La Crosse, WI

June 15, 2016Floyd County, Iowa

NWS La Crosse, WI issued this areal flood warning at Jun 15, 2016, 5:05 AM CDT for Floyd County, Iowa. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 15, 2016, 5:05 AM CDT (10:05 UTC)
Expired: Jun 15, 2016, 11:00 AM CDT
In force: 6 hr
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Flood severity: None

County Floyd County, IA

The radar

The La Crosse radar (KARX), 154 km from the middle of the area, began a volume at 10:08 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, 10.1 hours before the alert went out and 247 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: 2459 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 663 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 202 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 11.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS La Crosse, WI wrote its last area forecast discussion before this areal flood warning went out at Jun 15, 3:46 AM CDT, 1 hour 19 minutes earlier.

Area forecast discussion, Jun 15, 3:46 AM CDT, 1 hour 19 minutes before

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Hazardous weather outlook, Jun 14, 10:51 PM CDT, 6 hours 14 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LA CROSSE WI
1051 PM CDT TUE JUN 14 2016

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-151200-
MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE-
CLAYTON-WABASHA-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON-
TAYLOR-CLARK-BUFFALO-TREMPEALEAU-JACKSON-LA CROSSE-MONROE-JUNEAU-
ADAMS-VERNON-CRAWFORD-RICHLAND-GRANT-
1051 PM CDT TUE JUN 14 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
IOWA...SOUTHEAST MINNESOTA...AND SOUTHWEST INTO WEST CENTRAL
WISCONSIN.

.DAY ONE...TONIGHT

NUMEROUS THUNDERSTORMS WILL CONTINUE THROUGH 1 AM TOWARD CENTRAL
WISCONSIN. SEVERE STORMS ARE NOT EXPECTED...BUT LOCALIZED HEAVY
RAINFALL IS LIKELY.

IN ADDITION...WHERE HEAVIER RAINS FELL ACROSS PORTIONS OF MAINLY
NORTHEAST IOWA EARLIER IN THE DAY...MAINLY MINOR FLOODING OF
STREAMS AND RIVERS IS EXPECTED THROUGH THE NIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORM CHANCES CONTINUE WEDNESDAY INTO WEDNESDAY
EVENING...MAINLY EAST OF THE MISSISSIPPI RIVER. A FEW STORMS FROM
SOUTHWEST WISCONSIN INTO NORTH-CENTRAL WISCONSIN COULD BE STRONG
WEDNESDAY AFTERNOON...WITH STRONG WINDS AND SMALL HAIL.

IN ADDITION...HIGHER WATER LEVELS ARE EXPECTED ON SOME RIVERS AND
STREAMS ACROSS NORTHEAST IOWA THROUGH WEDNESDAY AS RUNOFF FROM
TONIGHT'S HEAVY RAIN CONTINUES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH THE NIGHT.

.EMERGENCY MANAGEMENT COORDINATION...

NO WEBINAR IS SCHEDULED.

LAWRENCE

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 14, 8:05 PM CDT	Areal Flood Advisory	ARX	La Crosse	115 min
Jun 14, 9:43 PM CDT	Special Weather Statement	ARX	Juneau, Monroe, Richland	62 min
Jun 15, 1:48 PM CDT	Special Weather Statement	ARX	Clark, Taylor	57 min
Jun 15, 2:20 PM CDT	Special Weather Statement	ARX	Jackson	55 min
Jun 15, 2:45 PM CDT	Special Weather Statement	ARX	Clark, Taylor	75 min
Jun 15, 3:09 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	51 min
Jun 15, 3:40 PM CDT	Severe Thunderstorm Warning	ARX	Jackson	35 min
Jun 15, 4:01 PM CDT	Special Weather Statement	ARX	Adams	89 min
Jun 15, 4:06 PM CDT	Severe Thunderstorm Warning	ARX	Juneau	39 min
Jun 15, 4:24 PM CDT	Severe Thunderstorm Warning	ARX	Adams	66 min
Jun 14, 7:05 PM CDT	Special Weather Statement	ARX	Fayette, Winneshiek	40 min
Jun 14, 8:00 PM CDT	Areal Flood Warning	ARX	Chickasaw, Floyd, Howard, Mitchell	6 hr
Jun 15, 12:05 AM CDT	River Flood Warning	ARX	Clayton	42 hr

Nearby

Areal Flood Warnings in Iowa, 2016 Every areal flood warning 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.