Alert archive / Iowa / Flash Flood Watches in 2014

Flash Flood Watch 5, NWS Des Moines, IA

June 14, 201415 counties in Iowa

NWS Des Moines, IA issued this flash flood watch at Jun 14, 2014, 3:47 PM CDT for 15 counties in Iowa. It took effect at Jun 14, 2014, 7:00 PM CDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Jun 14, 2014, 3:47 PM CDT (20:47 UTC)
In effect from
Jun 14, 2014, 7:00 PM CDT
Expired
Jun 15, 2014, 4:41 AM CDT
In force
10 hr
Issued by
NWS Des Moines, IA
Flood severity
None

Counties Calhoun County, IA, Carroll County, IA, Cerro Gordo County, IA, Crawford County, IA, Emmet County, IA, Hancock County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 128 km from the middle of the area, began a volume at 20:47 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.8 hours before the alert went out and 234 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, Minneapolis, MN at 12:00Z on 2014-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2014-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1564 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Des Moines, IA wrote its last area forecast discussion before this flash flood watch went out at Jun 14, 3:39 PM CDT, 8 minutes earlier.

Area forecast discussion, Jun 14, 3:39 PM CDT, 8 minutes before
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Hazardous weather outlook, Jun 14, 3:44 PM CDT, 3 minutes before
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In the hours before

Special weather statement, Jun 14, 10:29 AM CDT, 5 hours 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1029 AM CDT SAT JUN 14 2014

IAZ004-015-023-033-034-141630-
EMMET IA-PALO ALTO IA-SAC IA-POCAHONTAS IA-CALHOUN IA-
1029 AM CDT SAT JUN 14 2014

...LINE OF THUNDERSTORMS PRODUCING GUSTY WINDS AND UP TO DIME
SIZE HAIL...

AT 1028 AM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 3 MILES SOUTHWEST OF
MILFORD TO 9 MILES NORTH OF DENISON...AND MOVING NORTHEAST AT 45 MPH.

DIME SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
ESTHERVILLE...EMMETSBURG...SAC CITY...LAURENS...ODEBOLT...LOST ISLAND
LAKE...HIGH LAKE...INGHAM LAKE...SILVER LAKE...RUSH LAKE...SWAN
LAKE...GRAETTINGER...SCHALLER...RUTHVEN...FONDA...EARLY...
WALLINGFORD...AYRSHIRE...HAVELOCK AND GRUVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4253 9471 4226 9532 4227 9532 4256 9530
      4256 9491 4350 9492 4350 9468
TIME...MOT...LOC 1528Z 235DEG 40KT 4329 9521 4215 9530

MS JUN 14
Special weather statement, Jun 14, 11:43 AM CDT, 4 hours 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1143 AM CDT SAT JUN 14 2014

IAZ004>006-015-016-023-024-141745-
EMMET IA-WINNEBAGO IA-PALO ALTO IA-HUMBOLDT IA-POCAHONTAS IA-
KOSSUTH IA-HANCOCK IA-
1143 AM CDT SAT JUN 14 2014

**...STRONG THUNDERSTORMS CONTINUE TO MOVE THROUGH NORTHWEST
  WEST IOWA...

AT 1141 AM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 10 MILES EAST OF INGHAM
LAKE TO 11 MILES WEST OF HUMBOLDT...AND MOVING NORTHEAST AT 55 MPH.

HALF INCH HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
ALGONA...SMITH POOL...BUFFALO CENTER...WEST BEND...BANCROFT...SWEA
CITY...BURT...WHITTEMORE...GILMORE CITY...THOMPSON...TITONKA...
RINGSTED...WESLEY...BODE...FENTON...LAKOTA...CRYSTAL LAKE...WODEN...
RAKE AND LONE ROCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4329 9368 4266 9447 4331 9454 4350 9433
      4350 9372
TIME...MOT...LOC 1641Z 219DEG 48KT 4327 9450 4277 9444

MS
Local storm report, Jun 14, 11:57 AM CDT, 3 hours 50 minutes before
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Special weather statement, Jun 14, 12:48 PM CDT, 2 hours 59 minutes before
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Local storm report, Jun 14, 12:58 PM CDT, 2 hours 49 minutes before
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Special weather statement, Jun 14, 1:43 PM CDT, 2 hours 4 minutes before
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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 14, 10:29 AM CDTSpecial Weather StatementDMXSac61 min
Jun 14, 11:43 AM CDTSpecial Weather StatementDMXKossuth, Winnebago62 min
Jun 14, 12:48 PM CDTSpecial Weather StatementDMXHancock, Humboldt, Kossuth, Webster, Winnebago, Wright57 min
Jun 14, 1:43 PM CDTSpecial Weather StatementDMXCerro Gordo, Franklin47 min

Nearby

Flash Flood Watches in Iowa, 2014Every flash flood watch in 2014

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.