Alert archive / Iowa / Special Weather Statements in 2016

Special Weather Statement, NWS Des Moines, IA

June 30, 2016Jasper County, Polk County, Iowa

NWS Des Moines, IA issued this special weather statement at Jun 30, 2016, 4:52 PM CDT for Jasper County, Polk County, Iowa. It was in force for 53 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 30, 2016, 4:52 PM CDT (21:52 UTC)
Expired: Jun 30, 2016, 5:45 PM CDT
In force: 53 min
Issued by: NWS Des Moines, IA

Counties Jasper County, IA, Polk County, IA

The radar

The Des Moines radar (KDMX), 63 km from the middle of the area, began a volume at 21:54 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 12:00Z, 9.9 hours before the alert went out and 206 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1246 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 30, 3:58 PM CDT, 54 minutes earlier.

Area forecast discussion, Jun 30, 3:58 PM CDT, 54 minutes before

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Hazardous weather outlook, Jun 30, 3:32 PM CDT, 1 hour 20 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
332 PM CDT THU JUN 30 2016

IAZ004>007-015>017-023>026-033>037-044>048-057>060-070>073-
081>083-092>094-012045-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-SAC-CALHOUN-WEBSTER-HAMILTON-
HARDIN-CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-
POLK-CASS-ADAIR-MADISON-WARREN-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-
DECATUR-
332 PM CDT THU JUN 30 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE FORECAST THROUGH THIS EVENING. A FEW
STORMS COULD BE STRONG NICKEL HAIL AND WIND GUSTS TO 50 MPH THE MAIN
THREATS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THUNDERSTORM CHANCES WILL RETURN TO LOCATIONS MAINLY SOUTH OF
INTERSTATE 80 OVER THE WEEKEND AND THE REST OF THE AREA TUESDAY
NIGHT AND WEDNESDAY. THE PROBABILITY OF SEVERE WEATHER APPEARS
LOW OVER THE WEEKEND BUT LOCALLY HEAVY RAINFALL MAY BE POSSIBLE
TOWARD THE MISSOURI BORDER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

IAZ027-028-038-039-049-050-061-062-074-075-084>086-095>097-012045-
BUTLER-BREMER-GRUNDY-BLACK HAWK-MARSHALL-TAMA-JASPER-POWESHIEK-
MARION-MAHASKA-LUCAS-MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
332 PM CDT THU JUN 30 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE FORECAST THROUGH THIS EVENING. A FEW
STORMS COULD BE SEVERE WITH LARGE HAIL AND DAMAGING WIND THE MAIN
THREATS. A BRIEF ISOLATED TORNADO CANNOT BE RULED OUT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THUNDERSTORM CHANCES WILL RETURN TO SOUTHERN IOWA OVER THE WEEKEND
AND THE REST OF THE AREA TUESDAY NIGHT AND WEDNESDAY. THE
PROBABILITY OF SEVERE WEATHER APPEARS LOW OVER THE WEEKEND BUT
LOCALLY HEAVY RAINFALL MAY BE POSSIBLE TOWARD THE MISSOURI BORDER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

FAB

In the hours before

Special weather statement, Jun 30, 3:39 PM CDT, 1 hour 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
339 PM CDT THU JUN 30 2016

IAZ093-302100-
RINGGOLD IA-
339 PM CDT THU JUN 30 2016

...STRONG THUNDERSTORM OVER SOUTHERN IOWA...

AT 338 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
IRENA...OR 9 MILES SOUTHWEST OF MOUNT AYR...MOVING SOUTHEAST AT 30
MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
REDDING...BENTON AND DELPHOS.

LAT...LON 4059 9447 4062 9447 4073 9432 4057 9409
      4057 9446
TIME...MOT...LOC 2038Z 319DEG 25KT 4062 9435

SKOW

Special weather statement, Jun 30, 3:56 PM CDT, 56 minutes before

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Local storm report, Jun 30, 4:17 PM CDT, 35 minutes before

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Special weather statement, Jun 30, 4:21 PM CDT, 31 minutes before

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Local storm report, Jun 30, 4:44 PM CDT, 8 minutes before

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Special weather statement, Jun 30, 4:52 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 8:22 PM CDT	Special Weather Statement	DMX	Crawford	23 min
Jun 30, 3:34 AM CDT	Special Weather Statement	DMX	Carroll	41 min
Jun 30, 6:27 AM CDT	Special Weather Statement	DMX	Taylor	63 min
Jun 30, 12:30 PM CDT	Special Weather Statement	DMX	Worth	45 min
Jun 30, 1:31 PM CDT	Special Weather Statement	DMX	Crawford	44 min
Jun 30, 1:37 PM CDT	Special Weather Statement	DMX	Bremer, Butler	38 min
Jun 30, 2:09 PM CDT	Special Weather Statement	DMX	Cerro Gordo, Hancock	66 min
Jun 30, 2:19 PM CDT	Special Weather Statement	DMX	Bremer	41 min
Jun 30, 2:55 PM CDT	Special Weather Statement	DMX	Franklin	20 min
Jun 30, 3:15 PM CDT	Special Weather Statement	DMX	Hardin	30 min
Jun 30, 3:24 PM CDT	Severe Thunderstorm Warning	DMX	Hardin	36 min
Jun 30, 3:39 PM CDT	Special Weather Statement	DMX	Ringgold	21 min
Jun 30, 3:53 PM CDT	Severe Thunderstorm Warning	DMX	Hardin, Marshall	37 min
Jun 30, 3:56 PM CDT	Special Weather Statement	DMX	Story	34 min
Jun 30, 4:21 PM CDT	Special Weather Statement	DMX	Marshall, Story	39 min

Nearby

Special Weather Statements in Iowa, 2016 Every 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.