Alert archive / Iowa / Special Weather Statements in 2016

Special Weather Statement, NWS Omaha, NE

October 4, 2016Fremont County, Iowa

NWS Omaha, NE issued this special weather statement at Oct 4, 2016, 3:03 PM CDT for Fremont County, Iowa. It was in force for 27 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
Oct 4, 2016, 3:03 PM CDT (20:03 UTC)
Expired
Oct 4, 2016, 3:30 PM CDT
In force
27 min
Issued by
NWS Omaha, NE

County Fremont County, IA

The radar

The Omaha radar (KOAX), 98 km from the middle of the area, began a volume at 20:04 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

Omaha, NE (KOAX), launched 12:00Z, 8.1 hours before the alert went out and 98 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, Omaha, NE at 12:00Z on 2016-10-04Temperature 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, Omaha, NE at 12:00Z on 2016-10-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 288 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
1039 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
288 m²/s²
0-3 km storm-relative helicity
252 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.4

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 Omaha, NE wrote its last area forecast discussion before this special weather statement went out at Oct 4, 12:47 PM CDT, 2 hours 16 minutes earlier.

Area forecast discussion, Oct 4, 12:47 PM CDT, 2 hours 16 minutes before
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Hazardous weather outlook, Oct 4, 11:51 AM CDT, 3 hours 12 minutes before
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In the hours before

Special weather statement, Oct 4, 1:52 PM CDT, 1 hour 11 minutes before
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Special weather statement, Oct 4, 2:19 PM CDT, 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
219 PM CDT TUE OCT 4 2016

NEZ091-041930-
NEMAHA NE-
219 PM CDT TUE OCT 4 2016

...SPECIAL WEATHER STATEMENT...

AT 219 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
PERU...OR 18 MILES WEST OF TARKIO...MOVING NORTHEAST AT 65 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
AUBURN...PERU...NEMAHA...BROWNVILLE AND BROWNVILLE STATE RECREATION
AREA.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 136 IN NEBRASKA BETWEEN MILE MARKERS 230 AND 240.
 HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 29 AND 31.

LAT...LON 4038 9586 4052 9581 4052 9566 4051 9569
      4049 9568 4047 9569 4046 9567 4046 9564
      4043 9564 4042 9566 4034 9562 4033 9563
      4031 9566
TIME...MOT...LOC 1919Z 205DEG 55KT 4043 9573

DEWALD
Special weather statement, Oct 4, 2:35 PM CDT, 28 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
235 PM CDT TUE OCT 4 2016

IAZ090-042000-
FREMONT IA-
235 PM CDT TUE OCT 4 2016

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL FREMONT COUNTY UNTIL 300
PM CDT...

AT 234 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
SOUTHWEST OF HAMBURG...OR 19 MILES NORTHWEST OF TARKIO...MOVING
NORTHEAST AT 65 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
HAMBURG...SIDNEY...FARRAGUT...RIVERTON AND WAUBONSIE STATE PARK.

THIS INCLUDES INTERSTATE 29 BETWEEN MILE MARKERS 1 AND 7.

LAT...LON 4077 9539 4058 9553 4058 9564 4059 9566
      4058 9566 4058 9573 4065 9577 4086 9563
TIME...MOT...LOC 1934Z 205DEG 54KT 4059 9570

DEWALD
Special weather statement, Oct 4, 2:53 PM CDT, 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
253 PM CDT TUE OCT 4 2016

IAZ079-042015-
MILLS IA-
253 PM CDT TUE OCT 4 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MILLS...SOUTHWESTERN
POTTAWATTAMIE AND EASTERN SARPY COUNTIES UNTIL 315 PM CDT...

AT 252 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 4
MILES NORTHWEST OF GLENWOOD...OR 15 MILES SOUTHEAST OF OMAHA...MOVING
NORTHEAST AT 50 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
RURAL AREAS IN THE MENTIONED COUNTY.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 34 IN IOWA BETWEEN MILE MARKERS 6 AND 9.
 INTERSTATE 29 BETWEEN MILE MARKERS 35 AND 42.

LAT...LON 4101 9573 4106 9587 4116 9585 4116 9565
      4115 9564
TIME...MOT...LOC 1952Z 204DEG 45KT 4110 9580

DEWALD
Special weather statement, Oct 4, 2:57 PM CDT, 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
257 PM CDT TUE OCT 4 2016

IAZ069-042015-
POTTAWATTAMIE IA-
257 PM CDT TUE OCT 4 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN POTTAWATTAMIE COUNTY
UNTIL 315 PM CDT...

AT 257 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 4
MILES SOUTHEAST OF COUNCIL BLUFFS...OR 11 MILES EAST OF
OMAHA...MOVING NORTHEAST AT 45 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
COUNCIL BLUFFS...TREYNOR...UNDERWOOD...
MCCLELLAND AND LAKE MANAWA STATE PARK.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 29 BETWEEN MILE MARKERS 43 AND 50.
 INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 3 AND 17.

LAT...LON 4117 9568 4117 9582 4121 9588 4138 9584
      4141 9568 4132 9553
TIME...MOT...LOC 1957Z 204DEG 39KT 4121 9580

DEWALD
Special weather statement, Oct 4, 3:03 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
303 PM CDT TUE OCT 4 2016

IAZ090-042030-
FREMONT IA-
303 PM CDT TUE OCT 4 2016

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN FREMONT COUNTY UNTIL 330
PM CDT...

AT 302 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
RIVERTON...OR 18 MILES NORTHWEST OF TARKIO...MOVING NORTHEAST AT 45
MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
FARRAGUT AND RIVERTON.

LAT...LON 4061 9545 4068 9564 4086 9555 4086 9543
      4082 9539
TIME...MOT...LOC 2002Z 204DEG 38KT 4069 9553

DEWALD

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 4, 2:39 AM CDTSpecial Weather StatementOAXMadison36 min
Oct 4, 3:15 AM CDTSpecial Weather StatementOAXPlatte30 min
Oct 4, 1:52 PM CDTSpecial Weather StatementOAXRichardson23 min
Oct 4, 2:19 PM CDTSpecial Weather StatementOAXNemaha11 min
Oct 4, 5:22 PM CDTSevere Thunderstorm WarningOAXSaline38 min
Oct 4, 5:58 PM CDTSevere Thunderstorm WarningOAXSaline, Seward32 min
Oct 4, 6:09 PM CDTSpecial Weather StatementOAXJefferson, Saline51 min
Oct 4, 6:30 PM CDTSpecial Weather StatementOAXButler30 min
Oct 4, 6:32 PM CDTSpecial Weather StatementOAXLancaster28 min
Oct 4, 2:35 PM CDTSpecial Weather StatementOAXFremont25 min
Oct 4, 2:53 PM CDTSpecial Weather StatementOAXMills22 min
Oct 4, 2:57 PM CDTSpecial Weather StatementOAXPottawattamie18 min
Oct 4, 3:25 PM CDTSpecial Weather StatementOAXPage20 min

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.