Alert archive / Nebraska / Special Weather Statements in 2014

Special Weather Statement, NWS Omaha, NE

June 20, 2014Platte County, Nebraska

NWS Omaha, NE issued this special weather statement at Jun 20, 2014, 5:01 PM CDT for Platte County, Nebraska. It was in force for 29 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 20, 2014, 5:01 PM CDT (22:01 UTC)
Expired: Jun 20, 2014, 5:30 PM CDT
In force: 29 min
Issued by: NWS Omaha, NE

County Platte County, NE

The radar

The Omaha radar (KOAX), 114 km from the middle of the area, began a volume at 22:03 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, 10.0 hours before the alert went out and 114 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: 2428 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

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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 Jun 20, 2:42 PM CDT, 2 hours 19 minutes earlier.

Area forecast discussion, Jun 20, 2:42 PM CDT, 2 hours 19 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
242 PM CDT FRI JUN 20 2014

.SHORT TERM...(TONIGHT THROUGH MONDAY)
ISSUED AT 240 PM CDT FRI JUN 20 2014

THUNDERSTORM COVERAGE/CHANCES REMAIN PRIMARY CONCERN IN SHORT TERM
AS ACTIVE JUNE PATTERN GENERALLY PERSISTS INTO MONDAY.

AFTERNOON SATELLITE IMAGERY SHOWED A CLOSED UPPER LOW PIVOTING
ACROSS SRN SASK CANADA WITH A LOBE EXTENDING SWD ALONG ND/MN
BORDER AT 19Z. THIS LOBE HAS SENT A WEAK BOUNDARY INTO NRN
NEBR...PRIMARILY A DEWPOINT FRONT WITH AROUND 70 DEG SFC DWPTS
FEEDING INTO IT ACROSS NWRN ZONES WITH UPPER 40S JUST TO OUR
NW. ALTHOUGH EARLIER CONVECTION DISPTD...CONTINUED UPSCALE
DEVELOPMENT EXPECTED THROUGH EARLY EVENING AS SPC MESO PAGE
SUGGESTED LITTLE/NO CONVECTIVE INHIBITION WITH 3.5K+ J/KG MLCAPE
SOUTH OF BOUNDARY. WITH 0-6KM BULK SHEAR GENERALLY ON LIGHTER
SIDE...AROUND OR BELOW 30KTS...AFTER INITIAL SVR DEVELOPMENT WITH
HEATING DRIVEN INSTABILITY RELEASE...FEEL BULK OF ACTIVITY COULD
TRANSITION MORE TOWARD A HEAVY RAIN ISSUE AS H85 JET REMAINS
FOCUSED INTO NERN ZONES. UPPED POPS AND QPF ALTHOUGH WENT CLOSER
TO ECMWF QPF AS H85 JET ONLY MODEST AND MOISTURE TRANSPORT LATER
TONIGHT APPEARED TO FOCUS SE OF WHERE BULK OF PRECIP MAY EXIST.

MODEL INDICATIONS ARE THAT PRECIP COULD LINGER SATURDAY MORNING
ACROSS MAINLY WRN IA ZONES...AND POSSIBLY EXTREME NERN
NEBR...BUT BULK OF AREA MUCH OF THE DAY COULD BE DRY. CONTINUED
THIS TREND FROM PRIOR FORECAST BUT RAISED MAX TEMPS...ESPECIALLY
SW...AS AREA SHOULD RECOVER EARLIEST FROM ANY MORNING CLOUDS/ISOLD
TSTMS. LATER IN THE DAY THE FA REMAINS ON SOUTH SIDE OF FASTER
UPPER FLOW WITH FILLING SRN CANADA TROUGH PROVIDES AREA WITH SOME
UPPER DIVERGENCE. HOWEVER...LESS SFC CONVERGENCE WAS NOTED ALONG
A WEAKENED SFC BOUNDARY AND THUS DEVELOPMENT COULD WAIT UNTIL
ANOTHER LOBE ROTATING AROUND UPPER LOW SENDS A STRONGER BOUNDARY
INTO NWRN ZONES LATER SAT NIGHT.

THIS BOUNDARY THEN WEAKENS OR SLOWS AS IT PUSHES INTO FORECAST
SUNDAY...PROBABLY ENOUGH TO WARRANT INCREASING HIGHS SERN ZONES.
MODELS REMAIN FAIRLY CONSISTENT IN SLOWLY SAGGING THE BOUNDARY
ACROSS ZONES SUNDAY/SUNDAY NIGHT AS A STRONGER PIECE OF ENERGY
EJECTS FROM ROCKIES...THUS MODESTLY HIGH POPS WERE MAINTAINED.
THESE HIGH POPS WERE ALSO MAINTAINED FOR MONDAY PERIOD SERN ZONES
DUE TO UNCERTAINTIES IN HOW FAST THIS ENERGY SHIFTS EAST OF THE
FA. COULD SEE SOME REDUCTIONS IN LATER FORECASTS IF FASTER NAM
WOULD VERIFY. COOL ADVECTION/CLOUDS/LINGERING PRECIP ALL INDICATE
COOLER TEMPS SHOULD PREVAIL ON MONDAY.

.LONG TERM...(MONDAY NIGHT THROUGH FRIDAY)
ISSUED AT 240 PM CDT FRI JUN 20 2014

12Z GFS/ECMWF SUPPORT A DRY FORECAST MONDAY NGT/TUESDAY MUCH OF
THE FA AS NW FLOW SPREADS OVER THE AREA BEHIND DEPARTING TROUGH.
HOWEVER...TRAILING ENERGY WILL HOLD UP BOUNDARY LATE TUE NIGHT AND
THEN BUILDING UPPER RIDGE WILL LIKELY LIFT IT BACK NORTH. ALTHOUGH
THIS BUILDING RIDGE COULD EVENTUALLY SHUT DOWN OR GREATLY REDUCE
PRECIP THREAT A PERIOD OR TWO...RETURNING BOUNDARY/MOISTURE/INSTABILITY
WILL BRING A RENEWED THREAT IN TUE NGT THROUGH WED NIGHT PERIODS
AND NEXT TROUGH APPROACHING LATE NEXT WEEK WITH LOBES POTENTIALLY
EJECTING OUT PROVIDING ADDITIONAL SUPPORT. THUS SMALL POPS WILL
BLANKET EXTENDED AND WILL ALLOW LATER FORECASTS TO BETTER FINE-
TUNE PARTICULAR PERIODS AS DAYS GET CLOSER.

&&

.AVIATION...(18Z TAFS FOR KOFK...KLNK AND KOMA.)
ISSUED AT 1244 PM CDT FRI JUN 20 2014

TIMING OF CONVECTION THIS AFTERNOON AND EVENING WILL BE THE MAIN
UNCERTAINTY IN THE FORECAST. EARLIER CONVECTION OVER CENTRAL
NEBRASKA HAS RAPIDLY COLLAPSED SINCE 17Z AND UNSURE OF ANY
SPECIFIC FORCING TO KEY ON THROUGH 00Z. HRRR INDICATES ADDITIONAL
DEVELOPMENT AFTER 20Z SO HAVE FOLLOWED THIS IDEA IN LATEST
FORECAST.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
IA...NONE.
&&

SHORT TERM...CHERMOK
LONG TERM...CHERMOK
AVIATION...FOBERT

Hazardous weather outlook, Jun 20, 11:42 AM CDT, 5 hours 19 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1142 AM CDT FRI JUN 20 2014

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-210645-
MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-
PAGE-KNOX-CEDAR-THURSTON-ANTELOPE-PIERCE-WAYNE-BOONE-MADISON-
STANTON-CUMING-BURT-PLATTE-COLFAX-DODGE-WASHINGTON-BUTLER-
SAUNDERS-DOUGLAS-SARPY-SEWARD-LANCASTER-CASS-OTOE-SALINE-
JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON-
1142 AM CDT FRI JUN 20 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
IOWA...WEST CENTRAL IOWA...EAST CENTRAL NEBRASKA...NORTHEAST
NEBRASKA AND SOUTHEAST NEBRASKA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON
OVER NORTHEAST NEBRASKA. THE THUNDERSTORMS MAY EXPAND SOUTHEAST
LATE THIS AFTERNOON AND OVERNIGHT INTO THE REST OF EASTERN
NEBRASKA AND WESTERN IOWA. A FEW SEVERE STORMS ARE POSSIBLE
WITH LARGE HAIL BEING THE MAIN THREAT.

FLOODING WILL CONTINUE ALONG THE MISSOURI RIVER TODAY FROM
PLATTSMOUTH SOUTH THROUGH RULO.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

PERIODS OF THUNDERSTORMS ARE POSSIBLE OVER THE WEEKEND...MAINLY ON
SATURDAY NIGHT AND SUNDAY NIGHT. ISOLATED SEVERE WEATHER IS
POSSIBLE WITH THESE STORMS.

RIVER LEVELS WILL CONTINUE TO RISE ALONG THE MISSOURI RIVER INTO
THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON OR TONIGHT.

FOBERT

In the hours before

Special weather statement, Jun 20, 11:53 AM CDT, 5 hours 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1153 AM CDT FRI JUN 20 2014

NEZ030-042-201745-
PLATTE NE-BOONE NE-
1153 AM CDT FRI JUN 20 2014

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BOONE AND NORTHWESTERN
PLATTE COUNTIES UNTIL 1245 PM CDT...

AT 1153 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR SPALDING...OR 33 MILES EAST OF ORD...MOVING EAST AT 30 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
ALBION...PRIMROSE AND LORETTO.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4178 9830 4191 9784 4161 9783 4158 9829
TIME...MOT...LOC 1653Z 253DEG 35KT 4169 9828

FOBERT

Special weather statement, Jun 20, 3:54 PM CDT, 1 hour 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
354 PM CDT FRI JUN 20 2014

IAZ043-NEZ015-033-034-202130-
MONONA IA-BURT NE-THURSTON NE-CUMING NE-
354 PM CDT FRI JUN 20 2014

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MONONA...NORTHERN
BURT...EASTERN CUMING AND SOUTHEASTERN THURSTON COUNTIES UNTIL 430 PM
CDT...

AT 353 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
LYONS...OR 39 MILES SOUTH OF SIOUX CITY...MOVING NORTHEAST AT 25 MPH.

NICKEL SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
ONAWA...LYONS...WHITING...DECATUR...OAKLAND...KENNEBEC AND LEWIS AND
CLARK STATE PARK.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY
EVENING FOR EASTERN NEBRASKA.

LAT...LON 4204 9594 4181 9644 4193 9656 4222 9620
      4222 9612
TIME...MOT...LOC 2053Z 232DEG 21KT 4193 9644

KERN

Special weather statement, Jun 20, 4:19 PM CDT, 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
419 PM CDT FRI JUN 20 2014

NEZ017-018-031-032-202145-
MADISON NE-STANTON NE-WAYNE NE-PIERCE NE-
419 PM CDT FRI JUN 20 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN WAYNE...MADISON...
NORTHWESTERN STANTON AND SOUTHEASTERN PIERCE COUNTIES UNTIL 445 PM
CDT...

AT 419 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
BATTLE CREEK...OR 12 MILES SOUTHWEST OF NORFOLK...MOVING NORTHEAST AT
25 MPH.

DIME SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NORFOLK...STANTON AND BATTLE CREEK.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY
EVENING FOR EASTERN NEBRASKA.

LAT...LON 4211 9735 4192 9719 4182 9763 4195 9774
TIME...MOT...LOC 2119Z 241DEG 20KT 4191 9760

KERN

Special weather statement, Jun 20, 4:47 PM CDT, 14 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
447 PM CDT FRI JUN 20 2014

IAZ043-055-NEZ033-034-044-202230-
HARRISON IA-MONONA IA-DODGE NE-BURT NE-CUMING NE-
447 PM CDT FRI JUN 20 2014

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HARRISON...SOUTH
CENTRAL MONONA...CENTRAL BURT...SOUTHEASTERN CUMING AND NORTHEASTERN
DODGE COUNTIES UNTIL 530 PM CDT...

AT 447 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
UEHLING...OR 42 MILES NORTHWEST OF OMAHA...MOVING NORTHEAST AT 25
MPH.

DIME SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
TEKAMAH...UEHLING...CRAIG...LITTLE SIOUX...PELICAN POINT STATE
RECREATION AREA AND SUMMIT LAKE STATE RECREATION AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY
EVENING FOR EASTERN NEBRASKA.

LAT...LON 4170 9651 4177 9656 4197 9620 4180 9599
TIME...MOT...LOC 2147Z 241DEG 20KT 4176 9649

KERN

Special weather statement, Jun 20, 4:49 PM CDT, 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
449 PM CDT FRI JUN 20 2014

IAZ043-NEZ015-034-202230-
MONONA IA-BURT NE-THURSTON NE-
449 PM CDT FRI JUN 20 2014

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL MONONA...NORTHERN BURT
AND SOUTHEASTERN THURSTON COUNTIES UNTIL 530 PM CDT...

AT 449 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
LYONS...OR 36 MILES SOUTH OF SIOUX CITY...MOVING NORTHEAST AT 25 MPH.

DIME SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
ONAWA...LYONS...WHITING...DECATUR...TURIN...KENNEBEC AND LEWIS AND
CLARK STATE PARK.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY
EVENING FOR EASTERN NEBRASKA.

LAT...LON 4221 9603 4201 9589 4186 9642 4197 9652
      4222 9611 4221 9610
TIME...MOT...LOC 2149Z 239DEG 23KT 4198 9637

KERN

Special weather statement, Jun 20, 5:01 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
501 PM CDT FRI JUN 20 2014

NEZ030-031-042-202230-
MADISON NE-PLATTE NE-BOONE NE-
501 PM CDT FRI JUN 20 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL MADISON...EAST
CENTRAL BOONE AND NORTHERN PLATTE COUNTIES UNTIL 530 PM CDT...

AT 501 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
ST. EDWARD...OR 24 MILES NORTHWEST OF COLUMBUS...MOVING NORTHEAST AT
40 MPH.

DIME SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NEWMAN GROVE...PLATTE CENTER...LINDSAY...HUMPHREY...TARNOV AND
CORNLEA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY
EVENING FOR EASTERN NEBRASKA.

LAT...LON 4191 9759 4159 9731 4148 9770 4152 9770
      4153 9780 4165 9792
TIME...MOT...LOC 2201Z 246DEG 35KT 4162 9776

KERN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 10:18 AM CDT	River Flood Advisory	OAX	Douglas, Sarpy	25 hr
Jun 20, 11:53 AM CDT	Special Weather Statement	OAX	Boone	52 min
Jun 20, 3:01 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	29 min
Jun 20, 3:32 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison	43 min
Jun 20, 4:12 PM CDT	Severe Thunderstorm Warning	OAX	Boone	33 min
Jun 20, 4:19 PM CDT	Special Weather Statement	OAX	Madison	26 min
Jun 20, 4:47 PM CDT	Special Weather Statement	OAX	Burt	43 min
Jun 20, 4:53 PM CDT	Severe Thunderstorm Warning	OAX	Burt	37 min
Jun 20, 5:02 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Thurston	28 min
Jun 20, 5:12 PM CDT	Severe Thunderstorm Warning	OAX	Thurston	48 min
Jun 20, 5:28 PM CDT	Severe Thunderstorm Warning	OAX	Burt	47 min
Jun 20, 5:39 PM CDT	Special Weather Statement	OAX	Cedar	51 min
Jun 20, 5:45 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Dodge, Washington	30 min
Jun 20, 5:49 PM CDT	Severe Thunderstorm Warning	OAX	Cedar, Knox	26 min
Jun 20, 6:14 PM CDT	Severe Thunderstorm Warning	OAX	Burt	46 min
Jun 20, 6:19 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Saunders, Seward	26 min
Jun 20, 6:46 PM CDT	Severe Thunderstorm Warning	OAX	Saunders	29 min
Jun 20, 6:54 PM CDT	Severe Thunderstorm Warning	OAX	Dodge, Douglas, Saunders, Washington	36 min
Jun 20, 3:47 AM CDT	Dense Fog Advisory	OAX	Fremont, Mills, Montgomery, Page, Pottawattamie, Shelby	4 hr
Jun 20, 3:54 PM CDT	Special Weather Statement	OAX	Monona	36 min
Jun 20, 4:49 PM CDT	Special Weather Statement	OAX	Monona	41 min
Jun 20, 6:31 PM CDT	Severe Thunderstorm Warning	OAX	Monona	29 min

Nearby

Special Weather Statements in Nebraska, 2014 Every special weather statement 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.