Alert archive / Nebraska / Flash Flood Warnings in 2016

Flash Flood Warning 21, NWS Omaha, NE

July 18, 2016Burt County, Cuming County, Dodge County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jul 18, 2016, 3:22 AM CDT for Burt County, Cuming County, Dodge County, Nebraska. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 18, 2016, 3:22 AM CDT (08:22 UTC)
Expired: Jul 18, 2016, 6:45 AM CDT
In force: 3 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: None

Counties Burt County, NE, Cuming County, NE, Dodge County, NE

The radar

The Omaha radar (KOAX), 49 km from the middle of the area, began a volume at 08:23 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.

What was reported inside it

Time	Report	Where	Remark
Jul 18, 5:43 AM CDT	FLASH FLOOD	3 Nw Scribner, NE	WATER OVER THE ROADWAY NEAR HIGHWAY 275 AND HIGHWAY 91.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 8.4 hours before the alert went out and 49 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: 1666 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1396 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

As transmitted.

597 
WGUS53 KOAX 180822
FFWOAX
NEC021-039-053-181145-
/O.NEW.KOAX.FF.W.0021.160718T0822Z-160718T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
322 AM CDT MON JUL 18 2016

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN DODGE COUNTY IN EAST CENTRAL NEBRASKA...
  SOUTHERN CUMING COUNTY IN NORTHEASTERN NEBRASKA...
  SOUTHWESTERN BURT COUNTY IN EAST CENTRAL NEBRASKA...

* UNTIL 645 AM CDT

* AT 321 AM CDT...DOPPLER RADAR INDICATED NUMEROUS THUNDERSTORMS
  PRODUCING HEAVY RAIN HAVE MOVED ACROSS THE WARNED AREA. UP TO
  THREE INCHES OF RAIN HAVE MAY ALREADY FALLEN. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY. ADDITIONAL HEAVY RAIN IS POSSIBEL
  THROUGH THE NEXT HOUR OR TWO.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WEST POINT...SCRIBNER...DODGE...SNYDER...UEHLING...CRAIG...
  OAKLAND...10 MILES WEST OF WEST POINT...
  DEAD TIMBER STATE RECREATION AREA AND SUMMIT LAKE STATE RECREATION
  AREA.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 275 IN NEBRASKA BETWEEN MILE MARKERS 120 AND 132.
 HIGHWAY 77 IN NEBRASKA BETWEEN MILEMARKERS 129 AND 142.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 4183 9624 4169 9625 4169 9645 4163 9645
      4166 9689 4174 9690 4186 9695

$$

DEWALD

2 follow-up statements

444 
WGUS73 KOAX 180940
FFSOAX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
440 AM CDT MON JUL 18 2016

NEC021-039-053-181145-
/O.CON.KOAX.FF.W.0021.000000T0000Z-160718T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DODGE NE-CUMING NE-BURT NE-
440 AM CDT MON JUL 18 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM CDT FOR
NORTHERN DODGE...SOUTHERN CUMING AND SOUTHWESTERN BURT COUNTIES...

AT 438 AM CDT...DOPPLER RADAR CONTINUED TO INDICATE NUMEROUS
THUNDERSTORMS PRODUCING HEAVY RAIN MOVING ACROSS THE WARNED AREA.
RADAR HAS ESTIMATED THREE OR MORE INCHES OF RAIN HAVE LIKELY
FALLEN...ESPECIALLY ALONG THE CUMING AND DODGE COUNTY LINES. LOCAL
LAW ENFORCEMENT HAS NOT REPORTED ANY FLOODING PROBLEMS...ALTHOUGH IT
MAY BE OCCURRING IN RURAL AREAS. THUNDERSTORMS SHOULD PUSH OUT OF
THE AREA THROUGH DAYBREAK. 

SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
WEST POINT...SCRIBNER...DODGE...SNYDER...UEHLING...CRAIG...OAKLAND...
10 MILES WEST OF WEST POINT...
DEAD TIMBER STATE RECREATION AREA AND SUMMIT LAKE STATE RECREATION
AREA.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 275 IN NEBRASKA BETWEEN MILE MARKERS 120 AND 132.
 HIGHWAY 77 IN NEBRASKA BETWEEN MILEMARKERS 129 AND 142.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 4183 9624 4169 9625 4169 9645 4163 9645
      4166 9689 4174 9690 4186 9695

$$

DEWALD

804 
WGUS73 KOAX 181047
FFSOAX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
547 AM CDT MON JUL 18 2016

NEC021-039-053-181145-
/O.CON.KOAX.FF.W.0021.000000T0000Z-160718T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DODGE NE-CUMING NE-BURT NE-
547 AM CDT MON JUL 18 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM CDT FOR
NORTHERN DODGE...SOUTHERN CUMING AND SOUTHWESTERN BURT COUNTIES...

AT 546 AM CDT...LOCAL LAW ENFORCEMENT REPORTED WATER OVER THE ROAD
NEAR THE INTERSECTION OF HIGHWAY 275 AND HIGHWAY 91 EAST OF SNYDER.
THUNDERSTORMS WERE FINALLY MOVING OUT OF THE WARNED AREA EARLY THIS
MORNING. DOPPLER RADAR HAS ESTIMATED THAT 3 TO 5 INCHES OF RAIN MAY
HAVE FALLEN IN THE AREA OVERNIGHT. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WEST POINT...SCRIBNER...DODGE...SNYDER...UEHLING...CRAIG...OAKLAND...
10 MILES WEST OF WEST POINT...
DEAD TIMBER STATE RECREATION AREA AND SUMMIT LAKE STATE RECREATION
AREA.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 275 IN NEBRASKA BETWEEN MILE MARKERS 120 AND 132.
 HIGHWAY 77 IN NEBRASKA BETWEEN MILEMARKERS 129 AND 142.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 4183 9624 4169 9625 4169 9645 4163 9645
      4166 9689 4174 9690 4186 9695

$$

DEWALD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 11:01 PM CDT	Special Weather Statement	OAX	Cass	29 min
Jul 18, 12:03 AM CDT	Special Weather Statement	OAX	Sarpy	27 min
Jul 18, 12:12 AM CDT	Special Weather Statement	OAX	Douglas	33 min
Jul 18, 12:14 AM CDT	Severe Thunderstorm Warning	OAX	Douglas, Sarpy	31 min
Jul 18, 12:17 AM CDT	Areal Flood Advisory	OAX	Sarpy	118 min
Jul 18, 1:14 AM CDT	Severe Thunderstorm Warning	OAX	Douglas	31 min
Jul 18, 1:28 AM CDT	Areal Flood Advisory	OAX	Burt, Cuming, Dodge	3 hr
Jul 18, 1:36 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Dodge	39 min
Jul 18, 2:13 AM CDT	Special Weather Statement	OAX	Dodge	32 min
Jul 18, 2:23 AM CDT	Flash Flood Watch	OAX	Burt, Cuming, Dodge, Douglas, Washington	7 hr
Jul 18, 2:23 AM CDT	Severe Thunderstorm Warning	OAX	Dodge, Washington	28 min
Jul 18, 2:49 AM CDT	Special Weather Statement	OAX	Washington	26 min
Jul 18, 2:56 AM CDT	Areal Flood Advisory	OAX	Washington	3 hr
Jul 18, 3:00 AM CDT	Special Weather Statement	OAX	Dodge	30 min
Jul 18, 3:26 AM CDT	Special Weather Statement	OAX	Washington	34 min
Jul 18, 3:54 AM CDT	Special Weather Statement	OAX	Dodge	36 min
Jul 18, 4:58 AM CDT	Special Weather Statement	OAX	Burt	32 min
Jul 18, 5:11 AM CDT	Special Weather Statement	OAX	Dodge	34 min
Jul 18, 5:40 AM CDT	Areal Flood Advisory	OAX	Douglas, Washington	4 hr
Jul 18, 6:43 AM CDT	Areal Flood Warning	OAX	Burt, Cuming, Dodge	3 hr
Jul 18, 9:14 AM CDT	Special Weather Statement	OAX	Cass	31 min
Jul 18, 9:15 AM CDT	River Flood Warning	OAX	Dodge	22 hr
Jul 18, 3:32 PM CDT	Excessive Heat Watch	OAX	Antelope, Boone, Burt, Butler, Cass, Cedar and 24 more	24 hr

Nearby

Flash Flood Warnings in Nebraska, 2016 Every flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.