Alert archive / Nebraska / Flash Flood Warnings in 2012

Flash Flood Warning 13, NWS Omaha, NE

June 14, 2012Butler County, Saunders County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jun 14, 2012, 5:16 PM CDT for Butler County, Saunders County, Nebraska. It was in force for 2 hr. 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 14, 2012, 5:16 PM CDT (22:16 UTC)
Expired: Jun 14, 2012, 7:29 PM CDT
In force: 2 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: None

Counties Butler County, NE, Saunders County, NE

The radar

The Omaha radar (KOAX), 52 km from the middle of the area, began a volume at 22:15 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, 10.3 hours before the alert went out and 52 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: 1190 J/kg
Mixed-layer CIN: -322 J/kg
Mixed-layer LCL: 951 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

288 
WGUS53 KOAX 142216
FFWOAX
NEC023-155-150115-
/O.NEW.KOAX.FF.W.0013.120614T2216Z-120615T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
516 PM CDT THU JUN 14 2012

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN SAUNDERS COUNTY IN EAST CENTRAL NEBRASKA...
  SOUTHEASTERN BUTLER COUNTY IN EAST CENTRAL NEBRASKA...

* UNTIL 815 PM CDT

* AT 511 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA.  FLASH FLOODING IS EXPECTED TO 
  BEGIN SHORTLY. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  VALPARAISO...BRAINARD AND DWIGHT. 

ADDITIONAL RAINFALL AMOUNTS OF UP TO 2 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

THIS INCLUDES HIGHWAY 92 BETWEEN MILE MARKERS 423 AND 438.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND AS WELL 
AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY 
YOUR REPORT TO THE NATIONAL WEATHER SERVICE. 

&&

LAT...LON 4126 9710 4126 9676 4105 9675 4105 9711

$$

FOBERT

1 follow-up statement

896 
WGUS73 KOAX 150029
FFSOAX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
729 PM CDT THU JUN 14 2012

NEC155-023-150125-
/O.CAN.KOAX.FF.W.0013.000000T0000Z-120615T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAUNDERS NE-BUTLER NE-
729 PM CDT THU JUN 14 2012

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN SAUNDERS AND 
SOUTHEASTERN BUTLER COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO 
POSE A THREAT.

ADDITIONAL THUNDERSTORMS WITH HEAVY RAIN ARE POSSIBLE YET TONIGHT.

LAT...LON 4126 9710 4126 9676 4105 9675 4105 9711

$$

FOBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 3:48 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Saunders	57 min
Jun 14, 3:53 PM CDT	Special Weather Statement	OAX	Douglas	37 min
Jun 14, 4:14 PM CDT	Special Weather Statement	OAX	Burt	46 min
Jun 14, 4:29 PM CDT	Special Weather Statement	OAX	Douglas	46 min
Jun 14, 4:33 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Dodge, Saunders	57 min
Jun 14, 4:37 PM CDT	Severe Thunderstorm Warning	OAX	Burt	38 min
Jun 14, 4:47 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Saunders	46 min
Jun 14, 5:12 PM CDT	Special Weather Statement	OAX	Seward	33 min
Jun 14, 5:18 PM CDT	Special Weather Statement	OAX	Burt	42 min
Jun 14, 5:30 PM CDT	Special Weather Statement	OAX	Butler, Saunders, Seward	60 min
Jun 14, 5:38 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Washington	52 min
Jun 14, 6:00 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Lancaster, Otoe, Saunders, Seward	30 min
Jun 14, 6:07 PM CDT	Severe Thunderstorm Warning	OAX	Douglas, Washington	38 min
Jun 14, 6:20 PM CDT	Areal Flood Advisory	OAX	Lancaster, Seward	3 hr
Jun 14, 6:28 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Lancaster, Otoe, Saline, Sarpy, Saunders and 1 more	47 min
Jun 14, 6:48 PM CDT	Areal Flood Advisory	OAX	Douglas, Sarpy	76 min
Jun 14, 6:48 PM CDT	Special Weather Statement	OAX	Douglas	27 min
Jun 14, 6:50 PM CDT	Special Weather Statement	OAX	Thurston	25 min
Jun 14, 6:56 PM CDT	Severe Thunderstorm Warning	OAX	Douglas, Sarpy	34 min

Nearby

Flash Flood Warnings in Nebraska, 2012 Every flash flood warning in 2012

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.