Alert archive / Nebraska / Flash Flood Warnings in 2018

Flash Flood Warning 13, NWS Omaha, NE

June 25, 2018Cuming County, Thurston County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jun 25, 2018, 4:43 PM CDT for Cuming County, Thurston 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: Jun 25, 2018, 4:43 PM CDT (21:43 UTC)
Expired: Jun 25, 2018, 7:45 PM CDT
In force: 3 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: None

Counties Cuming County, NE, Thurston County, NE

The radar

The Omaha radar (KOAX), 100 km from the middle of the area, began a volume at 21:43 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
Jun 25, 5:35 PM CDT	FLASH FLOOD	Pender, NE	NUMEROUS ROADS UNDER WATER. HWY 94 NEAR PENDER. HWY 9 NEAR PENDER. HWY 16 NEAR PENDER.

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 12:00Z, 9.7 hours before the alert went out and 100 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: 118 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 796 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -89 m²/s²
0-3 km storm-relative helicity: -80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

605 
WGUS53 KOAX 252143
FFWOAX
NEC039-173-260045-
/O.NEW.KOAX.FF.W.0013.180625T2143Z-180626T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Omaha/Valley Nebraska
443 PM CDT MON JUN 25 2018

The National Weather Service in Omaha has issued a

* Flash Flood Warning for...
  Northeastern Cuming County in northeastern Nebraska...
  Northwestern Thurston County in northeastern Nebraska...

* Until 745 PM CDT.

* At 442 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...
  Pender, Emerson and Thurston. 

LAT...LON 4208 9656 4208 9678 4226 9678 4226 9673
      4228 9672 4228 9661

$$

ZAPOTOCNY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 7:21 PM CDT	Special Weather Statement	OAX	Seward	24 min
Jun 24, 7:51 PM CDT	Special Weather Statement	OAX	Burt	24 min
Jun 24, 8:10 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Thurston	35 min
Jun 24, 9:54 PM CDT	Flash Flood Watch	OAX	Boone, Burt, Butler, Cedar, Colfax, Cuming and 7 more	24 hr
Jun 24, 9:54 PM CDT	Flash Flood Warning	OAX	Burt, Cuming, Thurston	3 hr
Jun 24, 10:00 PM CDT	Flash Flood Warning	OAX	Cedar, Thurston, Wayne	2 hr
Jun 25, 12:54 AM CDT	Flash Flood Warning	OAX	Cuming	3 hr
Jun 25, 1:58 AM CDT	Areal Flood Advisory	OAX	Colfax, Cuming, Dodge, Platte, Stanton	3 hr
Jun 25, 2:00 AM CDT	River Flood Warning	OAX	Cuming	8 hr
Jun 25, 3:37 AM CDT	Areal Flood Advisory	OAX	Burt, Cuming, Dodge	3 hr
Jun 25, 6:13 AM CDT	Areal Flood Advisory	OAX	Platte	3 hr
Jun 25, 9:50 AM CDT	Areal Flood Warning	OAX	Platte	6 hr
Jun 25, 10:11 AM CDT	Areal Flood Warning	OAX	Dodge	9 hr
Jun 25, 12:17 PM CDT	Areal Flood Warning	OAX	Butler, Colfax, Cuming, Dodge, Platte, Stanton	9 hr
Jun 25, 12:31 PM CDT	River Flood Warning	OAX	Platte	42 hr
Jun 25, 4:07 PM CDT	Areal Flood Warning	OAX	Cuming	6 hr
Jun 25, 4:18 PM CDT	River Flood Warning	OAX	Dodge	20 hr
Jun 25, 4:51 PM CDT	Special Weather Statement	OAX	Jefferson, Saline, Seward	39 min
Jun 25, 5:27 PM CDT	Special Weather Statement	OAX	Saline	33 min
Jun 25, 5:33 PM CDT	Special Weather Statement	OAX	Gage	27 min
Jun 25, 5:35 PM CDT	River Flood Warning	OAX	Dodge	3 days
Jun 25, 5:35 PM CDT	River Flood Warning	OAX	Dodge	23 hr
Jun 25, 5:42 PM CDT	Areal Flood Advisory	OAX	Cedar, Thurston, Wayne	4 hr
Jun 25, 5:56 PM CDT	Special Weather Statement	OAX	Gage	34 min
Jun 25, 5:57 PM CDT	Flash Flood Warning	OAX	Thurston, Wayne	4 hr
Jun 25, 6:12 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster	33 min
Jun 25, 6:34 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Lancaster	13 min

Nearby

Flash Flood Warnings in Nebraska, 2018 Every flash flood warning in 2018

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.