Alert archive / Nebraska / Flash Flood Warnings in 2003

Flash Flood Warning 9, NWS Omaha, NE

June 9, 2003Wayne County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jun 9, 2003, 9:19 PM CDT for Wayne County, Nebraska. It was in force for 4 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 9, 2003, 9:19 PM CDT (02:19 UTC)
Expired: Jun 10, 2003, 1:15 AM CDT
In force: 4 hr
Issued by: NWS Omaha, NE
Area: Counties, with a storm outline in the text

County Wayne County, NE

The radar

The Omaha radar (KOAX), 120 km from the middle of the area, began a volume at 02:22 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.3 hours before the alert went out and 120 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: 223 J/kg
Mixed-layer CIN: -235 J/kg
Mixed-layer LCL: 2359 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 272 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.

000 
WGUS53 KOAX 100222
FFWOAX
NEC179-100615-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OMAHA NE
919 PM CDT MON JUN 9 2003

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WAYNE COUNTY IN NORTHEAST NEBRASKA

* UNTIL 115 AM CDT

* AT 917 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY       
  HEAVY RAIN OF UP TO 4 INCHES IN NORTHERN WAYNE COUNTY. 

* SOME LOCATIONS AFFECTED...CARROLL AND WAYNE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY AND
MOVE TO HIGHER GROUND.

LAT...LON 4234 9704 4226 9702 4227 9683 4214 9684
          4215 9736 4235 9739

$$

POLLACK

1 follow-up statement

000 
WGUS73 KOAX 100616
FFSOAX
NEC173-179-100715-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
115 AM CDT TUE JUN 10 2003

THE FLASH FLOOD WARNING FOR THURSTON COUNTY IS CANCELLED.
THE FLASH FLOOD WARNING FOR WAYNE COUNTY HAS EXPIRED.
RAIN WAS ENDED IN THE AREA...AND THE WATER HAS HAD TIME TO SUBSIDE.  
HOWEVER...MOTORISTS SHOULD STILL EXERCISE CAUTION.  WASHOUTS ARE
POSSIBLE...ESPECIALLY ON RURAL ROADS.  DO NOT DRIVE ON ROADS THAT
APPEAR TO BE DAMAGED...WHERE WATER IS STILL PRESENT...OR WHERE
BARRICADES ARE PRESENT.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMENENT...OR HAS A HIGH
PROBABILITY OF OCCURRING.

LAT...LON 4227 9637 4205 9631 4213 9725 4235 9737

$$

POLLACK

What forecasters said that day

The local office's own words before this flash flood warning 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 flash flood warning went out at Jun 9, 2:20 PM CDT, 6 hours 59 minutes earlier.

Area forecast discussion, Jun 9, 2:20 PM CDT, 6 hours 59 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
220 PM CDT MON JUN 9 2003

FORECAST CHALLENGES...PRECIPITATION CHANCES DURING THE PERIOD.

SYNOPSIS...LOW LEVEL MOISTURE STREAMING NORTH THIS AFTERNOON IN
ADVANCE OF DEVELOPING WESTERN SYSTEM.  DEWPOINTS IN THE LOWER 60S
HAVE SPREAD ACROSS SOUTH CENTRAL NEBRASKA WITH EASTERN EDGE OF THIS
MOISTURE ALONG WRN BORDER OF CWA. NOT MUCH GOING ON AT THIS TIME IN
THE NORTHERN PLAINS WITH SOME SHOWERS SHOWING UP ON RADAR ALONG
NORTH CENTRAL BORDER INTO ERN SD. SEVERAL SHORT WAVES INDICATED ON
WV LOOP UPSTREAM OF THE AREA WITH STRONGER ONES OVER ERN MT AND SWRN
ID. THUNDERSTORM POTENTIAL STILL LOOKS GOOD FOR TONIGHT ACROSS THE
AREA WITH STORMS FIRING NORTHWEST OF THE AREA THIS AFTERNOON AS
CONVERGENCE INCREASES ALONG DEVELOPING SURFACE BOUNDRY FROM NORTH
CENTRAL INTO EAST CENTRAL NEBRASKA...THEN MOVE EAST INTO THE AREA.

SHORT TERM... THUNDERSTORM POTENTIAL STILL LOOKS GOOD FOR TONIGHT
ACROSS THE AREA WITH STORMS EXPECTED TO FIRE NORTHWEST OF THE AREA
THIS AFTERNOON AS CONVERGENCE INCREASES ALONG DEVELOPING SURFACE
BOUNDRY FROM NORTH CENTRAL INTO EAST CENTRAL NEBRASKA...THEN MOVE
EAST INTO THE AREA THIS EVENING. SOME STORMS MAY LINGER IN PARTS OF
THE SOUTHEAST CWA ON TUESDAY AS FRONT SLOWS UP ACROSS NORTHERN
MISSOURI AND NORTHEAST KS. AFTER A SHORT BREAK TUESDAY
NIGHT...ANOTHER CHANCE OF THUNDERSTORMS RETURNS TO THE AREA LATE
WEDNESDAY INTO WEDNESDAY NIGHT AS YET ANOTHER SHORT WAVE MOVES
ACROSS THE NORTHERN PLAINS WITH SEVERAL SURFACE BOUNDERIES INDICATED
OVER THE CENTRAL PLAINS.

THINGS REMAIN UNSETTLED THROUGH THE EARLY PART OF THE EXTENDED PERIOD
AS GFS STALLS OUT A SURFACE BOUNDRY OVER THE SOUTHERN PLAINS WITH
SEVERAL CONVECTIVE COMPLEXES INDICATED NORTH OF THIS BOUNDRY PLACING
SRN PARTS OF CWA ON NORTHERN EDGE OF RAIN AREA. LITTLE CHANGE TO
EXTENDED AT THIS TIME WITH PRECIP CHANCES CONTINUING INTO SATURDAY THEN
STAYING WTH DRY FORECAST SUNDAY INTO MONDAY AS BOTH GFS AND ECMWF
INDICATE RIDING DEVELOPING WITH CUTOFF LOW MEANDERING OVER THE SRN PLAINS
AND LOWER MS VALLY AREA.

.OMA...NONE.

FOBERT

Hazardous weather outlook, Jun 9, 5:10 PM CDT, 4 hours 9 minutes before

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-101100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
510 PM CDT MON JUN 9 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA
AND SOUTHWEST IOWA.

.DAY ONE...TONIGHT AND TUESDAY

SEVERE THUNDERSTORMS ARE PROBABLE OVER A LARGE PART OF EASTERN
NEBRASKA AND SOUTHWEST IOWA TONIGHT...ESPECIALLY THROUGH LATE
EVENING.  WARM AND INCREASINGLY HUMID AIR HAD SPREAD NORTH INTO
CENTRAL NEBRASKA MONDAY AFTERNOON CREATING QUITE UNSTABLE
CONDITIONS. MEANWHILE...RELATIVELY STRONG NORTHWEST WINDS IN THE
JET STREAM LEVEL...AND AN UPPER LEVEL DISTURBANCE TRACKING INTO
THE PLAINS...WILL CREATE FAVORABLE WIND SHEAR AND LIFT FOR THE
EXPECTED SEVERE THUNDERSTORM DEVELOPMENT.  SUPERCELLS WITH
DAMAGING THUNDERSTORM WINDS AND LARGE HAIL ARE THE MAIN THREAT
BUT A FEW TORNADOES ARE POSSIBLE.  THE AREA WITH THE HIGHER RISK
OF TORNADOES IN THE OUTLOOK AREA IS ALONG AND NORTHWEST OF A LINE
FROM BEATRICE TO FREMONT TO ONAWA IOWA. HOWEVER...ANY SEVERE
THUNDERSTORM THAT DEVELOPS OVER THE AREA THIS EVENING HAS THE
POTENTIAL TO BECOME TORNADIC.

.DAYS TWO THROUGH SEVEN...TUESDAY NIGHT THROUGH MONDAY

A SERIES OF UPPER LEVEL DISTURBANCES AND WEAK FRONTS ARE STILL
FORECAST TO CROSS THE CENTRAL PLAINS FROM WEDNESDAY THROUGH
SATURDAY. THIS WILL KEEP AN UNSETTLED WEATHER PATTERN ACROSS THE
AREA WITH A CONTINUED RISK OF THUNDERSTORMS. THE STRENGTH AND
TIMING OF THESE THUNDERSTORMS WILL BE ASSESSED IN LATER HAZARDOUS
WEATHER OUTLOOKS.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS SHOULD REMAIN READY FOR ACTIVATION THIS EVENING.

CHERMOK

In the hours before

Local storm report, Jun 9, 7:19 PM CDT, 2 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
719 PM CDT MON JUN 09 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0602 PM    SANTEE                    NE   .75 INCH HAIL
06/09/03   KNOX                           REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0630 PM    1 NE LINDY                NE   TORNADO
06/09/03   KNOX                           REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0649 PM    COLERIDGE                 NE   2 INCH HAIL
06/09/03   CEDAR                          REPORTED BY COOPERATIVE
                                          OBSERVER.

0649 PM    COLERIDGE                 NE   1.75 INCH HAIL
06/09/03   CEDAR                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Local storm report, Jun 9, 7:33 PM CDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
733 PM CDT MON JUN 09 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0713 PM    6 W OBERT                 NE   1.75 INCH HAIL
06/09/03   CEDAR                          REPORTED BY FIRE AND
                                          RESCUE.

0728 PM    4 W CROFTON               NE   1 INCH HAIL
06/09/03   KNOX                           2.5 INCHES OF RAIN IN
                                          60 MINUTES. REPORTED BY
                                          EMERGENCY MANAGEMENT.

Local storm report, Jun 9, 7:45 PM CDT, 1 hour 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
745 PM CDT MON JUN 09 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0717 PM    SANTEE                    NE   .75 INCH HAIL
06/09/03   KNOX                           REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0732 PM    HARTINGTON                NE   1.75 INCH HAIL
06/09/03   CEDAR                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0737 PM    6 SE HARTINGTON           NE   TORNADO
06/09/03   CEDAR                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Local storm report, Jun 9, 8:11 PM CDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
811 PM CDT MON JUN 09 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0730 PM    WYNOT                     NE   .75 INCH HAIL
06/09/03   CEDAR                          REPORTED BY PUBLIC.
                                          HAIL FELL FOR 20
                                          MINUTES  FROM 1930 TO
                                          1950 HOURS.  RECEIVED 3
                                          INCHES OF RAIN FROM
                                          1830 TO 2000 HOURS.

Local storm report, Jun 9, 8:25 PM CDT, 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
825 PM CDT MON JUN 09 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0818 PM    LAUREL                    NE   60 MPH TSTM GUST
06/09/03   CEDAR                          SMALL TREE BRANCHES
                                          BROKEN OFF.  REPORTED
                                          BY STORM SPOTTER.

Local storm report, Jun 9, 9:09 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
909 PM CDT MON JUN 09 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0835 PM    2 S EMERSON               NE   60 MPH TSTM GUST
06/09/03   THURSTON                       TREE BRANCHES DOWN.
                                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:16 PM CDT	Tornado Warning	OAX	Cedar	44 min
Jun 9, 7:21 PM CDT	Severe Thunderstorm Warning	OAX	Knox	24 min
Jun 9, 7:32 PM CDT	Flash Flood Warning	OAX	Cedar, Knox	6 hr
Jun 9, 7:43 PM CDT	Tornado Warning	OAX	Knox	32 min
Jun 9, 7:58 PM CDT	Tornado Warning	OAX	Cedar, Knox	17 min
Jun 9, 8:11 PM CDT	Tornado Warning	OAX	Antelope, Knox	49 min
Jun 9, 8:15 PM CDT	Severe Thunderstorm Warning	OAX	Cedar, Wayne	45 min
Jun 9, 8:31 PM CDT	Severe Thunderstorm Warning	OAX	Thurston	29 min
Jun 9, 8:59 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Thurston	46 min
Jun 9, 9:03 PM CDT	Tornado Warning	OAX	Antelope	42 min
Jun 9, 9:14 PM CDT	Severe Thunderstorm Warning	OAX	Wayne	46 min
Jun 9, 9:26 PM CDT	Severe Thunderstorm Warning	OAX	Boone, Platte	49 min
Jun 9, 9:31 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Pierce	44 min
Jun 9, 9:37 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Thurston	8 min
Jun 9, 9:48 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Thurston	42 min
Jun 9, 9:58 PM CDT	Severe Thunderstorm Warning	OAX	Wayne	42 min
Jun 9, 10:05 PM CDT	Flash Flood Warning	OAX	Thurston	4 hr
Jun 9, 10:24 PM CDT	Severe Thunderstorm Warning	OAX	Butler	36 min
Jun 9, 10:43 PM CDT	Severe Thunderstorm Warning	OAX	Seward	32 min
Jun 9, 10:53 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saunders	37 min
Jun 9, 10:56 PM CDT	Severe Thunderstorm Warning	OAX	Cuming	34 min
Jun 9, 11:13 PM CDT	Severe Thunderstorm Warning	OAX	Seward	47 min
Jun 9, 11:14 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Otoe	61 min
Jun 9, 11:20 PM CDT	Severe Thunderstorm Warning	OAX	Burt	25 min
Jun 9, 11:32 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster	43 min
Jun 9, 11:44 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Johnson, Nemaha	61 min
Jun 9, 11:59 PM CDT	Severe Thunderstorm Warning	OAX	Saline, Seward	46 min
Jun 10, 12:27 AM CDT	Severe Thunderstorm Warning	OAX	Lancaster	48 min
Jun 10, 12:43 AM CDT	Severe Thunderstorm Warning	OAX	Jefferson	47 min
Jun 10, 12:45 AM CDT	Severe Thunderstorm Warning	OAX	Johnson, Pawnee	45 min
Jun 10, 1:00 AM CDT	Severe Thunderstorm Warning	OAX	Nemaha, Richardson	45 min
Jun 10, 1:32 AM CDT	Severe Thunderstorm Warning	OAX	Gage	28 min

Nearby

Flash Flood Warnings in Nebraska, 2003 Every flash flood warning in 2003

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.