Alert archive / Nebraska / Flash Flood Warnings in 2003

Flash Flood Warning 9, NWS Hastings, NE

September 10, 2003Sherman County, Nebraska

NWS Hastings, NE issued this flash flood warning at Sep 10, 2003, 10:17 PM CDT for Sherman County, Nebraska. It was in force for 3 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: Sep 10, 2003, 10:17 PM CDT (03:17 UTC)
Expired: Sep 11, 2003, 1:15 AM CDT
In force: 3 hr
Issued by: NWS Hastings, NE
Area: Counties, with a storm outline in the text

County Sherman County, NE

The radar

The Grand Island radar (KUEX), 111 km from the middle of the area, began a volume at 03:19 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.3 hours before the alert went out and 141 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: 2303 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1417 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KGID 110317
FFWGID
NEC163-110615-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
1017 PM CDT WED SEP 10 2003

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SHERMAN COUNTY IN CENTRAL NEBRASKA

* UNTIL 115 AM CDT

* AT 1014 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH VERY
  HEAVY RAIN OVER LOUP CITY...OR ABOUT 37 MILES NORTH OF KEARNEY....
  MOVING NORTHEAST AT 30 MPH.

* SOME LOCATIONS IN THIS WARNING INCLUDE...
  SHERMAN RESERVOIR DAM...
  ASHTON...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND
CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND
PROPERTY.

DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN
DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS...ABANDON IT
IMMEDIATELY AND SEEK HIGHER GROUND.

LAT...LON 4128 9875 4106 9876 4106 9916 4129 9917
          4138 9913 4139 9874
$$
AWJ

NNNN

1 follow-up statement

000 
WGUS73 KGID 110458
FFSGID
NEC163-110530-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
1159 PM CDT WED SEP 10 2003

...FLASH FLOOD WARNING FOR SHERMAN COUNTY IN CENTRAL NEBRASKA HAS
BEEN CANCELED...

NATIONAL WEATHER SERVICE DOPPLER RADAR AND SPOTTER REPORTS INDICATED
HEAVY RAINFALL WAS ENDING ACROSS THE WARNED AREA. SOME MINOR FLOODING
MAY CONTINUE...HOWEVER THE THREAT OF SERIOUS FLOODING HAS ENDED.

AT 1153 PM CDT...6 MILES SOUTHEAST OF LOUP CITY...OR ABOUT 34 MILES
NORTHWEST OF GRAND ISLAND....MOVING NORTHEAST AT 55 MPH.

TO REPORT FLOODING HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR
REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN HASTINGS.

LAT...LON 4142 9915 4111 9911 4107 9877 4130 9879
$$

AWJ

NNNN

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 Hastings, NE wrote its last area forecast discussion before this flash flood warning went out at Sep 10, 8:27 PM CDT, 1 hour 50 minutes earlier.

Area forecast discussion, Sep 10, 8:27 PM CDT, 1 hour 50 minutes before

SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
827 PM CDT WED SEP 10 2003

BASED OFF OF LATEST RADAR AND SURFACE REPORTS OF 2-3 INCH RAINFALL
AMOUNTS ALREADY PRESENT OVER YORK...CLAY...FILLMORE...NUCKOLLS AND
THAYER COUNTIES IN NEBRASKA AS WELL AS SMITH...JEWELL...OSBORNE AND
MITCHELL COUNTIES IN KANSAS...WENT AHEAD AND ISSUED FLOOD WATCH
UNTIL 6 AM.  UPDATED FORECAST TO MENTION NEW SEVERE WATCH AS WELL.
NO OTHER CHANGES MADE AT THIS TIME.

.GID...FLOOD WATCH SOUTHEAST OF A LINE EXTENDING FROM YORK
       TO KENSINGTON.

AWJ

Hazardous weather outlook, Sep 10, 7:17 PM CDT, 3 hours before

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-111200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HASTINGS NE
717 PM CDT WED SEP 10 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL NEBRASKA AND
PARTS OF NORTH CENTRAL KANSAS.

.DAY ONE...TONIGHT

A MODERATE RISK OF SEVERE WEATHER WILL CONTINUE ACROSS ALL OF SOUTH
CENTRAL NEBRASKA AND NORTH CENTRAL KANSAS THROUGH TONIGHT.  TWO MAIN
AREAS OF THUNDERSTORMS WILL CONTINUE TO EVOLVE ACROSS THE OUTLOOK
AREA OVER THE NEXT SEVERAL HOURS.  THE FIRST LINE OF THUNDERSTORMS
EAST OF A LINE EXTENDING FROM CENTRAL CITY IN MERRICK COUNTY NEBRASKA
TO PHILLIPSBURG IN PHILLIPS COUNTY KANSAS...WILL CONTINUE TO SLIDE
EAST THROUGH THE EVENING HOURS.  LARGE HAIL...DAMAGING WINDS AND
FLASH FLOODING WILL REMAIN THE BIGGEST THREAT WITH THIS LINE OF
STORMS ALTHOUGH ISOLATED TORNADOES WILL BE POSSIBLE THROUGH THE
NEXT FEW HOURS.

AS A STRONG COLD FRONT MOVES INTO THE AREA THIS EVENING A SECOND LINE
OF THUNDERSTORMS IS EXPECTED TO EVOLVE OVER THE NORTHWESTERN HALF OF
THE OUTLOOK AREA. THIS LINE WILL PUSH RAPIDLY EAST ACROSS SOUTH
CENTRAL NEBRASKA AND NORTH CENTRAL KANSAS BEFORE EXITING THE AREA
DURING THE OVERNIGHT HOURS. DAMAGING WINDS...LARGE HAIL AND SOME
FLASH FLOODING WILL POSE THE BIGGEST THREAT WITH THESE STORMS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THUNDERSTORMS WILL LINGER ALONG THE COLD FRONTAL BOUNDARY THURSDAY...
MAINLY EAST OF HIGHWAY 14...HOWEVER CHANCES DIMINISH BEHIND THE FRONT
BY THURSDAY AFTERNOON. DRY AND COOL WEATHER IS FORECAST THROUGH THE
WEEKEND...BEFORE A SLOW WARMING TREND NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS WILL BE NEEDED THROUGH THE EVENING AND EARLY
OVERNIGHT HOURS ACROSS ALL OF THE OUTLOOK AREA.

AWJ

In the hours before

Local storm report, Sep 10, 7:06 PM CDT, 3 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
706 PM CDT WED SEP 10 2003

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

0705 PM    1 W OSBORNE               KS   .75 INCH HAIL
09/10/03   OSBORNE

Local storm report, Sep 10, 8:31 PM CDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
831 PM CDT WED SEP 10 2003

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

0655 PM    SHICKLEY                  NE   .75 INCH HAIL
09/10/03   FILLMORE

0707 PM    4 N BURR OAK              KS   65 MPH TSTM GUST
09/10/03   JEWELL                         REPORTED BY STORM
                                          SPOTTER.

0724 PM    CARLETON                  NE   60 MPH TSTM GUST
09/10/03   THAYER                         REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Local storm report, Sep 10, 8:58 PM CDT, 1 hour 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
858 PM CDT WED SEP 10 2003

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

0845 PM    GLEN ELDER                KS   80 MPH TSTM GUST
09/10/03   MITCHELL                       REPORTED BY LAW
                                          ENFORCEMENT
                                          OFFICIAL...MANY TREE
                                          LIMBS DOWN AROUND TOWN.

Special weather statement, Sep 10, 9:14 PM CDT, 1 hour 3 minutes before

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-110500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
914 PM CDT WED SEP 10 2003

...HEAVY RAIN OVERNIGHT...

WIDESPREAD RAIN AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED OVERNIGHT AS
THUNDERSTORMS TRAIN ACROSS SOUTH CENTRAL NEBRASKA AND NORTH CENTRAL
KANSAS.  THE STORMS HAVE DEVELOPED AHEAD OF A COLD FRONT AND UPPER
LOW PRESSURE SYSTEM WHICH WILL GRADUALLY PUSH EAST TONIGHT.

A FLOOD WATCH IS IN EFFECT UNTIL 6 AM FOR YORK...CLAY...FILLMORE...
NUCKOLLS AND THAYER COUNTIES IN NEBRASKA...AND FOR SMITH...JEWELL...
OSBORNE...AND MITCHELL COUNTIES IN KANSAS.  RAINFALL AMOUNTS OF 2 TO
4 INCHES HAVE BEEN REPORTED IN FILLMORE AND THAYER COUNTIES AS OF 9
PM.

THE SHOWER AND THUNDERSTORM ACTIVITY WILL CONTINUE TO EXPAND ACROSS
SOUTH CENTRAL NEBRASKA AND NORTH CENTRAL KANSAS OVERNIGHT.
ADDITIONAL RAINFALL OF 1 TO 3 INCHES ARE POSSIBLE OVERNIGHT.  THE
RECENT DRY CONDITIONS SHOULD PRECLUDE WIDESPREAD FLOODING OUTSIDE OF
THE FLOOD WATCH AREA.  HOWEVER...DITCHES...CREEKS AND
STREAMS WILL FILL RAPIDLY...AND CONSIDERABLE LOW LAND AND URBAN
FLOODING IS POSSIBLE OVERNIGHT.

PEOPLE LIVING IN LOW LYING AREAS SHOULD MONITORED THE WATER
SITUATION AND BE PREPARED TO TAKE ACTION IF FLOODING IS OBSERVED.
MOTORISTS SHOULD BE EXTRA CAUTIOUS ON AREA ROADWAYS...AND BE ON THE
LOOKOUT FOR WATER PONDING OR FLOWING OVER THE ROAD.

THE RAINFALL IS EXPECTED TO END FROM WEST TO EAST AROUND DAYBREAK
THURSDAY.

FAY/T

Local storm report, Sep 10, 9:48 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
948 PM CDT WED SEP 10 2003

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

0940 PM    4 S GENEVA                NE   FLOOD
09/10/03   FILLMORE                       COUNTY DEPUTIES HAVE
                                          BLOCKED HWY 81 DUE TO
                                          WATER OVER THE ROAD.
                                          REPORTED BY EMERGENCY
                                          MANAGEMENT.

Local storm report, Sep 10, 10:10 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1010 PM CDT WED SEP 10 2003

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

1000 PM    2 SW CARLETON             NE   FLOOD
09/10/03   THAYER                         RAINFALL MEASURES OVER
                                          5 INCHES.  WATER OVER
                                          RURAL ROADS. REPORTED
                                          BY COOPERATIVE OBSERVER.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 10, 7:25 PM CDT	Severe Thunderstorm Warning	GID	Fillmore, Nuckolls	65 min
Sep 10, 7:39 PM CDT	Severe Thunderstorm Warning	GID	Thayer	66 min
Sep 10, 7:53 PM CDT	Flash Flood Warning	GID	Fillmore, Thayer	3 hr
Sep 10, 9:35 PM CDT	Severe Thunderstorm Warning	GID	Thayer	55 min
Sep 10, 10:45 PM CDT	Flash Flood Warning	GID	Fillmore, Thayer	3 hr

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.