Alert archive / Nebraska / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 263, NWS Hastings, NE

August 9, 2005Valley County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Aug 9, 2005, 5:41 PM CDT for Valley County, Nebraska. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 9, 2005, 5:41 PM CDT (22:41 UTC)
Expired
Aug 9, 2005, 6:10 PM CDT
In force
29 min
Issued by
NWS Hastings, NE
Area
Counties, with a storm outline in the text

County Valley County, NE

The radar

The North Platte radar (KLNX), 139 km from the middle of the area, began a volume at 22:41 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 9, 4:45 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.7 hours before the alert went out and 144 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2005-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 741 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2005-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -105 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
741 J/kg
Mixed-layer CIN
-221 J/kg
Mixed-layer LCL
2063 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-105 m²/s²
0-3 km storm-relative helicity
-57 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Aug 9, 2:36 PM CDT, 3 hours 5 minutes earlier.

Area forecast discussion, Aug 9, 2:36 PM CDT, 3 hours 5 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
236 PM CDT TUE AUG 9 2005

.SHORT TERM...TONIGHT THROUGH 12Z FRIDAY...MAIN FORECAST CONCERNS
REMAIN ASSOCIATED WITH THE FRONT AS IT MOVES INTO THE FORECAST
AREA.

COLD FRONT ALREADY VISIBLE ON KLNX 88D AS IT MOVES THROUGH NORTH
CENTRAL NEBRASKA. ON SATELLITE THERE ARE SOME CUMULUS DEVELOPING
ALONG THE FRONT...AND FURTHER NORTH THERE ARE SOME THUNDERSTORMS.

EXPECT THAT THUNDERSTORMS WILL DEVELOP ALONG THE FRONT AS IT MOVES
SOUTHEAST. THE FRONT IS SLOW TO MOVE AND STILL ONLY MOVES INTO THE
NORTHWEST PART OF THE FORECAST AREA BY 00Z THIS EVENING. HAVE
INCREASED POPS FOR THIS EVENING AND TONIGHT. THE BEST CHANCES WILL
BE IN THE NORTHERN PART OF THE FORECAST AREA DUE TO THE GREATEST
UPPER SUPPORT IN THAT AREA.

LATE TONIGHT THE FRONT WEAKENS ACROSS NORTHERN KANSAS AND THE
PRECIPITATION SHOULD DIMINISH A LITTLE. A WEAK SURFACE HIGH PRESSURE
SETTLES INTO NORTHWEST NEBRASKA ON WEDNESDAY. THIS SHOULD REDUCE THE
CHANCES OF PRECIPITATION...BUT STILL NOT COMPLETELY BRING IT TO AN
END.

THE WEAK FRONT LINGERS ACROSS KANSAS THROUGH WEDNESDAY NIGHT. HAVE
KEPT A SLIGHT CHANCE FOR SOME THUNDERSTORMS...ESPECIALLY IN THE
SOUTHERN PART OF THE FORECAST AREA DURING THIS TIME.

LOW PRESSURE ONCE AGAIN DEVELOPS IN WESTERN NEBRASKA LATE WEDNESDAY
NIGHT AND THERE WILL BE A CHANCE OF SOME THUNDERSTORMS ACROSS THE
FORECAST AREA...THIS TIME FURTHER NORTH CLOSER TO THE CENTER OF THE
LOW.

WITH THE FRONT LINGERING IN THE VICINITY OF THE FORECAST AREA THERE
COULD BE A SOME COOLER TEMPERATURES IN THE NORTH PART OF THE AREA.
LOWERED THE TEMPERATURES IN THE FAR NORTH A DEGREE OR SO FOR
WEDNESDAY...OTHERWISE DID NOT MAKE MANY CHANGES.

.LONG TERM...12Z FRIDAY AND BEYOND. VERY CHALLENGING FORECAST THROUGH
THE ENTIRE PERIOD AS UNCERTAINTY REMAINS HIGH ABOUT PLACEMENT OF
SURFACE FEATURES WHICH WILL HAVE A DRAMATIC IMPACT ON THE LOCAL
WEATHER.  AT THE START OF THE PERIOD...WEATHER ON FRIDAY REMAINS
QUITE QUESTIONABLE AS SURFACE FRONT WILL BE SOMEWHERE ACROSS THE
AREA. NAM/UKMET DEPICTS A PLACEMENT SOMEWHERE ACROSS SOUTHERN
NEBRASKA WHILE THE GFS/ECMWF SHOW A MUCH FARTHER SOUTH PLACEMENT
INTO KANSAS.  CERTAINLY THIS WILL AFFECT HIGH TEMPS AND PRECIP
CHANCES FOR THE DAY ON FRIDAY.  PREFER A SOLUTION CLOSER TO THE NAM
AS THE GFS APPEARS TO BE HIGHLY AFFECTED BY CONVECTIVE FEEDBACK...
SHOVING THE BOUNDARY INTO NORTHERN OKLAHOMA.  FOR NOW...HAVE KEPT
SMALL POPS FOR FRIDAY...WITH TEMPS IN THE 80S...ALTHOUGH SOME AREAS
COULD CERTAINLY SEE 90S SHOULD THE FRONT LIFT A LITTLE FARTHER
NORTH.

LONGWAVE PATTERN BEGINS TO SHIFT FROM A MORE ZONAL LOOK TO A BROAD
CENTRAL/WESTERN CONUS TROF BY SATURDAY.  THIS IS SHOWN BY ALL THE
MEDIUM RANGE SOLUTIONS AND IS SUPPORTED BY POSITION OF CENTRAL
PACIFIC CONVECTION SHIFTING WESTWARD IN TIME. THIS WILL ALLOW MUCH
COOLER AIR TO MOVE SOUTH DOWN THE PLAINS...ALONG WITH REINFORCING
THE SFC BOUNDARY ACROSS THE AREA.  CONFIDENCE IS VERY LOW WITH THE
CONTINUED POSITION OF THE FRONT AS ANY STRONG CONVECTION COULD
EASILY FORCE IT SOUTHWARD OUT OF THE AREA AND LEAD TO A MUCH DRIER
FORECAST.  HOWEVER...PRECIP ON SATURDAY LOOKS TO BE A GOOD BET WITH
RATHER STRONG LIFT OVER THE BOUNDARY JUST SOUTH OF THE CWA.  WITH
PLENTY OF CLOUDS AND PRECIP...TEMPS SHOULD STAY RATHER COOL AND HAVE
DRAMATICALLY LOWERED HIGHS ON BOTH SATURDAY AND SUNDAY TO REFLECT
THIS LIKELIHOOD.  TEMPS MAY NOT BE COOL ENOUGH SHOULD BOUNDARY HANG
TOUGH AND PRECIP LINGER...AND WOULD NOT BE SURPRISED TO SEE READINGS
HOLD NEAR 70 FOR SOME PLACES THIS WEEKEND. UPR TROF LOOKS TO LINGER
THROUGH THE BEGINNING OF THE WEEK...WITH TEMPS ACTUALLY HOLDING
NEAR/SLIGHTLY BELOW NORMAL FOR THE FIRST TIME IN QUITE A WHILE.

.GID WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
KS...NONE.

&&

JCB/LAWRENCE
Hazardous weather outlook, Aug 9, 5:00 PM CDT, 41 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HASTINGS NE
500 PM CDT TUE AUG 9 2005

NEZ039>041-046>048-060>062-072-073-082-101200-
BUFFALO-DAWSON-FURNAS-GOSPER-GREELEY-HALL-HOWARD-MERRICK-NANCE-
PHELPS-SHERMAN-VALLEY-
500 PM CDT TUE AUG 9 2005

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

.DAY ONE...TONIGHT

THUNDERSTORMS WILL CONTINUE TO MOVE SOUTH ACROSS THE AREA. SOME OF
THESE STORMS MAY PRODUCE HAIL TO THE SIZE OF QUARTERS AND WINDS UP
TO 50 MPH.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A CHANCE OF THUNDERSTORMS ALMOST EVERY DAY WEDNESDAY
THROUGH SUNDAY. THE PRIMARY HAZARD IS EXPECTED TO BE LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED TONIGHT. REPORTS OF HAIL AND WIND
GUSTS ARE APPRECIATED.

&&

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB PAGE:
   HTTP://WWW.WEATHER.GOV/HASTINGS  (ALL LOWERCASE)

KSZ005>007-017>019-NEZ049-063-064-074>077-083>087-101200-
ADAMS-CLAY-FILLMORE-FRANKLIN-HAMILTON-HARLAN-JEWELL-KEARNEY-MITCHELL-
NUCKOLLS-OSBORNE-PHILLIPS-POLK-ROOKS-SMITH-THAYER-WEBSTER-YORK-
500 PM CDT TUE AUG 9 2005

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

.DAY ONE...TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS TONIGHT...MAINLY AFTER
MIDNIGHT. PRIMARY HAZARD WILL BE LIGHTNING AND HAIL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A CHANCE OF THUNDERSTORMS ALMOST EVERY DAY WEDNESDAY
THROUGH SUNDAY. THE PRIMARY HAZARD IS EXPECTED TO BE LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.

&&

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB PAGE:
   HTTP://WWW.WEATHER.GOV/HASTINGS  (ALL LOWERCASE)

KISNER

In the hours before

Special weather statement, Aug 9, 4:49 PM CDT, 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
449 PM CDT TUE AUG 9 2005

NEZ039>041-046>048-060>062-072-073-082-100500-
BUFFALO-DAWSON-FURNAS-GOSPER-GREELEY-HALL-HOWARD-MERRICK-NANCE-
PHELPS-SHERMAN-VALLEY-
INCLUDING THE CITIES OF...GRAND ISLAND...HOLDREGE...KEARNEY...
LEXINGTON...ORD
449 PM CDT TUE AUG 9 2005

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
709 IN EFFECT UNTIL 12 AM CDT FOR THE FOLLOWING AREAS

IN NEBRASKA THIS WATCH INCLUDES 12 COUNTIES

IN CENTRAL NEBRASKA

GREELEY               HOWARD                MERRICK
NANCE                 SHERMAN               VALLEY

IN SOUTH CENTRAL NEBRASKA

BUFFALO               DAWSON                FURNAS
GOSPER                HALL                  PHELPS

THIS INCLUDES THE CITIES OF...ARAPAHOE...BEAVER CITY...
CAMBRIDGE...CENTRAL CITY...COZAD...ELWOOD...FULLERTON...GENOA...
GOTHENBURG...GRAND ISLAND...HOLDREGE...KEARNEY...LEXINGTON...
LITCHFIELD...LOUP CITY...ORD...OXFORD...SCOTIA...SPALDING...
ST. PAUL AND WOLBACH.

KISNER
Local storm report, Aug 9, 5:31 PM CDT, 10 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 4:51 PM CDTSevere Thunderstorm WarningGIDGreeley, Valley54 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2005Every severe thunderstorm warning in 2005

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.