Alert archive / Nebraska / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 152, NWS North Platte, NE

May 23, 2005Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 23, 2005, 7:48 PM CDT for Custer County, Nebraska. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 23, 2005, 7:48 PM CDT (00:48 UTC)
Expired: May 23, 2005, 8:45 PM CDT
In force: 57 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Custer County, NE

The radar

The North Platte radar (KLNX), 93 km from the middle of the area, began a volume at 00:49 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 severe thunderstorm 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, 0.8 hours before the alert went out and 57 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: 2256 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1747 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 6.6

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLBF 240048
SVRLBF
NEC041-240145-
/O.NEW.KLBF.SV.W.0152.050524T0048Z-050524T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
748 PM CDT MON MAY 23 2005

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN CUSTER COUNTY IN CENTRAL NEBRASKA

* UNTIL 845 PM CDT

* AT 744 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE HAIL.
   THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM ARNOLD TO 7
  MILES SOUTHWEST OF ARNOLD...AND MOVING SOUTHEAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CALLAWAY BY 835 PM CDT
  9 MILES WEST OF OCONTO BY 845 PM CDT

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4106 9959 4105 9994 4105 10023 4138 10022
      4140 10025 4161 10024 4157 9982 4119 9964

$$

MASEK

3 follow-up statements

000 
WWUS53 KLBF 240107
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
806 PM CDT MON MAY 23 2005

NEC041-240145-
/O.CON.KLBF.SV.W.0152.000000T0000Z-050524T0145Z/
CUSTER NE-
806 PM CDT MON MAY 23 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 845 PM CDT FOR
WESTERN CUSTER COUNTY...

AT 804 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL.  THIS STORM WAS LOCATED 10 MILES EAST OF ARNOLD...MOVING EAST
AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  5 MILES SOUTH OF MERNA AT 835 PM CDT

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4106 9959 4105 9994 4105 10023 4138 10022
      4140 10025 4161 10024 4157 9982 4119 9964

$$

MASEK

000 
WWUS53 KLBF 240128
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
825 PM CDT MON MAY 23 2005

NEC041-240145-
/O.CON.KLBF.SV.W.0152.000000T0000Z-050524T0145Z/
CUSTER NE-
825 PM CDT MON MAY 23 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 845 PM CDT FOR
WESTERN CUSTER COUNTY...

AT 824 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL UP TO GOLF BALL SIZE.  THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM 15 MILES NORTH OF CALLAWAY TO CALLAWAY...OR
ALONG A LINE EXTENDING FROM 11 MILES NORTHWEST OF BROKEN BOW TO 12
MILES SOUTHEAST OF ARNOLD...MOVING SOUTHEAST AT 15 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  MERNA BY 835 PM CDT

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

HAIL UP TO GOLF BALL INCHES IN DIAMETER HAS BEEN REPORTED 5 MILES 
NORTHEAST OF ARNOLD WITH THIS STORM. IF YOU ARE IN THE PATH OF THE 
STORM...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

LAT...LON 4106 9959 4105 9994 4105 10023 4138 10022
      4140 10025 4161 10024 4157 9982 4119 9964

$$

MASEK

000 
WWUS53 KLBF 240142
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
842 PM CDT MON MAY 23 2005

NEC041-240152-
/O.EXP.KLBF.SV.W.0152.000000T0000Z-050524T0145Z/
CUSTER NE-
842 PM CDT MON MAY 23 2005

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN CUSTER COUNTY EXPIRES
AT 845 PM CDT...

LAT...LON 4106 9959 4105 9994 4105 10023 4138 10022
      4140 10025 4161 10024 4157 9982 4119 9964

$$

MASEK

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 North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at May 23, 3:48 PM CDT, 4 hours earlier.

Area forecast discussion, May 23, 3:48 PM CDT, 4 hours before

AREA FORECAST DISCUSSION...CORRECTED TO DROP FRONTIER COUNTY
NATIONAL WEATHER SERVICE NORTH PLATTE NE
348 PM CDT MON MAY 23 2005

.DISCUSSION...
H5 PATTERN IN FAIR AGREEMENT THROUGH 60 HRS. WILL USE BLEND OF NAM
AND GFS FOR THE FORECAST. EARLY THIS AFTERNOON SURFACE TROUGH FROM
VTN THROUGH OGA WITH COOL FRONT APPROACHING OR JUST INTO NORTHWEST
NEBRASKA PANHANDLE. TDS IN THE UPPER 50S OVER SOUTHWEST ZONES WITH
40S THROUGH NORTH CENTRAL ZONES. KLNX RADAR SIGNATURE SHOWING GOOD
WAA. SOME CONVECTION STARTING TO RAPIDLY DEVELOP OVER NORTHEAST CO
SOUTHEAST WY MOVING NORTH OF EAST TOWARDS SOUTHERN NE PANHANDLE
ALONG SURFACE BOUNDARY. MID LEVEL WAVE HELPING TO KICK THINGS OFF
WITH INTERACTION OF SURFACE BOUNDARY. SB CAPES ALONG AND TO THE EAST
OF SFC TROUGH AXIS APPROACHING 35OO J/KG  OVER SOUTHWEST.
INSTABILITY INCREASES THROUGH AFTERNOON WITH MARGINAL SB CIN OVER
SOUTHWEST. SOME MARGINAL TURNING WITH HEIGHT BULK SHEAR MAGNITUDE ON
MINIMAL SIDE. COULD BE ISOLATED TOR MAINLY SOUTHWEST ZONES
ESPECIALLY ALONG THE SURFACE TROUGH. BOUNDARY TO MOVE SOUTHEAST
OVERNIGHT AND THEN WILL MOVE BACK NORTHWEST LATE NIGHT INTO EARLY
MORNING WITH SIMILAR SET UP TO TODAY A BETTER MID LEVEL WAVE MOVING
OVER THE RIDGE LATE AFTERNOON EARLY EVENING. CLOUDY CONDITIONS
TEMPERATURES SOMEWHAT COOLER. BOUNDARY TO LINGER OVER AREA AGAIN ON
WEDNESDAY WITH LATEST MODEL RUN PUSHING IT FURTHER SOUTH WILL HEDGE
WITH SCHC WED AND WED NIGHT.

EXTENDED THURSDAY THROUGH MONDAY H5 PATTERN HAS BROAD TROUGH THROUGH
GREAT LAKES AND NORTHEAST CONUS WITH RIDGE THROUGH PACIFIC NORTHWEST
INTO EASTERN ALASKA THEN ANOTHER LOW OVER THE ALEUTIANS. THE RIDGE
TRANSLATES EAST AS AN H5 WAVE MOVES OUT OF THE NORTHEAST PACIFIC
INTO THE WESTERN CONUS. A LEE TROUGH SETS UP ON SATURDAY WITH WEAK
WAVES ROUNDING THE RIDGE OVER CENTRAL PLAINS. STILL KEEPING SCHC
GOING WITH WEAK WAVES MOVING THROUGH AND TROUGH ALONG THE FRONT
RANGE. BEST CHANCES SUNDAY AND SUNDAY NIGHT. TIMING WILL BE THE KEY.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...TORNADO WATCH UNTIL 11 PM CDT
NEZ022>025-035>037-056>058-069>070.

&&

POWER

Hazardous weather outlook, May 23, 3:29 PM CDT, 4 hours 19 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORTH PLATTE NE
329 PM CDT MON MAY 23 2005

NEZ004>010-022>029-035>038-056>059-069>071-094-240228-
ARTHUR NE-BLAINE NE-BOYD NE-BROWN NE-CHASE NE-CUSTER NE-DEUEL NE-
EASTERN CHERRY NE-FRONTIER NE-GARDEN NE-GARFIELD NE-GRANT NE-
HAYES NE-HOLT NE-HOOKER NE-KEITH NE-KEYA PAHA NE-LINCOLN NE-LOGAN NE-
LOUP NE-MCPHERSON NE-PERKINS NE-ROCK NE-SHERIDAN NE-THOMAS NE-
WESTERN CHERRY NE-WHEELER NE-
INCLUDING THE CITIES OF...AINSWORTH...ARNOLD...ARTHUR...BASSETT...
BIG SPRINGS...BREWSTER...BROKEN BOW...BURWELL...CHAPPELL...CURTIS...
GORDON...GRANT...HAY SPRINGS...HAYES CENTER...IMPERIAL...MULLEN...
NORTH PLATTE...ONEILL...OGALLALA...OSHKOSH...RUSHVILLE...SPENCER...
SPRINGVIEW...STAPLETON...TAYLOR...THEDFORD...TRYON AND VALENTINE
329 PM CDT MON MAY 23 2005

...A TORNADO WATCH IS IN EFFECT FOR SOUTHWEST NEBRASKA UNTIL 10 PM
MDT (11 PM CDT)....

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND NORTH CENTRAL
NEBRASKA.

.DAY ONE...TONIGHT

THERE IS A RISK OF SEVERE THUNDERSTORMS THIS EVENING IN WESTERN
NEBRASKA. THE RISK AREA IS NEARLY ALL OF WESTERN AND NORTH CENTRAL
NEBRASKA.

THUNDERSTORMS ARE EXPECTED TO INTENSIFY RAPIDLY AS THEY COME INTO
SOUTHWEST NEBRASKA. LOW LEVEL WIND PROFILES FAVOR SUPERCELL
DEVELOPMENT AND A NEARLY STATIONARY SURFACE BOUNDARY MAY CAUSE A
TORNADO TO DEVELOP. THE TORNADO RISK AREA IS ALONG AND SOUTH OF
NEBRASKA HIGHWAY 2 AND ALONG AND WEST OF U.S. HIGHWAY 83.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MOST OF WESTERN
AND NORTH CENTRAL NEBRASKA TUESDAY.

A FRONT CROSSING NEBRASKA IS EXPECTED TO GENERATE THUNDERSTORMS AGAIN
IN WESTERN NEBRASKA...AND EXTREME INSTABILITY IS LIKELY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE LIKELY THIS EVENING. ACTIVATION IS
POSSIBLE TUESDAY.

SPRINGER

In the hours before

Local storm report, May 23, 6:30 PM CDT, 1 hour 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
630 PM CDT MON MAY 23 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0629 PM     HAIL             6 SSW HERSHEY           41.08N 101.05W
05/23/2005  1.75 INCH        LINCOLN            NE   PUBLIC

&&

ADO

Special weather statement, May 23, 6:35 PM CDT, 1 hour 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
635 PM CDT MON MAY 23 2005

NEZ071-240400-
FRONTIER NE-
INCLUDING THE CITIES OF...CURTIS
635 PM CDT MON MAY 23 2005

NEZ022>025-035>037-056>059-069-070-240400-
ARTHUR NE-CHASE NE-DEUEL NE-GARDEN NE-GRANT NE-HAYES NE-HOOKER NE-
KEITH NE-LINCOLN NE-LOGAN NE-MCPHERSON NE-PERKINS NE-THOMAS NE-
INCLUDING THE CITIES OF...ARTHUR...BIG SPRINGS...CHAPPELL...GRANT...
HAYES CENTER...IMPERIAL...MULLEN...NORTH PLATTE...OGALLALA...
OSHKOSH...STAPLETON...THEDFORD AND TRYON
635 PM CDT MON MAY 23 2005

A TORNADO WATCH IS IN EFFECT UNTIL 10 PM MDT (11 PM CDR) FOR THE
FOLLOWING COUNTIES.

GARDEN...DEUEL...GRANT...ARTHUR...HOOKER...THOMAS...ARTHUR...
MCPHERSON...LOGAN...LINCOLN...KEITH...PERKINS...CHASE...HAYES...
FRONTIER.

THUNDERSTORMS PRODUCING LARGE HAIL AND DAMAGING WIND ARE LIKELY.
TORNADOES ARE ALSO POSSIBLE.

TUNE IN TO NOAA WEATHER RADIO OR COMMERCIAL RADIO AND TELEVISION FOR
UPDATES AND WARNINGS AS WEATHER CONDITIONS DEVELOP.

MASEK

Local storm report, May 23, 6:42 PM CDT, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
642 PM CDT MON MAY 23 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0638 PM     HAIL             7 S NORTH PLATTE        41.03N 100.77W
05/23/2005  1.75 INCH        LINCOLN            NE   NWS EMPLOYEE

&&

MASEK

Local storm report, May 23, 6:48 PM CDT, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
648 PM CDT MON MAY 23 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0646 PM     HAIL             10 WSW CHAMPION         40.41N 101.89W
05/23/2005  1.25 INCH        CHASE              NE   PUBLIC

            PEA TO HALF DOLLAR SIZED HAIL REPORTED

&&

ADO

Local storm report, May 23, 7:20 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
720 PM CDT MON MAY 23 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0718 PM     HAIL             1 NE NORTH PLATTE       41.14N 100.76W
05/23/2005  1.00 INCH        LINCOLN            NE   PUBLIC

&&

ADO

Local storm report, May 23, 7:25 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
725 PM CDT MON MAY 23 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0715 PM     HAIL             1 N NORTH PLATTE        41.15N 100.77W
05/23/2005  0.88 INCH        LINCOLN            NE   PUBLIC

&&

ADO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 3:17 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Wheeler	44 min
May 24, 5:28 PM CDT	Severe Thunderstorm Warning	LBF	Wheeler	64 min
May 24, 5:38 PM CDT	Severe Thunderstorm Warning	LBF	Wheeler	67 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2005 Every 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.