Alert archive / Nebraska / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 104, NWS Hastings, NE

June 23, 2009York County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jun 23, 2009, 4:55 PM CDT for York County, Nebraska. It was in force for 50 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: Jun 23, 2009, 4:55 PM CDT (21:55 UTC)
Expired: Jun 23, 2009, 5:45 PM CDT
In force: 50 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon

County York County, NE

The radar

The Grand Island radar (KUEX), 94 km from the middle of the area, began a volume at 21:55 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.

Issued	Product	Office	Lasted
Jun 23, 3:28 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 9.9 hours before the alert went out and 114 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: 5075 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 959 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.1

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 Jun 23, 4:34 PM CDT, 21 minutes earlier.

Area forecast discussion, Jun 23, 4:34 PM CDT, 21 minutes before

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Hazardous weather outlook, Jun 23, 4:19 PM CDT, 36 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HASTINGS NE
419 PM CDT TUE JUN 23 2009

NEZ039>041-046>049-060>064-072>077-082>087-241200-
VALLEY-GREELEY-NANCE-SHERMAN-HOWARD-MERRICK-POLK-DAWSON-BUFFALO-
HALL-HAMILTON-YORK-GOSPER-PHELPS-KEARNEY-ADAMS-CLAY-FILLMORE-
FURNAS-HARLAN-FRANKLIN-WEBSTER-NUCKOLLS-THAYER-
419 PM CDT TUE JUN 23 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL NEBRASKA.

.DAY ONE...TONIGHT.

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE THIS EVENING AND
OVERNIGHT. SOME OF THE STORMS MAY BE SEVERE...PRIMARILY ALONG AND
NORTH OF HIGHWAY 6 THROUGH THE EVENING HOURS. HAIL UP TO THE SIZE
OF A HALF DOLLAR AND WIND GUSTS TO AROUND 60 MPH WILL BE THE
PRIMARY HAZARDS. HOWEVER...AN ISOLATED BRIEF WEAK TORNADO CANNOT
BE RULED OUT THROUGH EARLY EVENING. LOCALLY HEAVY RAINFALL WILL
ALSO BE POSSIBLE WITH ANY THUNDERSTORMS THAT DEVELOP.

A HEAT ADVISORY REMAINS IN EFFECT THROUGH EARLY THIS EVENING FOR
AREAS ALONG AND EAST OF HIGHWAY 14 WHERE HEAT INDICES WILL BE
AROUND 105 DEGREES.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THERE IS A CHANCE FOR THUNDERSTORMS WEDNESDAY AND WEDNESDAY NIGHT
ACROSS THE OUTLOOK AREA. A FEW STRONG TO SEVERE THUNDERSTORMS ARE
POSSIBLE...FAVORING AREAS ALONG AND NORTH OF HIGHWAY 6. THE MAIN
HAZARDS WILL BE HAIL TO THE SIZE OF QUARTERS...STRONG WINDS...AND
LOCALLY HEAVY RAINFALL. THERE ARE THEN INTERMITTENT CHANCES FOR
THUNDERSTORMS BEGINNING LATE FRIDAY...AND LASTING THROUGH MONDAY.

HOT TEMPERATURES ARE FORECAST WEDNESDAY AND FRIDAY...AT WHICH TIME
HEAT INDICES MAY CLIMB ABOVE 100 DEGREES DURING THE AFTERNOON AND
EARLY EVENING HOURS. AREAS ALONG AND EAST OF HIGHWAY 281 WILL
EXPERIENCE THE HIGHEST HEAT INDEX VALUES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH THIS EVENING FOR AREAS
ALONG AND NORTH OF HIGHWAY 6.

&&

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

KSZ005>007-017>019-241200-
PHILLIPS-SMITH-JEWELL-ROOKS-OSBORNE-MITCHELL-
419 PM CDT TUE JUN 23 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL KANSAS.

.DAY ONE...TONIGHT.

ISOLATED THUNDERSTORMS ARE POSSIBLE THIS EVENING...BUT SEVERE
WEATHER IS NOT EXPECTED.

A HEAT ADVISORY REMAINS IN EFFECT THROUGH EARLY THIS EVENING FOR
AREAS ALONG AND EAST OF HIGHWAY 14 WHERE HEAT INDICES WILL BE
AROUND 105 DEGREES.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THERE IS A CHANCE FOR THUNDERSTORMS WEDNESDAY NIGHT ACROSS THE
OUTLOOK AREA...WITH INTERMITTENT CHANCES FOR THUNDERSTORMS THEN
EXISTING LATE FRIDAY THROUGH MONDAY.

HOT TEMPERATURES ARE FORECAST WEDNESDAY AND FRIDAY...AT WHICH TIME
HEAT INDICES MAY CLIMB ABOVE 100 DEGREES DURING THE AFTERNOON AND
EARLY EVENING HOURS. AREAS ALONG AND EAST OF HIGHWAY 281 WILL
EXPERIENCE THE HIGHEST HEAT INDEX VALUES.

.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)

In the hours before

Special weather statement, Jun 23, 4:15 PM CDT, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
415 PM CDT TUE JUN 23 2009

NEZ047-062-232145-
HALL-HOWARD-
415 PM CDT TUE JUN 23 2009

...THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY FOR...

  SOUTHEASTERN HOWARD COUNTY IN CENTRAL NEBRASKA
  NORTH CENTRAL HALL COUNTY IN SOUTH CENTRAL NEBRASKA

AT 414 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A STRONG THUNDERSTORM NEAR DANNEBROG...OR 13 MILES NORTHWEST OF GRAND
ISLAND...AND MOVING NORTHEAST AT 10 MPH.

* THE THUNDERSTORM WILL BE NEAR...
  DANNEBROG BY 420 PM CDT
  ST. LIBORY BY 445 PM CDT

DIME SIZE HAIL...AND WINDS UP TO 40 MPH ARE EXPECTED WITH THIS STORM.

LAT...LON 4128 9844 4115 9828 4109 9828 4102 9846
      4100 9857 4105 9864
TIME...MOT...LOC 2114Z 227DEG 9KT 4107 9852

HEINLEIN

Local storm report, Jun 23, 4:36 PM CDT, 19 minutes before

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Special weather statement, Jun 23, 4:43 PM CDT, 12 minutes before

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Local storm report, Jun 23, 4:46 PM CDT, 9 minutes before

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Special weather statement, Jun 23, 4:50 PM CDT, 5 minutes before

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Local storm report, Jun 23, 4:55 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 3:39 AM CDT	Dense Fog Advisory	GID	Adams, Buffalo, Clay, Fillmore, Greeley, Hall and 7 more	3 hr
Jun 23, 3:39 AM CDT	Heat Advisory	GID	Clay, Fillmore, Hamilton, Merrick, Nance, Nuckolls and 3 more	17 hr
Jun 23, 3:55 PM CDT	Special Weather Statement	GID	Hall	35 min
Jun 23, 4:15 PM CDT	Special Weather Statement	GID	Howard	30 min
Jun 23, 4:19 PM CDT	Severe Thunderstorm Warning	GID	Howard	41 min
Jun 23, 4:43 PM CDT	Special Weather Statement	GID	Howard	32 min
Jun 23, 4:50 PM CDT	Special Weather Statement	GID	York	25 min
Jun 23, 4:59 PM CDT	Special Weather Statement	GID	Howard	31 min
Jun 23, 5:06 PM CDT	Severe Thunderstorm Warning	GID	Greeley, Howard	39 min
Jun 23, 5:09 PM CDT	Severe Thunderstorm Warning	GID	Polk	51 min
Jun 23, 5:32 PM CDT	Special Weather Statement	GID	Nance	28 min
Jun 23, 5:38 PM CDT	Special Weather Statement	GID	Greeley	37 min
Jun 23, 5:45 PM CDT	Severe Thunderstorm Warning	GID	Nance	45 min
Jun 23, 6:01 PM CDT	Special Weather Statement	GID	Polk	29 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2009 Every severe thunderstorm warning in 2009

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.