Alert archive / Nebraska / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 310, NWS North Platte, NE

July 22, 2009Chase County, Perkins County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 22, 2009, 2:16 PM MDT for Chase County, Perkins County, Nebraska. It was in force for 59 min. 6 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 22, 2009, 2:16 PM MDT (20:16 UTC)
Expired: Jul 22, 2009, 3:15 PM MDT
In force: 59 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

Counties Chase County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 156 km from the middle of the area, began a volume at 20:16 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.

What was reported inside it

Time	Report	Where	Remark
Jul 22, 2:27 PM MDT	HAIL 1	5 Nw Brandon, NE	PUBLIC REPORTED QUARTER SIZE HAIL FROM STORM.
Jul 22, 2:30 PM MDT	TSTM WND GST 70	2 W Brandon, NE	THUNDERSTORM WIND GUSTS WERE ESTIMATED AT 70 MPH. THE WINDS WERE ACCOMPANIED BY HAIL RANGING FROM PEA SIZE TO ONE HALF INCH IN DIAMETER.
Jul 22, 2:41 PM MDT	HAIL 2	3 W Brandon, NE	THE PUBLIC REPORTED HAIL UP TO 2 INCHES WITH THUNDERSTORM WIND DAMAGE TO TREES.
Jul 22, 2:42 PM MDT	TSTM WND DMG	3 W Brandon, NE	THE PUBLIC REPORTED 3-4 INCH DIAMETER TREE LIMBS BROKEN FROM 70 MPH WIND GUSTS.
Jul 22, 3:05 PM MDT	HAIL 1.75	3 N Lamar, NE	DELAYED REPORT OF HAIL AS LARGE AS GOLF BALLS. THE HAIL DESTROYED SUNFLOWER AND BEAN FIELDS.
Jul 22, 3:22 PM MDT	HAIL 0.5	Lamar, NE	PUBLIC REPORTED MARBLE SIZE HAIL COVERING THE GROUND.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 22, 1:55 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.3 hours before the alert went out and 121 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: 78 J/kg
Mixed-layer CIN: -187 J/kg
Mixed-layer LCL: 1482 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLBF 222016
SVRLBF
NEC029-135-222115-
/O.NEW.KLBF.SV.W.0310.090722T2016Z-090722T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
216 PM MDT WED JUL 22 2009

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CHASE COUNTY IN SOUTHWEST NEBRASKA...
  WESTERN PERKINS COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 315 PM MDT

* AT 216 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR BRANDON...OR 12 MILES WEST OF GRANT...AND
  MOVING SOUTH AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRANDON BY 240 PM MDT...
  6 MILES EAST OF VENANGO BY 250 PM MDT...
  8 MILES NORTHEAST OF LAMAR BY 315 PM MDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4079 10206 4094 10205 4096 10179 4055 10169
      4053 10205
TIME...MOT...LOC 2016Z 355DEG 12KT 4088 10194

$$

DDB

4 follow-up statements

000 
WWUS53 KLBF 222030
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
230 PM MDT WED JUL 22 2009

NEC029-135-222115-
/O.CON.KLBF.SV.W.0310.000000T0000Z-090722T2115Z/
PERKINS NE-CHASE NE-
230 PM MDT WED JUL 22 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM MDT
FOR NORTHWESTERN CHASE AND WESTERN PERKINS COUNTIES...

AT 225 PM MDT...THE PUBLIC REPORTED A SEVERE THUNDERSTORM CAPABLE OF
PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS LOCATED NEAR BRANDON...
OR 11 MILES WEST OF GRANT...MOVING SOUTH AT 15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRANDON BY 240 PM MDT...
  6 MILES EAST OF VENANGO BY 250 PM MDT...
  8 MILES NORTHEAST OF LAMAR BY 315 PM MDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HAIL UP TO QUARTER SIZE HAS BEEN REPORTED 5 MILES NORTHWEST OF 
BRANDON WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...TAKE 
IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
WEDNESDAY EVENING FOR SOUTHWEST NEBRASKA.

&&

LAT...LON 4079 10206 4094 10205 4096 10179 4055 10169
      4053 10205
TIME...MOT...LOC 2028Z 355DEG 12KT 4084 10194

$$

DDB

000 
WWUS53 KLBF 222034
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
234 PM MDT WED JUL 22 2009

NEC029-135-222115-
/O.CON.KLBF.SV.W.0310.000000T0000Z-090722T2115Z/
PERKINS NE-CHASE NE-
234 PM MDT WED JUL 22 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM MDT
FOR NORTHWESTERN CHASE AND SOUTHWESTERN PERKINS COUNTIES...

AT 233 PM MDT...LOCAL LAW ENFORCEMENT REPORTED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DESTRUCTIVE WINDS IN
EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR BRANDON...OR 12 MILES
WEST OF GRANT...MOVING SOUTH AT 10 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  9 MILES NORTH OF LAMAR BY 315 PM MDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DAMAGING WINDS UP TO 70 MPH WERE REPORTED 2 MILES WEST OF BRANDON 
WITH THIS STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND 
STAY AWAY FROM WINDOWS

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
WEDNESDAY EVENING FOR SOUTHWEST NEBRASKA.

&&

LAT...LON 4079 10206 4087 10204 4089 10189 4055 10169
      4053 10205
TIME...MOT...LOC 2034Z 345DEG 9KT 4079 10195

$$

13

000 
WWUS53 KLBF 222041
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
241 PM MDT WED JUL 22 2009

NEC029-135-222115-
/O.CON.KLBF.SV.W.0310.000000T0000Z-090722T2115Z/
PERKINS NE-CHASE NE-
241 PM MDT WED JUL 22 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM MDT
FOR NORTHWESTERN CHASE AND SOUTHWESTERN PERKINS COUNTIES...

AT 239 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS
LOCATED 6 MILES SOUTHEAST OF VENANGO...OR 15 MILES SOUTHWEST OF
GRANT...MOVING SOUTH AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAMAR BY 305 PM MDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
WEDNESDAY EVENING FOR SOUTHWEST NEBRASKA.

&&

LAT...LON 4079 10206 4087 10204 4089 10189 4055 10169
      4053 10205
TIME...MOT...LOC 2041Z 352DEG 20KT 4071 10195

$$

13

000 
WWUS53 KLBF 222100 RRA
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
300 PM MDT WED JUL 22 2009

NEC029-135-222115-
/O.CON.KLBF.SV.W.0310.000000T0000Z-090722T2115Z/
PERKINS NE-CHASE NE-
300 PM MDT WED JUL 22 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM MDT
FOR NORTHWESTERN CHASE AND SOUTHWESTERN PERKINS COUNTIES...

AT 257 PM MDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING GOLF BALL SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70
MPH.  THIS STORM WAS LOCATED NEAR LAMAR...OR 18 MILES NORTHWEST OF
IMPERIAL...MOVING SOUTH AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAMAR BY 305 PM MDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
WEDNESDAY EVENING FOR SOUTHWEST NEBRASKA.

&&

LAT...LON 4073 10204 4075 10185 4055 10169 4053 10205
      4054 10205
TIME...MOT...LOC 2100Z 343DEG 23KT 4061 10194

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 1:21 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Keith, Perkins	39 min
Jul 22, 2:34 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	56 min
Jul 22, 2:49 PM MDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan	56 min
Jul 22, 3:06 PM MDT	Severe Thunderstorm Warning	LBF	Chase	54 min
Jul 22, 3:11 PM MDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	64 min
Jul 22, 4:10 PM MDT	Severe Thunderstorm Warning	LBF	Frontier	50 min
Jul 22, 4:19 PM MDT	Flash Flood Warning	LBF	Frontier	3 hr
Jul 22, 4:23 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln, Logan, McPherson	52 min
Jul 22, 4:33 PM MDT	Severe Thunderstorm Warning	LBF	Custer	27 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.