Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 155, NWS North Platte, NE

July 19, 2012Cherry County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 19, 2012, 6:18 PM MDT for Cherry 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
Jul 19, 2012, 6:18 PM MDT (00:18 UTC)
Expired
Jul 19, 2012, 7:15 PM MDT
In force
57 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

County Cherry County, NE

The radar

The North Platte radar (KLNX), 77 km from the middle of the area, began a volume at 00:18 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 nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.3 hours before the alert went out and 169 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 00:00Z on 2012-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1746 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2012-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
1746 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
2618 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

Open this sounding in Storm Lab

The text

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

818 
WUUS53 KLBF 200018
SVRLBF
NEC031-200115-
/O.NEW.KLBF.SV.W.0155.120720T0018Z-120720T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
718 PM CDT THU JUL 19 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CHERRY COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 815 PM CDT/715 PM MDT/

* AT 613 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES SOUTHEAST OF STEER CREEK
  CAMPGROUND...OR 34 MILES SOUTHWEST OF VALENTINE...AND MOVING EAST
  AT 15 MPH. NICKEL SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING
  WINDS.

* LOCATIONS IMPACTED INCLUDE...
  HIGHWAY 97 CROSSING THE NORTH LOUP RIVER...MERRITT RESERVOIR DAM...
  VALENTINE NATIONAL WILDLIFE REFUGE...BIG ALKALI LAKE STATE WILDLIFE
  MANAGEMENT AREA...SCHLAGEL CREEK STATE WILDLIFE MANAGEMENT AREA...
  HIGHWAY 97 CROSSING THE NIOBRARA RIVER...HIGHWAY 97 MILE MARKER
  100...HIGHWAY 97 MILE MARKER 110 AND HIGHWAY 20 MILE MARKER 210.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4289 10026 4221 10081 4251 10120 4273 10109
TIME...MOT...LOC 0019Z 288DEG 12KT 4256 10105
WIND...HAIL 60MPH 0.88IN

$$

SPRINGER
2 follow-up statements
162 
WWUS53 KLBF 200048
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
748 PM CDT THU JUL 19 2012

NEC031-200115-
/O.CON.KLBF.SV.W.0155.000000T0000Z-120720T0115Z/
CHERRY NE-
748 PM CDT THU JUL 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN CHERRY
COUNTY UNTIL 815 PM CDT/715 PM MDT/...

AT 646 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED 8 MILES SOUTHEAST OF MERRITT
RESERVOIR DAM...OR 26 MILES SOUTHWEST OF VALENTINE...MOVING SOUTHEAST
AT 15 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  SCHLAGEL CREEK STATE WILDLIFE MANAGEMENT AREA...BIG ALKALI LAKE
  STATE WILDLIFE MANAGEMENT AREA...VALENTINE NATIONAL WILDLIFE REFUGE
  AND HIGHWAY 20 MILE MARKER 210.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4289 10026 4221 10081 4251 10120 4273 10109
TIME...MOT...LOC 0048Z 294DEG 14KT 4255 10078
WIND...HAIL 60MPH 0.75IN

$$

SPRINGER
241 
WWUS53 KLBF 200114
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
814 PM CDT THU JUL 19 2012

NEC031-200124-
/O.EXP.KLBF.SV.W.0155.000000T0000Z-120720T0115Z/
CHERRY NE-
814 PM CDT THU JUL 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHERRY COUNTY WILL
EXPIRE AT 815 PM CDT/715 PM MDT/...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4289 10026 4221 10081 4251 10120 4273 10109
TIME...MOT...LOC 0114Z 294DEG 14KT 4251 10065

$$

SPRINGER

Nearby

Severe Thunderstorm Warnings in Nebraska, 2012Every severe thunderstorm warning in 2012

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.