Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 7, NWS North Platte, NE

March 18, 2012Cherry County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Mar 18, 2012, 8:32 PM MDT for Cherry County, Nebraska. It was in force for 21 min. 1 report 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
Mar 18, 2012, 8:32 PM MDT (02:32 UTC)
Expired
Mar 18, 2012, 8:53 PM MDT
In force
21 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Cherry County, NE

The radar

The North Platte radar (KLNX), 90 km from the middle of the area, began a volume at 02:34 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

TimeReportWhereRemark
Mar 18, 8:42 PM MDTHAIL 17 Sw Merritt Reservoir, NE

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

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.5 hours before the alert went out and 180 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 2012-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1047 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 00:00Z on 2012-03-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 185 square meters per square second.1939587897Sfc1 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
1047 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
1861 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
185 m²/s²
0-3 km storm-relative helicity
252 m²/s²
Significant tornado parameter
0.1
Supercell composite
6.8

Open this sounding in Storm Lab

The text

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

957 
WUUS53 KLBF 190232
SVRLBF
NEC031-190315-
/O.NEW.KLBF.SV.W.0007.120319T0232Z-120319T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
932 PM CDT SUN MAR 18 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 1015 PM CDT/915 PM MDT/

* AT 829 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 11
  MILES EAST OF HIGHWAY 97 CROSSING THE NORTH LOUP RIVER...OR 30
  MILES NORTH OF MULLEN...AND MOVING NORTH AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MERRITT RESERVOIR DAM AROUND 945 PM CDT.
  HIGHWAY 97 CROSSING THE NIOBRARA RIVER AROUND 955 PM CDT.
  CROOKSTON AROUND 1005 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE HIGHWAY
97 MILE MARKER 110.

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 4298 10100 4296 10054 4238 10072 4240 10098
TIME...MOT...LOC 0232Z 190DEG 50KT 4249 10082
WIND...HAIL 60MPH 1.00IN

$$

TAYLOR
1 follow-up statement
802 
WWUS53 KLBF 190253
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
953 PM CDT SUN MAR 18 2012

NEC031-190303-
/O.CAN.KLBF.SV.W.0007.000000T0000Z-120319T0315Z/
CHERRY NE-
953 PM CDT SUN MAR 18 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHERRY COUNTY IS
CANCELLED...

THE SEVERE THUNDERSTORM WARNING THAT PROMPTED THE WARNING HAS BEEN
UPGRADED TO A TORNADO WARNING.

LAT...LON 4298 10100 4296 10054 4238 10072 4240 10098
TIME...MOT...LOC 0253Z 190DEG 50KT 4278 10075

$$

CDC

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 6:06 PM MDTSevere Thunderstorm WarningLBFKeith, Lincoln, Perkins39 min
Mar 18, 6:38 PM MDTSevere Thunderstorm WarningLBFArthur, Keith, Lincoln, McPherson52 min
Mar 18, 6:53 PM MDTSevere Thunderstorm WarningLBFHayes, Lincoln52 min
Mar 18, 7:05 PM MDTSevere Thunderstorm WarningLBFCherry, Hooker, McPherson40 min
Mar 18, 7:42 PM MDTSevere Thunderstorm WarningLBFLincoln48 min
Mar 18, 8:04 PM MDTTornado WarningLBFLincoln26 min
Mar 18, 8:28 PM MDTTornado WarningLBFLincoln, Logan, McPherson32 min
Mar 18, 8:43 PM MDTTornado WarningLBFCherry32 min
Mar 18, 9:05 PM MDTSevere Thunderstorm WarningLBFCherry, Logan, Thomas40 min
Mar 18, 9:14 PM MDTTornado WarningLBFCherry16 min
Mar 19, 3:19 AM MDTRed Flag WarningLBFArthur, Cherry, Deuel, Garden, Grant, Keith and 1 more15 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.