Alert archive / Nebraska / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 21, NWS North Platte, NE

March 28, 2007Arthur County, Keith County, McPherson County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Mar 28, 2007, 8:52 PM MDT for Arthur County, Keith County, McPherson County, Nebraska. It was in force for 38 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
Mar 28, 2007, 8:52 PM MDT (02:52 UTC)
Expired
Mar 28, 2007, 9:30 PM MDT
In force
38 min
Issued by
NWS North Platte, NE
Area
Counties, with a storm outline in the text

Counties Arthur County, NE, Keith County, NE, McPherson County, NE

The radar

The North Platte radar (KLNX), 91 km from the middle of the area, began a volume at 02:55 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.

IssuedProductOfficeLasted
Mar 28, 8:32 PM MDTTornado WatchSPC5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.9 hours before the alert went out and 83 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 2007-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1774 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 2007-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 square meters per square second.19395878Sfc1 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
1774 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
816 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
2.5
Supercell composite
10.8

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLBF 290252
SVRLBF
NEC005-101-117-290330-
/O.NEW.KLBF.SV.W.0021.070329T0252Z-070329T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
852 PM MDT WED MAR 28 2007

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN KEITH COUNTY IN SOUTHWEST NEBRASKA...
  EASTERN ARTHUR COUNTY IN WEST CENTRAL NEBRASKA...
  SOUTHWESTERN MCPHERSON COUNTY IN WEST CENTRAL NEBRASKA...

* UNTIL 930 PM MDT(1030 PM CDT)

* AT 850 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN
  EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 9 MILES SOUTH OF BUCKTAIL
  LAKE...OR ABOUT 17 MILES SOUTHEAST OF ARTHUR...AND MOVING NORTHEAST
  AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BUCKTAIL LAKE BY 900 PM MDT...
  DIAMOND BAR LAKE BY 1010 PM CDT...
  8 MILES SOUTHEAST OF SAND BEACH LAKE BY 1025 PM CDT...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. 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 4167 10163 4122 10157 4120 10127 4167 10128

$$

13
2 follow-up statements
000 
WWUS53 KLBF 290311
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1011 PM CDT WED MAR 28 2007

NEC005-117-290321-
/O.CAN.KLBF.SV.W.0021.000000T0000Z-070329T0330Z/
MCPHERSON NE-ARTHUR NE-
1011 PM CDT WED MAR 28 2007

...THE SEVERE THUNDERSTORM WARNING FOR ARTHUR AND MCPHERSON COUNTIES
IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM CDT THURSDAY
MORNING(300 AM MDT THURSDAY MORNING) FOR WESTERN NEBRASKA.

LAT...LON 4138 10154 4122 10157 4120 10127 4137 10127

$$

NEC101-290330-
/O.CON.KLBF.SV.W.0021.000000T0000Z-070329T0330Z/
KEITH NE-
911 PM MDT WED MAR 28 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM MDT
FOR NORTHEASTERN KEITH COUNTY...

AT 905 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DIME SIZE HAIL. 
THIS STORM WAS LOCATED OVER EAST CENTRAL KEITH COUNTY...OR ABOUT 21
MILES EAST OF OGALLALA...MOVING NORTH AT 30 MPH.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM MDT THURSDAY MORNING
FOR WESTERN NEBRASKA.

LAT...LON 4138 10154 4122 10157 4120 10127 4137 10127

$$

13
000 
WWUS53 KLBF 290327
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1026 PM CDT WED MAR 28 2007

NEC101-290336-
/O.EXP.KLBF.SV.W.0021.000000T0000Z-070329T0330Z/
KEITH NE-
926 PM MDT WED MAR 28 2007

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KEITH COUNTY
EXPIRES AT 930 PM MDT...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM MDT THURSDAY MORNING
FOR WESTERN NEBRASKA.

THE SEVERE THUNDERSTORM WHICH HAD PROMPTED THE WARNING FOR 
NORTHEASTERN KEITH COUNTY HAS WEAKENED BELOW SEVERE LIMITS. AT THIS 
TIME HEAVY RAINFALL LOOKS TO BE THE MAIN ISSUE WITH ANY 
THUNDERSTORMS THAT CONTINUE THIS EVENING ACROSS KEITH COUNTY. 

LAT...LON 4138 10154 4122 10157 4120 10127 4137 10127

$$

13

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 28, 6:00 PM MDTSevere Thunderstorm WarningLBFChase30 min
Mar 28, 6:10 PM MDTTornado WarningLBFCherry35 min
Mar 28, 6:25 PM MDTSevere Thunderstorm WarningLBFChase50 min
Mar 28, 6:26 PM MDTSevere Thunderstorm WarningLBFArthur, Keith49 min
Mar 28, 6:41 PM MDTTornado WarningLBFArthur, Keith49 min
Mar 28, 6:47 PM MDTTornado WarningLBFCherry28 min
Mar 28, 6:53 PM MDTTornado WarningLBFChase, Perkins52 min
Mar 28, 7:07 PM MDTTornado WarningLBFArthur, Garden38 min
Mar 28, 7:26 PM MDTTornado WarningLBFGrant34 min
Mar 28, 7:43 PM MDTTornado WarningLBFKeith, Perkins47 min
Mar 28, 8:20 PM MDTSevere Thunderstorm WarningLBFCherry, Sheridan40 min
Mar 28, 8:23 PM MDTSevere Thunderstorm WarningLBFKeith, Lincoln, Perkins52 min
Mar 28, 8:26 PM MDTTornado WarningLBFKeith18 min
Mar 28, 8:56 PM MDTSevere Thunderstorm WarningLBFHayes49 min
Mar 28, 10:18 PM MDTFlash Flood WarningLBFChase, Hayes, Keith, Perkins6 hr

Nearby

Severe Thunderstorm Warnings in Nebraska, 2007Every severe thunderstorm warning in 2007

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.