Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 45, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at May 1, 2012, 4:58 PM CDT for Brown County, Rock County, Nebraska. It was in force for 62 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
- May 1, 2012, 4:58 PM CDT (21:58 UTC)
- Expired
- May 1, 2012, 6:00 PM CDT
- In force
- 62 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
Counties Brown County, NE, Rock County, NE
The radar
The North Platte radar (KLNX), 108 km from the middle of the area, began a volume at 22:00 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 |
|---|---|---|---|
| May 1, 5:05 PM CDT | HAIL 1.5 | 4 S Ainsworth, NE |
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 |
|---|---|---|---|
| May 1, 4:58 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.0 hours before the alert went out and 179 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.
- Mixed-layer CAPE
- 1327 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 963 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.4
The text
As transmitted, in the capitals the NWS used until 2016.
717 WUUS53 KLBF 012158 SVRLBF NEC017-149-012300- /O.NEW.KLBF.SV.W.0045.120501T2158Z-120501T2300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 458 PM CDT TUE MAY 1 2012 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL BROWN COUNTY IN NORTH CENTRAL NEBRASKA... CENTRAL ROCK COUNTY IN NORTH CENTRAL NEBRASKA... * UNTIL 600 PM CDT * AT 455 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES SOUTHWEST OF LONG PINE...OR 6 MILES SOUTHEAST OF AINSWORTH...AND MOVING EAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... BASSETT...LONG PINE...TWIN LAKES STATE WILDLIFE MANAGEMENT AREA... NEWPORT...PONY LAKE AND HIGHWAY 183 MILE MARKER 170. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4267 9925 4218 9924 4242 9991 4265 9986 TIME...MOT...LOC 2158Z 281DEG 23KT 4247 9977 WIND...HAIL 60MPH 1.75IN $$ SPRINGER
2 follow-up statements
384 WWUS53 KLBF 012225 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 525 PM CDT TUE MAY 1 2012 NEC017-149-012300- /O.CON.KLBF.SV.W.0045.000000T0000Z-120501T2300Z/ BROWN NE-ROCK NE- 525 PM CDT TUE MAY 1 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL ROCK AND EAST CENTRAL BROWN COUNTIES UNTIL 600 PM CDT... AT 519 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL... AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES SOUTH OF LONG PINE...OR 10 MILES SOUTHEAST OF AINSWORTH... MOVING EAST AT 20 MPH. THERE WAS ALSO ANOTHER STORM JUST NORTH OF BASSETT MOVING EAST AT 20 MPH. THIS STORM IS ALSO CAPABLE OF PRODUCING LARGE HAIL. LOCATIONS IMPACTED INCLUDE... BASSETT...TWIN LAKES STATE WILDLIFE MANAGEMENT AREA...PONY LAKE... NEWPORT AND HIGHWAY 183 MILE MARKER 170. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4267 9925 4218 9924 4242 9991 4265 9986 TIME...MOT...LOC 2224Z 268DEG 15KT 4245 9968 WIND...HAIL 60MPH 1.50IN $$ SPRINGER
730
WWUS53 KLBF 012239
SVSLBF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
539 PM CDT TUE MAY 1 2012
NEC017-012246-
/O.CAN.KLBF.SV.W.0045.000000T0000Z-120501T2300Z/
BROWN NE-
539 PM CDT TUE MAY 1 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BROWN COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF BROWN COUNTY.
THERE WAS ANOTHER STORM IN CENTRAL BROWN COUNTY ABOUT 15 MILES SOUTH
OF JOHNSTOWN MOVING EAST AT 20 MPH. THAT STORM IS CAPABLE OF
PRODUCING HEAVY RAIN AND NICKEL SIZED HAIL.
LAT...LON 4218 9924 4233 9967 4243 9966 4244 9968
4266 9968 4267 9925
TIME...MOT...LOC 2236Z 268DEG 15KT 4246 9961
$$
NEC149-012300-
/O.CON.KLBF.SV.W.0045.000000T0000Z-120501T2300Z/
ROCK NE-
539 PM CDT TUE MAY 1 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL ROCK
COUNTY UNTIL 600 PM CDT...
AT 533 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES
SOUTHEAST OF LONG PINE...OR 10 MILES SOUTHWEST OF BASSETT...MOVING
EAST AT 20 MPH.
LOCATIONS IMPACTED INCLUDE...
BASSETT...TWIN LAKES STATE WILDLIFE MANAGEMENT AREA...PONY LAKE...
NEWPORT AND HIGHWAY 183 MILE MARKER 170.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4218 9924 4233 9967 4243 9966 4244 9968
4266 9968 4267 9925
TIME...MOT...LOC 2236Z 268DEG 15KT 4246 9961
WIND...HAIL 60MPH 1.00IN
$$
SPRINGERThe office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 4:16 PM CDT | Severe Thunderstorm Warning | LBF | Brown | 44 min |
| May 1, 5:46 PM CDT | Severe Thunderstorm Warning | LBF | Holt, Rock | 48 min |
| May 1, 6:31 PM CDT | Severe Thunderstorm Warning | LBF | Rock | 44 min |
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.