Alert archive / Nebraska / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 21, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at May 12, 2009, 11:31 PM CDT for Lincoln County, Nebraska. It was in force for 44 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 12, 2009, 11:31 PM CDT (04:31 UTC)
- Expired
- May 13, 2009, 12:15 AM CDT
- In force
- 44 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
County Lincoln County, NE
The radar
The North Platte radar (KLNX), 95 km from the middle of the area, began a volume at 04:31 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 13, 12:07 AM CDT | HAIL 0.25 | 13 Sw North Platte, 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 12, 7:08 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.5 hours before the alert went out and 16 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
- 276 J/kg
- Mixed-layer CIN
- -348 J/kg
- Mixed-layer LCL
- 1901 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KLBF 130431 SVRLBF NEC111-130515- /O.NEW.KLBF.SV.W.0021.090513T0431Z-090513T0515Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 1131 PM CDT TUE MAY 12 2009 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL LINCOLN COUNTY IN SOUTHWEST NEBRASKA... THIS INCLUDES THE CITY OF NORTH PLATTE... * UNTIL 1215 AM CDT * AT 1130 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO GOLF BALL SIZE. THIS STORM WAS LOCATED 17 MILES WEST OF LAKE MALONEY STATE RECREATION AREA...OR 19 MILES SOUTHWEST OF NORTH PLATTE...AND MOVING EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LAKE MALONEY STATE RECREATION AREA AND 6 MILES SOUTH OF NORTH PLATTE BY 1205 AM CDT... 6 MILES WEST OF MAXWELL BY 1215 AM CDT... 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. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT WEDNESDAY MORNING FOR WESTERN NEBRASKA. && LAT...LON 4128 10064 4106 10047 4089 10106 4107 10116 TIME...MOT...LOC 0431Z 256DEG 27KT 4099 10108 $$ TLK
1 follow-up statement
000 WWUS53 KLBF 130451 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 1151 PM CDT TUE MAY 12 2009 NEC111-130515- /O.CON.KLBF.SV.W.0021.000000T0000Z-090513T0515Z/ LINCOLN NE- 1151 PM CDT TUE MAY 12 2009 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT FOR CENTRAL LINCOLN COUNTY... AT 1148 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO GOLF BALL SIZE. THIS STORM WAS LOCATED 8 MILES WEST OF LAKE MALONEY STATE RECREATION AREA...OR 11 MILES SOUTHWEST OF NORTH PLATTE...MOVING NORTHEAST AT 30 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... LAKE MALONEY STATE RECREATION AREA AND NORTH PLATTE BY 1205 AM CDT... 7 MILES WEST OF MAXWELL AND 9 MILES SOUTH OF HIGHWAY 83 MILE MARKER 90 BY 1215 AM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT WEDNESDAY MORNING FOR WESTERN NEBRASKA. && LAT...LON 4128 10064 4106 10047 4089 10106 4107 10116 TIME...MOT...LOC 0450Z 247DEG 27KT 4102 10089 $$ TLK
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 7:28 PM CDT | Tornado Warning | LBF | Hooker, Thomas | 47 min |
| May 12, 10:45 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 45 min |
| May 12, 11:38 PM CDT | Severe Thunderstorm Warning | LBF | Logan, McPherson | 52 min |
| May 12, 11:40 PM CDT | Severe Thunderstorm Warning | LBF | Hooker, McPherson, Thomas | 24 min |
| May 13, 12:01 AM CDT | Severe Thunderstorm Warning | LBF | Brown, Rock | 22 min |
| May 13, 12:13 AM CDT | Severe Thunderstorm Warning | LBF | Lincoln | 32 min |
| May 13, 12:36 AM CDT | Severe Thunderstorm Warning | LBF | Blaine, Brown, Loup, Rock | 39 min |
| May 13, 12:47 AM CDT | Severe Thunderstorm Warning | LBF | Custer | 43 min |
| May 13, 1:26 AM CDT | Severe Thunderstorm Warning | LBF | Custer | 49 min |
| May 13, 3:29 PM CDT | Frost Advisory | LBF | Arthur, Chase, Cherry, Deuel, Frontier, Garden and 8 more | 17 hr |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2009Every 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.