Alert archive / Nebraska / Tornado Warnings in 2012
Tornado Warning 11, NWS Omaha, NE
NWS Omaha, NE issued this tornado warning at May 23, 2012, 7:12 PM CDT for Lancaster County, Saunders County, Nebraska. It was in force for 33 min. 4 reports 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 23, 2012, 7:12 PM CDT (00:12 UTC)
- Expired
- May 23, 2012, 7:45 PM CDT
- In force
- 33 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
Counties Lancaster County, NE, Saunders County, NE
The radar
The Omaha radar (KOAX), 45 km from the middle of the area, began a volume at 00:14 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 23, 7:46 PM CDT | HAIL 0.88 | Wahoo, NE | |
| May 23, 7:48 PM CDT | TSTM WND GST 68 | Wahoo, NE | |
| May 23, 7:49 PM CDT | HAIL 0.88 | 1 N Wahoo, NE | |
| May 23, 7:50 PM CDT | HAIL 0.88 | Ithaca, 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 23, 4:07 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 0.2 hours before the alert went out and 45 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
- 1035 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 2387 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 195 m²/s²
- 0-3 km storm-relative helicity
- 291 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.7
The text
As transmitted, in the capitals the NWS used until 2016.
521 WFUS53 KOAX 240012 TOROAX NEC109-155-240045- /O.NEW.KOAX.TO.W.0011.120524T0012Z-120524T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 712 PM CDT WED MAY 23 2012 THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A * TORNADO WARNING FOR... SOUTH CENTRAL SAUNDERS COUNTY IN EAST CENTRAL NEBRASKA... EXTREME NORTHWESTERN LANCASTER COUNTY IN SOUTHEAST NEBRASKA... * UNTIL 745 PM CDT * AT 709 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR DWIGHT...OR 19 MILES NORTHWEST OF LINCOLN...AND MOVING NORTHEAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... WAHOO...VALPARAISO AND CERESCO. THIS INCLUDES THE FOLLOWING HIGHWAYS... HIGHWAY 77 BETWEEN MILE MARKERS 81 AND 93. HIGHWAY 92 NEAR MILE MARKER 446. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. IF YOU CANNOT SAFELY DRIVE AWAY FROM THE TORNADO...AS A LAST RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR VEHICLE AND LIE DOWN IN A LOW LYING AREA AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4096 9690 4104 9698 4125 9664 4108 9645 TIME...MOT...LOC 0009Z 240DEG 32KT 4103 9693 $$ DEE
3 follow-up statements
162 WWUS53 KOAX 240026 SVSOAX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 726 PM CDT WED MAY 23 2012 NEC109-155-240045- /O.CON.KOAX.TO.W.0011.000000T0000Z-120524T0045Z/ SAUNDERS NE-LANCASTER NE- 726 PM CDT WED MAY 23 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR SOUTH CENTRAL SAUNDERS AND EXTREME NORTHWESTERN LANCASTER COUNTIES... AT 723 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR VALPARAISO...OR 17 MILES NORTHWEST OF LINCOLN...MOVING NORTHEAST AT 30 MPH. LOCATIONS IMPACTED INCLUDE... WAHOO...VALPARAISO AND CERESCO. THIS INCLUDES THE FOLLOWING HIGHWAYS... HIGHWAY 77 BETWEEN MILE MARKERS 82 AND 93. HIGHWAY 92 NEAR MILE MARKER 446. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4107 9691 4125 9664 4108 9645 4100 9687 TIME...MOT...LOC 0023Z 232DEG 25KT 4104 9685 $$ DEE
374 WWUS53 KOAX 240038 SVSOAX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 738 PM CDT WED MAY 23 2012 NEC109-240055- /O.CAN.KOAX.TO.W.0011.000000T0000Z-120524T0045Z/ LANCASTER NE- 738 PM CDT WED MAY 23 2012 ...THE TORNADO WARNING FOR EXTREME NORTHWESTERN LANCASTER COUNTY IS CANCELLED... THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED. LAT...LON 4107 9676 4119 9658 4108 9645 4104 9673 TIME...MOT...LOC 0038Z 244DEG 30KT 4105 9673 $$ NEC155-240045- /O.CON.KOAX.TO.W.0011.000000T0000Z-120524T0045Z/ SAUNDERS NE- 738 PM CDT WED MAY 23 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR SOUTH CENTRAL SAUNDERS COUNTY... AT 733 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR VALPARAISO...OR 16 MILES NORTH OF LINCOLN...MOVING NORTHEAST AT 35 MPH. LOCATIONS IMPACTED INCLUDE... CERESCO AND ITHACA. THIS INCLUDES HIGHWAY 77 BETWEEN MILE MARKERS 82 AND 87. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4107 9676 4119 9658 4108 9645 4104 9673 TIME...MOT...LOC 0033Z 244DEG 30KT 4105 9673 $$ DEE
698 WWUS53 KOAX 240050 SVSOAX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 750 PM CDT WED MAY 23 2012 NEC155-240055- /O.EXP.KOAX.TO.W.0011.000000T0000Z-120524T0045Z/ SAUNDERS NE- 750 PM CDT WED MAY 23 2012 ...THE TORNADO WARNING FOR SOUTH CENTRAL SAUNDERS COUNTY HAS EXPIRED... THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED. THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE. HOWEVER...A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR PARTS OF SAUNDERS COUNTY UNTIL 8 PM. ADDITIONAL SEVERE THUNDERSTORM DEVELOPMENT REMAINS POSSIBLE...AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11 PM. LAT...LON 4107 9676 4119 9658 4108 9645 4104 9673 TIME...MOT...LOC 0049Z 240DEG 32KT 4105 9673 $$ MILLER
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 7:06 PM CDT | Tornado Warning | OAX | Butler, Seward | 13 min |
| May 23, 7:13 PM CDT | Special Weather Statement | OAX | Dodge | 47 min |
| May 23, 7:16 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Saunders | 44 min |
| May 23, 7:35 PM CDT | Severe Thunderstorm Warning | OAX | Burt, Washington | 40 min |
| May 23, 7:51 PM CDT | Severe Thunderstorm Warning | OAX | Douglas, Saunders, Washington | 39 min |
| May 23, 8:24 PM CDT | Severe Thunderstorm Warning | OAX | Washington | 36 min |
| May 23, 8:30 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster, Saunders | 30 min |
| May 23, 8:42 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster, Saunders | 33 min |
| May 23, 8:47 PM CDT | Special Weather Statement | OAX | Knox | 28 min |
| May 23, 8:56 PM CDT | Special Weather Statement | OAX | Saunders | 34 min |
| May 23, 8:58 PM CDT | Special Weather Statement | OAX | Lancaster | 47 min |
| May 23, 9:13 PM CDT | Special Weather Statement | OAX | Douglas, Sarpy | 47 min |
| May 23, 9:21 PM CDT | Severe Thunderstorm Warning | OAX | Cass, Lancaster, Saunders | 39 min |
| May 23, 9:35 PM CDT | Special Weather Statement | OAX | Antelope, Cedar, Knox, Pierce | 55 min |
| May 23, 9:43 PM CDT | Severe Thunderstorm Warning | OAX | Cedar, Knox, Pierce | 32 min |
| May 23, 9:57 PM CDT | Special Weather Statement | OAX | Sarpy | 33 min |
| May 23, 10:23 PM CDT | Special Weather Statement | OAX | Antelope, Boone, Madison, Pierce, Platte | 67 min |
| May 23, 10:42 PM CDT | Severe Thunderstorm Warning | OAX | Boone, Colfax, Madison, Platte, Stanton | 48 min |
| May 23, 11:38 PM CDT | Special Weather Statement | OAX | Colfax, Cuming | 67 min |
| May 24, 12:19 AM CDT | Special Weather Statement | OAX | Boone | 116 min |
| May 24, 12:50 AM CDT | Special Weather Statement | OAX | Madison, Platte, Stanton | 25 min |
| May 24, 1:02 AM CDT | Areal Flood Advisory | OAX | Boone, Platte | 3 hr |
| May 24, 1:35 AM CDT | Special Weather Statement | OAX | Butler, Colfax, Platte | 55 min |
| May 24, 2:02 AM CDT | Areal Flood Advisory | OAX | Cuming, Thurston | 3 hr |
| May 24, 3:23 AM CDT | Areal Flood Advisory | OAX | Antelope, Boone, Cedar, Knox, Pierce | 4 hr |
| May 24, 4:42 PM CDT | Special Weather Statement | OAX | Boone, Madison | 48 min |
| May 24, 5:26 PM CDT | Special Weather Statement | OAX | Stanton | 49 min |
| May 24, 5:40 PM CDT | Severe Thunderstorm Warning | OAX | Colfax, Madison, Platte, Stanton | 35 min |
| May 24, 5:55 PM CDT | Tornado Warning | OAX | Colfax, Platte | 22 min |
| May 24, 6:23 PM CDT | Special Weather Statement | OAX | Dodge | 37 min |
Nearby
Tornado Warnings in Nebraska, 2012Every tornado warning in 2012Tornadoes 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.