Alert archive / Iowa / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 51, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Apr 15, 2012, 12:41 AM CDT for Mills County, Pottawattamie County, Iowa; Douglas County, Sarpy County, Nebraska. It was in force for 34 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
- Apr 15, 2012, 12:41 AM CDT (05:41 UTC)
- Expired
- Apr 15, 2012, 1:15 AM CDT
- In force
- 34 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Mills County, IA, Pottawattamie County, IA, Douglas County, NE, Sarpy County, NE
The radar
The Omaha radar (KOAX), 59 km from the middle of the area, began a volume at 05:40 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 |
|---|---|---|---|
| Apr 15, 1:05 AM CDT | TSTM WND DMG | 5 Sw Mcclelland, IA | DAMAGE NEAR THE WESTFAIR AMPHITHEATRE...THEN EAST NORTHEAST FOR A MILE OR TWO. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 24 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 14, 10:09 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 14, 6:27 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 5.7 hours before the alert went out and 59 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 871 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 276 m²/s²
- 0-3 km storm-relative helicity
- 483 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
818
WUUS53 KOAX 150541
SVROAX
IAC129-155-NEC055-153-150615-
/O.NEW.KOAX.SV.W.0051.120415T0541Z-120415T0615Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1241 AM CDT SUN APR 15 2012
THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN DOUGLAS COUNTY IN EAST CENTRAL NEBRASKA...
MILLS COUNTY IN SOUTHWESTERN IOWA...
POTTAWATTAMIE COUNTY IN SOUTHWESTERN IOWA...
SARPY COUNTY IN EASTERN NEBRASKA...
* UNTIL 115 AM CDT
* AT 1236 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS
INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM 15 MILES SOUTH OF OMAHA TO OFFUTT AFB...
OR ALONG A LINE EXTENDING FROM 40 MILES NORTHEAST OF LINCOLN TO 70
MILES NORTH OF FALLS CITY...AND MOVING EAST AT 45 MPH. PENNY SIZE
HAIL MAY ALSO ACCOMPANY THE DAMAGING WINDS.
* LOCATIONS IMPACTED INCLUDE...
COUNCIL BLUFFS...BELLEVUE...OFFUTT AFB...GLENWOOD...OAKLAND...
TREYNOR...UNDERWOOD...CARSON...EMERSON...MACEDONIA...CARTER LAKE...
SILVER CITY...HASTINGS...
HENDERSON AND MCCLELLAND.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
HIGHWAY 59 BETWEEN MILE MARKERS 41 AND 52.
INTERSTATE 29 BETWEEN MILE MARKERS 35 AND 56.
INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 1 AND 20.
INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 450 AND 454.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
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.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT SUNDAY MORNING
FOR SOUTHWESTERN IOWA AND EASTERN NEBRASKA.
LAT...LON 4099 9539 4105 9588 4106 9589 4106 9601
4132 9601 4148 9538
TIME...MOT...LOC 0536Z 259DEG 39KT 4126 9597 4105 9598
WIND...HAIL 60MPH 0.75IN
$$
MAYES3 follow-up statements
812
WWUS53 KOAX 150551
SVSOAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1251 AM CDT SUN APR 15 2012
NEC055-153-150625-
/O.CAN.KOAX.SV.W.0051.000000T0000Z-120415T0615Z/
SARPY NE-DOUGLAS NE-
1251 AM CDT SUN APR 15 2012
...THE SEVERE THUNDERSTORM WARNING FOR SARPY AND EXTREME EASTERN
DOUGLAS COUNTIES IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED. A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 5 AM.
LAT...LON 4099 9539 4106 9586 4117 9587 4117 9584
4119 9587 4132 9588 4148 9538
TIME...MOT...LOC 0550Z 247DEG 40KT 4129 9584 4110 9582
$$
IAC129-155-150615-
/O.CON.KOAX.SV.W.0051.000000T0000Z-120415T0615Z/
POTTAWATTAMIE IA-MILLS IA-
1251 AM CDT SUN APR 15 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM
CDT FOR POTTAWATTAMIE AND MILLS COUNTIES...
AT 1245 AM CDT...NATIONAL WEATHER SERVICE METEROLOGISTS INDICATED
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS
IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 9 MILES SOUTH OF COUNCIL BLUFFS TO OFFUTT AFB...OR
ALONG A LINE EXTENDING FROM 14 MILES SOUTHEAST OF OMAHA TO 72
MILES NORTHWEST OF MARYVILLE...MOVING NORTHEAST AT 45 MPH. PENNY
SIZE HAIL MAY ALSO ACCOMPANY THE DAMAGING WINDS.
LOCATIONS IMPACTED INCLUDE...
COUNCIL BLUFFS...GLENWOOD...OAKLAND...TREYNOR...CARSON...EMERSON...
MACEDONIA...SILVER CITY...HASTINGS...HENDERSON AND MCCLELLAND.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
HIGHWAY 59 BETWEEN MILE MARKERS 41 AND 52.
INTERSTATE 29 BETWEEN MILE MARKERS 42 AND 48...AND NEAR MILE
MARKER 56.
INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 3 AND 17.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS 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 4099 9539 4106 9586 4117 9587 4117 9584
4119 9587 4132 9588 4148 9538
TIME...MOT...LOC 0545Z 247DEG 40KT 4129 9584 4110 9582
WIND...HAIL 60MPH 0.75IN
$$
MAYES757
WWUS53 KOAX 150607
SVSOAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
107 AM CDT SUN APR 15 2012
IAC129-155-150615-
/O.CON.KOAX.SV.W.0051.000000T0000Z-120415T0615Z/
POTTAWATTAMIE IA-MILLS IA-
107 AM CDT SUN APR 15 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM
CDT FOR POTTAWATTAMIE AND EXTREME NORTHEASTERN MILLS COUNTIES...
AT 104 AM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 17
MILES SOUTH OF UNDERWOOD TO 7 MILES SOUTH OF TREYNOR...OR ALONG A
LINE EXTENDING FROM 22 MILES SOUTHEAST OF OMAHA TO 71 MILES NORTH
OF MOUND CITY...MOVING EAST AT 45 MPH. PENNY SIZE HAIL MAY ALSO
ACCOMPANY THE DAMAGING WINDS.
LOCATIONS IMPACTED INCLUDE...
OAKLAND...TREYNOR...UNDERWOOD...CARSON...MACEDONIA AND HENDERSON.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
HIGHWAY 59 BETWEEN MILE MARKERS 41 AND 52.
INTERSTATE 80 IN IOWA NEAR MILE MARKER 17.
ALSO A TORNADO WARNING REMAINS IN EFFECT FOR POTTAWATTAMIE COUNTY
UNTIL 130 AM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MILES
PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY
RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4111 9564 4138 9569 4148 9540 4148 9538
4112 9538
TIME...MOT...LOC 0604Z 259DEG 39KT 4132 9564 4113 9562
WIND...HAIL 60MPH 0.75IN
$$
MAYES688
WWUS53 KOAX 150613
SVSOAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
113 AM CDT SUN APR 15 2012
IAC129-155-150625-
/O.EXP.KOAX.SV.W.0051.000000T0000Z-120415T0615Z/
POTTAWATTAMIE IA-MILLS IA-
113 AM CDT SUN APR 15 2012
...THE SEVERE THUNDERSTORM WARNING FOR POTTAWATTAMIE AND EXTREME
NORTHEASTERN MILLS COUNTIES WILL EXPIRE AT 115 AM CDT...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR
PROPERTY. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.
HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THESE
THUNDERSTORMS.
IN ADDITION...SEVERE THUNDERSTORM REDEVELOPMENT REMAINS POSSIBLE...
AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 2 AM.
LAT...LON 4111 9564 4138 9569 4148 9540 4148 9538
4112 9538
TIME...MOT...LOC 0612Z 259DEG 39KT 4132 9564 4113 9562
$$
MAYESWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 14, 9:36 PM CDT, 3 hours 5 minutes earlier.
Area forecast discussion, Apr 14, 9:36 PM CDT, 3 hours 5 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
936 PM CDT SAT APR 14 2012
.DISCUSSION...
TORNADO WATCH CONTINUES FOR SOUTHEAST NEBRASKA UNTIL 2 AM. NO
MAJOR CHANGES REGARDING THAT...ALTHOUGH BEST CONVECTION POTENTIAL
REMAINS ACROSS SOUTH CENTRAL NEBRASKA THROUGH NORTHEAST KANSAS.
SOMEWHAT UNCERTAIN IF THE VERY OVERTURNED ATMOSPHERE HAS HAD
ENOUGH CHANCE TO RECOVER INTO SOUTHEAST NEBRASKA. NEVERTHELESS...
THE POTENTIAL EXISTS DUE TO THE PROXIMITY OF THE WARM FRONT AND
INCREASING LOW LEVEL SHEAR.
SECONDARY CONCERN FOR SUNDAY WILL BE INCREASING SOUTH TO SOUTHWEST
WINDS AHEAD OF THE SURFACE LOW...WITHIN THE OVERALL DRY SLOT THAT
SHOULD BE MOVING INTO THE AREA. WITH DEEPENING SURFACE LOW
PRESSURE...THE GRADIENT BECOMES QUITE STRONG AND WINDS SHOULD
INCREASE TO 30 TO 40 MPH...WITH GUSTS UP TO 45 TO 55 MPH WINDS
POSSIBLE. 18Z MAV GUIDANCE MAY EVEN SUGGEST BORDERLINE HIGH WIND
WARNING CONDITIONS. OPTED TO ISSUE AN ADVISORY AT THIS TIME...
ESPECIALLY CONSIDERING THAT WE HAVE HAD SOME DAMAGE IN SOUTHEAST
NEBRASKA...THUS THE HIGH WINDS MAY COMPOUND THE CLEANUP. COULD
ALSO SEE ADVISORY LEVEL WINDS IN NORTHEAST NEBRASKA ON THE BACK
SIDE OF THE SURFACE LOW PRESSURE SYSTEM.
ONE MORE DEVELOPING CONCERN SEEMS TO BE THE POTENTIAL FOR MINI
SUPERCELLS ALONG THE NE/SD BORDER SUNDAY AFTERNOON. THIS WILL BE
ADDRESSED IN THE NEXT FORECAST.
DEWALD
&&
.PREV DISCUSSION... /ISSUED 255 PM CDT SAT APR 14 2012/
DISCUSSION...
SIGNIFICANT CONVECTIVE EVENT WILL CONTINUE THROUGH THE EVENING
ACROSS THE AREA WITH DRY SLOT WORKING IN AFTER MIDNIGHT AND
EXTENDING THROUGH SUNDAY MORNING. COLD FRONT MOVES THROUGH MOST OF
THE AREA SUNDAY AFTERNOON WITH SOME LINGERING SHOWERS MAINLY
OVER THE NORTHERN HALF OF THE FORECAST AREA SUNDAY AFTERNOON INTO
SUNDAY EVENING. GUSTY NORTHWEST WINDS ALSO LIKELY ON SUNDAY WITH
POTENTIAL FOR A WIND ADVISORY BUT WILL PASS TO LATER SHIFTS TO
HANDLE ANY ISSUANCE. NEXT UPPER WAVE COMING ACROSS THE CENTRAL
PLAINS LATE MONDAY INTO MONDAY NIGHT MAY TRIGGER SOME SHOWERS BUT
SPOTTY ENOUGH TO LIMIT MENTION AT THIS TIME.
LOAD AND GO TODAY WITH THE EXTENDED PERIOD WITH LITTLE CHANGE
TO PREVIOUS TRENDS.
AVIATION...
18Z TAFS FOR KOMA...KLNK AND KOFK.
PERIODS OF STRONG CONVECTION EXPECTED THROUGH 06Z WITH
DRY SLOT WORKING IN BETWEEN 06Z AND 12Z. STRONG SOUTH TO
SOUTHWEST FLOW SURFACE AND ALOFT WILL CONTINUE THROUGH THE PERIOD.
&&
.OAX WATCHES/WARNINGS/ADVISORIES...
NE...WIND ADVISORY FROM 11 AM TO 7 PM CDT SUNDAY FOR NEZ015-018-
032>034-042>045-050>053-065>068-078-088>093.
IA...WIND ADVISORY FROM 11 AM TO 7 PM CDT SUNDAY FOR IAZ043-055-056-
069-079-080-090-091.
&&Hazardous weather outlook, Apr 14, 11:17 PM CDT, 1 hour 24 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1117 PM CDT SAT APR 14 2012 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-151830- MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT- PAGE-KNOX-CEDAR-THURSTON-ANTELOPE-PIERCE-WAYNE-BOONE-MADISON- STANTON-CUMING-BURT-PLATTE-COLFAX-DODGE-WASHINGTON-BUTLER- SAUNDERS-DOUGLAS-SARPY-SEWARD-LANCASTER-CASS-OTOE-SALINE- JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON- 1117 PM CDT SAT APR 14 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST IOWA...WEST CENTRAL IOWA...EAST CENTRAL NEBRASKA...NORTHEAST NEBRASKA AND SOUTHEAST NEBRASKA. .DAY ONE...TONIGHT AND SUNDAY STRONG THUNDERSTORMS ARE STILL POSSIBLE ACROSS THE OUTLOOK AREA OVERNIGHT. A TORNADO WATCH REMAINS IN EFFECT FOR PORTIONS OF SOUTHEAST NEBRASKA AS A WARM FRONT CONTINUES TO LIFT THROUGH THE REGION. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE REMAINDER OF NORTHEAST NEBRASKA AND WESTERN IOWA. IF THUNDERSTORMS DEVELOP ALONG THE WARM FRONT...ALL MODES OF SEVERE WEATHER WITH TORNADOES...LARGE HAIL AND DAMAGING WINDS WOULD BE POSSIBLE IN THIS AREA. ACROSS NORTHEAST AND EAST CENTRAL NEBRASKA AND WESTERN IOWA...LARGE HAIL AND DAMAGING WINDS WOULD BE THE PRIMARY HAZARDS. AHEAD OF A VERY STRONG AREA OF LOW PRESSURE ON SUNDAY...SOUTH TO SOUTHWEST WINDS WILL INCREASE TO 30 TO 40 MPH WITH GUSTS IN EXCESS OF 50 MPH POSSIBLE. A WIND ADVISORY HAS BEEN ISSUED FOR MOST OF EASTERN NEBRASKA AND WESTERN IOWA FOR LATE SUNDAY MORNING THROUGH SUNDAY EVENING. IN ADDITION...THUNDERSTORMS MAY DEVELOP ALONG THE WARM FRONT NEAR THE NEBRASKA AND SOUTH DAKOTA BORDER REGION SUNDAY AFTERNOON. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY AS THE SURFACE LOW PRESSURE MOVES THROUGH THE REGION...STRONG NORTHWEST WINDS OF 25 TO 35 MPH WITH HIGHER GUSTS WILL BE POSSIBLE IN NORTHEAST NEBRASKA SUNDAY EVENING. A FEW THUNDERSTORMS MAY OCCUR ON MONDAY INTO TUESDAY NIGHT THEN AGAIN FROM THURSDAY INTO FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY STILL BE BE NEEDED IN SOUTHEAST NEBRASKA THROUGH EARLY SUNDAY MORNING.
In the hours before
Local storm report, Apr 14, 11:49 PM CDT, 52 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1149 PM CDT SAT APR 14 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1143 PM FUNNEL CLOUD 1 NNE LINCOLN 40.83N 96.68W
04/14/2012 LANCASTER NE TRAINED SPOTTER
NORTHEAST OF AIRFIELD
&&
KERNLocal storm report, Apr 15, 12:08 AM CDT, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1208 AM CDT SUN APR 15 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1208 AM HAIL 4 SW WAVERLY 40.88N 96.58W
04/15/2012 M0.75 INCH LANCASTER NE STORM CHASER
&&
VDEWALDSpecial weather statement, Apr 15, 12:09 AM CDT, 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1209 AM CDT SUN APR 15 2012
IAZ090-091-NEZ068-091>093-150545-
FREMONT IA-PAGE IA-RICHARDSON NE-NEMAHA NE-OTOE NE-PAWNEE NE-
1209 AM CDT SUN APR 15 2012
...SIGNIFICANT WEATHER ADVISORY FOR FREMONT...PAGE...RICHARDSON...
NEMAHA...SOUTHEASTERN OTOE AND PAWNEE COUNTIES...
STRONG WINDS...NOT ASSOCIATED WITH THUNDERSTORMS...ARE EXPECTED
ACROSS PARTS OF SOUTHEAST NEBRASKA AND SOUTHWEST IOWA THROUGH ABOUT
130 AM. THE STRONG WINDS WILL GUST FROM THE SOUTH AT 20 TO 35 MPH
WITH GUSTS TO 60 MPH. THIS CAN BLOW AROUND SMALL UNSECURE OBJECTS
OVER THE NEXT HOUR OR SO.
LOCATIONS IMPACTED INCLUDE...
FALLS CITY...CLARINDA...SHENANDOAH...AUBURN...SIDNEY...HAMBURG...
PAWNEE CITY...HUMBOLDT...ESSEX...PERU...FARRAGUT...RIVERTON...
TABLE ROCK...SHUBERT...COIN...VERDON...STELLA...COLLEGE SPRINGS...
RULO AND DAWSON.
LAT...LON 4024 9613 4026 9607 4033 9606 4089 9555
4089 9493 4058 9492 4058 9578 4052 9574
4056 9569 4055 9565 4047 9569 4046 9564
4031 9566 4023 9547 4018 9548 4012 9539
4005 9542 4000 9531 4000 9531 4000 9635
TIME...MOT...LOC 0507Z 224DEG 49KT 4037 9583
BOUSTEADSpecial weather statement, Apr 15, 12:12 AM CDT, 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1212 AM CDT SUN APR 15 2012
IAZ069-NEZ045-052-150545-
POTTAWATTAMIE IA-DOUGLAS NE-WASHINGTON NE-
1212 AM CDT SUN APR 15 2012
...SIGNIFICANT WEATHER ADVISORY FOR POTTAWATTAMIE...DOUGLAS AND
SOUTHEASTERN WASHINGTON COUNTIES UNTIL 1245 AM CDT...
AT 1207 AM CDT...NWS METEOROLOGISTS REPORTED A STRONG THUNDERSTORM
NEAR VALLEY...OR 15 MILES WEST OF OMAHA...MOVING EAST AT 45 MPH.
HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 45 MPH WILL BE
POSSIBLE WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
OMAHA...COUNCIL BLUFFS...MILLARD...RALSTON...ELKHORN...VALLEY...
FORT CALHOUN...UNDERWOOD...WATERLOO...CARTER LAKE...BENNINGTON...
BOYS TOWN...CRESCENT...MCCLELLAND AND WASHINGTON.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
HIGHWAY 275 NEAR MILE MARKER 167.
HIGHWAY 92 BETWEEN MILE MARKERS 463 AND 466.
INTERSTATE 29 BETWEEN MILE MARKERS 47 AND 71.
INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 1 AND 17.
INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 446 AND 454.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT SUNDAY MORNING
FOR SOUTHWESTERN IOWA AND EASTERN NEBRASKA.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT
SUNDAY MORNING FOR SOUTHWESTERN IOWA AND EASTERN NEBRASKA.
LAT...LON 4118 9571 4119 9633 4121 9636 4123 9637
4127 9635 4131 9641 4136 9642 4137 9644
4150 9599 4150 9562
TIME...MOT...LOC 0507Z 251DEG 40KT 4130 9632
MAYESLocal storm report, Apr 15, 12:26 AM CDT, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1226 AM CDT SUN APR 15 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1159 PM HEAVY RAIN 4 W NORFOLK 42.03N 97.50W
04/14/2012 M4.08 INCH MADISON NE CO-OP OBSERVER
TOTAL RAINFALL FROM 6 AM TO 1159 PM
&&
KLISHLocal storm report, Apr 15, 12:36 AM CDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1236 AM CDT SUN APR 15 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1225 AM TSTM WND GST S SOUTH BEND 41.00N 96.25W
04/15/2012 E70 MPH CASS NE EMERGENCY MNGR
&&
VDEWALDThe office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 7:02 PM CDT | Areal Flood Advisory | OAX | Mills, Pottawattamie | 58 min |
| Apr 14, 9:17 PM CDT | Wind Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 31 hr |
| Apr 14, 11:23 PM CDT | River Flood Warning | OAX | Page | 16 hr |
| Apr 15, 12:09 AM CDT | Special Weather Statement | OAX | Fremont, Page | 36 min |
| Apr 15, 12:57 AM CDT | Tornado Warning | OAX | Pottawattamie | 15 min |
| Apr 15, 2:05 AM CDT | Special Weather Statement | OAX | Fremont, Page | 85 min |
| Apr 15, 6:12 AM CDT | River Flood Warning | OAX | Fremont | 16 hr |
| Apr 14, 9:25 PM CDT | Special Weather Statement | OAX | Platte | 35 min |
| Apr 14, 9:49 PM CDT | Severe Thunderstorm Warning | OAX | Cedar, Pierce, Wayne | 26 min |
| Apr 14, 10:51 PM CDT | Special Weather Statement | OAX | Cedar, Pierce | 24 min |
| Apr 14, 11:01 PM CDT | Severe Thunderstorm Warning | OAX | Saline, Seward | 29 min |
| Apr 14, 11:26 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster, Seward | 34 min |
| Apr 14, 11:31 PM CDT | Tornado Warning | OAX | Lancaster, Seward | 29 min |
| Apr 14, 11:52 PM CDT | Severe Thunderstorm Warning | OAX | Cass, Lancaster, Sarpy, Saunders | 38 min |
| Apr 15, 12:12 AM CDT | Special Weather Statement | OAX | Douglas | 33 min |
| Apr 15, 12:28 AM CDT | Severe Thunderstorm Warning | OAX | Cass, Douglas, Sarpy | 21 min |
| Apr 15, 10:23 AM CDT | River Flood Warning | OAX | Nemaha | 11 hr |
| Apr 15, 10:23 AM CDT | River Flood Warning | OAX | Richardson | 21 hr |
| Apr 15, 1:53 PM CDT | Special Weather Statement | OAX | Knox | 67 min |
| Apr 15, 2:06 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox | 54 min |
| Apr 15, 2:11 PM CDT | Tornado Warning | OAX | Knox | 49 min |
| Apr 15, 2:30 PM CDT | Tornado Warning | OAX | Knox | 39 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2012Severe 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.