Alert archive / Nebraska / Special Weather Statements in 2017
Special Weather Statement, NWS Omaha, NE
NWS Omaha, NE issued this special weather statement at Aug 20, 2017, 2:28 AM CDT for Nemaha County, Pawnee County, Richardson County, Nebraska; Fremont County, Page County, Iowa. It was in force for 47 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
- Aug 20, 2017, 2:28 AM CDT (07:28 UTC)
- Expired
- Aug 20, 2017, 3:15 AM CDT
- In force
- 47 min
- Issued by
- NWS Omaha, NE
Counties Fremont County, IA, Page County, IA, Nemaha County, NE, Pawnee County, NE, Richardson County, NE
The radar
The Omaha radar (KOAX), 125 km from the middle of the area, began a volume at 07:32 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 nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 7.5 hours before the alert went out and 125 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
- 505 J/kg
- Mixed-layer CIN
- -393 J/kg
- Mixed-layer LCL
- 1964 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 153 m²/s²
- 0-3 km storm-relative helicity
- 269 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 20, 12:23 AM CDT, 2 hours 5 minutes earlier.
Area forecast discussion, Aug 20, 12:23 AM CDT, 2 hours 5 minutes before
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</html>Hazardous weather outlook, Aug 19, 3:45 PM CDT, 10 hours 43 minutes before
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 345 PM CDT Sat Aug 19 2017 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-201045- 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- 345 PM CDT Sat Aug 19 2017 This hazardous weather outlook is for parts of eastern Nebraska and southwest Iowa. .DAY ONE...tonight and Sunday. Scattered thunderstorms are expected to move into the area this evening and tonight. There is a marginal risk of severe thunderstorms in much of eastern Nebraska, where large hail and damaging winds are possible. In western Iowa, storms could produce small hail and gusty winds. There is also a risk of heavy rain in some of the storms. Thunderstorm chances will linger into Sunday. At this time, the chance of severe storms is low. .DAYS TWO THROUGH SEVEN...Sunday night through Saturday. Thunderstorm chances will linger in the forecast from Sunday night into Tuesday morning. Isolated severe thunderstorms will be possible on Sunday evening into Sunday night, along with heavy rain. It appears that the potential for severe storms and heavy rain will be higher from Monday evening into Monday night. Much of the mid part of the week from Tuesday night into Friday should be dry, but thunderstorm chances return by Friday night. ..SPOTTER INFORMATION STATEMENT... Spotter activation is not expected to be needed tonight or Sunday.
In the hours before
Special weather statement, Aug 19, 9:55 PM CDT, 4 hours 33 minutes before
Special Weather Statement
National Weather Service Omaha/Valley Nebraska
955 PM CDT SAT AUG 19 2017
NEZ030-031-042-200345-
Madison NE-Platte NE-Boone NE-
955 PM CDT SAT AUG 19 2017
...Significant Weather Advisory for SOUTHERN MADISON...NORTHWESTERN
PLATTE AND NORTHEASTERN BOONE COUNTIES UNTIL 1045 PM CDT...
At 955 PM CDT, Doppler radar was tracking a strong thunderstorm over
Albion, or 36 miles northwest of Columbus, moving east at 35 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Madison, Albion, Newman Grove, St. Edward, Lindsay, Humphrey, Tarnov,
Cornlea and Loretto.
This includes Highway 81 in Nebraska near mile marker 140.
A severe thunderstorm watch remains in effect until 100 AM CDT for
northeastern Nebraska.
LAT...LON 4185 9804 4183 9746 4161 9748 4149 9763
4151 9771 4152 9771 4153 9775 4165 9816
TIME...MOT...LOC 0255Z 288DEG 31KT 4170 9798
DerganSpecial weather statement, Aug 19, 10:43 PM CDT, 3 hours 45 minutes before
Special Weather Statement
National Weather Service Omaha/Valley Nebraska
1043 PM CDT SAT AUG 19 2017
NEZ031>033-042>044-200430-
Stanton NE-Madison NE-Platte NE-Colfax NE-Cuming NE-Dodge NE-
1043 PM CDT SAT AUG 19 2017
...Significant Weather Advisory for SOUTHEASTERN MADISON...
SOUTHWESTERN CUMING...NORTHERN COLFAX...NORTHEASTERN PLATTE...
NORTHWESTERN DODGE AND SOUTHERN STANTON COUNTIES UNTIL 1130 PM CDT...
At 1043 PM CDT, Doppler radar was tracking a strong thunderstorm near
Creston, or 16 miles north of Columbus, moving east at 40 mph.
Dime size hail and wind gusts of 50 to 55 mph will be possible with
this storm.
Locations impacted include...
Clarkson, Dodge, Howells, Leigh, Snyder, Creston, 9 Miles North Of
Schuyler and Maple Creek Recreation Area.
A severe thunderstorm watch remains in effect until 100 AM CDT for
northeastern Nebraska.
LAT...LON 4156 9744 4175 9744 4179 9681 4168 9674
4155 9682
TIME...MOT...LOC 0343Z 272DEG 33KT 4168 9734
DerganLocal storm report, Aug 19, 10:56 PM CDT, 3 hours 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1056 PM CDT SAT AUG 19 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1050 PM TSTM WND GST 6 SW LEIGH 41.64N 97.32W
08/19/2017 E70 MPH PLATTE NE TRAINED SPOTTER
A FEW TREES SNAPPED.
&&
BKERNSpecial weather statement, Aug 20, 12:21 AM CDT, 2 hours 7 minutes before
Special Weather Statement
National Weather Service Omaha/Valley Nebraska
1221 AM CDT SUN AUG 20 2017
NEZ050-051-065-066-200600-
Saunders NE-Seward NE-Butler NE-Lancaster NE-
1221 AM CDT SUN AUG 20 2017
...Significant Weather Advisory for NORTHWESTERN LANCASTER...NORTHERN
SEWARD...SOUTHERN BUTLER AND WESTERN SAUNDERS COUNTIES UNTIL 100 AM
CDT...
At 1221 AM CDT, Doppler radar was tracking a strong thunderstorm 6
miles southeast of Gresham, or 17 miles northeast of York, moving
northeast at 40 mph.
Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.
Locations impacted include...
Seward, Utica, Brainard, Staplehurst, Garland, Dwight, Bee, Ulysses,
Surprise and Tamora.
This includes Highway 92 in Nebraska near mile marker 428.
A severe thunderstorm watch remains in effect until 100 AM CDT for
southeastern and east central Nebraska.
LAT...LON 4121 9700 4110 9685 4090 9694 4084 9737
4111 9737
TIME...MOT...LOC 0521Z 246DEG 34KT 4098 9730
DerganSpecial weather statement, Aug 20, 1:03 AM CDT, 1 hour 25 minutes before
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</html>Special weather statement, Aug 20, 2:28 AM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 9:55 PM CDT | Special Weather Statement | OAX | Boone | 50 min |
| Aug 19, 10:08 PM CDT | Severe Thunderstorm Warning | OAX | Boone, Madison, Platte | 37 min |
| Aug 19, 10:43 PM CDT | Special Weather Statement | OAX | Colfax | 47 min |
| Aug 19, 10:55 PM CDT | Severe Thunderstorm Warning | OAX | Colfax, Dodge, Saunders | 35 min |
| Aug 19, 11:35 PM CDT | Flash Flood Watch | OAX | Butler, Colfax, Lancaster, Platte, Saline, Saunders and 1 more | 7 hr |
| Aug 19, 11:57 PM CDT | Severe Thunderstorm Warning | OAX | Douglas, Sarpy | 33 min |
| Aug 20, 12:21 AM CDT | Special Weather Statement | OAX | Seward | 39 min |
| Aug 20, 1:03 AM CDT | Special Weather Statement | OAX | Gage, Johnson, Lancaster, Otoe | 42 min |
| Aug 20, 4:14 AM CDT | Special Weather Statement | OAX | Butler | 31 min |
| Aug 20, 4:36 AM CDT | Special Weather Statement | OAX | Seward | 24 min |
| Aug 20, 4:52 AM CDT | Special Weather Statement | OAX | Seward | 23 min |
| Aug 20, 4:54 AM CDT | Special Weather Statement | OAX | Lancaster | 36 min |
| Aug 20, 5:01 AM CDT | Severe Thunderstorm Warning | OAX | Lancaster | 29 min |
| Aug 20, 5:17 AM CDT | Special Weather Statement | OAX | Cass | 28 min |
| Aug 20, 6:01 AM CDT | Special Weather Statement | OAX | Saunders | 44 min |
| Aug 20, 7:12 AM CDT | Areal Flood Warning | OAX | Seward | 12 hr |
| Aug 20, 7:42 AM CDT | River Flood Warning | OAX | Butler | 41 hr |
| Aug 20, 7:42 AM CDT | River Flood Warning | OAX | Seward | 35 hr |
| Aug 20, 7:42 AM CDT | River Flood Warning | OAX | Saline | 4 days |
| Aug 20, 7:42 AM CDT | River Flood Warning | OAX | Seward | 3 days |
| Aug 20, 8:14 AM CDT | Special Weather Statement | OAX | Sarpy | 46 min |
| Aug 20, 8:20 AM CDT | Severe Thunderstorm Warning | OAX | Cass, Sarpy, Saunders | 25 min |
| Aug 20, 8:58 AM CDT | Special Weather Statement | OAX | Cass | 47 min |
| Aug 20, 9:23 AM CDT | Special Weather Statement | OAX | Mills | 22 min |
| Aug 20, 10:04 AM CDT | Special Weather Statement | OAX | Fremont | 41 min |
| Aug 20, 10:46 AM CDT | Special Weather Statement | OAX | Mills | 44 min |
| Aug 20, 11:29 AM CDT | Areal Flood Advisory | OAX | Mills | 3 hr |
| Aug 20, 11:37 AM CDT | Special Weather Statement | OAX | Mills, Montgomery | 53 min |
Nearby
Special Weather Statements in Nebraska, 2017Special Weather Statements in Iowa, 2017Every special weather statement in 2017
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.