Alert archive / Nebraska / Special Weather Statements in 2017
Special Weather Statement, NWS Omaha, NE
NWS Omaha, NE issued this special weather statement at Jun 3, 2017, 5:21 PM CDT for Antelope County, Nebraska. It was in force for 39 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
- Jun 3, 2017, 5:21 PM CDT (22:21 UTC)
- Expired
- Jun 3, 2017, 6:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Omaha, NE
County Antelope County, NE
The radar
The Sioux Falls radar (KFSD), 172 km from the middle of the area, began a volume at 22:21 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 12:00Z, 10.4 hours before the alert went out and 174 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
- 13 J/kg
- Mixed-layer CIN
- -188 J/kg
- Mixed-layer LCL
- 1454 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</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 Jun 3, 3:49 PM CDT, 1 hour 32 minutes earlier.
Area forecast discussion, Jun 3, 3:49 PM CDT, 1 hour 32 minutes before
Area Forecast Discussion National Weather Service Omaha/Valley NE 349 PM CDT Sat Jun 3 2017 .SHORT TERM...(Tonight through Tuesday) Issued at 330 PM CDT Sat Jun 3 2017 Forecast concerns in the short term will be coverage of storms related to the cold front tonight/Sunday and if any other storms will form in the warm sector ahead of the front...then temperatures through the period. The 12Z upper air maps from this morning had closed h5 low pressure centered over Saskatchewan with a trough into the central part of the country extending southward with another weaker closed low centered over northern Texas. A weak ridge was still around 110deg west longitude and also around 90deg west. The cooler air at h7 was over Canada with a dip in the isotherms southward into the western High Plains. 1 to 4 deg C h7 dewpoints were pooled ahead of the trough. There was a similar pattern with the h85 dewpoints better over Kansas...however trying to pool ahead of the h85 wind shift. The latest surface analysis and metars has the cold front from near Yankton to Ord and east of McCook. Isolated showers and thunderstorms will be very limited. There are a few storms near Neligh and there was a shower near Beatrice. SPC mesoanalysis shows that there is around 1000 j/kg in northeast Nebraska and 1500 j/kg in southeast Nebraska. Although forcing is weak, convective temperatures will be reached with no inhibition in this area. H7 warm air advection increases tonight in the area of the front in northeast Nebraska. Will include isolated thunderstorms in the vicinity of the front with the heating this afternoon and this evening and the h7 warm air advection tonight. H7 dewpoints will be pooled in this area. The h85 moisture is better to the south with better 12-14 deg C dewpoints and will mention isolated storms there with the heating. The shear is weak...so do not expect organized severe weather, however gusty winds and brief heavy rain are possible due to the slow movement and inverted v sounding. With the weak pattern, there is less of a signal for rain Sunday morning, although there may be some residual activity. Again...with the heating Sunday afternoon a few isolated showers/storms may develop along the front in southeast Neb. and near the MO/KS border with deep moisture and weak convergence. Highs Sunday should be in the 80s and 90s and the backdoor cooling Monday should limit highs to the 80s...with highs Tuesday in the lower 80s. Thunderstorm chances return to the area Tuesday afternoon as south flow returns and a cold front begins to move into the western High Plains. .LONG TERM...(Tuesday night through Saturday) Issued at 330 PM CDT Sat Jun 3 2017 A storm system tracking across Canada will drag a cold front into the area Tuesday afternoon into Wednesday. Expect scattered thunderstorms with this front. A couple of ripples in the northwest flow will bring sporadic thunderstorm chances Thursday through Saturday. && .AVIATION...(For the 12Z TAFS through 12Z Sunday morning) Issued at 630 AM CDT Sat Jun 3 2017 VFR conditions are expected to prevail through the period. A weak cold front will reach northeast Nebraska after 18Z then become stationary and gradually wash out through 06Z. Isolated thunderstorms possible in the vicinity of KOFK with front in the area but to low a chance to mention in TAF at this time. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && SHORT TERM...Zapotocny LONG TERM...Zapotocny AVIATION...Fobert
Hazardous weather outlook, Jun 3, 4:37 PM CDT, 44 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Omaha/Valley NE 437 PM CDT Sat Jun 3 2017 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-041145- 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- 437 PM CDT Sat Jun 3 2017 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 Isolated thunderstorms will occur this evening and into tonight, mainly across northeast Nebraska and west central Iowa. A few storms could produce small hail, gusty winds and brief heavy rain. Isolated storms will be possible Sunday over parts of southeast Nebraska and southwest Iowa, near a weak frontal boundary. The chance of severe storms is low. .DAYS TWO THROUGH SEVEN...SUNDAY NIGHT THROUGH SATURDAY Periodic chances of thunderstorms are possible from Tuesday through Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed tonight or Sunday.
In the hours before
Special weather statement, Jun 3, 4:49 PM CDT, 32 minutes before
Special Weather Statement National Weather Service Omaha/Valley Nebraska 449 PM CDT SAT JUN 3 2017 NEZ011-016-017-032215- Pierce NE-Knox NE-Antelope NE- 449 PM CDT SAT JUN 3 2017 ...Significant Weather Advisory for NORTHWESTERN PIERCE... NORTHEASTERN ANTELOPE AND SOUTH CENTRAL KNOX COUNTIES UNTIL 515 PM CDT... At 449 PM CDT, Doppler radar was tracking a strong thunderstorm 4 miles west of Plainview, or 32 miles northwest of Norfolk. This storm was nearly stationary. Nickel size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Plainview, Creighton and Brunswick. This includes Highway 20 IN Nebraska between mile markers 347 and 360. LAT...LON 4225 9793 4242 9800 4252 9777 4236 9762 TIME...MOT...LOC 2149Z 252DEG 2KT 4236 9788 MILLER
Special weather statement, Jun 3, 5:21 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Omaha/Valley Nebraska
521 PM CDT SAT JUN 3 2017
NEZ016-032300-
Antelope NE-
521 PM CDT SAT JUN 3 2017
...Significant Weather Advisory for NORTHERN ANTELOPE COUNTY UNTIL
600 PM CDT...
At 520 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 4 miles south of Creighton to 6 miles southeast
of Orchard. These storms were nearly stationary.
Dime size hail and winds in excess of 40 mph will be possible with
these storms. Also, heavy rain will occur as the storms remain
nearly stationary, with some spots receiving more than an inch of
rain between 530 PM and 600 PM.
Locations impacted include...
Brunswick and Royal.
This includes Highway 20 IN Nebraska between mile markers 338 and
352.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4232 9784 4220 9816 4231 9823 4243 9793
4243 9784
TIME...MOT...LOC 2220Z 249DEG 1KT 4240 9788 4229 9812
DerganThe office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 4:49 PM CDT | Special Weather Statement | OAX | Pierce | 26 min |
| Jun 3, 5:52 PM CDT | Special Weather Statement | OAX | Cedar | 38 min |
Nearby
Special Weather Statements in Nebraska, 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.