Alert archive / Nebraska / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 218, NWS Hastings, NE

September 1, 2018Franklin County, Webster County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Sep 1, 2018, 12:15 AM CDT for Franklin County, Webster County, Nebraska. It was in force for 22 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 1, 2018, 12:15 AM CDT (05:15 UTC)
Expired
Sep 1, 2018, 12:37 AM CDT
In force
22 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Franklin County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 29 km from the middle of the area, began a volume at 05:17 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 5.3 hours before the alert went out and 190 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.

Skew-T log-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2018-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1554 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2018-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1554 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
2614 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

What 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 Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 31, 8:57 PM CDT, 3 hours 18 minutes earlier.

Area forecast discussion, Aug 31, 8:57 PM CDT, 3 hours 18 minutes before
<!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>
Hazardous weather outlook, Aug 31, 8:36 PM CDT, 3 hours 39 minutes before
Hazardous Weather Outlook
National Weather Service Hastings NE
836 PM CDT Fri Aug 31 2018

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
011200-
Phillips-Smith-Jewell-Rooks-Osborne-Mitchell-Valley-Greeley-Nance-
Sherman-Howard-Merrick-Polk-Dawson-Buffalo-Hall-Hamilton-York-
Gosper-Phelps-Kearney-Adams-Clay-Fillmore-Furnas-Harlan-Franklin-
Webster-Nuckolls-Thayer-
836 PM CDT Fri Aug 31 2018

This Hazardous Weather Outlook is for south central Nebraska and
portions of north central Kansas.

.DAY ONE...Overnight.

As the night wears on, at least isolated to scattered thunderstorm
activity will become increasingly likely within the outlook area.
While most of this activity will not be severe, there is a
Marginal Risk that a few storms could be, with the main hazards
being hail up to around ping pong ball size, and perhaps wind
gusts up to around 60 MPH.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

This looks to be a fairly active weather pattern, with at least
small chances for thunderstorms each day and night.

As for severe storm potential, most of the outlook area is in a
Marginal Risk of severe storms for Saturday afternoon and evening,
with primarily eastern portions of the area also under a Marginal
Risk for Sunday. Additional chances for severe storms are
possible, but it is too soon to confidently assess this potential
beyond Sunday.

In addition, heavy rainfall will be possible at times through the
next several days, including the Labor Day weekend, possibly
promoting localized flooding especially in low-lying areas.
Although amounts will certainly vary somewhat from one location
to another, the outlook area as a whole is expected to generally
receive between 2 and 5 inches over the course of the next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will probably not be needed through tonight,
but any reports of possible hail or damaging winds would be
appreciated.

&&

More information may be obtained at the following web page:
   https://www.weather.gov/hastings

Pfannkuch

In the hours before

Special weather statement, Aug 31, 11:15 PM CDT, 1 hour before
Special Weather Statement
National Weather Service Hastings NE
1115 PM CDT FRI AUG 31 2018

KSZ005-017-010445-
Rooks KS-Phillips KS-
1115 PM CDT FRI AUG 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ROOKS AND PHILLIPS
COUNTIES UNTIL 1145 PM CDT...

At 1115 PM CDT, Doppler radar was tracking a strong thunderstorm near
Logan, or 12 miles southwest of Phillipsburg, moving northeast at 40
mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Phillipsburg, Logan, Glade and Speed.

LAT...LON 3942 9959 3941 9960 3957 9960 3957 9963
      3971 9963 3991 9933 3963 9912
TIME...MOT...LOC 0415Z 232DEG 34KT 3963 9950

Mangels
Special weather statement, Aug 31, 11:41 PM CDT, 34 minutes before
Special Weather Statement
National Weather Service Hastings NE
1141 PM CDT FRI AUG 31 2018

NEZ060-072-010530-
Dawson NE-Gosper NE-
1141 PM CDT FRI AUG 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN GOSPER AND
SOUTHWESTERN DAWSON COUNTIES UNTIL 1230 AM CDT...

At 1140 PM CDT, Doppler radar was tracking a strong thunderstorm near
Eustis, or 20 miles east of Curtis, moving northeast at 20 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Lexington, Elwood, Johnson Lake and Farnam.

LAT...LON 4088 9984 4063 9964 4054 9998 4070 9998
      4070 10022 4071 10022
TIME...MOT...LOC 0440Z 241DEG 17KT 4062 10012

Mangels
Special weather statement, Aug 31, 11:57 PM CDT, 18 minutes before
Special Weather Statement
National Weather Service Hastings NE
1157 PM CDT FRI AUG 31 2018

KSZ005-006-NEZ083-084-010545-
Phillips KS-Smith KS-Franklin NE-Harlan NE-
1157 PM CDT FRI AUG 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SMITH...NORTHEASTERN
PHILLIPS...FRANKLIN AND SOUTHEASTERN HARLAN COUNTIES UNTIL 1245 AM
CDT...

At 1157 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles southeast of Woodruff to 9 miles south
of Harlan County Dam to 8 miles north of Kensington. Movement was
northeast at 35 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Franklin, Campbell, Republican City, Upland, Naponee, Bloomington,
Riverton and Harlan County Dam.

LAT...LON 4031 9920 4033 9873 4002 9873 3980 9908
      3988 9920 3992 9946
TIME...MOT...LOC 0457Z 209DEG 32KT 3995 9931 3994 9917 3989 9908

Rossi
Special weather statement, Sep 1, 12:03 AM CDT, 12 minutes before
Special Weather Statement
National Weather Service Hastings NE
1203 AM CDT SAT SEP 1 2018

NEZ060-061-072-073-010545-
Buffalo NE-Phelps NE-Dawson NE-Gosper NE-
1203 AM CDT SAT SEP 1 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PHELPS...WESTERN
BUFFALO...NORTHEASTERN GOSPER AND EASTERN DAWSON COUNTIES UNTIL 1245
AM CDT...

At 1203 AM CDT, Doppler radar was tracking a strong thunderstorm over
Lexington, moving northeast at 35 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Lexington, Elm Creek, Overton, Odessa, Amherst, Sumner, Miller and
Eddyville.

LAT...LON 4088 9990 4105 9959 4105 9922 4070 9923
      4060 9966
TIME...MOT...LOC 0503Z 238DEG 31KT 4077 9978

Rossi

The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 31, 11:41 PM CDTSpecial Weather StatementGIDDawson49 min
Aug 31, 11:57 PM CDTSpecial Weather StatementGIDFranklin48 min
Sep 1, 12:03 AM CDTSpecial Weather StatementGIDDawson42 min
Sep 1, 12:21 AM CDTSpecial Weather StatementGIDFurnas, Phelps39 min
Sep 1, 12:53 AM CDTSevere Thunderstorm WarningGIDFranklin, Harlan, Kearney, Phelps52 min
Sep 1, 1:13 AM CDTSpecial Weather StatementGIDHall, Phelps47 min
Sep 1, 1:23 AM CDTSevere Thunderstorm WarningGIDAdams, Kearney52 min
Sep 1, 1:51 AM CDTSpecial Weather StatementGIDWebster39 min
Sep 1, 2:03 AM CDTSpecial Weather StatementGIDHamilton42 min
Sep 1, 2:06 AM CDTSevere Thunderstorm WarningGIDHamilton, Merrick39 min
Sep 1, 2:22 AM CDTSevere Thunderstorm WarningGIDHamilton, Merrick, Nance, Polk38 min
Sep 1, 2:32 AM CDTSpecial Weather StatementGIDPolk, York43 min
Sep 1, 5:05 PM CDTFlash Flood WatchGIDAdams, Clay, Fillmore, Franklin, Furnas, Hamilton and 7 more4 days
Aug 31, 11:15 PM CDTSpecial Weather StatementGIDPhillips30 min
Sep 1, 4:51 PM CDTSpecial Weather StatementGIDRooks24 min
Sep 1, 5:07 PM CDTSevere Thunderstorm WarningGIDOsborne, Rooks38 min
Sep 1, 5:29 PM CDTSevere Thunderstorm WarningGIDOsborne46 min
Sep 1, 5:50 PM CDTSpecial Weather StatementGIDJewell25 min
Sep 1, 5:55 PM CDTSevere Thunderstorm WarningGIDJewell35 min
Sep 1, 6:03 PM CDTSevere Thunderstorm WarningGIDMitchell, Osborne27 min
Sep 1, 6:04 PM CDTSevere Thunderstorm WarningGIDJewell, Mitchell, Osborne, Smith26 min
Sep 1, 6:28 PM CDTSevere Thunderstorm WarningGIDMitchell, Osborne32 min
Sep 1, 6:29 PM CDTSevere Thunderstorm WarningGIDJewell, Mitchell46 min
Sep 1, 6:54 PM CDTSpecial Weather StatementGIDMitchell36 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2018Every severe thunderstorm warning in 2018

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.