Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 67, NWS Hastings, NE

May 21, 1998Clay County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at May 21, 1998, 12:47 PM CDT for Clay County, Nebraska. It was in force for 63 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 21, 1998, 12:47 PM CDT (17:47 UTC)
Expired: May 21, 1998, 1:50 PM CDT
In force: 63 min
Issued by: NWS Hastings, NE
Area: Whole counties

County Clay County, NE

What was reported inside it

Time	Report	Where	Remark
May 21, 1:00 PM CDT	Hail 1.75	Harvard, NE
May 21, 1:26 PM CDT	Hail 0.75	Sutton, NE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 21, 9:45 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 5.8 hours before the alert went out and 167 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 38 J/kg
Mixed-layer CIN: -307 J/kg
Mixed-layer LCL: 558 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 May 21, 2:35 AM CDT, 10 hours 12 minutes earlier.

Area forecast discussion, May 21, 2:35 AM CDT, 10 hours 12 minutes before

CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
235 AM CDT THU MAY 21 1998

...MAIN CONCERN WILL BE TIMING PERIODS OF CONVECTION OVER THE NEXT FEW
   DAYS...

00Z UAA CONTD TO HAVE UPPER RIDGE FROM THE GULF COAST ON INTO THE NRN
PLAINS. NO BIG SIGNS OF WEAKENING YET...ASIDE FROM SOME HGHT FALLS
INTO SRN CA/AZ AS UPPER LO ON OR COAST DROPS SE. THIS LOW FCST TO
EDGE TO THE EAST OVER NEXT FEW DAYS WHICH WILL PUSH RIDGE AXIS
SLIGHTLY TO THE EAST. THIS WILL MEAN BETTER DYNAMICS OVERALL FOR US
AS TIME GOES ON. OTHERWISE...H85 FRONT REMAINS DRAPED OVER AREA FROM
LOW PRES IN WY SE TO NE/KS BORDER AND DUE EAST FROM THERE. GOOD
MOISTURE POOLING FROM WRN MO INTO ERN KS...BUT LLJ IS PRETTY WK
TONIGHT.

06Z SFC CHART HAD FRONT DRAPED FROM CNTRL MO ACROSS CNTRL KS TO WK
LO IN SW KS THEN ON NW INTO SE WY/NRN UT AREA. HI PRES ENCOMPASSED
MUCH OF THE UPPER MIDWEST. LL MOISTURE STILL ABUNDANT WITH DWPTS IN
THE MID 60S TO LOWER 60S FROM JUST NORTH OF SFC FRONT SOUTH.

MDLS LIFT DECENT VORT OUT OVER AREA TODAY. THIS WAVE SHOWS UP ON SAT
PIX BUT DOESNT EXACTLY STAND OUT. ETA/NGM CONSISTENT IN FIRING MORE
STORMS ACROSS NRN AND EVENTUALLY ERN AREAS ABOUT DAYBREAK WITH THIS
WAVE & ITS INTERACTION WITH CONVECTIVE REMAINS CURRENTLY SKIRTING THE
AREA. HENCE...WILL LEAVE 30% POPS IN FCST THIS MORNING...AT LEAST FOR
A BULK OF CWA.

NEXT WAVE BEHIND IT IS MUCH STRONGER AND IS PROGGED TO AFFECT AREA
LATE TODAY AND TONIGHT. GIVEN LOCATION OF SFC FRONT AND MOISTURE
POOL IN PLACE...ADD THE DYNAMICS WITH THIS STRONG WAVE...AND YOU GET
SPCS MODERATE RISK OVER WRN NEB. WILL BUMP POPS UP TO LIKELY
OVERNIGHT...AND 30% POPS IN FCST FRI AM SEEM REASONABLE WITH SOME
LEFTOVER ACTIVITY.

BASICALLY LOOKS ACTIVE LATE FRIDAY (INTO THE EVENING) AS WELL AS SFC
LO IN ERN CO WINDS UP AND DRY SLOT PUNCHES NE INTO CWA. WILL FOCUS
LATE DAY CONVECTION IN THE ERN AND NRN CWA.

AS FOR TEMPS...NEXT FEW DAYS SHOULDNT BE TOO BAD AS WE REMAIN JUST
NORTH OF FRONT. WILL RANGE TEMPS FROM THE UPPER 70S NE TO LOWER 80S
SW. NRN KS WILL BE WARMER RIGHT AT FRONTAL BOUNDARY AND HAVE NO QUALMS
GOING 85 TO 90. POPS THRU KS WILL BE LOWER WITH NOTURNAL CONVECTION
LIKELY FOCUSING NORTH OF FRONT. WILL LEAVE 20S AND 30S IN FOR POPS
THO.

GRI BB 080/58/81 363
HEB BB 081/60/82 363
ODX BB 078/56/79 363
LXN BB 082/57/82 263
BEL BB 086/64/84 232

GURNEY

In the hours before

Special weather statement, May 21, 11:33 AM CDT, 1 hour 14 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>

Special weather statement, May 21, 11:33 AM CDT, 1 hour 14 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>

Special weather statement, May 21, 12:25 PM CDT, 22 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>

Special weather statement, May 21, 12:25 PM CDT, 22 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>

Special weather statement, May 21, 12:25 PM CDT, 22 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>

Special weather statement, May 21, 12:25 PM CDT, 22 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 8:06 AM CDT	Severe Thunderstorm Warning	GID	Dawson	64 min
May 21, 8:24 AM CDT	Severe Thunderstorm Warning	GID	Gosper	46 min
May 21, 8:30 AM CDT	Severe Thunderstorm Warning	GID	Dawson	65 min
May 21, 8:40 AM CDT	Tornado Warning	GID	Dawson, Gosper	60 min
May 21, 9:20 AM CDT	Tornado Warning	GID	Gosper	60 min
May 21, 9:27 AM CDT	Tornado Warning	GID	Buffalo	63 min
May 21, 9:42 AM CDT	Tornado Warning	GID	Dawson	33 min
May 21, 10:02 AM CDT	Severe Thunderstorm Warning	GID	Phelps	48 min
May 21, 10:32 AM CDT	Tornado Warning	GID	Buffalo	63 min
May 21, 11:03 AM CDT	Severe Thunderstorm Warning	GID	Kearney	32 min
May 21, 11:32 AM CDT	Severe Thunderstorm Warning	GID	Adams, Hall	58 min
May 21, 11:38 AM CDT	Severe Thunderstorm Warning	GID	Kearney	32 min
May 21, 12:30 PM CDT	Severe Thunderstorm Warning	GID	Hamilton	65 min
May 21, 1:24 PM CDT	Severe Thunderstorm Warning	GID	Fillmore, York	61 min
May 21, 6:57 PM CDT	Severe Thunderstorm Warning	GID	Gosper, Phelps	33 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1998 Every severe thunderstorm warning in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.