Alert archive / Florida / Special Weather Statements in 2018

Special Weather Statement, NWS Melbourne, FL

July 27, 2018Indian River County, Florida

NWS Melbourne, FL issued this special weather statement at Jul 27, 2018, 2:09 PM EDT for Indian River County, Florida. It was in force for 36 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
Jul 27, 2018, 2:09 PM EDT (18:09 UTC)
Expired
Jul 27, 2018, 2:45 PM EDT
In force
36 min
Issued by
NWS Melbourne, FL

County Indian River County, FL

The radar

The Melbourne radar (KMLB), 59 km from the middle of the area, began a volume at 18:12 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 6.2 hours before the alert went out and 95 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, Cape Canaveral, FL at 12:00Z on 2018-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1762 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, Cape Canaveral, FL at 12:00Z on 2018-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.1939Sfc1 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
1762 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Melbourne, FL wrote its last area forecast discussion before this special weather statement went out at Jul 27, 10:15 AM EDT, 3 hours 54 minutes earlier.

Area forecast discussion, Jul 27, 10:15 AM EDT, 3 hours 54 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, Jul 27, 9:20 AM EDT, 4 hours 49 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Melbourne FL
920 AM EDT Fri Jul 27 2018

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-280000-
Flagler Beach to Volusia-Brevard County Line 0-20 nm-Volusia-
Brevard County Line to Sebastian Inlet 0-20 nm-
Sebastian Inlet to Jupiter Inlet 0-20 nm-Flagler Beach to Volusia-
Brevard County Line 20-60 nm-Volusia-
Brevard County Line to Sebastian Inlet 20-60 nm-
Sebastian Inlet to Jupiter Inlet 20-60 nm-Inland Volusia County-
Northern Lake County-Orange-Seminole-Southern Brevard County-
Osceola-Indian River-Okeechobee-St. Lucie-Martin-
Coastal Volusia County-Southern Lake County-
Northern Brevard County-
920 AM EDT Fri Jul 27 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
Ample moisture and south to southwest flow will generate another
round of scattered to numerous lightning storms today. Convection
will develop by early afternoon along the east coast sea breeze
near the Treasure coast before gradually transitioning inland into
the late afternoon and early evening. Individual storms are
expected to move toward the north to northeast at around 10 mph,
though weak steering flow and numerous boundary interactions will
lead to chaotic storm motion at times. The primary hazards will be
torrential downpours, frequent lightning strikes, and gusty winds
up to 45 mph in stronger storms.

If outdoors and thunder is heard, seek shelter in an enclosed
building or automobile. Picnic shelters, tents and golf carts
offer no protection from lightning. Stay away from water as it is
an excellent conductor of electricity.

.FLOOD IMPACT...
Slower moving showers and storms may produce rainfall amounts up
to 2 to 3 inches in a short period of time. The heavy rain may
produce temporary urban and poor drainage flooding.

.RIP CURRENT IMPACT...
A moderate risk of rip currents will exist at the beaches of east
central Florida. Always swim within sight of a lifeguard.

.MARINE THUNDERSTORM GUST IMPACT...
Storms will develop over the mainland this afternoon and may
affect the intracoastal and nearshore Atlantic waters as well as
inland lakes. A few storms will be capable of producing frequent
lightning strikes and wind gusts in excess of 30 knots.

.RIVER FLOOD IMPACT...
The Saint Johns River above Lake Harney near Geneva and at Astor
remain in Minor Flood Stage, and River Flood Warnings are in
effect for these areas. Sanford and Deland remain near or above
Action Stage. The river is forecast to remain steady or slightly
increase through the week.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
Scattered to numerous afternoon and evening showers and thunderstorms
are expected into early next week. The main storm threats will
continue to be frequent lightning strikes, gusty winds and
torrential downpours producing urban, river, and poor drainage
flooding.

A moderate risk of rip currents is expected through the weekend.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected today. Rainfall spotters are
requested to report amounts greater than 3 inches to the Melbourne
National Weather Service.

Volkmer/Ulrich

In the hours before

Special weather statement, Jul 27, 2:09 PM EDT, 0 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 Melbourne, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 27, 2:45 PM EDTSpecial Weather StatementMLBSaint Lucie30 min
Jul 27, 2:47 PM EDTSpecial Marine WarningMLB88 min
Jul 27, 2:55 PM EDTSpecial Marine WarningMLB2 hr
Jul 27, 3:27 PM EDTSpecial Weather StatementMLBBrevard33 min
Jul 27, 3:48 PM EDTAreal Flood AdvisoryMLBBrevard87 min
Jul 27, 4:03 PM EDTSpecial Weather StatementMLBIndian River27 min
Jul 27, 4:44 PM EDTSpecial Weather StatementMLBSeminole31 min
Jul 27, 4:52 PM EDTSpecial Weather StatementMLBVolusia38 min
Jul 27, 5:22 PM EDTSpecial Weather StatementMLBSeminole23 min
Jul 27, 5:25 PM EDTSpecial Marine WarningMLB95 min
Jul 27, 5:29 PM EDTSpecial Weather StatementMLBVolusia31 min
Jul 27, 5:41 PM EDTAreal Flood AdvisoryMLBLake, Volusia2 hr
Jul 27, 7:03 PM EDTSpecial Weather StatementMLBSeminole27 min
Jul 27, 7:27 PM EDTSpecial Weather StatementMLBOrange33 min

Nearby

Special Weather Statements in Florida, 2018Every special weather statement 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.