Alert archive / Arizona / Hard Freeze Warnings in 2011

Hard Freeze Warning 8, NWS Tucson, AZ

December 4, 2011Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this hard freeze warning at Dec 4, 2011, 2:16 PM MST for Pima County, Pinal County, Arizona. It took effect at Dec 6, 2011, 2:00 AM MST. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 4, 2011, 2:16 PM MST (21:16 UTC)
In effect from
Dec 6, 2011, 2:00 AM MST
Expired
Dec 6, 2011, 8:00 AM MST
In force
6 hr
Issued by
NWS Tucson, AZ

Counties Pima County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 88 km from the middle of the area, began a volume at 21:18 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.

What forecasters said that day

The local office's own words before this hard freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tucson, AZ wrote its last area forecast discussion before this hard freeze warning went out at Dec 4, 9:25 AM MST, 4 hours 51 minutes earlier.

Area forecast discussion, Dec 4, 9:25 AM MST, 4 hours 51 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, Dec 3, 2:40 PM MST, 23 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
240 PM MST SAT DEC 3 2011

AZZ510-511-514-042145-
WHITE MOUNTAINS OF GRAHAM AND GREENLEE COUNTIES-
GALIURO AND PINALENO MOUNTAINS-CATALINA AND RINCON MOUNTAINS-
240 PM MST SAT DEC 3 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
SUNDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
ARIZONA.

.DAY ONE...TONIGHT

A WINTER STORM WILL RESULT IN WIDESPREAD MOUNTAIN SNOW WITH 6 TO 10
INCHES OF SNOW EXPECTED INTO SUNDAY. SEE WINTER WEATHER ADVISORY
PRODUCT FOR LATEST INFORMATION.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SNOW WILL TAPER OFF SUNDAY WITH COLD WEATHER WILL CONTINUE FOR MUCH
OF THIS WEEK. THERE WILL BE ANOTHER CHANCE OF SNOW ACROSS THE WHITE
MOUNTAINS MONDAY.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

AZZ506-509-042145-
SOUTHEAST PINAL COUNTY-UPPER GILA RIVER VALLEY-
240 PM MST SAT DEC 3 2011

...WINTER WEATHER ADVISORY IS IN EFFECT FROM 6 PM MST THIS EVENING
UNTIL 11 AM MST SUNDAY ABOVE 4000 FEET...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
ARIZONA.

.DAY ONE...TONIGHT
A WINTER STORM WILL RESULT IN RAIN ACROSS THE LOWER ELEVATIONS AND
SNOW ABOVE 4000 FEET WITH 2 TO 4 INCHES EXPECTED INTO SUNDAY
MORNING. SEE LATEST WINTER WEATHER ADVISORY PRODUCT FOR LATEST
INFORMATION.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
PRECIPITATION WILL TAPER OFF SUNDAY WITH CONTINUED COLD WEATHER
CONTINUING THROUGH MUCH OF THE UPCOMING WEEK.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

AZZ502-504-505-042145-
TOHONO O'ODHAM NATION-TUCSON METRO AREA-
SOUTH CENTRAL PINAL COUNTY-
240 PM MST SAT DEC 3 2011

...FREEZE WATCH IS IN EFFECT FROM LATE SUNDAY NIGHT INTO MONDAY
MORNING...
...FREEZE WATCH IS IN EFFECT FROM LATE MONDAY NIGHT INTO TUESDAY
MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
ARIZONA.

.DAY ONE...TONIGHT
WIDESPREAD SHOWERS WILL MOVE ACROSS THE AREA TONIGHT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
SHOWERS WILL TAPER OFF ACROSS THE AREA SUNDAY WITH MUCH COLDER
TEMPERATURES SETTLING IN BY MONDAY MORNING AND ESPECIALLY TUESDAY
MORNING. TEMPERATURES WILL ARE EXPECTED TO BE AT OR BELOW FREEZING
BOTH MORNINGS...THUS A FREEZE WATCH HAS BEEN ISSUED.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

WEATHER.GOV/TUCSON

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 4, 2:33 AM MSTFreeze WarningTWCPima, Pinal30 hr
Dec 4, 4:42 AM MSTDense Fog AdvisoryTWCCochise, Graham, Greenlee, Pima, Pinal, Santa Cruz4 hr

Nearby

Hard Freeze Warnings in Arizona, 2011Every hard freeze warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.