Alert archive / Arizona / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 29, NWS Phoenix, AZ

August 11, 1995Maricopa County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 11, 1995, 12:30 AM MST for Maricopa County, Arizona. It was in force for 53 min.

The area

The counties it named.

The facts

Issued: Aug 11, 1995, 12:30 AM MST (07:30 UTC)
Expired: Aug 11, 1995, 1:23 AM MST
In force: 53 min
Issued by: NWS Phoenix, AZ
Area: Whole counties

County Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 77 km from the middle of the area, began a volume at 07:30 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

Tuscon, AZ (KTUS), launched 00:00Z, 7.5 hours before the alert went out and 198 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: 922 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 2958 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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.

In the hours before

Special weather statement, Aug 10, 7:51 PM MST, 4 hours 39 minutes before

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Local storm report, Aug 10, 8:00 PM MST, 4 hours 30 minutes before

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Special weather statement, Aug 10, 8:40 PM MST, 3 hours 50 minutes before

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Special weather statement, Aug 10, 8:41 PM MST, 3 hours 49 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
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Special weather statement, Aug 10, 11:35 PM MST, 55 minutes before

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      <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.
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Special weather statement, Aug 10, 11:38 PM MST, 52 minutes before

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      <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.
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      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 6:14 PM MST	Flash Flood Warning	PSR	Pinal	71 min
Aug 10, 6:14 PM MST	Severe Thunderstorm Warning	PSR	Pinal	71 min
Aug 11, 2:10 PM MST	Flash Flood Warning	PSR	Graham	85 min
Aug 11, 3:03 PM MST	Severe Thunderstorm Warning	PSR	Pinal	42 min
Aug 11, 3:44 PM MST	Severe Thunderstorm Warning	PSR	Pinal	56 min
Aug 11, 3:46 PM MST	Flash Flood Warning	PSR	Graham	59 min
Aug 11, 4:26 PM MST	Severe Thunderstorm Warning	PSR	Gila	44 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1995 Every severe thunderstorm warning in 1995

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.