On Jun 28, 9:07*pm, "billn" > wrote:
> "Nancy2" wrote:
>
> On Jun 28, 10:09 am, Janet Bostwick > wrote:
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> > On Thu, 28 Jun 2012 05:25:12 -0400, "Somebody"
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> > > wrote:
> > >Red Flag Warning
> > >Heat Advisory
> > >Air Quality Alert
> > >Hazardous Weather Outlook
>
> > >Next 5 days all have 3 digits for the temperature prediction. This is not
> > >good or normal.
>
> > >I've never seen a "red flag warning" I thought that was a soccer thing..
>
> > where do you live that hot, dry conditions don't favor wildfire
> > danger?
> > Janet US
>
> Red flag here in Iowa doesn't ever mean wildfires, at least that I
> know of. *It's high temps plus humidity.
>
> Here's the official definition of a Red Flag Warning from the National
> Weather Service website:
>
> -----------------------
>
> Red Flag Warning
>
> A term used by fire-weather forecasters to call attention to limited weather
> conditions of particular importance that may result in extreme burning
> conditions. It is issued when it is an on-going event or the fire weather
> forecaster has a high degree of confidence that Red Flag criteria will occur
> within 24 hours of issuance. Red Flag criteria occurs whenever a
> geographical area has been in a dry spell for a week or two, or for a
> shorter period , if before spring green-up or after fall color, and the
> National Fire Danger Rating System (NFDRS) is high to extreme and the
> following forecast weather parameters are forecasted to be met:
>
> 1) a sustained wind average 15 mph or greater
>
> 2) relative humidity less than or equal to 25 percent and
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> 3) a temperature of greater than 75 degrees F.
>
> In some states, dry lightning and unstable air are criteria. A Fire Weather
> Watch may be issued prior to the Red Flag Warning.
>
> -----------------------
> --
> bill n

Our weather guys use it for high heat and humidity. I don't know that
we ever have humidity below 25% in the summer.

N.