Severe Thunderstorm Warning 119, NWS Des Moines, IA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
330 PM CDT MON AUG 9 1999

WX QUITE FOR TNGT WITH HI MOVG ACRS IA OVR NGT.  MAIN FEAT COMES
LATE WED INTO THU MRNG.  MDLS CONSISTENT WITH MVMT OF UPR LO AND STG
VMAX FOR THIS TIME OF YR.  MEAN RDG PSN TO THE W OF IA AND MVMTS OF
UPR LO AND SFC CONSISTENT WITH THIS PSN.  QUICK REBOUND OF MSTR
INDCTD BY ALL MDLS WITH PWATS UP TO 50 MM B WED EVE.  THETA-E AVCTN
STG OVR IA LATE IN DAY WED THRU 08Z THU AND VRY GUF LLJ FOR MID
AUG.  TSTMS SHUD BE WDSPRD AND WL GO CAT POPS N, LKLY CNTRL AND CHC
S WED NGT AFT INTRO CHC OVR W THIRD WED.  MNTND POPS MAINLY MRNG THU
AND A LOT CUD GO WRONG WITH THIS FCST BFR ALL IS SAID AND DONE.
INDICTNS OF 1ST DRY SLOT IN AVN FOR THU AFTN AND EVE BFR COLD AIR
WRAPS ARND FM THE NW INTO ERY FRI.  WL CARRY SOME POPS INTO FRI ERY,
BUT THEN DRY UNTIL LATE SUN WITH NXT SYS.  SHUD WRM UP OVR WKND WITH
PHASE 2 OF SUMMER GETTING INTO SWING.
DSM 02722   ALO 01865

.DSM...NONE

MS AUG 99

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086-
092>097-101100-

CENTRAL IOWA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
800 PM CDT MON AUG 9 1999

HAZARD--WIDELY SCATTERED THUNDERSTORMS.  SOME MAY BE SEVERE WITH
DAMAGING WINDS AND LARGE HAIL.  BRIEF HEAVY RAINS AND ISOLATED
TORNADOES ARE ALSO POSSIBLE.

AREA OF CONCERN AND TIMING DETAILS--ALL OF CENTRAL IOWA BUT
PRIMARILY NORTH OF HIGHWAY 20.  STORMS ACROSS SOUTHERN MINNESOTA
WILL MOVE SOUTHEAST INTO NORTH CENTRAL AND NORTHEAST PORTIONS OF THE
STATE OVERNIGHT.  THE PRIMARY THREAT OF SEVERE WEATHER SHOULD END BY
MIDNIGHT.

METEOROLOGICAL COMMENTS--A FRONTAL BOUNDARY BRINGING IN DRIER AIR WAS
MOVING INTO NORTHWEST IOWA THIS EVENING.  THE AIRMASS AHEAD
OF THE FRONT WAS QUITE UNSTABLE AND WIND SHEAR PROFILES WERE
SUFFICIENT TO PRODUCE ORGANIZED SEVERE THUNDERSTORMS...ESPECIALLY
OVER NORTHERN IOWA.  STORMS WHICH HAVE ALREADY FORMED IN SOUTHERN
MINNESOTA WILL MOVE INTO NORTHERN IOWA THIS EVENING WITH ALL FORMS
OF SEVERE WEATHER POSSIBLE INCLUDING LARGE HAIL...DAMAGING WINDS AND
TO A LESSER EXTENT TORNADOES.

PRECAUTIONS--SPOTTER DEPLOYMENT MAY BE NEEDED THIS EVENING.   THE
WEATHER SITUATION COULD CHANGE RAPIDLY SO PEOPLE WITH OUTDOOR
CONCERNS SHOULD MONITOR LATER NATIONAL WEATHER SERVICE FORECASTS AND
STATEMENTS FOR UPDATED INFORMATION...AND BE READY TO MOVE TO SAFE
SHELTER QUICKLY.

COGIL

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086-
092>097-101100-

CENTRAL IOWA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
800 PM CDT MON AUG 9 1999

HAZARD--WIDELY SCATTERED THUNDERSTORMS.  SOME MAY BE SEVERE WITH
DAMAGING WINDS AND LARGE HAIL.  BRIEF HEAVY RAINS AND ISOLATED
TORNADOES ARE ALSO POSSIBLE.

AREA OF CONCERN AND TIMING DETAILS--ALL OF CENTRAL IOWA BUT
PRIMARILY NORTH OF HIGHWAY 20.  STORMS ACROSS SOUTHERN MINNESOTA
WILL MOVE SOUTHEAST INTO NORTH CENTRAL AND NORTHEAST PORTIONS OF THE
STATE OVERNIGHT.  THE PRIMARY THREAT OF SEVERE WEATHER SHOULD END BY
MIDNIGHT.

METEOROLOGICAL COMMENTS--A FRONTAL BOUNDARY BRINGING IN DRIER AIR WAS
MOVING INTO NORTHWEST IOWA THIS EVENING.  THE AIRMASS AHEAD
OF THE FRONT WAS QUITE UNSTABLE AND WIND SHEAR PROFILES WERE
SUFFICIENT TO PRODUCE ORGANIZED SEVERE THUNDERSTORMS...ESPECIALLY
OVER NORTHERN IOWA.  STORMS WHICH HAVE ALREADY FORMED IN SOUTHERN
MINNESOTA WILL MOVE INTO NORTHERN IOWA THIS EVENING WITH ALL FORMS
OF SEVERE WEATHER POSSIBLE INCLUDING LARGE HAIL...DAMAGING WINDS AND
TO A LESSER EXTENT TORNADOES.

PRECAUTIONS--SPOTTER DEPLOYMENT MAY BE NEEDED THIS EVENING.   THE
WEATHER SITUATION COULD CHANGE RAPIDLY SO PEOPLE WITH OUTDOOR
CONCERNS SHOULD MONITOR LATER NATIONAL WEATHER SERVICE FORECASTS AND
STATEMENTS FOR UPDATED INFORMATION...AND BE READY TO MOVE TO SAFE
SHELTER QUICKLY.

COGIL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
906 PM CDT MON AUG 09 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0902 PM    SCARVILLE                 IA    TORNADO
08/09/99   WINNEBAGO                       TORNADO REPORTED NEAR
                                           SCARVILLE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
906 PM CDT MON AUG 09 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0902 PM    SCARVILLE                 IA    TORNADO
08/09/99   WINNEBAGO                       TORNADO REPORTED NEAR
                                           SCARVILLE

<!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>

<!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>