Severe Thunderstorm Warning 131, NWS Quad Cities, IA

Issued

Aug 30, 1997, 7:13 PM CDT (00:13 UTC)

Expired

Aug 30, 1997, 8:15 PM CDT

In force

62 min

Issued by

NWS Quad Cities, IA

Area

Whole counties

County Jones County, IA

The Quad Cities radar (KDVN), 73 km from the middle of the area, began a volume at 00:13 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.

000 
TTAA00 KMLI 310014 RRA
SVRMLI
IAC105-310115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
713 PM CDT SAT AUG 30 1997

* SEVERE THUNDERSTORM WARNING FOR
  JONES COUNTY IN EAST CENTRAL IOWA

* UNTIL 815 PM CDT
 
* SOME LOCATIONS AFFECTED
  WYOMING                            AROUND 720 PM CDT
  HALE                               AROUND 735 PM CDT
  OLIN                               AROUND 740 PM CDT
  OXFORD JCT                         AROUND 750 PM CDT
  OXFORD MILLS                       AROUND 755 PM CDT

* AT 712 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY QUAD
  CITIES IA DOPPLER RADAR 32 MILES EAST OF CEDAR RAPIDS OR 4 MILES
  NORTHWEST OF WYOMING MOVING SOUTH AT 10 MPH.
 
WHEN SEVERE THUNDERSTORMS ARE OCCURRING...MOVE INSIDE A STRONG
BUILDING. DO NOT STAND BY WINDOWS OR USE TELEPHONES OR
ELECTRICAL APPLIANCES UNLESS AN EMERGENCY. MOTORISTS SHOULD NOT
DRIVE INTO LOW WATER CROSSINGS.&

BERG/CORONA

NWS Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 30, 2:09 PM CDT, 5 hours 4 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
209 PM CDT SAT AUG 30 1997

18Z SURFACE ANALYSIS PLACES THE WARM FRONT ROUGHLY ALONG THE
MISSISSIPPI IN FAR EASTERN IOWA WITH A VERY WEAK LOW NEAR KDSM OR
JUST EAST OF THERE.  A PSEUDO FRONT OR TROF EXTENDED FROM THIS LOW
TO ANOTHER IN SOUTHEAST KANSAS.  ISODROSOTHERM ANALYSIS HAS 70
DEWPOINTS JUST SHORT OF THE MISSISSIPPI WITH MID TO UPPER 60S EAST
OF THE MISSISSIPPI.  PROFILER DATA HAS A SHORTWAVE ROTATING THROUGH
NORTHEAST IOWA AND SOUTHERN WISCONSIN WHILE SATELLITE/88D DATA HAD
THE BULK OF THE LOW CLOUDS/PRECIPITATION ALONG AND EAST OF THE
MISSISSIPPI.

QUESTIONS TONIGHT ARE EVENING RAIN CHANCES...CLEARING...FOG...AND
TEMPERATURES.

12Z MODELS APPEAR TO HAVE INITIALIZED OK AND WERE DOING A FAIR JOB
OF VERIFYING AT 18Z WITH THE AVN LOOKING THE BEST IN SUGGESTING A
LOW ACROSS CENTRAL IOWA AT 18Z.  AVN SPEED OF FEATURES LOOKS TO BE
THE BEST OF THE MODELS BUT THE NGM DETAILS LOOK BETTER THAN THE AVN.
NONETHELESS AVN/NGM MOVE PSEUDO FRONT THROUGH THIS EVENING WHICH
MAY PROVIDE ENOUGH FOCUS FOR A FEW SHRA/TSRA TO DEVELOP.  MAIN COLD
FRONT IS PROGGED BY MODELS TO MOVE THROUGH AFTER MIDNIGHT AND CLEAR
THE FORECAST AREA SUNDAY MORNING.  THUS SOME LOW POPS FOR EVENING
ACROSS IOWA AND HIGHER POPS FOR ILLINOIS ZONES FOLLOWED BY CLEARING
SKIES.  LIGHT WINDS AND HIGH RH FIELDS SHOULD ALLOW FOG TO DEVELOP
TONIGHT AS WELL SO MENTIONING AREAS OF FOG AFTER MIDNIGHT LOOKS
GOOD.

TRAJECTORY METHOD YIELDS 65 TO 70 WHICH IS IN GENERAL AGREEMENT
WITH FWC/FAN NUMBERS.  BASED ON PAST FEW NIGHTS...MID TO UPPER 60S
WOULD PROBABLY BE BETTER.

CID 064/20  DBQ 063/40  MLI 065/40  BRL 068/50

PIERCE

Severe Thunderstorm Warnings in Iowa, 1997Every severe thunderstorm warning in 1997

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.