Severe Thunderstorm Warning 38, NWS Denver/Boulder, CO

COZ011-232030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE  DENVER CO
1225 PM MDT MON JUL 23 1990

...THUNDERSTORMS DEVELOPING OVER THE NORTHWEST COLORADO AND THE
MOUNTAINS...

AT 1220PM THUNDERSTORMS HAD DEVELOPED OVER THE NORTHWEST PLATEAU OF
COLORADO AND WERE BEGINNING TO DEVELOP OVER THE MOUNTAINS.  THESE
THUNDERSTORMS ARE ASSOCIATED WITH A DISTURBANCE IN THE UPPER LEVEL OF
THE ATMOSPHERE.

THE THUNDERSTORMS WILL CONTINUE TO SPREAD EASTWARD AND DEVELOP ALONG THE
FRONT RANGE OF COLROADO AFTER 2PM THIS AFTERNOON.  MOST AREAS IN THE
EAST ARE EXPECTED TO GET A SHOWER OR THUNDERSTORM LATER THIS AFTERNOON
AND EVENING.

A FEW OF THESE THUNDERSTORMS IN THE EAST COULD REACH SEVERE LEVELS...
PRODUCING LARGE HAIL AND STRONG DAMAGING WINDS.  THE MAIN THREAT OF
SEVERE THUNDERSTORMS IS OVER THE EASTERN PLAINS EAST OF THE DENVER METRO
DISTRICT WHERE THE AIR IS VERY MOIST.

ALONG THE FRONT RANGE...THE THREAT OF SEVERE THUNDERSTORMS IS LESS
BUT THUNDERSTORMS COULD STILL PRODUCE HAIL AND STRONG GUSTY WINDS ALONG
WITH FREQUENT LIGHTNING.  MOST RAINFALL ALONG THE FRONT RANGE SHOULD BE
LESS THAN 1/2 INCH BUT A FEW OF THE STRONGER THUNDERSTORMS COULD PRODUCE
UP TO AN INCH OF RAIN.

HOLZINGER

COZ011>017-232130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE  DENVER CO
220 PM MDT MON JUL 23 1990

...TORNADO WATCH FOR EASTERN COLORADO...

THUNDERSTORMS HAVE DEVELOPED OVER THE MOUNTAINS OF COLORADO AS WELL AS
THE PALMER DIVIDE BETWEEN COLORADO SPRINGS AND DENVER AS OF 2 PM MDT
MONDAY AFTERNOON.  THE STORMS ARE MOVING TO THE SOUTHEAST AT AROUND 20
MPH.

THE AIR ON THE EASTERN COLORADO PLAINS IS SUCH THAT AS THESE STORMS MOVE
INTO THESE AREAS THIS AFTERNOON AND EVENING THEY ARE LIKELY TO RAPIDLY
BECOME SEVERE...PRODUCING LARGE HAIL...STRONG DAMAGING WINDS...DEADLY
LIGHTNING...HEAVY RAIN AND PERHAPS EVEN TORNADOES.

THUS...A TORNADO WATCH IS IN EFFECT FOR ALL OF EASTERN COLORADO FROM THE
FOOTHILLS TO THE KANSAS AND NEBRASKA BORDERS.  THE WATCH IS IN EFFECT
FOR THIS AFTERNOON AND EVENING UNTIL 9 PM.

PERSONS THROUGHOUT EASTERN COLORADO SHOULD BE ON THE LOOKOUT FOR BAD
WEATHER THIS AFTERNOON AND EVENING AND MOVE A PLACE OF SAFETY IF
THREATENING WEATHER APPROACHES.

ET

COZ011>017-232230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE  DENVER CO
345 PM MDT MON JUL 23 1990

...A LINE OF THUNDERSTORMS ROARS EAST ALONG THE FRONT RANGE...

AT 345 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF THUNDERSTORMS ALONG THE FRONT RANGE.  THE LINE EXTENDED FROM SOUTH-
WESTERN WELD COUNTY...ABOUT 25 MILES NORTH OF DENVER...THROUGH AURORA
TO SOUTHERN DOUGLAS COUNTY...35 MILES SOUTH OF DENVER.  THE LINE WAS
MOVING TOWARD THE EAST SOUTHEAST AT 25 MPH.  THE STRONGEST STORM WAS
AT THE NORTH END OF THE LINE.

THESE THUNDERSTORMS HAVE PRODUCED BRIEF HEAVY RAIN WITH MANY SPOTS
RECEIVING ABOUT A QUARTER INCH OF MOISTURE IN JUST 10 OR 15 MINUTES.
DUE TO THE RAPID MOVEMENT OF THE STORMS ONLY MINOR STREET FLOODING
IS LIKELY TO OCCUR.

THE STORMS HAVE ALSO PRODUCED SMALL HAIL...AND WINDS GUSTED TO 52 MPH
AT STAPLETON AIRPORT.

PERSONS IN THE EASTERN DENVER METRO AREA...AND IN SOUTHERN WELD AND
EASTERN DOUGLAS COUNTIES SHOULD BE PREPARED FOR SIMILAR WEATHER BETWEEN
NOW AND 430 PM MDT.  TAKE COVER IF A THUNDERSTORM APPROACHES YOUR AREA.

A TORNADO WATCH IS IN EFFECT FOR ALL OF EASTERN COLORADO UNTIL 9 PM MDT.

MARKKANEN