Alert archive / Oregon / Flash Flood Warnings in 2001

Flash Flood Warning 1, NWS Medford, OR

July 11, 2001Douglas County, Oregon

NWS Medford, OR issued this flash flood warning at Jul 11, 2001, 3:19 PM PDT for Douglas County, Oregon. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jul 11, 2001, 3:19 PM PDT (22:19 UTC)
Expired: Jul 11, 2001, 6:15 PM PDT
In force: 3 hr
Issued by: NWS Medford, OR
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Douglas County, OR

The radar

The Medford radar (KMAX), 138 km from the middle of the area, began a volume at 22:18 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

Medford/Jackson, OR (KMFR), launched 12:00Z, 10.3 hours before the alert went out and 107 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: 7 J/kg
Mixed-layer CIN: -453 J/kg
Mixed-layer LCL: 1260 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS56 KMFR 112221
FFWMFR
ORC019-120115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEDFORD OR
319 PM PDT WED JUL 11 2001

THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL DOUGLAS COUNTY IN SOUTHWEST OREGON

* UNTIL 615 PM PDT

* AT 306 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN BETWEEN TOKETEE FALLS AND STEAMBOAT ALONG HIGHWAY  
  138

* OF SPECIAL CONCERN WOULD BE THE BOULDER CREEK AREA

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED
QUICKLY. MOVE TO HIGHER GROUND.

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU
ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.

LAT...LON 4316 12253 4317 12281 4360 12295 4351 12231
$$

GET|TMAN

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Medford, OR wrote its last area forecast discussion before this flash flood warning went out at Jul 11, 2:30 PM PDT, 49 minutes earlier.

Area forecast discussion, Jul 11, 2:30 PM PDT, 49 minutes before

SOUTHWEST OREGON/NORTHERN CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEDFORD OR
230 PM PDT WED JUL 11 2001

SCATTERED THUNDERSTORMS WILL CONTINUE TONIGHT. UPPER LEVEL LOW ALONG
THE NORTHERN CALIFORNIA COAST AND ITS ASSOCIATED SHORTWAVE WILL LIFT
NORTHEAST TONIGHT. THIS WILL PROVIDE ADDITIONAL LIFT HELPFUL TO KEEP
CONVECTION GOING WELL AFTER SUNSET. ACTIVITY IS MAINLY ACROSS
SISKIYOU...EASTERN DOUGLAS AND AREA EAST OF THE CASCADES. EAST OF THE
CASCADES WILL HAVE THE MOST WIDESPREAD ACTIVITY BEYOND SUNSET. ON
THURSDAY THE AIR MASS WILL NOT BE QUITE AS MOIST. FORECAST OF THETA-E
RIDGE AND LIFTED INDEX SUPPORTS FORECAST OF MAINLY EAST SIDE
THUNDERSTORMS ON THURSDAY AS FLOW ALOFT ON THE WEST SIDE SHIFTS MORE
TOWARD THE SOUTHWEST. UPPER LEVEL TROUGH WILL REMAIN OVER THE EASTERN
PACIFIC THROUGH SATURDAY. EXPECT GRADUAL COOLING FRIDAY THROUGH
SATURDAY WITH UNSTABLE AFTERNOON AIRMASS SHIFTING A LITTLE FURTHER
EAST EACH DAY. BY SUNDAY EXPECT FLOW ALOFT TO BECOME WESTERLY AS A
STRONGER REINFORCING TROUGH DROPS SOUTHEAST ACROSS BRITISH COLUMBIA.
THIS WILL LEAD TO COOLING AND STABILIZATION OF THE AIR MASS...ALSO
COOL AND MAINLY CLOUDY CONDITIONS AT THE COAST. MRF LOOKS OVERDONE IN
THE SOUTHWARD PROGRESS OF THIS TROUGH. LATEST AVN RUN ALREADY HAS
BACKED OFF ON LOWERING 500 MB HEIGHTS. STILL EXPECT AT LEAST PARTIAL
CLOUD COVER INLAND. WILL RAISE TEMPS SLIGHTLY FOR EARLY NEXT WEEK AND
TAKE OUT MENTIONS OF SHOWERS.  WEYGAND

.MFR...SMALL CRAFT ADVISORY FLORENCE OR TO POINT ST GEORGE CA.

OTH BB 051/064 050/063 050 162110
4BK BB 051/064 050/065 050 162110
RBG BB 057/082 056/081 055 164220
MFR BB 057/090 055/087 055 165220
LMT BB 048/082 047/081 047 166332
LKV BB 049/083 049/082 049 166332
MHS BB 051/081 050/083 050 165220

In the hours before

Local storm report, Jul 11, 3:12 PM PDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OREGON
212 PM PST WED JUL 11 2001

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

0209 PM    KENO                      OR   .75 INCH HAIL
07/11/01   KLAMATH                        SPOTTER KL04 REPORTS DIME
                                          SIZED HAIL AND HEAVY RAIN.

The office that day

Everything else NWS Medford, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 10, 6:07 PM PDT	Severe Thunderstorm Warning	MFR	Jackson	53 min
Jul 11, 3:07 PM PDT	Severe Thunderstorm Warning	MFR	Klamath	53 min

Nearby

Flash Flood Warnings in Oregon, 2001 Every flash flood warning in 2001

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.