ZCZC MIATCDEP2 ALL TTAA00 KNHC DDHHMM TROPICAL DEPRESSION TWENTY-TWO-E DISCUSSION NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL EP222015 900 PM CST MON NOV 23 2015 The depression is gradually becoming better organized. The cloud pattern consists of a small central dense overcast with fragmented bands to the north and northeast of the center. The latest Dvorak classifications were T2.5/35 kt from TAFB, T2.0/30 kt from SAB, and ADT values of T2.3/33 kt from CIMSS at the University of Wisconsin. Based on these data, the initial intensity is 30 kt. The cyclone lies on the south side of a mid-level high pressure system, and is moving quickly westward at about 17 kt, likely influenced to some degree by the Tehuantepec gap wind event. The ridge is expected to shift eastward during the next couple of days, which should cause the system to slow down and turn west-northwestward on Tuesday and northwestward on Wednesday. After that time, a northward and northeastward motion toward the coast of Mexico is expected when the system moves in the flow between the ridge and a large trough. The track models remain in fair agreement on this scenario, and the NHC official track forecast is largely an update of the previous one. Strengthening seems likely during the next few days while the cyclone remains over very warm sea surface temperatures of 29-30 degrees C, and in an environment of less than 10 kt of shear. The intensity models respond to these conducive conditions in showing steady intensification, and the NHC intensity forecast lies near the upper end of the guidance envelope given the expected favorable conditions. After about 3 days, southwesterly shear is forecast to significantly increase and mid-level humidity values are expected to fall. These hostile conditions should cause a quick rate of weakening when the cyclone approaches Mexico, although there continues to be a significant uncertainty in the intensity forecast around 5 days. FORECAST POSITIONS AND MAX WINDS INIT 24/0300Z 10.9N 104.6W 30 KT 35 MPH 12H 24/1200Z 11.4N 106.5W 40 KT 45 MPH 24H 25/0000Z 12.0N 108.7W 50 KT 60 MPH 36H 25/1200Z 12.8N 110.3W 60 KT 70 MPH 48H 26/0000Z 13.8N 111.3W 75 KT 85 MPH 72H 27/0000Z 17.1N 111.6W 80 KT 90 MPH 96H 28/0000Z 21.3N 110.3W 60 KT 70 MPH 120H 29/0000Z 25.0N 107.5W 30 KT 35 MPH...INLAND $$ Forecaster Cangialosi NNNN
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